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Aim: This study aimed to evaluate trends in the prevalence of dental caries in preschool children and associated factors considering different time variations. Methods: This is a time seriesstudy performed using data from three cross-sectional studies with pre-school children from southern Brazil in 2008, 2013 and 2019. Dental caries was evaluated by decayed, missing and filled deciduous teeth (dmft index). Demographic, socioeconomic, behavioural and psychosocial variables were also collected. Chi-square test for trends and a hierarchical age-period-cohort (HAPC) analysis using multilevel Poisson regression model for testing the associations between predictor variables and dental caries experience were used. Results: A total of 1,644 pre-school children participated in all surveys. There was a significant difference in caries experience considering all APC effects. The prevalence of dental caries was 25.0% in 2008, 16.3% in 2013, and 19.4% in 2019 and no statistical difference was observed. An age effect showed that older children were more likely to experience dental caries. Considering the cohort effect, there is a significant difference between the generations, mainly between 2003 and 2018. Household income, use of dental services, and parent’s perception of child oral health were associated with dental caries experience no matter the time variation. Conclusion: Despite recent declines in dental caries prevalence among preschool children, caries levels increased with age and social inequalities persisted through the years, indicating a need of reviewing the policies to reduce the burden of this oral disease. Clinical relevance: Our findings reinforce that the common risk factors still represent the best predictor for dental caries trends.

Background The impact of the COVID‐19 pandemic on behavioural and psychosocial aspects related to oral health is unknown. Aim This study evaluated the psychosocial and behavioural changes related to oral health in adolescents immediately before and during the pandemic period of COVID‐19, enabling a longitudinal assessment of the perceived changes. Design This cohort study evaluated 290 adolescents from November 2019 to February 2020 (T1—before the pandemic in Brazil) and from June to July 2020 (T2) in southern Brazil. Sociodemographic, behavioural, and psychosocial variables were measured before and during the pandemic. Issues related to social distancing and job loss were also collected. The differences between the variables in T1 and T2, as well as the effect of social distancing, were assessed using a multilevel‐adjusted logistic regression model for repeated measures. Results A total of 207 adolescents were re‐evaluated at T2 (a response rate of 71.3%). During the pandemic, the frequency of toothbrushing, the use of dental services, and the self‐perceived need for dental treatment significantly decreased. Sugar consumption, bruxism, and quality of sleep did not change significantly. Conclusion Behavioural and psychosocial factors showed significant changes due to the COVID‐19 pandemic in adolescents.

Oral health behaviour is a learning process that begins in the early years of an individual's life. The aim of this study was to evaluate the associations between demographic, socioeconomic, and psychosocial factors and oral health behaviours during the transition period from childhood to adolescence.This was a cohort study with a follow-up of 7 years. The baseline assessment occurred in 2010 with a random sample of 639 preschool children from southern Brazil. Demographic, socioeconomic and psychosocial oral health conditions were assessed at baseline. Oral health habit variables were collected at follow-up and included questions regarding dental care and oral hygiene behaviours. Structural equation modelling was performed to assess the direct and indirect relationships between predictors at baseline in oral health behaviours at follow-up.A total of 449 children were re-examined at follow-up (70.3% cohort retention rate). Factors directly related to poorer oral health behaviours (lower use of dental services, dental visits for emergency reasons and lower frequency of toothbrushing) were lower household income, lower maternal education, lower frequency of visits to neighbours or friends, and male sex. Considering indirect pathways, the household income and maternal education at baseline influenced oral health behaviours at follow-up via visits to neighbours or friends.Our findings suggest that household income, maternal education and social capital play an important role in the development of oral health behaviours during the transition from childhood to adolescence. Acquisition of healthy oral behaviours is an important factor to consider in childhood. With this knowledge, public health policies can be developed to intervene in specific causal factors and improve oral health during this transitional period.

Background Dentofacial features are related to increased bullying episodes in young people. The aim of this study was to assess the association between gingival bleeding and reports of verbal bullying among adolescents. Methods This is a cross-sectional study conducted with a representative sample of 608 12-year-old adolescents from southern Brazil. The occurrence of verbal bullying was verified through adolescents' self-report. Oral health measurements included the presence of gingival bleeding, dental fracture, dental fluorosis, and dental caries experience. Gingival bleeding was assessed through adolescent self-perception by the following question: "Did you notice any bleeding in your gums?" Demographic, socioeconomic, and psychosocial variables were also evaluated. Poisson regression models with robust variance were used to evaluate the influence of gingival bleeding on the occurrence of verbal bullying. Results are presented as prevalence ratio (PR) and 95% confidence interval (95% CI). Results Out of 608 adolescents evaluated, 577 answered bullying questions. The prevalence of self-reported verbal bullying was 12.8%. Adolescents who presented gingival bleeding had an 80% higher prevalence of verbal bullying than their counterparts (PR 1.80; 95% CI 1.01 -3.19). Dental shame, speech difficulties and influence of dental condition on studies also impacted the higher prevalence of bullying. Conclusion Our results suggest that the presence of gingival bleeding negatively impacts the social life of adolescents, causing more episodes of verbal bullying. These findings encourage public health policies aimed at reducing oral health inequities, thus reflecting on the well-being and quality of life of this target population.

This study evaluated the influence of Oral Health-Related Quality of Life (OHRQoL) on the consumption of alcohol and cigarette use in adolescents. This prospective cohort began in 2012 (T1) with an initial random sample of 1134 12-year-old adolescents followed for 6 years in Santa Maria, southern Brazil. The present study comprised data from the two cohort reassessments that took place in 2014 (T2) and 2018 (T3). OHRQoL was measured with the Brazilian short version of the Child Perceptions Questionnaire (CPQ11-14) at T2. Socioeconomic, demographic, and oral health measures were also collected during this period. Alcohol and cigarette consumption (regular use) in the past 30 days was evaluated at T3 through questions in the of the National School Health Survey (PeNSE) questionnaire. A multilevel Poisson regression model was used to evaluate the influence of predictor variables on substance use. Of the 770 adolescents at T2, 575 and 576 adolescents were reassessed at T3 for alcohol and cigarette consumption, respectively. Adolescents with higher overall CPQ11-14 scores were at higher risk for regular consumption of alcohol (IRR 1.01; 95% CI 1.01-1.02) and cigarette (IRR 1.04; 95% CI 1.03-1.05). Non-white adolescents with low socioeconomic status, untreated dental caries, and who had not been to the dentist (last 6 months) were also associated with increased regular consumption of licit substances. Adolescents with worse OHRQoL presented a higher consumption of alcohol and cigarette. These findings are useful for planning public health strategies to improve adolescent OHRQoL and reduce the harmful substance use.

To evaluate the impact of community and individual social capital during early childhood on oral health-related quality of life (OHRQoL) over a 10-year follow-up period.A prospective cohort study was conducted in the southern Brazil. Baseline (T1) data collection occurred in 2010 with preschool children aged 1-5 years. Participants were assessed in 2012 (T2), 2017 (T3), and 2020 (T4). OHRQoL was assessed using the B-ECOHIS at T1 and T2 and through CPQ8-10 at T3 and CPQ11-14 at T4. Community social capital was evaluated through the presence of formal institutions in the neighbourhood and individual social capital by social networks, both at T1. Demographic and socioeconomic characteristics were also evaluated. Multilevel Poisson regression analysis was performed to estimate the impact of social capital measures on OHRQoL.Of the 639 children assessed at T1, 469 were followed at T2 (73.3% response rate), 449 at T3 (70.3% response rate), and 429 at T4 (67.1% response rate). Individuals living in neighbourhoods with the presence of social class associations at T1 had higher OHRQoL at T3 and T4. Individuals whose families visit friends and neighbours less than once a month or never at T1 had lower OHRQoL at T1, T3 and T4. Attending religious meetings less than once a month or never at T1 was associated with lower OHRQoL at T2 and T4.Social capital at the community level had a long-term effect on OHRQoL, especially during adolescence, while individual social capital levels impacted OHRQoL across the assessments.The findings indicate that psychosocial variables can impact OHRQoL, a fundamental aspect of clinical practice.

This study aimed to evaluate the influence of the number of dentists in the neighborhood on the incidence of dental caries in the children permanent dentition. This cohort began in 2010 (T1) with a random sample of 639 children (1 to 5 years-old) followed for 7 years, in southern Brazil. The follow-up reassessment (T2) took place in 2017. Untreated dental caries was evaluated at T2 through the Decayed, Missing, and Filled surfaces index (DMF-S). The number of dentists in the neighborhood was obtained from the city’s official database and used as a contextual variable. Socioeconomic, demographic, and oral health variables at the individual level were evaluated at T1. A multilevel Poisson regression was performed to evaluate the influence of the predictor variables in the incidence of untreated dental caries. From 639 children at T1, 449 were reassessed at T2 (a 70.3% retention rate). The mean of decayed surfaces at T2 was 0.92 (SE 0.01). The greater the number of dentists in the neighborhoods where the children lived, the lower the incidence of dental caries. Children with low socioeconomic status, who have not routinely visited the dentist in the last 6 months, who presented a experience of dental caries, and whose parents perceived their oral health as fair/poor showed a higher incidence of surfaces with untreated dental caries. As conclusion, children who live in neighborhoods with fewer dentists have a higher incidence of untreated dental caries in permanent dentition. Resumo Este estudo teve como objetivo avaliar a influência do número de cirurgiões-dentistas do bairro na incidência de cárie dentária na dentição permanente. Esta coorte teve início em 2010 (T1) com uma amostra aleatória de 639 crianças (1 a 5 anos) acompanhadas por 7 anos, no sul do Brasil. A reavaliação (T2) ocorreu em 2017. A cárie dentária não tratada foi avaliada no T2 por meio do índice de superfícies cariadas, perdidas e obturadas (CPO-S). O número de dentistas do bairro foi obtido no banco de dados oficial da cidade e usada como uma variável contextual. Variáveis socioeconômicas, demográficas e de saúde bucal no nível individual foram avaliadas no T1. Foi realizada uma análise de regressão de Poisson multinível para avaliar a influência das variáveis preditoras na incidência de cárie dentária não tratada. Das 639 crianças no T1, 449 foram reavaliadas no T2 (taxa de retenção de 70,3%). A média das superfícies cariadas no T2 foi de 0,92 (EP 0,01). Quanto maior o número de dentistas nos bairros em que as crianças residiam, menor era a incidência de cárie dentária. Crianças com baixo nível socioeconômico, que não consultaram rotineiramente o dentista nos últimos 6 meses, que apresentaram experiência de cárie dentária e cujos pais perceberam sua saúde bucal como regular/ruim apresentaram maior incidência de superfícies com cárie dentária não tratada. Como conclusão, crianças que moram em bairros com menos dentistas têm maior incidência de cárie não tratada na dentição permanente.

O grupo PIBID Matemática do IFC - Campus Camboriú, visando o melhoraproveitamento desta experiência de iniciação à docência, expandiu suaatuação para além do projeto institucional do Instituto Federal Catarinense. Emuma parceria com a Escola de Educação Básica Professor José Arantes está,com os alunos desta, realizando oficinas de matemática, com regularidadesemanal. Neste texto apresentamos uma reflexão sobre o desenvolvimentodestas atividades e resultados obtidos até este momento.

O presente trabalho apresenta uma proposta de oficina para o ensino de frações,utilizando tecnologias digitais e jogos. A aplicação desta oficina ocorreu em umatarde, totalizando uma hora de atividade, com 13 alunos do ensino médio do IFC -Campus Camboriú. Esta experiência didática buscou promover um aprendizadolúdico sem aplicação de fórmulas. Os resultados obtidos comprovam que estaabordagem tem potencial para promover o aprendizado de alunos dentro de seusvariados níveis de conhecimento.

The objective of the study is to assess the effect of dental treatment on the oral health-related quality of life (OHRQoL) of adolescents from a city in South Brazil. This longitudinal study included 129 adolescents aged 10 to 15 years who received dental caries treatment in a university clinic in Santa Maria, Brazil. The OHRQoL was measured using the Brazilian version of the Child Perceptions Questionnaire for children aged 11 to 14 years (CPQ11–14). The questionnaire was administered through face-to-face interviews before treatment and 1 month after its completion. Paired t tests and effect sizes were used to evaluate changes in CPQ11–14 scores after completion of treatment. In total, 43.4% of the study participants received solely restorations, 15.5% received endodontic treatment, and 44.2% underwent tooth extractions. The mean CPQ11–14 score before treatment was 15.9 ± 10.3, which decreased to 6.3 ± 6.5 after treatment (P