Estudo comparativo entre a oclusão de modelos de gesso e oclusão virtual em planejamentos de cirurgia ortognática

Abstract

Orthognathic surgery is the procedure used for the correction of dentofacial deformities. The success of the procedure depends on both surgical skill and accurate and detailed diagnosis and planning. The diagnosis and, especially, the planning of those procedures were highly influenced in the last years by the technological development. The development of software and hardware helped the emergence of diagnostic tools and threedimensional planning, making these surgeries more precise and accurate. However, there are still many doubts about the fidelity of the planning or occlusal diagnosis totally virtual, without the presence of physical models in plaster, for example. This scientific work seeks to study occlusal stability through dental contact in virtual planning software and will be presented in two scientific articles. Dolphin Imaging software 11.9v. was used for the surgical planning of surgeries with the use of two sets of occlusal models. One with the occlusion obtained in a totally virtual way and the other with the final occlusion obtained through physical models, scanned in position of virtual occlusion. Article 1 presents the validation of the study model of occlusal stability measured in both occlusions. Article 2 presents the results of the proposed methodology through the contact area in pixels. The results allow to conclude that the best fit surface obtained through totally virtual resources presents differences in the final position of the occlusion obtained 10 through the manipulation of physical models. However, the results were not statically significant between the occlusal contact areas obtained, although the surface obtained and measured by the virtual method was higher. More tools for occlusal virtual planning have yet to be developed and further studies must be conducted so that the results obtained encourage more surgeons to perform surgical planning in a completely virtual manner without the need for laboratorial steps in the process.