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O efeito de diferentes pastas branqueadoras na superfície de diferentes resinas compostas injetáveis
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Advisor(s)
Abstract(s)
Objetivo: Avaliar a alteração na microdureza de duas resinas compostas injetáveis, promovida pela escovagem bi-diária com duas pastas dentífricas branqueadoras, durante 30 dias.
Materiais e métodos: 60 espécimes de forma cilíndrica (10 mm diâmetro; 2 mm altura) foram divididos em 4 grupos experimentais, combinando as variáveis: resina composta fluida (Aster Flow; GrandioSO Heavy Flow) e pasta dentífrica branqueadora (Sensodyne® Sensibilidade e Gengivas; Sensodyne® Rapid Action). A microdureza de Vickers das resinas compostas injetáveis foi medida às 0 h e após 30 dias de escovagem
bi-diária com uma escova elétrica (Oral-B Smart Teen) com sensor de pressão. Os resultados obtidos do ensaio de microdureza de Vickers foram analisados com o teste de Wilcoxon, seguido do teste de Mann-Whitney para avaliar a influência do tipo de resina e do tipo de pasta nos 2 tempos de medição.
Resultados: Foram verificadas diferenças estatisticamente significativas (p<0.05) entre os dois tempos medidos. Também se verificou diferenças estatisticamente significativas (p<0.05) entre as resinas, tanto às 0 h como após 30 dias. No entanto, não se detetou diferenças estatisticamente significativas (p>0.05) entre as pastas, tanto às 0 h como após 30 dias de escovagem.
Conclusões: A utilização das pastas dentífricas branqueadoras testadas não alterou significativamente a microdureza das resinas compostas injetáveis, num período de 30 dias. Verificou-se que a resina GrandioSO Heavy Flow apresenta uma maior microdureza do que a resina Aster Flow.
Objective: To assess the change in microhardness of two injectable composite resins promoted by twice-daily brushing with two whitening toothpaste varieties over a 30-day period. Materials and Methods: 60 cylindrical specimens (10 mm in diameter; 2 mm in height) were divided into four experimental groups by combining the variables: fluid composite resin (Aster Flow; GrandioSO Heavy Flow) and whitening toothpaste (Sensodyne® Sensitivity and Gum Care; Sensodyne® Rapid Action). The Vickers microhardness of injectable composite resins was measured at 0 hours and after 30 days of twice-daily brushing with an electric toothbrush (Oral-B Smart Teen) equipped with a pressure sensor. The results obtained from the Vickers microhardness test were analyzed using the Wilcoxon test, followed by the Mann-Whitney test to assess the influence of resin type and toothpaste type at the two measurement time points. Results: Statistically significant differences (p<0.05) were observed between the two measured time points. Statistically significant differences (p<0.05) were also observed between the resins, both at 0 hours and after 30 days. However, statistically significant differences (p>0.05) were not detected between the toothpastes, both at 0 hours and after 30 days of brushing. Conclusions: The use of the tested whitening toothpaste did not significantly alter the microhardness of injectable composite resins over a 30-day period. It was found that GrandioSO Heavy Flow resin exhibited higher microhardness compared to Aster Flow resin.
Objective: To assess the change in microhardness of two injectable composite resins promoted by twice-daily brushing with two whitening toothpaste varieties over a 30-day period. Materials and Methods: 60 cylindrical specimens (10 mm in diameter; 2 mm in height) were divided into four experimental groups by combining the variables: fluid composite resin (Aster Flow; GrandioSO Heavy Flow) and whitening toothpaste (Sensodyne® Sensitivity and Gum Care; Sensodyne® Rapid Action). The Vickers microhardness of injectable composite resins was measured at 0 hours and after 30 days of twice-daily brushing with an electric toothbrush (Oral-B Smart Teen) equipped with a pressure sensor. The results obtained from the Vickers microhardness test were analyzed using the Wilcoxon test, followed by the Mann-Whitney test to assess the influence of resin type and toothpaste type at the two measurement time points. Results: Statistically significant differences (p<0.05) were observed between the two measured time points. Statistically significant differences (p<0.05) were also observed between the resins, both at 0 hours and after 30 days. However, statistically significant differences (p>0.05) were not detected between the toothpastes, both at 0 hours and after 30 days of brushing. Conclusions: The use of the tested whitening toothpaste did not significantly alter the microhardness of injectable composite resins over a 30-day period. It was found that GrandioSO Heavy Flow resin exhibited higher microhardness compared to Aster Flow resin.
Description
Dissertação para obtenção do grau de Mestre no Instituto Universitário Egas Moniz
Keywords
Pasta dentífrica branqueadora Microdureza Resina composta injetável Cor dentária