275 results on '"Sumer, M."'
Search Results
102. Committee on Additives, Beverages, and Process-Related Analytes
- Author
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Page, B Denis, primary, Hill, Norma R, additional, Thomas, Lillie C, additional, Williams, Sara M, additional, Dugar, Sumer M, additional, Hageman, Lynn R, additional, Marion, Athan R, additional, Canas, Benjamin J, additional, and Reimann, Lars, additional
- Published
- 2002
- Full Text
- View/download PDF
103. Committee on Additives, Beverages, and Food Process Related Analytes
- Author
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Janet Scalese, Maria Ines Cereijo, Janice I Byington, Benjamin J Canas, Chuck Eckermann, Norma R. Hill, Lynn R Hageman, Sumer M Dugar, Lillie C Thomas, Anne P Reid, Steve Kupina, Sneh Bhandari, and Lars M Reimann
- Subjects
Pharmacology ,business.industry ,Food processing ,Environmental Chemistry ,Business ,Food science ,Agronomy and Crop Science ,Food Science ,Analytical Chemistry - Published
- 1996
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104. Committee on Additives, Beverages, and Food Process-Related Analytes
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Page, B Denis, primary, Ertl, Frans S, additional, Thomas, Lillie C, additional, Williams, Sara M, additional, Dugar, Sumer M, additional, Hageman, Lynn R, additional, Marion, Athan R, additional, Canas, Benjamin J, additional, and Hill, Norma R, additional
- Published
- 2001
- Full Text
- View/download PDF
105. Committee on Food Additives, Beverages, and Food Process-Related Analytes: Gelatins: Alcoholic Beverages: Color Additives: Food Additives: Spices and Other Condiments
- Author
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Turner, Wayne A, primary, Dugar, Sumer M, additional, Long, Austin R, additional, Warner, Charles R, additional, and Woodbury, Jim, additional
- Published
- 2000
- Full Text
- View/download PDF
106. Liquid Chromatographic Determination of Vanillin and Related Aromatic Compounds
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Jagerdeo, Eshwar, primary, Passetti, Erin, primary, and Dugar, Sumer M, primary
- Published
- 2000
- Full Text
- View/download PDF
107. Authentication of Straight Whiskey by Determination of the Ratio of Furfural to 5-Hydroxymethyl-2-Furaldehyde
- Author
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Jaganathan, James, primary and Dugar, Sumer M, primary
- Published
- 1999
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108. Determination of Selenium in Wines Using Electrothermal Atomic Absorption Spectrometry with Zeeman Background Correction
- Author
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Jaganathan, James, primary and Dugar, Sumer M., additional
- Published
- 1998
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109. Alcoholic Beverages
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Dugar, Sumer M, primary
- Published
- 1998
- Full Text
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110. Determination of Cadmium in Wines Using Graphite Furnace Atomic Absorption Spectrometry with Zeeman Background Correction
- Author
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Jaganathan, James, primary, Reisig, Alan L., additional, and Dugar, Sumer M., additional
- Published
- 1997
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- View/download PDF
111. Committee on Additives, Beverages, and Food Process Related Analytes:Alcoholic Beverages
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Dugar, Sumer M, primary
- Published
- 1996
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112. Committee on Food Additives, Beverages, and Food Process Related Analytes: Beverage Alcohol
- Author
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Sumer M Dugar
- Subjects
Pharmacology ,food.ingredient ,Chemistry ,business.industry ,Food additive ,Alcohol ,Analytical Chemistry ,chemistry.chemical_compound ,food ,Food processing ,Environmental Chemistry ,Food science ,business ,Agronomy and Crop Science ,Food Science - Published
- 1999
- Full Text
- View/download PDF
113. Determination of Six Common Phthalate Plasticizers in Grain Neutral Spirits and Vodka
- Author
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Leebowitz, Jeffrey N, primary, Sarmiento, Rafael, primary, Dugar, Sumer M, primary, and Ethridge, Michael W, primary
- Published
- 1995
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114. Alcoholic Beverages
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Dugar, Sumer M, primary
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- 1995
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115. Identification of Synthetic Colors in Beverage Alcohol Products by Solid-Phase Extraction and Thin-Layer Chromatography
- Author
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Dugar, Sumer M, primary, Leibowitz, Jeffrey N, primary, and Dyer, Randolph H, primary
- Published
- 1994
- Full Text
- View/download PDF
116. Mothers’ Awareness of their Children’s Dental Status: A Study among a Group of Mothers of Children Diagnosed with Early Childhood Caries.
- Author
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Alaki, Sumer M. and Bagher, Sara M.
- Subjects
- *
DENTAL caries , *DENTAL pathology - Abstract
Mothers' dental awareness has an important impact on their children's oral health and oral health-related behavior. The aim was to evaluate mothers’ awareness of their children’s dental health status and assessing the effect of different socio-demographic variables on their awareness. A total of 124 healthy children diagnosed to have caries were included together with their mothers. The mothers answered a selfadministrated questionnaire regarding different socio-demographic variables, their children dental status and dental history. Most of the mothers included were aware of their children’s dental status; 70 (56.5%) were aware that their children have caries. Significantly, more Saudi mothers were aware that their children have caries compared to non Saudi mothers (p = 0.04). Working mothers were also significantly more aware (p = 0.007). Most of the mothers 90 (65.3%) reported that they did not take their child to a dentist before and in those who did, pain was the main cause of their children first dental visit. Significantly, Saudi working mothers and higher (p = 0.037) percentage of mothers who took their child to a dentist were aware of their child dental status. [ABSTRACT FROM AUTHOR]
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- 2013
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117. Committee on Additives, Beverages, and Food Process Related Analytes:Alcoholic Beverages
- Author
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Sumer M Dugar
- Subjects
Pharmacology ,Environmental Chemistry ,Agronomy and Crop Science ,Food Science ,Analytical Chemistry - Published
- 1996
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118. Can Parents Assess Dental Pain in Children with Cognitive Impairment?
- Author
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Alaki, Sumer M.
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- 2010
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119. The Effect of Test Parameters on Friction and Wear Performance of PTFE and PTFE Composites.
- Author
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UNAL, H., YETGIN, S. H., MIMAROGLU, A., and SUMER, M.
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POLYTEF ,FRICTION ,STAINLESS steel ,POLYMERS ,GLASS fibers ,TRIBOLOGY - Abstract
The friction and wear properties of pure poly-tetra-fluoro-ethylene (PTFE), 35% carbon filled poly-tetra-fluoro-ethylene (PTFE+35%C), and 17% glass fiber-reinforced polytetra-fluoro-ethylene (PTFE+17%GFR) sliding against stainless steel under dry sliding conditions were studied by using a pin-on-disc tribometer. The effect of applied pressure and sliding speed on tribological properties of the polymer-stainless steel combination under dry sliding conditions was investigated. Tests were carried out at sliding speeds of 0.32, 0.64, 0.96, 1.0, 1.5, and 2.0 m/s and under applied pressures of 0.17, 0.34, 0.68, 1.02, 1.76, 3.53, 5.30, and 7.07 MPa. Optical microscopy was utilized to examine the worn surfaces of pure PTFE and it's composite. The results indicated that, for pure PTFE, carbon-filled PTFE and glass fiber-reinforced PTFE composites are used in this investigation; the friction coefficient decreases with the increase in applied load values. The maximum reduction in wear rate was obtained by glass fiber-reinforced PTFE composite. The specific wear rate for pure PTFE, carbon filled PTFE composite, and glass fiber-reinforced PTFE composite were in the order of 10
-13 , 10-14 , and 10-15 5 m²/N, respectively. The wear mechanism include adhesive and abrasive processes. [ABSTRACT FROM AUTHOR]- Published
- 2010
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120. The Association Between Antibiotics Usage in Early Childhood and Early Childhood Caries.
- Author
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Alaki, Sumer M., Burt, Brian A., and Garetz, Susan L.
- Subjects
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CHILDREN'S dental care , *DECIDUOUS teeth , *ANTIBIOTICS , *RACE , *STREPTOCOCCUS mutans ,DENTAL caries risk factors - Abstract
Purpose: The objectives of this study were to learn if the intake of systemic antibiotics during the first year of age (period of primary teeth development) was associated with an increased risk for early childhood caries during the following years; end after the first year of age (following the formation of primary teeth) was associated with a lower risk for early childhood caries during the following years. Conclusions: Children who used systemic antibiotics during the first year of age had a significantly greater risk for early childhood caries (ECC) during follow-up compared to children who did not use antibiotics. After the first year of life, only children who used systemic antibiotics at 13 to 18 months old showed a significant increase in the risk of ECC. A child's racial background was a determining factor in the association between antibiotic intake and ECC. [ABSTRACT FROM AUTHOR]
- Published
- 2009
121. Middle Ear and Respiratory Infections in Early Childhood and Their Association With Early Childhood Caries.
- Author
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Alaki, Sumer M., Burt, Brian A., and Garetz, Susan L.
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DENTAL caries in children , *DENTAL pathology , *JUVENILE diseases , *MIDDLE ear diseases , *RESPIRATORY infections - Abstract
Purpose: The purpose of this study was to examine the risk of early childhood caries (ECC) in children who had middle ear infections (MEl) or respiratory tract infections (RTI) during early childhood. Methods: Medicaid data from Michigan were analyzed for all continuously enrolled children born in 2001 for whom enrollment, medical, and dental claims were filed during 2001-2004. Proportional hazards survival models were used to assess the risk of ECC in children who had MEl or RTI during the first year of life. Results: Included in the study were 29,485 children (51% males and 49% females). By first year of life, 47% and 69% of children had a claim for MEl and RTI, respectively. Children with at least one claim for MEl or RTI were at 29% higher risk for developing ECC compared to those with no claims (P<.001). Hispanic children with 8 or more claims showed 91% greater risk for developing ECC than those with less than 8 claims (P=.01). Conclusions: The occurrence of middle ear infections or respiratory tract infections during the first year of life is associated with a significantly increased risk for developing early childhood caries during subsequent years. Race and ethnicity are possible predictors for ECC in the studied models. [ABSTRACT FROM AUTHOR]
- Published
- 2008
122. Cytokine and chemokine levels in radicular and residual cyst fluids.
- Author
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Muglali M, Komerik N, Bulut E, Yarim GF, Celebi N, and Sumer M
- Abstract
BACKGROUND: Cytokines were thought to play an important role for the expansion of odontogenic cysts. The purpose of this study was to evaluate the cytokine and chemokine levels of radicular and residual cyst fluids. METHODS: Cyst fluids were aspirated from 21 patients (11 radicular and 10 residual cysts) and the levels of interleukin-1 alpha (IL-1alpha), tumor necrosis factor-alpha (TNF-alpha), monocyte chemotactic protein-1 (MCP-1), and regulated upon activation normal T cell expressed and secreted (RANTES) were determined by ELISA using commercially available kits. RESULTS: Both radicular and residual cyst fluids contained IL-1alpha, TNF-alpha, MCP-1, and RANTES, concentrations of which were significantly higher in the radicular cyst fluids than those in the residual cysts (P < 0.001 for IL-1alpha, TNF-alpha, and RANTES; P < 0.01 for MCP-1). Compared to the other mediators, the concentration of IL-1alpha was found to be highest in both of the cyst fluids. In addition, positive correlations were found between IL-1alpha, TNF-alpha, MCP-1, and RANTES in radicular and residual cyst fluids. CONCLUSION: If the radicular cyst is inadvertently left behind following tooth extraction, some degree of inflammation may carry on. Residual cysts, although to a lesser extend than radicular cysts, have the potential to expand. [ABSTRACT FROM AUTHOR]
- Published
- 2008
123. Comparación del dolor a Ia inyección de articaína con adrenalina, prilocaína con fenilpresina y lidocaína con adrenalina.
- Author
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Sumer, M., Misir, F., Çelebi, N., and Muğlali, M.
- Abstract
Copyright of Medicina Oral, Patologia Oral y Cirugia Bucal is the property of Medicina Oral SL and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2009
124. Panoramic radiographic examination of edentulous mouths.
- Author
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Sumer AP, Sumer M, Güler AU, and Bicer I
- Abstract
OBJECTIVE: Panoramic radiographs often are the first method used to screen edentulous patients before complete denture therapy. However, routine radiographic examination of edentulous patients is being questioned because of the cumulative effects and cost of radiation exposure. The purpose of this study was to determine the frequency and location of significant radiographic findings in edentulous jaws. METHOD AND MATERIALS: Panoramic radiographs from 338 patients were included in the survey (183 men, 155 women; 676 edentulous arches). The radiographs were evaluated by 1 oral radiology specialist for the following clinically significant radiographic findings: retained root fragments, impacted teeth, radiolucencies associated with cysts, radiopacities associated with localized sclerotic bone formation, location of the mental foramen on the crest, and location of the maxillary sinus close to the crest of the ridge. The data were analyzed using descriptive statistics. RESULTS: Radiographic findings were found in 47.6% (56.5% women, 43.5% men) of the edentulous patients. Fifty-two subjects (29 women, 23 men) had 67 submucosal or intrabony root remains, 50 of which were located in the maxilla. The most frequent finding was retained root fragment, followed by radiopacities. Impacted teeth were found in 11 women and 10 men. In 15 patients the mental foramen was situated at the top of the residual ridge. Of these patients, 13 were women and 2 were men. In 29 patients (14 women, 15 men) the maxillary sinus was close to the crest of the ridge. Six patients (3 women, 3 men) had a bilateral maxillary sinus close to the crest of the ridge. The other 23 patients had a unilateral maxillary sinus close to the crest of the ridge, and except for in 2 men, all were in the left side of the maxilla. CONCLUSION: Routine panoramic examination of the jaws is necessary to detect impacted teeth, retained root fragments, and other radiographic findings that may require treatment before construction of complete dentures. [ABSTRACT FROM AUTHOR]
- Published
- 2007
125. Spot Tests Used for Systematic Identification of Drugs of Abuse
- Author
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Rorke, Charles V., primary, Harris, H.A., additional, Catalano, Thomas, additional, and Dugar, Sumer M., additional
- Published
- 1976
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126. Measurement of extremely small pressure differences in water
- Author
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Weihs, D, primary and Sumer, M, additional
- Published
- 1973
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127. Discoloration Effect of Diluents in Contraband Cocaine
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Thomas Catalano, Richard Cerrato, and Sumer M. Dugar
- Subjects
medicine.medical_specialty ,business.industry ,Genetics ,medicine ,Police department ,Psychiatry ,business ,humanities ,Pathology and Forensic Medicine - Abstract
In the course of police investigations of confiscated drug samples, cocaine mixtures of various shades from white to brown have been encountered and analyzed at the Crime Laboratory of the New York City Police Department. Slight discoloration of cocaine mixtures is within reason, in view of the reported discoloration of lactose [1,2] and of lactose-amphetamine [3–5] upon storage.
- Published
- 1974
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128. Compressive strength and sulfate resistance properties of concretes containing Class F and Class C fly ashes
- Author
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Mansur Sümer, Sumer, M, Sakarya Üniversitesi/Mühendislik Fakültesi/İnşaat Mühendisliği Bölümü, and Sümer, Mensur
- Subjects
Cement ,Materials science ,Materials Science ,fungi ,technology, industry, and agriculture ,Building and Construction ,chemistry.chemical_compound ,Compressive strength ,Properties of concrete ,chemistry ,Fly ash ,Compression test ,General Materials Science ,Composite material ,Sulfate ,Civil and Structural Engineering - Abstract
This paper presents the results of an experimental investigation carried out to evaluate compressive strength and sulfate resistance properties of concrete mixtures in which Turkish Class C and Class F fly ashes were partially replaced with cement. A total of 39 mixtures with different mix designs were prepared. Compressive strength tests were carried out and the mixtures with similar compressive strength values were used for sulfate resistance tests. The degree of sulfate attack was evaluated using expansion and weight loss tests. Compression test results indicate that the concrete mixture with Class C fly ash showed higher compressive strength than that with Class F fly ash. Moreover, regardless the fly ash type, the addition of fly ash significantly increased the resistance to sulfate attack. (C) 2012 Elsevier Ltd. All rights reserved.
- Published
- 2012
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129. Effect of pre-setting pressure applied to mechanical behaviours of reactive powder concrete during setting phase
- Author
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İpek, Metin, Yılmaz, Kemalettin, Sümer, Mensur, Sarıbıyık, Mehmet, İpek, Mediha, Ipek, M, Yilmaz, K, Sumer, M, Saribiyik, M, Sakarya Uygulamalı Bilimler Üniversitesi/Teknoloji Fakültesi/İnşaat Mühendisliği Bölümü, İpek, Metin, Yılmaz, Kemalettin, Sümer, Mensur, Sarıbıyık, Mehmet, and İpek, Mediha
- Subjects
Materials science ,Compressive strength ,Computer software ,General Materials Science ,Building and Construction ,Composite material ,Curing (chemistry) ,Civil and Structural Engineering - Abstract
In this study, mixing rates, fiber content and pre-setting pressure of reactive powder concrete (RPC) were examined. Mixing ratios were determined by different mixing techniques in literature using material characteristics via computer software. The samples were prepared according to these mixing ratios. The fresh (plastic) concrete samples were filled in a specified mould. Six different (0, 5, 10, 15, 20, 25 MPa) pre-setting pressure were applied. It is observed that application of pre-setting pressure increased compressive strength of the samples about twice. (C) 2010 Elsevier Ltd. All rights reserved.
- Published
- 2011
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130. Utilization of marble dust, fly ash and waste sand (Silt-Quartz) in road subbase filling materials
- Author
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Seyhan Firat, Ahmet Tuna Cömert, M. Sümer, Gülgün Yılmaz, Anadolu Üniversitesi, Eskişehir Meslek Yüksekokulu, Yılmaz, Gülgün, Firat, S, Yilmaz, G, Comert, AT, Sumer, M, Sakarya Üniversitesi/Teknoloji Fakültesi/İnşaat Mühendisliği Bölümü, Fırat, Seyhan, and Sümer, Mensur
- Subjects
California Bearing Ratio ,Waste management ,Xrd ,Compaction ,Fly Ash ,Silt ,California bearing ratio ,Industrial waste ,Permeability ,Waste Sand ,Permeability (earth sciences) ,Engineering ,Marble Dust ,Fly ash ,Soil water ,Sem ,Quartz ,Geology ,Civil and Structural Engineering - Abstract
WOS: 000310382500006, Large volumes of earthen materials are used in construction each year in Turkey and elsewhere. The wastes generated from these materials can be utilised in various applications including road subbase filling materials. In this study, three different types of wastes namely fly ash, marble dust and waste sand are used. These wastes were mixed with natural soils as a potential alternative filling materials in the road subbase. Two types of natural soils were replaced with 0%, 5%, 10%, 15%, 20% of fly ash, marble dust and waste sand. Standard compaction, permeability and saturated California Bearing Ratio (CBR) tests, X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) analysis were performed on two types of natural soils, containing three industrial waste types in different ratios. The study indicates that the fly ash, marble dust and waste sand are fairly good additive materials in road subbase fill and reaction substantially improves their CBR, swelling ratio and water conductivity. It was found that a clear optimum replacement level of 15% for all of these by products for medium and low plasticity type of soils., Sakarya University Scientific Researches Unit [2009-50-02-007], This study was completed with the support provided by Sakarya University Scientific Researches Unit (BAP/Dr-Thesis) Project numbered 2009-50-02-007; thus, the authors would like to acknowledge their gratitude to Sakarya University. Also, the authors would like to sincere thanks to the two anonymous referees and Dr. Jamal Khatib from Wolverhampton University for their valuable comments on the paper.
- Published
- 2012
131. Comparison on efficiency factors of F and C types of fly ashes
- Author
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Emrah Gürbüz, Hasan Yildirim, Veysel Akyuncu, Mansur Sümer, Yildirim, H, Sumer, M, Akyuncu, V, Gurbuz, E, Sakarya Üniversitesi/Mühendislik Fakültesi/İnşaat Mühendisliği Bölümü, Sümer, Mensur, and Gürbüz, Ertuğrul
- Subjects
Cement ,Materials science ,Aggregate (composite) ,Metallurgy ,Young's modulus ,Building and Construction ,Pozzolan ,law.invention ,Efficiency factor ,symbols.namesake ,Portland cement ,Compressive strength ,law ,Fly ash ,symbols ,General Materials Science ,Composite material ,Civil and Structural Engineering - Abstract
Fly ashes are obtained from thermal power plants and they are pozzolanic materials, which can act as partial replacement material for both portland cement and fine aggregate. With their economical advantages and potential for improving fresh and hardened concrete performance, they have some benefits for using in concrete industry. In this study, the objective was to find the efficiency factors of Turkish C and F-type fly ashes and to compare their properties. Three different cement dosages were used (260, 320, 400 kg/m(3)), two different ratios (10% and 17%) of cement reduced from the control concretes and three different ratios (depending on cement reduction ratio) of fly ash were added into the mixtures. At the ages of 28 and 90 days, compressive strength, modulus of elasticity and ultrasound velocity tests were carried out. From the compressive strength results, the k efficiency factors of C and F-type fly ashes were obtained. As a result, it is seen that efficiency factors of the concrete produced by the replacement of F and C type fly ashes with cement increase with the increase in cement dosage and concrete age. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.
- Published
- 2011
132. Performance of self-compacting concrete containing different mineral admixtures
- Author
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Uysal, Mücteba, Sümer, Mensur, Uysal, Mehmet, Uysal, M, Sumer, M, Sakarya Üniversitesi/Mühendislik Fakültesi/İnşaat Mühendisliği Bölümü, Uysal, Mücteba, Sümer, Mensur, and Uysal, Mehmet
- Subjects
Mineral ,Materials science ,Magnesium ,Sodium ,Metallurgy ,chemistry.chemical_element ,Building and Construction ,law.invention ,Sulphate resistance ,Portland cement ,Compressive strength ,chemistry ,Ground granulated blast-furnace slag ,law ,Fly ash ,General Materials Science ,Composite material ,Civil and Structural Engineering - Abstract
This paper presents experimental study on the properties of self-compacting concrete (SCC). Portland cement (PC) was replaced with fly ash (FA), granulated blast furnace slag (GBFS), limestone powder (LP), basalt powder (BP) and marble powder (MP) in various proportioning rates. The influence of mineral admixtures on the workability, compressive strength, ultrasonic pulse velocity, density and sulphate resistance of SCC was investigated. Sulphate resistance tests involved immersion in 10% magnesium sulphate and 10% sodium sulphate solutions for a period of 400 days. The degree of sulphate attack was evaluated using visual examination and reduction in compressive strength. The test results showed that among the mineral admixtures used, FA and GBFS significantly increased the workability and compressive strength of SCC mixtures. Replacing 25% of PC with FA resulted in a strength of more than 105 MPa at 400 days. Moreover, the presence of mineral admixtures had a beneficial effect on the strength loss due to sodium and magnesium sulphate attack. On the other hand, the best resistance to sodium and magnesium sulphate attacks was obtained from a combination of 40% GBFS with 60% PC. (C) 2011 Elsevier Ltd. All rights reserved.
- Published
- 2011
133. Evaluation of tribological behaviour of PEEK and glass fibre reinforced PEEK composite under dry sliding and water lubricated conditions
- Author
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Mensur Sümer, Huseyin Unal, Abdullah Mimaroglu, Sumer, M, Unal, H, Mimaroglu, A, Sakarya Üniversitesi/Mühendislik Fakültesi/İnşaat Mühendisliği Bölümü, Sümer, Mensur, Ünal, Hüseyin, and Mimaroğlu, Abdullah
- Subjects
chemistry.chemical_classification ,Materials science ,Composite number ,Glass fiber ,Materials Science ,Surfaces and Interfaces ,Polymer ,Tribology ,Condensed Matter Physics ,Surfaces, Coatings and Films ,chemistry ,Mechanics of Materials ,Materials Chemistry ,Peek ,Lubricant ,Composite material ,Coefficient of friction - Abstract
In this study, the tribological performance of pure polyetheretherketone (PEEK) and 30 wt% fibre glass (GFR) reinforced PEEK composite were studied at dry sliding and water lubricated conditions. Wear tests were carried out with configuration of a polymer pin on a rotating AISI D2 disc. Test conditions were atmospheric conditions, 1.77,3.54,5.30 MPa pressures and 0.80,1.60 m/s sliding speeds. The results show that the coefficient of friction and specific wear rates for pure PEEK and PEEK + 30 wt% GFR composite slightly in increase with the increase in applied pressure values. On the other hand the coefficient of friction is in decrease while the specific wear is in increase with the increase in sliding speed values. Moreover, for the range of pressure and sliding speed of this study, the coefficient of friction and specific wear rates using water lubricant registered lower values than that of the dry condition. The influence of GFR fibre on the coefficient of friction and wear of the composite is more pronounced at dry wear test condition. Finally the specific wear rates for pure PEEK and PEEK + 30 wt% GFR underwater lubricated condition were in the order of 10(-15) m(2)/N while under dry sliding condition this value is in the order of 10(-14) m(2)/N. (c) 2008 Elsevier B.V. All rights reserved.
- Published
- 2008
134. Filler and superplasticizer usage on high strength concrete
- Author
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Sümer, Mensur, Sumer, M, Sakarya Üniversitesi/Mühendislik Fakültesi/İnşaat Mühendisliği Bölümü, and Sümer, Mensur
- Subjects
Materials Science - Abstract
In this research, the effects of filler (rock-dust) usage on high strength concrete have been investigated through lab experiments and some results have been obtained. The experiments involved three series of concrete with different cement proportions of 375 kg/m(3), 400 kg/m(3), and 425 kg/M-3. For each series of concrete, three different groups of samples have been prepared, the first one being the reference concrete which contained 0% chemical admixture and 0% filler, the second one contained 1.5% chemical admixture and 0% filler and finally the last group contained 1.5% chemical admixture and 5% filler to the weight of cement used. The chemical admixture used was a type of Super plasticizer with a brand name of "DARACEM 190", and the cement used was Ordinary Portland Cement of target compressive strength 42.5 N/mm(2). obtained from Nuh Cement Plant. For each batch, Slump Tests and Unit Weight Tests were performed. For each stage and group, two 15 cm cubic samples have been tested for Compressive Strength after being cured in water at 20 +/- 2 degrees C for ages of 3 days, 7 days, 28 and 60 days. The total number of samples was 72. As a result, filler usage was found to reduce the porosity of Concrete, increase the Unit Weight of Concrete, increase the need For water and improve the Compressive Strength Properties of Concrete.
- Published
- 2007
135. Use of zeolite, coal bottom ash and fly ash as replacement materials in cement production
- Author
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M. Sumer, Mehmet Metin Kose, M.A. Yurdusev, Fethullah Canpolat, Kemalettin Yilmaz, Canpolat, F, Yilmaz, K, Kose, MM, Sumer, M, Yurdusev, MA, Sakarya Üniversitesi/Mühendislik Fakültesi/İnşaat Mühendisliği Bölümü, Yılmaz, Kemalettin, and Sümer, Mensur
- Subjects
Cement ,Materials science ,business.industry ,Materials Science ,Building and Construction ,Pozzolan ,law.invention ,Portland cement ,Compressive strength ,law ,Fly ash ,Bottom ash ,General Materials Science ,Coal ,Composite material ,Zeolite ,business - Abstract
In this research, the effects of zeolite, coal bottom ash and fly ash as Portland cement replacement materials on the properties of cement are investigated through three different combinations of tests. These materials are substituted for Portland cement in different proportions, and physical properties such as setting time, volume expansion, compressive strength and water consistency of the mortar are determined. Then, these physical properties are compared with those of PC 42.5. The results showed that replacement materials have some effects on the mechanical properties of the cement. The inclusion of zeolite up to the level of 15% resulted in an increase in compressive strength at early ages, but resulted in a decrease in compressive strength when used in combination with fly ash. Also, setting time was decreased when zeolite was substituted. The results obtained were compared with Turkish Standards (TS), and it was found that they are above the minimum requirements. (C) 2004 Published by Elsevier Ltd.
- Published
- 2004
136. Recent Advances in Indirect Pulp Treatment Materials for Primary Teeth: A Literature Review.
- Author
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Saber AM, El Meligy OA, and Alaki SM
- Abstract
Aim: To provide an overview of the techniques of indirect pulp treatment (IPT) and the new materials used., Background: Indirect Pulp Treatment (IPT) is a conservative treatment approach that can be used in primary molars. Pulpotomy has been adopted as the treatment of choice for deep caries in primary molars. IPT showed higher success rates in recent researches., Materials and Methods: Electronic search of English scientific papers was accomplished using PubMed, ScienceDirect, and Scopus. Papers published from 1995 to 2019 were included. Search terms used were recent advances, indirect pulp treatment, mineral trioxide aggregate (MTA), biodentine, TheraCal-LC, chlorhexidine gluconate (CHX), resin-modified glass ionomer (RMGI), and calcium hydroxide., Review Results: Seventy two papers were obtained from the electronic search and references of selected studies. Thirty five papers explained recent advances in IPT materials for primary molars. MTA produces more dentinal bridging with superior quality than calcium hydroxide. Similarly, Biodentine can form reparative dentin in a very short period. TheraCal-LC has increased stability and durability with strong physical properties and low solubility. Furthermore, CHX is a chemical disinfectant which can aid in increasing the success rate of IPT when conjugated with other materials. It produced highly successful IPT when combined with RMGI or calcium hydroxide., Conclusion: IPT is the preferred treatment approach for preservation of primary dentition. CHX is an emerging material that can provide promising results in IPT when combined with other materials., Clinical Significance: Up to date, no material had replaced the popular use of calcium hydroxide in IPT. The use of CHX with RMGI can increase the success rate while preserving the advantages of the latter as it is considered the liner of choice for primary teeth, making IPT a suitable substitute for pulpotomy in primary molars., How to Cite This Article: Saber AM, El Meligy OA, Alaki SM. Recent Advances in Indirect Pulp Treatment Materials for Primary Teeth: A Literature Review. Int J Clin Pediatr Dent 2021;14(6):795-801., Competing Interests: Source of support: Nil Conflict of interest: None, (Copyright © 2021; The Author(s).)
- Published
- 2021
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137. Assessment of the reliability of radiographic signs on panoramic radiographs to determine the relationship between mandibular third molars and the inferior alveolar canal.
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Uzun C, Sumer AP, and Sumer M
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- Humans, Mandible, Mandibular Nerve, Molar, Third, Radiography, Panoramic, Reproducibility of Results, Tooth Extraction, Tooth, Impacted, Trigeminal Nerve Injuries
- Abstract
Objective: To assess the reliability of radiographic signs of the relationship between impacted mandibular third molars (IMTMs) and the inferior alveolar canal (IAC), and the vertical relationship between IMTM and IAC on panoramic radiographs (PRs) as risk indicators for IAC exposure during extraction., Study Design: Seven radiographic signs regarding the appearance of roots and the IAC were assessed as present or absent on PRs. The vertical relationship between IMTM and the IAC was divided into 3 levels. The correlation between radiographic data and IAC exposure during extraction was analyzed by using χ
2 statistics and logistic regression analysis., Results: In total, 198 IMTMs were examined. In 46 cases (23.2%), the IAC was exposed during extraction. Four radiographic signs-darkening of the root, narrowing of the root, narrowing of the IAC, and diversion of the IAC-were associated with IAC exposure (P < .05). Concurrence of 2 or more of 7 radiographic signs increased the risk of IAC exposure (P < .001). The vertical relationship between IMTM and the IAC was found to be a risk indicator for IAC exposure (P < .001). No significant correlation was found between IAC exposure and inferior alveolar nerve damage (P = .148)., Conclusions: Panoramic radiography is useful for assessing the risk of IAC exposure during IMTM extraction., (Copyright © 2019 Elsevier Inc. All rights reserved.)- Published
- 2020
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138. Maxillary sinus aspergilloma of odontogenic origin: Report of 2 cases with cone-beam computed tomographic findings and review of the literature.
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Torul D, Yuceer E, Sumer M, and Gun S
- Abstract
Aspergilloma of the maxillary sinus is considered rare in immunocompetent patients, but a considerable increase has recently been seen in the incidence of reported cases. Dental procedures involving the antral region are thought to predispose individuals to this form of aspergillosis. Because aspergilloma shares similar clinical features with other sinus pathologies, its diagnosis may be delayed. Thus, an early diagnosis confirmed by a histopathological examination plays a crucial role in the adequate management of aspergilloma. This article provides a concise review of the reported cases of aspergilloma associated with dental procedures and reports 2 new cases of aspergilloma in middle-aged female patients, with a presentation of their cone-beam computed tomographic findings.
- Published
- 2018
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139. Benign cementoblastoma of the anterior mandible: an unusual case report.
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Çalışkan A, Karöz TB, Sumer M, Açıkgöz A, and Süllü Y
- Abstract
A benign cementoblastoma, which is another name for a true cementoma, is a rare neoplasm that develops from odontogenic ectomesenchyme. It is characterized by a mineralized mass attached to the apex of the root produced by neoplastic cementoblasts. More than 75% of cases arise in the mandible, with 90% of them manifesting in the molar and premolar regions. This neoplasm occurs most commonly in children and young adults, with males being affected slightly more than females. Radiographically, the tumor is observed as a well-defined radiopaque mass that is fused to a tooth root and is surrounded by a radiolucent rim. The treatment of benign cementoblastoma consists of removal of the lesion and extraction of the affected tooth. This report presents an unusual case of benign cementoblastoma in a 31-year-old female, presenting as a densely mineralized mass seen at the apex of the impacted right mandibular canine tooth on radiographs., Competing Interests: No potential conflict of interest relevant to this article was reported.
- Published
- 2016
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140. Assessment of heat generation during implant insertion.
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Sumer M, Keskiner I, Mercan U, Misir F, and Cankaya S
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- Animals, Cattle, Dental Implantation, Endosseous instrumentation, Femur physiopathology, Hot Temperature, Osteotomy instrumentation, Osteotomy methods, Rotation, Surface Properties, Thermometers, Body Temperature physiology, Dental Implantation, Endosseous methods, Dental Implants, Femur surgery
- Abstract
Statement of Problem: Many studies have investigated the heat generated during implant preparation, but data are needed to better predict heat generation during implant insertion., Purpose: The purpose of this study was to measure the heat generated during insertion of an implant at speeds of 30, 50, and 100 rpm, and with manual insertion., Material and Methods: Sixty-four uniform fresh bovine femoral cortical bone specimens were used. After the cortical bone was drilled, 3 different implant insertion speeds and the manual insertion of the implant were evaluated for 2 different implant diameters. The temperature was measured with 2 Teflon-insulated, type K thermocouples. Data were analyzed by 2-way ANOVA, and the Tukey honestly significant difference test (α=.05)., Results: The highest thermal change for 4.1-mm-diameter implants was found at a speed of 100 rpm (9.81°C ±2.29°C), and the lowest thermal change was 3.69°C ±0.85°C at a speed of 30 rpm. A statistically significant difference was found between 100 rpm and the other 3 insertion procedures. The highest thermal change for a 4.8-mm-diameter implant was found at a speed of 100 rpm (8.79°C ±1.53°C), and the lowest thermal change was 4.48°C ±0.85°C at a speed of 30 rpm. No statistical difference was observed with manual, 30 rpm, and 50 rpm; however, a statistically significant difference was found between 100 rpm and the other 3 insertion procedures., Conclusions: Manual implant insertion and at speeds of 30 rpm and 50 rpm generated lower heat compared with insertion at 100 rpm., (Copyright © 2014 Editorial Council for the Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved.)
- Published
- 2014
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141. Advancement of the premaxilla with distraction osteogenesis.
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Cakmak F, Turk T, and Sumer M
- Subjects
- Adolescent, Cephalometry methods, Face pathology, Female, Humans, Male, Orthodontic Appliance Design, Orthodontic Appliances, Functional, Osteogenesis, Distraction instrumentation, Treatment Outcome, Young Adult, Malocclusion, Angle Class I surgery, Maxilla surgery, Osteogenesis, Distraction methods
- Abstract
Objectives: The aim of this study was to evaluate the effects of premaxillary advancement with distraction osteogenesis (DO) on the skeletal, dental, and soft tissues., Materials and Methods: A total of 21 cases with Angle class I molar relationship and negative overjet or edge-to-edge incisor relationship were included. Due to patient relocation during fixed orthodontic treatment the results of 19 patients (9 females, 10 males) were reported. Their average chronological age was 16.18 ± 3.10 years. An individual tooth-borne distraction appliance was used. Skeletal, dental, and soft tissue changes were evaluated on cephalograms obtained before treatment (T1), at the end of the consolidation period (T2) and fixed orthodontic treatment (T3). Friedman and Wilcoxon tests were applied to determine the significant differences during T1-T2, T2-T3, and T1-T3 periods., Results: At T2 forward movements of ANS, A, and upper incisors were significant. Significant increases of SNA, ANB, and overjet were obtained. The soft tissue points of Pn, Sn, Ss, Ls showed significant anterior movement. Arch length increase of 10.76 mm was significant. At T3 the decreases of SNA and ANB angles, and FH ┴ N-A distance were significant. Pn point showed significant anterior movement. Total treatment time showed significant anterior movement of points ANS, A, and upper incisors. Significant increase of SNA and ANB angles was noted. The soft tissue points followed the movement of the underlying hard tissue., Limitation: A class III control group could not be established for ethical reasons., Conclusions: The facial profile was improved and space was obtained to solve the maxillary anterior crowding with premaxillary advancement through DO.
- Published
- 2014
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142. Alveolar ridge expansion-assisted orthodontic space closure in the mandibular posterior region.
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Ozer M, Akdeniz BS, and Sumer M
- Abstract
Orthodontic closure of old, edentulous spaces in the mandibular posterior region is a major challenge. In this report, we describe a method of orthodontic closure of edentulous spaces in the mandibular posterior region accelerated by piezoelectric decortication and alveolar ridge expansion. Combined piezosurgical and orthodontic treatments were used to close 14- and 15-mm-wide spaces in the mandibular left and right posterior areas, respectively, of a female patient, aged 18 years and 9 months, diagnosed with skeletal Class III malocclusion, hypodontia, and polydiastemas. After the piezoelectric decortication, segmental and full-arch mechanics were applied in the orthodontic phase. Despite some extent of root resorption and anchorage loss, the edentulous spaces were closed, and adequate function and esthetics were regained without further restorative treatment. Alveolar ridge expansion-assisted orthodontic space closure seems to be an effective and relatively less-invasive treatment alternative for edentulous spaces in the mandibular posterior region.
- Published
- 2013
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143. Temperature variation on root surface with three root-end cavity preparation techniques.
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Bodrumlu E, Keskiner I, Sumer M, and Telcioglu NT
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- Dental Cavity Preparation instrumentation, Diamond, Humans, Tungsten, Ultrasonics, Apicoectomy, Dental Cavity Preparation methods, Temperature
- Abstract
Introduction: Thermal changes can occur on the external root surface when root-end cavity preparation is performed, which may damage periodontal ligament cells and alveolar bone., Objective: The purpose of this study was to evaluate the temperature changes during preparation of the root-end cavities at 1 and 3 mm to the sectioned apical root surfaces when either tungsten carbide round bur, diamond round bur or ultrasonic diamond tip was used., Methods: Root-end resection was performed at 90 degrees to the long axis of the root, 3 mm from the apex. Specimens were randomly divided into three groups of 12 teeth each for three different root-end cavity preparation techniques to be used, i.e. tungsten carbide bur, diamond bur and ultrasonic diamond retro tip.Thermocouples were used to measure temperature changes at 1 mm (T1) and 3 mm (T2) to the cutting plane during the preparations., Results: For T1, the lowest and the highest mean temperature increases of 3.53 degrees C and 4.34 degrees C were recorded for the carbide and diamond burs, respectively. For T2, the lowest and the highest mean temperature increases of 2.62 degrees C and 4.39 degrees C where recorded for the carbide and diamond burs, respectively. The mean temperatures with the ultrasonic tip were 3.68 and 3.04 degrees C at T1 and T2 region, respectively. For root-end preparation, the ultrasonic preparation technique took the shortest preparation time (10.25 sec) and the diamond bur took the longest time (28.17 sec)., Conclusion: Ultrasonic retro tips and burs caused temperature to rise from 2.62 degrees to 4.39 degrees C, and these rises were within safety levels.
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- 2013
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144. Resonance frequency analysis of 208 Straumann dental implants during the healing period.
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Guler AU, Sumer M, Duran I, Sandikci EO, and Telcioglu NT
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- Acid Etching, Dental methods, Adolescent, Adult, Aged, Aged, 80 and over, Biocompatible Materials chemistry, Bone Density physiology, Dental Etching methods, Female, Humans, Hydrochloric Acid chemistry, Male, Mandible surgery, Maxilla surgery, Middle Aged, Sex Factors, Sulfuric Acids chemistry, Surface Properties, Titanium chemistry, Vibration, Wound Healing physiology, Young Adult, Dental Implants, Dental Prosthesis Design, Osseointegration physiology
- Abstract
The most important prerequisite for the success of an osseointegrated dental implant is achievement and maintenance of implant stability. The aim of the study was to measure the 208 Straumann dental implant stability quotient (ISQ) values during the osseointegration period and determine the factors that affect implant stability. A total of 164 of the implants inserted were standard surface, and 44 of them were SLActive surface. To determine implant stability as ISQ values, measurements were performed at the stage of implant placement and healing periods by the Osstell mentor. The ISQ value ranges showed a significant increase during the healing period. Except for the initial measurement, the posterior maxilla had the lowest ISQ values, and there was no significant difference among anterior mandible, posterior mandible, and anterior maxilla (P < .05). Implant length did not have a significant influence on ISQ value (P > .05). The second measurement was significantly higher in men compared with women (P < .05). The second measurement was significantly higher than the others at 4.8 mm, and for the final measurement, there were no significant differences between 4.8 and 4.1 mm, which were higher than 3.3 mm (P < .05). When comparing sandblasted, large-grit, acid-etched (SLA) and SLActive surface implants, there were no significant differences for insertion measurements, but for second measurements, SLActive was significantly higher (P = 0), and for the final measurement, there was no significant difference. It appears that repeated ISQ measurements of a specific implant have some diagnostic benefit, and the factors that affect implant stability during the healing period are presented.
- Published
- 2013
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145. Autogenous cortical bone and bioactive glass grafting for treatment of intraosseous periodontal defects.
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Sumer M, Keles GC, Cetinkaya BO, Balli U, Pamuk F, and Uckan S
- Abstract
Objective: The aim of this 6-month prospective randomized clinical study was to compare the effectiveness of autogenous cortical bone (ACB) and bioactive glass (BG) grafting for the regenerative treatment of intraosseous periodontal defects., Methods: Via a split-mouth design, 15 chronic periodontitis patients (7 men, 8 women; mean age, 43.47 ± 1.45 years) who had probing pocket depths (PPDs) of ⩾6 mm following initial periodontal therapy were randomly assigned to receive 2 treatments in contralateral areas of the dentition: ACB grafting and BG grafting. The parameters compared in the patients were preoperative and 6-month postoperative PPDs, clinical attachment levels (CALs), and radiographic alveolar bone heights., Results: Both treatment modalities resulted in significant changes in postoperative measurements when compared to preoperative values (p < 0.01). PPDs were decreased, CALs were increased, and radiographic alveolar bone heights were increased by 5.00 ± 0.28, 4.60 ± 0.21, and 5.80 ± 0.43 mm in patients treated with ACB grafting and 5.13 ± 0.32, 4.67 ± 0.27, and 5.33 ± 0.36 mm in patients treated with BG grafting, respectively. Differences between the treatments were not statistically significant (P>.05)., Conclusions: Within the limitations of this study, both ACB and BG grafting led to significant improvements in clinical and radiographic parameters 6 months postoperatively. These results suggest that either an ACB graft, which is completely safe with no associated concerns about disease transmission and immunogenic reactions, or a BG graft, which has an unlimited supply, can be selected for regenerative periodontal treatment.
- Published
- 2013
146. Ultrasonography in the evaluation of midpalatal suture in surgically assisted rapid maxillary expansion.
- Author
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Sumer AP, Ozer M, Sumer M, Danaci M, Tokalak F, and Telcioglu NT
- Subjects
- Humans, Osteotomy methods, Treatment Outcome, Ultrasonography, Cranial Sutures diagnostic imaging, Maxilla diagnostic imaging, Maxilla surgery, Palatal Expansion Technique, Palate, Hard diagnostic imaging, Palate, Hard surgery
- Abstract
Surgically assisted rapid maxillary expansion (SARME), which combines orthodontics and surgery, is a well-established therapy for transverse maxillary hypoplasia in adults after sutural closure or completion of skeletal maturation. X-rays are usually the preferred monitoring technique for this treatment. Recently, ultrasound scanning has been used successfully in the follow-up of patients undergoing distraction osteogenesis. In this study, ultrasonography (US) was used in the evaluation of bone callus formation in the midpalatal suture in 3 patients undergoing SARME. For each patient, US was performed immediately after active expansion, at 2 and 4 months of the expansion period, at the removal of the expander 6 months later, and at 2 months after expander removal. The results indicated that US might be a useful and accurate method to assess bone fill in the midpalatal suture in patients undergoing SARME. However, further studies are necessary to clarify the US scores in a larger patient group undergoing SARME.
- Published
- 2012
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147. Temperature variation during apicectomy with Er:YAG laser.
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Bodrumlu E, Keskiner I, Sumer M, Sumer AP, and Telcıoglu NT
- Subjects
- Dental Instruments, Humans, In Vitro Techniques, Tungsten, Apicoectomy instrumentation, Laser Therapy instrumentation, Lasers, Solid-State, Temperature
- Abstract
Objective: The purpose of this in vitro study was to evaluate the generated temperature of the Er:YAG laser, with three different pulse durations for apicectomy, compared with tungsten bur and surgical saw., Background Data: Apicectomy is an endodontic surgery performed to remove the root apex and curette adjacent periapical tissue because of lesions of the apical area that are not healing properly., Methods: Sixty single-rooted extracted human teeth were resected by three cutting methods: tungsten bur, surgical saw, and Er:YAG laser irradiation with three different pulse durations; pulse duration 50 μs, pulse duration 100 μs, and pulse duration 300 μs. Teflon-insulated, type K thermocouples were used to measure temperature changes during the apicectomy process. Data were analyzed using the general linear models procedure of the SPSS statistical software program., Results: Although there was no statistically significant difference for the mean values of temperature changes at 1 mm away to the cutting site of teeth, there was statistically significant difference among groups for the mean values of temperature changes at 3 mm away to the cutting site of teeth. Additionally, there was statistically significant difference among groups for the total time required for apicectomy., Conclusions: The laser irradiation with pulse duration 50 μs appears to have the lowest temperature rise and the shortest time required for apicectomy of the three pulse durations. However, Er:YAG laser for apicectomy in all pulse durations could be used safely for resection in endodontics in the presence of sufficient water.
- Published
- 2012
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148. Keratocystic odontogenic tumor: case report with CT and ultrasonography findings.
- Author
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Sumer AP, Sumer M, Celenk P, Danaci M, and Gunhan O
- Abstract
Keratocystic odontogenic tumor (KCOT) is a benign odontogenic tumor with a potentially aggressive and infiltrative behavior. KCOT is most commonly occurred in mandible and demonstrate a unilocular, round, oval, scalloped radiolucent area, while large lesions may appear multilocular. An important characteristic of KCOT is its propensity to grow in an antero-posterior direction within medullary cavity of bone causing minimal expansion. Definitive diagnosis relies on histological examination. In this report, a KCOT that had an expansion both buccal and lingual cortical bone is described including its features in computed tomography and ultrasonographic exams. The lesion was removed surgically via an intraoral approach under local anesthesia and histologically reported as a KCOT.
- Published
- 2012
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149. Comparison of heat generation during implant drilling using stainless steel and ceramic drills.
- Author
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Sumer M, Misir AF, Telcioglu NT, Guler AU, and Yenisey M
- Subjects
- Animals, Biomechanical Phenomena, Cattle, Dental Implantation, Endosseous methods, Equipment Design, Hot Temperature, Materials Testing, Osteotomy methods, Stress, Mechanical, Thermometers, Time Factors, Body Temperature physiology, Ceramics chemistry, Dental Alloys chemistry, Dental Implantation, Endosseous instrumentation, Femur surgery, Osteotomy instrumentation, Stainless Steel chemistry
- Abstract
Purpose: The purpose of this study was to compare the heat generated from implant drilling using stainless steel and ceramic drills., Materials and Methods: A total of 40 fresh bovine femoral cortical bone samples were used in this study. A constant drill load of 2.0 kg was applied throughout the drilling procedures via a drilling rig at a speed of 1,500 rpm. Two different implant drill types (stainless steel and ceramic) were evaluated. Heat was measured with type K thermocouple from 3 different depths. Data were subjected to the independent-sample t test and Pearson correlation analysis. The α level was set a priori at 0.05., Results: The mean maximum temperatures at the depths of 3 mm, 6 mm, and 9 mm with the stainless steel drill were 32.15°C, 35.94°C, and 37.05°C, respectively, and those with the ceramic drill were 34.49°C, 36.73°C, and 36.52°C, respectively. A statistically significant difference was found at the depth of 3 mm (P = .014) whereas there was no significant difference at the depths of 6 and 9 mm (P > .05) between stainless steel and ceramic drills., Conclusion: Within the limitations of the study, although more heat was generated in the superficial part of the drilling cavity with the ceramic drill, heat modifications seemed not to be correlated with the drill type, whether stainless steel or ceramic, in the deep aspect of the cavity. Further clinical studies are required to determine the effect of drill type on heat generation., (Copyright © 2011 American Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.)
- Published
- 2011
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150. Effect of autogenous cortical bone grafting in conjunction with guided tissue regeneration in the treatment of intraosseous periodontal defects.
- Author
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Keles GC, Sumer M, Cetinkaya BO, Tutkun F, and Simsek SB
- Abstract
Objectives: The aim of this clinical trial was to evaluate the additional benefit of using guided tissue regeneration (GTR) with autogenous cortical bone (ACB) grafting versus ACB grafting alone for the regenerative treatment of intraosseous periodontal defects., Methods: Via a split-mouth design, 12 patients with chronic periodontitis (five men, seven women; mean age, 45.3±4.6 years) who had probing pocket depths (PPDs) of ≥6 mm following initial periodontal therapy were randomly assigned to two treatments in contralateral areas of the dentition: a combination of ACB grafting and GTR (with a absorbable membrane of polylactic acid) or ACB grafting alone. The compared parameters were preoperative and 6-month postoperative PPDs, clinical attachment levels (CALs), and radiographic alveolar bone heights., Results: Both treatment modalities resulted in significant changes in the postoperative measurements from the preoperative values (P<.01). The reduction in the PPDs, gain in the CALs, and gain in the radiographic alveolar bone heights were 4.58±1.08, 4.25±1.06, and 5.50±2.24 mm in the patients treated with ACB grafting and GTR and 4.92±1.00, 4.50±0.80, and 5.92±1.83 mm in those treated with ACB grafting alone, respectively. The differences between the treatments were not statistically significant (P>.05)., Conclusions: Within the study limitations, both ACB grafting with GTR and ACB grafting alone lead to significant improvements in clinical and radiographic parameters at 6 months postoperatively. The combined approach does not provide any additional benefit for treating intraosseous periodontal defects.
- Published
- 2010
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