Comparative analysis of root canal anatomy after different mechanical preparation

Teses de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2015INTRODUCTION: Endodontology is concerned with the study of the form, function and health of, injuries to and diseases of the dental pulp and periradicular region, their prevention and treatment. To ensure the success of the endodontic tratment, is important to consider the respect by original root canal anatomy. AIM: Evaluate the maintenance of the original canal anatomy when comparing three different rotary systems, ProTaper UniversalTM, ProTaper NextTM and Protaper GoldTM. MATHERIALS AND METHODS: A quantitative analysis was made by measuring the canal with of 36 samples, distributed by three groups of twelve samples each (Group A -ProTaper UniversalTM, Group B - ProTaper NextTM, Group C Protaper GoldTM, by superimposed images of pre and post instrumentation using Rhinoceros Software. In the qualitative analysis, blinded examiners evaluated three images from each group and refer the presence or absence of rectifications in the coronal and apical curvatures, as well as the presence of significant apical transportation. The statistical analysis was obtained using Kolmogorov-Smirnov test, Mann-Whitney post hoc multiple comparisons U test and One-Way ANOVA, with a significance of p<0,05. RESULTS: Considering the inner side of both curvatures, differences between files are statistically significant (p