This study aimed to evaluate smartphone addiction, sleep quality, quality of life and depression among dental students before and during the first wave COVID-19 pandemic lockdown and explore how smartphone addiction influences the other variables. 57 dental students answered the smartphone addiction inventory, Pittsburg sleep quality index, WHOQOL-bref and research diagnosis criteria for temporomandibular disorders axis II questionnaires before and during lockdown. Statistical analysis was conducted using Wilcoxon test, Mann-Whitney U test, Spearman tests and linear regression models considering the smartphone addiction inventory total score as the independent variable. The high mean scores on smartphone addiction on both times are remarkable. The smartphone addiction prevalence was also high on both times (68.66% and 71.92% respectively). Overall sleep quality improved. However, there was no significant change on overall smartphone addiction, quality of life and depression grade during lockdown. Tolerance using smartphones increased during lockdown, especially for women. Smartphone addiction showed negative correlation to quality of life and positive correlation to depression, subjective sleep quality and sleep medication use. Smartphone addiction was a predictor to total WHOQOL-bref score, all WHOQOL bref domains, sleep medication use and to depression on both times, before and during lockdown. Smartphone addiction was directly affecting quality of life. Despite the growing smartphone use among university students due to the pandemic restrictions, this study showed that the overall smartphone addiction, quality of life and depression grade were not influenced by the lockdown restrictions. However, it was observed an improvement on sleep quality during this period among dental students.

Objective: The objective of our study was to investigate the relationship between social network and social support with early childhood caries in preschool children. Methods: A transversal study with 100 children aging at most 5 years and 11 months was performed. The children underwent a clinical dental evaluation and their parents answered a structured questionnaire. Results: Dental caries was associated with time of bottle feeding (p=0.031) (RP=5.203) and number of dental appointment (p=0,010) (RP=6,293). Moreover, dental caries was also directly associated with the number of siblings living together in the same house (p=0.002) (r=0.372), while inverse correlation was found between dental caries and social support (p=0.028) (r= - 0.219). Conclusion: Preschool children whose supervisors had a better social support presented superior oral health, suggesting that social support from caregivers is associated with improved pediatric oral health.

Para a realização do retratamento endodôntico, a remoção do material obturador geralmente é obtida através da ação mecânica dos instrumentos e química dos solventes. O objetivo deste trabalho foi realizar uma revisão de literatura acerca da eficácia dos solventes utilizados em reintervenções na endodontia. Para tanto, foram pesquisados artigos científicos dos últimos 10 anos em inglês e português nas bases de dados Pubmed, Lilacs e Scielo utilizando as palavras-chave: “retreatment”, “solvents” e “endodontic”. A pesquisa resultou em 32 artigos não duplicados. Após análise dos títulos e resumos 10 foram selecionados. Como critério de inclusão foram considerados estudos clínicos ou laboratoriais utilizando dentes humanos e excluídas revisões de literatura e revisões sistemáticas. Por meio da análise da literatura atual, concluiu-se que é importante a associação da rapidez de atuação e da biocompatibilidade. Contudo, todos os solventes utilizados têm efeitos citotóxicos. O clorofórmio e o xilol exibem uma elevada capacidade de solvência, mas também considerável toxicidade. O óleo da casca de laranja tem sido indicado como o solvente de menor potencial irritativo, mas estudos exibem divergências quanto à capacidade de amolecimento da guta-percha em relação a outras substâncias. A partir do cenário atual, infere-se que ainda são necessários mais estudos em relação aos solventes para que o clínico possa realizar uma escolha mais eficaz e segura para cada caso.Palavras-chave: Endodontia. Retratamento. Solventes.

The aim of this study was to assess the functional capacity of institutionalized older people and to verify which sociodemographic, health factors and oral health were related to the worse ability to perform daily activities. It was a cross-sectional study conducted with 512 institutionalized elderly people. Sociodemographic profile; general health and oral health conditions were evaluated. Functional capacity was assessed by Barthel Index. A high prevalence of functional dependent elderly was found (47.1%). A lower functional capacity was associated with female (p=0.006); higher education (p=0.009); older elderly (p<0.045); decision to institutionalize by others (p=0.011); affected cognitive state (p<0.001); reduced mobility (p<0.001), less autonomy for self-care in oral health and worse oral health. Institutionalized elderly has low functional capacity that is related to several aspects of their lives.