A utilização da prototipagem rápida como um método auxiliar no tratamento endodôntico de canais radiculares calcificados

Abstract

The present research aimed to apply an endodontic technique of minimally invasive approach in calcified root canals with the purpose of making an endodontic guide using Cone-Beam Computed Tomography (CBCT) images, together with images obtained from a scanner. and subsequent to analyse of accuracy in endodontic treatment when rapid prototyping (endodontic guide fabrication) is used to remove pulp calcifications. For this, two human teeth were selected with the presence of pulp calcification, previously donated by a dental surgeon through a human teeth donation term. After verification of pulp and or root calcification by CBCT images, a block that reproduces the shape of a jaw was made, such as the positioning of the teeth in an alveolus, in which some teeth were individually inserted to serve as a reference for the posterior region. of the two teeth that have calcification. Next, a flatbed scanner added to a CBCT image was scanned using the calcified tooth jaw model set and then the images were superimposed with the purpose of generating endodontic guides to direct the drill access to calcification. All images and guide making were performed at the UCS Dental Radiology Clinic. After calcification removal, the canal was accessed with endodontic instruments and the modeling and obturation of these root canals were cleaned. Subsequently, the degree of accuracy of the guide from the previous planning of the guide to the end result of the endodontic treatment was analyzed, providing us with accuracy results of up to 76% in tooth 01 with 24% deviation variation, already in tooth 02 in which greater calcification present in the pulp chamber, there was a 50% deviation variation with a 50% accuracy. Comparisons were made by a dental surgeon, dental radiologist with experience in CBCT image handling. The final results were compared from the previous virtual planning to the final preparation of the guide and endodontic treatment in order to find the accuracy of the device. Therefore, can be concluded at the end of the study that the guide gives us a good accuracy in performance (76% and 50%), with satisfactory results despite some standard deviations (24% and 50%), because it achieved main objective. bringing safer and more effective resolutions for the treatment of calcified root canals, performing their endodontic treatments successfully (sic).