Search

Your search keyword '"Meneghetti, Priscila Ceolin"' showing total 3 results
Start Over Author "Meneghetti, Priscila Ceolin" Topic dental implant
3 results on '"Meneghetti, Priscila Ceolin"'

1. Fracture Load of Monolithic CAD/CAM Ceramic Crowns Placed on Different Implant Abutments.

Author

Meneghetti, Priscila Ceolin, Pittas do Canto, Paulo Eduardo, Spohr, Ana Maria, and Burnett Junior, Luiz Henrique

Subjects
DENTAL implants, DENTAL crowns, STATISTICS, COMPUTER-aided design, BICUSPIDS, DENTAL resins, ANALYSIS of variance, SYNTHETIC gums & resins, DENTAL abutments, TOOTH fractures, MATERIALS testing, RESEARCH funding, DENTAL fillings, DATA analysis, DATA analysis software, DENTAL cements
Abstract

Purpose: To evaluate the fracture load of monolithic, single-tooth implant-supported crowns cemented on solid or Ti-base (Variobase C) abutments. Materials and Methods: Besides abutment types (solid and Ti-base abutments), two ceramic systems (IPS e.max CAD and Zirconia inCoris ZI) and two occlusal thicknesses (0.5 and 1.5 mm) were also investigated in this study. In total, eight groups (n = 8) with 64 maxillary second premolar crowns were fabricated. All the crowns were cemented with resin cement, and the screw accesses in Ti-base groups were sealed with composite resin. After mechanical cycling, the specimens were submitted to fracture load test with the maximum force recorded in Newtons (N). Three-way analysis of variance (ANOVA) and Tukey post hoc test were used for statistical analyses (α = .05). Results: Both the abutment type (P = .0001) and the ceramic system (P = .0001) significantly affected the results. Screw-access channels reduced the fracture load of crowns by half compared to those cemented on solid abutments. The 1.5-mm and 0.5-mm zirconia crowns placed on solid abutments had similar highest fracture loads, while the e.max CAD groups positioned on Ti-base abutments showed significantly lower values compared with other groups. Conclusion: The screw access reduces the resistance of crowns supported by Ti-base abutments compared to crowns cemented on solid abutments. The inCoris ZI showed a higher fracture load than the IPS e.max CAD regardless of the abutment type and thickness. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

2. Early soft tissue changes following implant placement with or without soft tissue augmentation using a xenogeneic cross‐link collagen scaffold: A volumetric comparative study.

Author

Tavelli, Lorenzo, Barootchi, Shayan, Vera Rodriguez, Maria, Mancini, Leonardo, Meneghetti, Priscila Ceolin, Mendonça, Gustavo, and Wang, Hom‐Lay

Subjects
DENTAL implants, COLLAGEN, CONNECTIVE tissues, HUMAN anatomical models, COMPARATIVE studies, DESCRIPTIVE statistics, TISSUE scaffolds, DIGITAL diagnostic imaging
Abstract

Objective: Soft tissue augmentation (STA) at implant sites has the potential of improving peri‐implant health, esthetics, and marginal bone level stability. The present study aimed at evaluating the volumetric changes occurring following implant placement in sites that received STA compared to non‐augmented sites. Methods: A total of 26 subjects received a dental implant in a posterior edentulous site. Simultaneous STA with a xenogeneic cross‐linked collagen scaffold was performed for the first 13 patients, while the remaining subjects served as the negative control. An intraoral optical scanner was used at baseline and at 12 weeks to generate digital models. Results: The mean volume (Vol) gain of the test group was 38.43 mm3, while a mean Vol of −16.82 mm3 was observed for the control group (p < 0.05). The mean thickness of the reconstructed volume (ΔD) was 0.61 and −0.24 mm, for the test and control group, respectively (p < 0.05). Higher linear dimensional changes were observed for the test group (p < 0.05), while no significant differences were observed in terms of keratinized mucosa width and pocket depth changes between the two groups. Conclusions: Simultaneous STA with xenogeneic collagen scaffold obtained statistically significant higher volumetric outcomes compared to the non‐augmented group. Clinical Significance: STA at the time of implant placement using a xenogeneic cross‐linked collagen scaffold can prevent remodeling of the ridge during the first 12 weeks, as compared to non‐grafted implant sites. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

3. Resist?ncia ? fratura de coroas cer?micas monol?ticas fabricadas em CAD/CAM cimentadas sobre diferentes pilares de implante

Author

Meneghetti, Priscila Ceolin and Burnett Jr., Luiz Henrique

Subjects
Cer?mica Monol?tica, Iithium Dissilicate, ODONTOLOGIA [CIENCIAS DA SAUDE], Resist?ncia ? Fratura, Kirconia, CAD/CAM, Solid Abutment, Implante Dent?rio, Dissilicato de L?tio, zirc?nia, TiBase, Fracture Strength, Monolitic cCramics, Dental Implant, Pilar S?lido
Abstract

Objetivo: avaliar a resist?ncia ? fratura de coroas cer?micas monol?ticas com diferentes espessuras e cimentadas sobre pilar s?lido e tiBase. As hip?teses apresentadas s?o que (i) a presen?a do orif?cio do parafuso de fixa??o diminui a resist?ncia ? fratura das coroas, (ii) o material restaurador influencia na resist?ncia ? fratura, (iii) a espessura da restaura??o influencia na resist?ncia ? fratura das restaura??es. Materiais e m?todos: Um total de 64 coroas de segundo pr?-molar superior foram confeccionadas para os pilares S?lido e Variobase C? (tiBase) sobre o an?logo do implante Straumann Tissue Level. As coroas foram confeccionadas em dissilicato de litio (IPS e.max CAD) e zirc?nia (Incoris ZI) com 0,5 mm e 1,5 mm de espessura na face oclusal, e divididas em 8 grupos (n=8): SE05, SE15, SZ05, SZ15, VE05, VE15, VZ05, VZ15. As coroas foram cimentadas com cimento resinoso e o acesso ao parafuso restaurado com resina composta. Ap?s ciclagem mec?nica, os corpos de prova foram submetidos ao ensaio de resist?ncia ? fratura na m?quina de ensaio universal e a for?a m?xima registrada em Newtons (N). Os resultados obtidos foram submetidos ao teste de Shapiro-Wilk seguido de ANOVA 3-way e Tukey (a= 5%). Resultados: SZ15: 5368,6 N ? 536,74 A; SZ05: 4809,8 N ? 857,55 A; SE15: 2068,8 N ? 359,77 B; SE05: 1887,4N ? 276,94 B; VZ15: 1935,5N ? 274,51 B; VZ05: 1759,4 N ? 334,34 B; VE15: 963,5 N ? 198,92 C; VE05: 924,8 N ? 152,01 C. Conclus?es: A presen?a do canal de acesso ao parafuso reduziu pela metade a resist?ncia ? fratura das coroas quando comparados com as coroas cimentadas sobre pilar s?lido. A zirc?nia Incoris ZI apresentou maior resist?ncia ? fratura do que o IPS e.max CAD independente do pilar e da espessura. As diferentes espessuras das restaura??es tiveram pouca influ?ncia na resist?ncia ? fratura. Objective: to evaluate the fracture strength of monolithic ceramic unit crowns with different thickness and cemented on solid abutment and tiBase. The hypotheses presented are that (i) the presence of the fixing screw hole decreases the crown fracture strength, (ii) the restoring material influences the fracture resistance, (iii) the restoration thickness influences the fracture resistance of the restorations. Materials and methods: A total of 64 upper second premolar crowns were made for the solid abutment and Variobase C? abutment over the implant analog Straumann Tissue Level. The crowns were made of lithium dissilicate (IPS e.max CAD) and zirconia (Incoris ZI) with 0,5 mm and 1,5 mm thickness in the occlusal, and divided into 8 groups (n = 8): SE05, SE15, SZ05, SZ15, VE05, VE15, VZ05, VZ15. The crowns were cemented with resin cement and the screw access restored with composite resin. After mechanical cycling, the specimens were submitted to the test of fracture resistance in the universal test machine and the maximum force recorded in Newtons (N). The results were submitted to the Shapiro-Wilk test followed by 3-way ANOVA and Tukey (a= 5%). Results: SZ15: 5368,6 N ? 536,74 A; SZ05: 4809,8 N ? 857,55 A; SE15: 2068,8 N ? 359,77 B; SE05: 1887,4N ? 276,94 B; VZ15: 1935,5N ? 274,51 B; VZ05: 1759,4 N ? 334,34 B; VE15: 963,5 N ? 198,92 C; VE05: 924,8 N ? 152,01 C. Conclusions: The presence of the screw access channel reduced in half the fracture strength of the crowns when compared to the crowns cemented on a solid abutment. Incoris ZI showed higher fracture resistance than the IPS e.max CAD independent of the abutment and thickness. The different thicknesses of the restorations had little influence on fracture resistance. Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES

Published
2019

Catalog

Books, media, physical & digital resources
See catalog results