RESUMEN

The aims of this study were (1) to assess the amount of fluoride (F) released from varnishes containing calcium glycerophosphate (CaGP) and (2) to assess the effect of the experimental varnishes on in vitro demineralization. Six test groups using 5 varnishes: base varnish (no active ingredients); Duraphat® (2.26% NaF); Duofluorid® (5.63% NaF/CaF2); experimental varnish 1 (1% CaGP/5.63% NaF/CaF2); experimental varnish 2 (5% CaGP/5.63% NaF/CaF2); and no varnish were set up. In stage 1, 60 acrylic blocks were randomly distributed into 6 groups (n = 10). Then 300 µg of each varnish was applied to each block. The blocks were immersed in deionized water, which was changed after 1, 8, 12, 24, 48 and 72 hours. Fluoride concentration in the water was analyzed using a fluoride electrode. In stage 2, 60 bovine enamel samples were distributed into 6 groups (n = 10), and treated with 300 µg of the respective varnish. After 6 h the varnish was removed and the samples were subjected to a 7-day in vitro pH cycle (6 h demineralization/18 h remineralization per day). The demineralization was measured using surface hardness. The results showed that both experimental varnishes released more fluoride than Duofluorid® and Duraphat® (p < 0.05), but Duraphat® showed the best preventive effect by decreasing enamel hardness loss (p < 0.05). Therefore, we conclude that even though (1) the experimental varnishes containing CaGP released greater amounts of F, (2) they did not increase in the preventive effect against enamel demineralization.

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RESUMEN

The aims of this study were (1) to assess the amount of fluoride (F) released from varnishes containing calcium glycerophosphate (CaGP) and (2) to assess the effect of the experimental varnishes on in vitrodemineralization. Six test groups using 5 varnishes: base varnish (no active ingredients); Duraphat® (2.26% NaF); Duofluorid® (5.63% NaF/CaF2); experimental varnish 1 (1% CaGP/5.63% NaF/CaF2); experimental varnish 2 (5% CaGP/5.63% NaF/CaF2); and no varnish were set up. In stage 1, 60 acrylic blocks were randomly distributed into 6 groups (n = 10). Then 300 µg of each varnish was applied to each block. The blocks were immersed in deionized water, which was changed after 1, 8, 12, 24, 48 and 72 hours. Fluoride concentration in the water was analyzed using a fluoride electrode. In stage 2, 60 bovine enamel samples were distributed into 6 groups (n = 10), and treated with 300 µg of the respective varnish. After 6 h the varnish was removed and the samples were subjected to a 7-day in vitro pH cycle (6 h demineralization/18 h remineralization per day). The demineralization was measured using surface hardness. The results showed that both experimental varnishes released more fluoride than Duofluorid® and Duraphat® (p < 0.05), but Duraphat® showed the best preventive effect by decreasing enamel hardness loss (p < 0.05). Therefore, we conclude that even though (1) the experimental varnishes containing CaGP released greater amounts of F, (2) they did not increase in the preventive effect against enamel demineralization.

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RESUMEN

Objetivos: Avaliar a concordância entre os relatos de pai, mãe e filhos em relação a qualidade de vida relacionada a saúde bucal (OVRSB) da criança. Métodos: Um total de 80 tríades pai-mãe-criança responderam a versão brasileira do Scale of Oral Health Outcomes for 5-year-old children (SOHO-5) validado para crianças de 5 e 6 anos de idade e seus respectivos pais O preenchimento do SOHO-5 foi realizado por meio de entrevistas independentes face-a-face. A concordância entre os escores totais e de itens foi avaliada usando a comparação de médias e a análise de correlação calculada pelo coeficiente de correlaçâo intraclasse (CCI). Resultados: Houve diferença significativa entre as médias dos relatos pai-criança nos escores totais (p<0.001) e itens relacionados a não sorrir devido à dor e à aparência (p<0,01). O CCI para o escore total dos relatos mãe-criança foi de 0,83 (IC 95% 0,74- 0,89) e de 0,41 (IC 95% 0,09- 0,63) para os relatos pai-criança, indicando uma concordância excelente e moderada, respectivamente. Conclusões: As mães relatam a QVRSB de seus filhos de forma semelhante às crianças enquanto que os pais subestimam os impactos. As mães podem ser consideradas respondentes secundárias preferíveis aos pais.

Objective: To assess the agreement between father, mother and children regarding child'l oral health-related quality of life (OHROoL). Methods: A total of 80 mother-father-child triads answered the Brazilian version of the Scale of Oral Health Outcomes for 5-year-old children (SOHO-51, validated for children aged 5-6 years and their parents. The SOHO-5 was completed through face-to-face independent interviews. Agreement between total and items scores was assessed using mean comparisons and correlation analyses by computing the Intraclass Correlation Coefficient (ICC). Results: There were significant differences between the mean total scores for father-child pairs (p<0.001) and items related to avoid smiling due to pain and avoid smiling due to appearance (p<0,01). The ICC for total score was 0.83 (CI 95% 0.74; 0.89) for mother-child pairs and 0.41 (CI 95% 0.09; 0.63) for father-child pairs indicating an excellent and moderate agreement, respectively. Conclusions: Mothers do rate their children's OHRQol similarly to children's self-reports, while fathers underreport the impact. Mothers may be considered preferable proxies than fathers.

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