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The objective of the present study was to carry out a literature review on “self-care” or, in English, “Over-the-counter” (OTC) bleaching products, consulting articles in the Pubmed and Scielo databases, between the years 2000 and 2019, in order to evaluate its characteristics, advantages and disadvantages of use. We can conclude that the majority of whitening dentifrices and rinses on the market do not have a clinically significant whitening action; in relation to dental strips or strips, they have satisfactory whitening efficacy. However, it is important to emphasize the need for further long-term studies to affirm whether these products are really safe and efficient, since their advantages and disadvantages become doubtful and questionable. Therefore, guidance and monitoring by the dental surgeon in the handling and prescription of such products is extremely important, after all, if used in an indiscriminate and erroneous way, they can cause potentially harmful data to the patient.

Objectives: The scope is tooth whitening at home, the study focuses on the effectiveness of whitening and treatment effects.Material and Method: A search was carried out in the Medline, PubMed, Lilacs and Scielo databases, between the years 2000 to 2019. The keywords used in the databases were as follows: Tooth whitening, hydrogen peroxide, carbamide peroxide, whitening products , tooth, at home, whitening, effects, efficacy, whitening.Results: Of the 23 studies included in this review, 6 studies evaluated the effectiveness of tooth whitening, 4 studies evaluated the effect of whitening on tooth structure, 1 study evaluated the association of whitening treatment with dentifrice, 3 studies evaluated on cytotoxicity / toxicity, 3 studies evaluated the effect of whitening on dental materials, 2 studies assessed the social impact of tooth whitening, 3 studies assessed sensitivity during treatment and 1 study assessed the effect of bleaching gel storage.Conclusion: In order to try to minimize adverse effects that may arise such as sensitivity, cytotoxicity and gingival irritation, use with the minimum exposure time of the product is indicated; the home whitening technique shows less chance of recurrence after treatment.

Currently, oral health issues are increasingly been addressed and virtual reality (VR) is being used as an aid in health areas. However, there is little evidence of VR being used in preventing oral health problems. To evaluate the effectiveness of VR in oral hygiene education. Three hundred pupils, aged between 9 and 12 years, received instructions in oral hygiene by immersion VR and they gave their opinions about the performed activities. Chi-square and Fisher's exact tests were applied, with a significance level of 5%. Part perception of oral hygiene showed no statistically significant difference (P>0.550). There was an increase in the use of dental floss (P0,550). Hubo un aumento en el uso de hilo dental (P

The dental elements present similar and specific anatomical features, depending on the functions they have in the oral cavity. The permanent molars are the most complex structures, mainly the occlusal face, due to their function of food grinding. The aim of the present article is to present the upper first and second molars morphology, emphasizing the similarities and differences between them. Besides, the upper first and second molars of the collection of the Department of Morphology of Universidade Estadual de Paulista (UNESP), School of Dentistry, Araraquara, were evaluated regarding the presence of the oblique ridge, frequency and classification of the molar tubercle, and the crown morphology (upper second molars). In the 372 evaluated upper first molars, the molar tubercle was absent in most of the teeth. When present, the molar tubercle belonged to the mesiolingual cusp; 8.9% were classified as type I; 9.1% as type II; and 9.4% as type III. The oblique ridge was present in all upper first molars. The morphology of 401 upper second molars was also evaluated; 64.83% were tetracuspid; 35.16% tricuspid; and 17.02% presented compression morphology. In 100 tricuspid teeth, 50% presented oblique ridge, with it being prominent in 30%. No upper second molars presented molar tubercle. Although there are similarities between the upper first and second molars, we must always be aware of the features that differ between them, so their functionality can be restored.

Tooth whitening can be considered as one of the simplest, quickest and minimally invasive treatments for the aesthetic improvement of darkened teeth, in addition to presenting a low cost when compared to other restorative aesthetic alternatives...

BACKGROUND Currently, oral health issues have been increasingly addressed, virtual reality (VR), being used as an aid in the health area. However, there is little evidence of the use of VR in preventing oral health. OBJECTIVE To evaluate the effectiveness of VR in oral hygiene education. METHODS Three hundred students, aged 9 to 12 years old received instructions in oral hygiene by immersion in VR and they opined about the performed activies. Chi--square and Fisher's exact tests were applied, with a significance level of 5%. RESULTS The participants' perception of oral hygiene showed no statistically significant difference (p=0.550). There was an increase in the use of dental floss (p= CONCLUSIONS The use of VR in oral hygiene instructions was effective. Most participants increased the frequency of tooth and tonghe brushing, of the use of dental floss, and made drawings related to oral hygiene.

Made available in DSpace on 2021-06-25T11:06:20Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-05-01 Objectives The aim of this study was to evaluate the frequency of foramen cecum and dens in dente, and to verify the association of these structures in the maxillary lateral incisor (MLI). Materials and Methods The presence of foramen cecum in the lingual surface of 110 MLI was verified, and the teeth were radiographed to observe the presence of dens in dente, being classified according to the literature. An association study between the presence of foramen cecum and dens in dente was performed using the Cramer's V and chi-square statistical tests. Results The association was statistically significant between the foramen cecum and the dens in dente. Concomitant presence was observed in 17.27%, being a high rate when compared with the presence of foramen cecum alone (9.09%) or dens in dente alone (8.18%). In addition, type I (minimal invagination, confined to the crown of the tooth and not extending beyond the level of the cementum-enamel junction) was the most frequent (82.14%). Conclusions We emphasize the importance of alerting the dentist to the presence of a foramen cecum on the lingual surface of the MLI, as it is likely that dens in dente is usually of type I. Thus, the foramen cecum is a sign that can assist the dental surgeon in the discovery of dens in dente and clinical conduct to be taken. Department of Morphology Genetics Orthodontic and Pediatric Dentistry School of Dentistry São Paulo State University (UNESP), Rua Humaitá, 1680 Department of Diagnosis and Surgery School of Dentistry São Paulo State University Department of Morphology Genetics Orthodontic and Pediatric Dentistry School of Dentistry São Paulo State University (UNESP), Rua Humaitá, 1680 Department of Diagnosis and Surgery School of Dentistry São Paulo State University

Made available in DSpace on 2020-12-12T02:15:54Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-07-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Resin-modified glass ionomer cement (RMGIC) has important properties. However, like other restorative materials, it has limitations such as decreased biocompatibility. The incorporation of nanoparticles (NP) in the RMGIC resulted in improvements in some of its properties. The aim of this study was to evaluate the physical-biological properties of RMGIC with the addition of nanohydroxyapatite (HANP). Material and Methods: Vitremer RMGIC was used, incorporating HANP by amalgamator, vortex and manual techniques, totaling ten experimental groups. The distribution and dispersion of the HANP were evaluated qualitatively by field emission scanning electron microscope (SEM-FEG). The evaluation of image porosity (SEM-FEG) with the help of imageJ. Cell viability 3-(4,5-dimethylthiazol-2yl)-2,5-diphenyl tetrazoline bromide (MTT) and cell morphology analyses were performed on MDPC-23 odontoblastoid cells at 24 and 72 h. Results: It was possible to observe good dispersion and distribution of HANP in the samples in all experimental groups. The incorporation of 5% HANP into the vortex stirred RMGIC resulted in fewer pores. The increase in the concentration of HANP was directly proportional to the decrease in cytotoxicity. Conclusions: It is concluded that the use of a vortex with the incorporation of 5% HANP is the most appropriate mixing technique when considering the smallest number of pores inside the material. A higher concentration of HANP resulted in better cell viability, suggesting that this association is promising for future studies of new restorative materials. Department of Morphology Genetics Orthodontic and Pediatric Dentistry Araraquara School of Dentistry São Paulo State University (UNESP) Department of Morphology Genetics Orthodontic and Pediatric Dentistry Araraquara School of Dentistry São Paulo State University (UNESP) FAPESP: 2018/02010-7 FAPESP: 2020/06919-0

Virtual reality (VR) allows its application in different fields, such as healthcare. In dentistry, this technology has enormous potential, in the educational and clinical scope. Its applications are of increasing interest and importance in dentistry, especially in teaching, as it offers interactivity and high effectiveness in learning. In the treatment of phobia to dental treatments, this technology is also promising, since it shows satisfactory results and in the surgical area it has a high potential for complex treatments, allowing predictable and safe results. However, future studies should focus on establishing technological standards with high data quality and on the development of approved applications for the clinical routine. Thus, the objective of this literature review was to provide clarification on the knowledge and scientific development of VR in dentistry. La realidad virtual (RV) permite su aplicación en diferentes campos, como la asistencia sanitaria. En odontología, esta tecnología tiene un enorme potencial, en el ámbito educativo y clínico. Sus aplicaciones son de creciente interés e importancia en odontología, especialmente en la enseñanza, ya que ofrece interactividad y alta efectividad en el aprendizaje. En el tratamiento de la fobia a los tratamientos dentales, esta tecnología también es prometedora, ya que muestra resultados satisfactorios y en el área quirúrgica tiene un alto potencial para tratamientos complejos, permitiendo resultados predecibles y seguros. Sin embargo, los estudios futuros deberían centrarse en establecer estándares tecnológicos con alta calidad de datos y en el desarrollo de aplicaciones aprobadas para la rutina clínica. Por lo tanto, el objetivo de esta revisión de la literatura fue proporcionar aclaraciones sobre el conocimiento y el desarrollo científico de la RV en odontología.

The aim of this study were characterize acellular collagen matrices derived from porcine pericardium (PP) and to evaluate their properties after sterilization by ethylene oxide and gamma ray. PP matrices were subjected to alkaline hydrolysis (AH), and samples were characterized for biological stability, membrane thickness measurements, differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). Subsequently, the matrices were frozen, lyophilized and sterilized by ethylene oxide or gamma radiation. For in vitro assays, CHO-K1 cell culture was used and evaluated for cytotoxicity, clonogenic survival assay, genotoxicity and mutagenicity. Analysis of variance (ANOVA) was used, followed by Dunnett’s post-test, with a significance level of 5%. After AH, there was no significant change in matrix thickness. The relative biodegradability of the material after implantation was observed. Morphology and dimensions had small changes after AH. As for cell viability, none of the tested matrices showed a statistically significant difference (p &gt, 0.05, Dunnett) regardless of the sterilization method. Furthermore, it was found that PP matrices did not interfere with the proliferation capacity of CHO-K1 cells (p &gt, Dunnett). As for genotoxicity, when sterilized with ethylene oxide (NP, P12 and P24), it showed genotoxic potential, but it was not genotoxic when sterilized by gamma radiation. No mutagenic effects were observed in either group. PP-derived collagen matrices hydrolyzed at different times were not cytotoxic. It is concluded that the best method of sterilization is through gamma radiation, since no significant changes were observed in the properties of the PP matrices.