"Quantificação, por diferentes métodos, de material obturador remanescente no interior de canais radiculares, após desobturação e repreparo" / Quantity, through different methods, of the remaining material, after deobstruction and re-instrumentation

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The aim of the present study was to evaluate the effectiveness of computed tomography and cross section in quantifying the remaining filling material during retreatment. For that, 32 teeth were prepared, filled and after the period necessary to the sealer set, the specimens had their filling material removed and were reprepared. The amount of filling material were evaluate for different methods: computed tomography and Leica Qwin software. First, the volumes of filling material remaining were measured through the computed tomography with the specimens still entire. After, they were cross sectioned with a thickness of 1mm allowing measure of: the volume through computed tomography and the areas of remaining material in which section through the Leica Qwin software. To allow a comparative analysis among methods, the area values were used to calculate the filling material remaining volume using the truncated cone formula. The results were submitted to the t Student test for linked data which identify a significant difference to the level of 5% in the quantification of remaining material when the comparison of the volumes obtained after Leica Qwin analysis and application of truncated cone formula in relation to the results obtained from computed tomography, being the first method that allow the bigger quantification, therefore, most efficient. In relation the tomographic method there was no significant difference between the measured made in the intact specimen or after they were cross-sectioned.

ASSUNTO(S)

reintervenção endodôntica endodontic retreatment computed tomography filling material material obturador tomografia computadorizada

ACESSO AO ARTIGO

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