Objective: The objective of this study was to assess the number of dental procedures performed in the Brazilian Public Health System (SUS) during the first wave of COVID-19 in Brazil (1 st semester of 2020) and compare it with the same period of 2019. Methods: A retrospective study was conducted based on the SUS Dataset (DATASUS). Descriptive analysis of the number of dental procedures and socio-demographic regions was presented and the number of dental procedures during the first semester of 2020 was compared to 2019, using Wilcoxon Signed Rank Test (α=0.05). The number of COVID-19 confirmed cases and deaths were also retrieved from DATASUS. Results: Dental procedures decreased from 47 million in the first semester of 2019 to 15 million in 2020, representing an overall decrease of about 66%. Statistically significant differences were observed for the numbers of procedures regarding preventive actions related to oral health (-84.53%; p <0.001), primary care (-60.69%; p <0.001), endodontic specialized care (-52.50%; p <0.001), and periodontal and oral surgery specialized care (-54.57%; p <0.001). Conclusion: The COVID-19 pandemic also reduced by half the number of oral health procedures provided by the SUS in almost all Brazilian states regardless of whether these states had a large number of confirmed cases or deaths. Future policies are recommended in order to reduce the negative impact of the suspension of dental services on the oral health of the population.

IntroduçãoA obesidade caracteriza-se por danos à condição de saúde causados pelo acúmulo excessivo ou anormal de gordura corpórea 1 . Essa doença não pode ser considerada como uma simples desordem, mas sim, um grupo heterogêneo de condições com múltiplas e complexas causas. O peso corporal é, então, determinado pela interação entre fatores biológicos, ambientais, sociais e comportamentais, agindo na regulação entre o armazenamento e o gasto energético. Diversas são as causas atribuídas à etiologia da obesidade, destacando fatores psicossociais, comportamentais e biológicos. Embora o componente genético tenha um papel inquestionável na etiologia da obesidade, o notável aumento na prevalên-cia dessa condição pode ser mais bem explicado por mudanças sociais e comportamentais, resultados da transição sociodemográfica.A epidemia da obesidade era uma realidade predominante dos países ricos e desenvolvidos 2 . Ao passo que países de baixa e de média renda começam a se tornar mais globalizados, há uma mudança considerável no padrão nutricional, e nos hábi-tos de vida, acarretando, consequentemente, uma significante elevação da prevalência dessa doença. Assim, após a década de 1990, a obesidade assume

This in vitro study evaluated the influence of feldspathic ceramic thickness on the properties of light‐ and dual‐cured resin cements. For each cement (RelyX Veneer, Allcem Veneer, RelyX Ultimate, and Allcem Dual), three ceramic specimens were prepared, with seven thicknesses for each (0.5, 1.0, 1.5, 2.0, 2.5, 3.0, and 3.5 mm). The degree of conversion, Vickers microhardness, irradiance power, color variation (ΔE00), and translucency parameters were assessed. Microhardness and irradiance power were analyzed using analysis of variance (ANOVA) with post hoc Tukey's test, while ΔE00, translucency parameters, and degree of conversion were analyzed using ANOVA of ranks with post hoc Duncan's Multiple Range Test. The relationship between each of the dependent variables (degree of conversion, ΔE00, and translucency parameter tests) and the specimen thickness was described using linear regression for each of the four resin cements. The significance level for all analyses was set at 5%. RelyX Ultimate yielded the lowest degree of conversion values among all resin cements. Allcem Veneer produced the lowest microhardness values, without statistical differences between thicknesses, of up to 1 mm. Allcem Dual produced the highest ΔE00 and translucency parameter values. Feldspathic ceramic thickness influenced the mechanical properties of resin cements and optical aspects of the restorative set.

Aim: This retrospective study aims to describe and analyze the number of dental implants and implant-retained prostheses performed by the Unified Health System (SUS) in the last decade. Methods: This study is based on secondary data from the official government database (DATASUS) performed from January 2010 to December 2019 and is reported following the STROBE. A descriptive analysis was performed of the total sample and the stratified sample divided by Brazilian states. Results: A total of 143,037 dental implants and 93,325 implant-retained prostheses were provided by SUS. It is possible to observe that some states played a massive role on the provision of dental implants and implant-retained prostheses (Parana state: 58.4% and 55.9% and Paraiba state: 21.1% and 25.2% of the total amount of dental implants and implant-retained prostheses, respectively) while some states did not provide a single implant-retained prosthesis. Also, inland cities were mostly responsible for the number of procedures compared to the state capitals. Conclusion: Although dental implant therapy is available in SUS across the country, the number of treatments provided in the last decade is still very limited and is also mainly concentrated in the southeastern region of Brazil.

Objective: The aim of this study was evaluate radiographically prevalence of apical periodontitis (AP) in endodontically treated teeth (ETT) and relate with demographic factors, quality of endodontic treatment and coronal restoration. Material and methods: Data were collected from dental records wich contained full-mouth radiographic series. In ETT, arch, dental group and presence of AP were evaluated. Quality of root canal filling, presence and quality of coronal restoration and type of restorative material were also collected. Data were evaluated using descriptive statistics and Chi-square Test. Results: Of 70 patients included in the final sample, the majority were female (54.3%) and age ranged from 13 to 77 years (47.14 ± 13.18). Of 1,333 teeth evaluated, 73 (5.4%) had endodontic treatment, being the majority maxillary (74%) and anterior teeth (52.1%). Of teeth without endodontic treatment, 320 (25.4%) had AP. Failure rate was high (52.8%) and quality of root canal filling and coronal restoration were considered inadequate in majority cases (58.3% and 47.7%, respectively). Dental group had a statistically significant relationship with presence of AP in ETT, being more frequent in anterior teeth (p = 0.019). Conclusion: It was concluded that prevalence of AP in ETT was high and dental group was the factor that most influenced prevalence of AP in ETT.KeywordsApical periodontitis; Radiography; Root canal filling.