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- W244719146 abstract "The root scaling produces a smear layer which contains microorganisms and toxins that obliterates the dentinal tubules and covers the root surface, affecting the periodontal healing process. Different substances have been used to promote root biomodification with the purpose of creating the demineralization of the root surface and the collagen fibrils exposure. The aim of this study was to evaluate different concentrations, modes and application times of citric acid in the root biomodification. Human teeth had an area of 3x2mm delimited from the apical to the cement-enamel junction. This area was scaled, with 50 strokes by hand instruments, to produce smear layer. The specimens were divided in 6 groups. (45 samples/group): physiologic solution (control) and citric acid (0.5%, 1%, 2%, 15% and 25%). The application time was 1 , 2 and 3 to each group. The application modes were: a) topic application, with cotton pellets; b) brushing, with a soft brush; c) burnishing, with cotton pellets. In all modes, the solution was renewed every 30”. The samples were submitted to ethylic alcohol and HMDS dehydration and then they were evaluated using the scanning electron microscopy. A blind and trained examiner evaluated photomicrographs based on Sampaio s index (1999). Data were statistically analyzed by means of a binomial test (p 0.05). The statistical analysis showed that the best results were achieved with the 25% concentration applicated by brushing for 3 minutes. Thus, theses parameters are the recommended for root biomodification with the citric acid." @default.
- W244719146 created "2016-06-24" @default.
- W244719146 creator A5019434883 @default.
- W244719146 date "2008-03-24" @default.
- W244719146 modified "2023-09-24" @default.
- W244719146 title "Avaliação in vitro de diferentes concentrações, tempos e modos de aplicação do ácido cítrico na biomodificação radicular: análise por meio de microscopia eletrônica de varredura" @default.
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