Commercial Silver Diamine Fluoride (SDF) Products on Caries Lesion Progression in Primary Enamel: An In Vitro Study.

Purpose: Evidence has shown that silver diamine fluoride (SDF) at 30-38% has the potential to control and revert caries lesions. However, SDF can be found at lower concentrations on the market. In this study, we evaluated the effect of different commercially available SDF products on the progression of non-cavitated caries lesion in primary teeth assessed by a pH-cycling model. Materials and Methods: Subsuperficial caries lesions were formed in primary teeth using a demineralising solution for 96 h. Demineralised samples were randomly allocated to the following groups (n = 12/group): (G1) Negative Control, deionised water; (G2) Cariostatic, Inodon; 10%* SDF; (G3) Cariestop, Biodynamics, 12%* SDF; (G4) Cariostal, Iodontec, 16%* SDF; (G5) Cariestop, Biodynamics, 30%* SDF (*concentrations declared in the label). Products were applied according to the manufacturer's recommendation and reapplied after 7 days. Samples were exposed to a pH-cycling model for 14 days. After the cycle was completed, samples were sectioned, analysed by polarised light microscopy, and lesion depth was estimated as indicator of caries lesion progression. Groups were compared by multiple comparisons test (p < 0.05). Results: The negative control group exhibited the greatest lesion depth. All SDF products reduced the caries lesions depth and differed from the negative control. It was a trend observed (G1>G2>G3>G4), but no statistical differences among G3, and G5, and between G4 and G5 were observed for lesion depth. Conclusion: The tested SDF products reduced the depth of non-cavitated carious lesions in primary enamel. Although SDF products with declared concentrations between 12% and 30% (G3, G4, and G5) demonstrated a similar lesion depth in primary enamel, the effect of the concentration remains unclear.

Contextual and Individual Determinants of Root Caries in Older People.

The aim of this study was to identify the association of the presence of root caries in older people with contextual and individual determinants using a multilevel model. Data from the National Survey of Oral Health collected in Brazil were used. A sample of older Brazilians (aged 65-74 years) was included and selected through multistage probability cluster sampling, using probability proportional to size. Contextual variables of municipalities and individual variables of older people were included. Descriptive, bivariate, and multilevel analyses were conducted. Of the 3,926 older people included in the study, 934 (21.8%) had at least 1 tooth with root caries. There seemed to be no pattern of involvement between the anterior and posterior teeth in the dental arches. Multilevel analysis showed a higher presence of root caries among older people resident in municipalities that were noncapital cities (OR = 1.50), who were over 70 years of age (odds ratio, OR = 1.22), had nonwhite skin color (OR 1.35), had coronal caries (OR = 5.58), were dissatisfied with their teeth and mouth (OR = 1.47), and had self-perceived dental treatment needs (OR = 1.33). Contextual and individual determinants were associated with the occurrence of root caries in older people. Lesion presence demonstrated a profile of social inequality.

Efeito do stress no grau de inflamação gengival em adolescentes grávidas: estudo piloto / Effect of stress on the degree ofgingival inflammation in pregnant adolescents: pilot study

Objetivo: Avaliar a severidade de inflamação gengival perante duas condições, estresse e gravidez, em um grupo de adolescentes atendidas no serviço público de saúde na cidade de Maceió-AL. Material e métodos: 80 adolescentes grávidas com faixa etária ente 14 e 19 anos, atendidas em centros de referência ao atendimento pré-natal na cidade de Maceió-AL, participaram desse estudo piloto. O estresse social foi avaliado subjetivamente pelo teste de avaliação de estresse e a inflamação gengival foi avaliada pelo índice de inflamação gengival através de um exame clínico utilizando-se 6 dentes índices. A análise estatística foi executada relacionando o estresse social com dados demográficos e de hábitos de higiene oral e com relação a inflamação gengival pelo teste de Mann-Whitney e pelo teste de Fischer para variáveis dicotômicas. Resultados: Na avaliação da relação do estresse com a inflamação gengival e com o índice de placa com controle das variáveis independentes foi utilizada a regressão logística multivariada. Todos os testes foram aplicados com nível de confiança de 95%. O teste de Mann-Whitney demonstrou que as grávidas estressadas apresentavam maior frequência de escovação que as grávidas sem stress (p=0.008). Os outros dados demográficos e de hábitos de higiene oral se distribuíram igualmente entre os grupos. A análise por regressão logística multivariada demonstrou que nenhuma das variáveis independentes influenciou no índice gengival e no índice de placa em mulheres grávidas com ou sem stress. Conclusão: O estresse não causou aumento da severidade da inflamação gengival em adolescentes grávidas.

Objective: Evaluate the severity of gingival inflammation against two conditions, stress and pregnancy, in a group of adolescents treated at a public health service in Maceió-AL. Material and methods: 80 pregnant adolescents aged between 14 to 19 years being treated at referral centers for prenatal care in the city of Maceió-AL, participated in this pilot study. The social stress was subjectively evaluated by assessment of stress test (Lipp test) and gingival inflammation was assessed by the index of gingival inflammation (Loe & Silness) through a clinical examination using six index teeth. Statistical analysis was performed relating the social stress with demographic data and habits regarding oral hygiene and gingival inflammation using the Mann-Whitney and Fischer's test for dichotomous variables. Results: When considering the influence of the stress in gingival inflammation and plaque index with controlled of theindependent variables the multivariate logistic regression was used. All tests were applied with a confidence level of 95%. The Mann-Whitney test demonstrated that pregnant women under stress showed higher frequency of brushing than pregnant women without stress (p = 0.008). The other demographic and oral hygiene habits were equally distributed between the groups. A multivariate logistic regression analysis showed that none of the independent variables influenced the gingival index and plaque index in pregnant women with or without stress. Conclusion:The stress did not increase the severity of gingival inflammation in pregnant adolescents.