COMPUTER MODELING AS THE MAIN STAGE OF ENDODONTIC ROOT NEEDLE REFINEMENT
The issue of high-quality root canal treatment in deciduous and permanent teeth is currently highly relevant. There is a huge variety of tools, devices, and medicines that can be used for working with the root canals. It is often the case that in the dental market medical products of various quality characteristics are being offered for a certain manipulation, leaving consumers face to face with a tough choice of what to buy to obtain good results. According to the English-language literature review, evaluation of the technical characteristics of endodontic needles and the results of their use in practice showed a rather large number of negative aspects, which outlines the need to find the ways of endodontic needle refinement. Aim. This study aims to determine the optimal technical characteristics of endodontic root needles and to develop a new design of the endodontic needle to be applied for the uniform irrigation of the root canal delta with a minimum probability of damaging periapical tissues. Material and methods. Solid Works software package was selected as the primary working tool because it allows to build a 3D model of biological and technical models and offers the possibility to choose the material from the existing library or to create one’s own material. For the accuracy and clarity of the calculations, a biological model of the tooth and two needle models (a prototype and a modernized design) were built. Results and discussion. The result of the study is a new model of the endodontic root needle, which assures uniform irrigation of the entire surface of the root canal with minimal probability of damage to periodontal tissues. The technical solution was achieved by imparting to the design all the advantages of the analogues whilst eliminating their disadvantages. Conclusion . The technical solution proposed in our work is the new model of the endodontic needle, which enables uniform irrigation along the entire perimeter of the root canal surface and minimizes the likelihood of damaging periapical tissues even when the needle is inserted into the root canal at a maximum depth.