Influence of the Salivary Acquired Pellicle on the Inhibition/Progression of In Vitro Carious Dentin Treated with Silver Diamine Fluoride.

Purpose: To evaluate, in vitro, whether the presence of the acquired pellicle (AP) interferes with the effect of 38 percent silver diamine fluoride (SDF) on the inhibition or progression of carious dentin. Methods: Carious dentin specimens were divided into groups: C-no treatment control; FV-fluoride varnish; AP-acquired pellicle formation; SDF only, and APSDF-SDF plus acquired pellicle formation. After AP formation (AP and APSDF groups), all groups were subjected to pH cycling. Dentin mineral gain or loss was quantified using surface microhardness (SM). Concentrations of fluoride calcium (CaF2) and fluorapatite (FAp) fluoride retained in dentin and fluoride concentrations in de- and remineralizing solutions were determined. Results: Groups AP, FV, SDF, and APSDF showed reduced demineralization compared with the C group, but the AP group showed greater surface loss than the fluoridated groups. Groups FV, SDF, and APSDF showed greater mineral recovery than C and AP groups (P<0.05), but no differences were observed between the FV, SDF, and APSDF groups (P>0.05). The retained CaF2 and FAp were greater in the groups treated with fluoride, but there was no difference between the SDF and APSDF groups. Conclusion: The presence of the acquired pellicle reduced the progression of carious dentin lesion but did not influence its remineralization when associated with silver diamine fluoride.

Avaliação do conhecimento das famílias sobre a higienização bucal e o uso domiciliar de fluoretos em crianças de uma faculdade particular do Espírito Santo / Evaluation of household knowledge about oral hygiene and home use of fluoride in children of a Private College in Espírito Santo

Introdução: cárie dentária é um problema de saúde pública e compromete a qualidade de vida dos indivíduos. O uso de dentifrícios fluoretados associado à escovação mecânica vem sendo bastante estudado como controle da doença. Objetivo: avaliar o conhecimento dos pais e/ou responsáveis por crianças frequentadoras da Clínica Odontológica da Faculdade Faesa (ES), sobre a higienização bucal e o uso de dentifrício fluoretado. Métodos: foram analisados 46 questionários, contendo 12 questões objetivas. Resultados: a análise estatística descritiva dos dados demonstrou que 78,3% das crianças utilizavam dentifrício fluoretado, 93,5% dos pais não sabiam a concentração de fluoreto presente no creme dental das crianças, desconheciam o momento para se introduzir o dentifrício fluoretado; 60,9% dos pais não sabiam o que poderia ocorrer a partir da ingestão do dentifrício fluoretado e 71,4% responderam que a função do fluoreto era prevenir a cárie. Para 50,0% das famílias, a introdução do creme dental fluoretado foi apenas a partir do segundo ano de vida e apenas 4,4% sabiam que as lesões de cárie se iniciam pela presença de uma mancha branca. Conclusão: pais e/ou responsáveis possuem conhecimento sobre a função do fluoreto, a quantidade de dentifrício que deve ser utilizada em cada faixa etária; porém, desconhecem a concentração de fluoreto presente no creme dental, não sabem o momento correto para introduzir o dentifrício fluoretado ou os riscos de desenvolvimento de fluorose dentária.

Introduction: Caries is considered a public health problem that compromise individual's quality of life. The use of fluoridated dentifrices together with mechanical brushing have been widely studied as a control of the disease. This research evaluated the level of knowledge of parents and/or guardians of children attending the Dental Clinic of Faesa College (Vitória, ES), regarding information about dental hygiene, use of toothpaste. Methods: We analyzed 46 questionnaires, containing 12 objective questions. Results: The descriptive statistical analysis showed that 78.3% of the children used fluoride dentifrice, 93.5% of the parents did not know the fluoride concentration present in the children's toothpaste, they did not know when to introduce the fluoride dentifrice, 60.9% of the parents did not know what could occur from the ingestion of the fluoride dentifrice and 71.4% answered that fluoride function was to prevent caries. For 50.0% of the families, the introduction of the fluoride toothpaste was only from the second year of life and only 4.4% knew that the caries lesions are initiated by the presence of a white spot. Conclusion: Parents and/or caregivers have knowledge about the function of fluoride, the amount of toothpaste that should be used in each age group; however, are unaware of the fluoride concentration present in the toothpaste, do not know the correct time to introduce the fluoride dentifrice or the risks of developing dental fluorosis.