Avaliação da acurácia no uso da prototipagem rápida no tratamento endodôntico de canais radiculares calcificados em dentes anteriores - um estudo ex vivo

Abstract

The present research aims to evaluate the accuracy of the guided endodontic technique by comparing different lengths of washers, for access to the calcified root canals of anterior teeth, using rapid prototyping (PR) for the preparation of endodontic guide, through the association of conical beam computed tomography (TCFC) images and images obtained from the bench scanner, with a minimally invasive approach aiming to minimize the wear and tear of healthy dental tissue. All images and preparation of the guides were made at the Dental Clinic of UCS. For this purpose, 6 human anterior teeth were selected, with calcification in the pulp chamber and / or in the root canal. Then, the jaw model was made with self-curing acrylic resin so that it reproduces the position of these teeth in the socket. This model was scanned, with the aid of Conical Beam Computed Tomography, and then scanned with a bench scanner, both images obtained were superimposed on a software, in order to plan the endodontic guide, which was made using different lengths of washer. For teeth 1, 2 and 3, 7 mm washers were used and for teeth 4, 5 and 6, 3 mm washers were used. After accessing with the 1.3mm drill, a new tomography of the model was performed to allow the overlapping of the pre-surgical and post-surgical virtual planning to analyze the access deviation. The final results obtained showed that there was no statistically significant difference in the comparison between the planning measures and the measures after the execution of the access. Therefore, with this study we can conclude that the length of the washer does not influence the accuracy of endodontic access in the guided endodontic technique, confirming its speed, safety and effectiveness. [resumo fornecido pelo autor]