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- W372724162 abstract "The aim of this in vitro study has been to evaluate the sealing capacity of three filling techniques of root canals based on the observation of apical dye penetr ation: Lateral Condensation, Thermafil and Soft-Core. In order to do this, 49 human single-rooted, straight teeth which were extracted entire, were prepared. After a biomechanical preparation, 45 teeth were randomly allocated to three treatment groups and within each group teeth were filled using one of the three above-mentioned techniques. Four teeth were used as positive and negative controls. The teeth, except the negative control, were covered with nail varnish up to 2mm from the apical foramen. The sealing capacity of each treatment was assessed by means of the measurement of the apical dye penetration, after seven days of exposure to a 2% solution of methylene blue at 37oC. The recorded data were statistically analysed, at a significance level of 0.05, i. e., at a confidence level of 95 %. Under the described conditions, none of the filling techniques used was able to avoid apical dye penetration of the methylene blue solution. The statistical analysis of the research results has shown that there is a significant difference between the average values of apical dye penetration obtained for the three filling techniques. The group of teeth which was filled using the Thermafill technique was the one which showed lower levels of dye penetration, whereas the values of the Lateral Condensation and Soft-Core techniques were much higher with no significant difference between them." @default.
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- W372724162 date "2002-01-01" @default.
- W372724162 modified "2023-09-23" @default.
- W372724162 title "Estudo Comparativo da Capacidade de Selamento de Três Técnicas de Obturação de Canais Radiculares" @default.
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