Evaluation of occlusal plane alteration in Orthognathic Surgeries combined with rigid internal fixation in Class II skeletal facial standard patients

Karina Eiras Dela Coleta PIZZOL, Roberto Henrique BARBEIRO, Roberto Dela COLETA, Élcio MARCANTONIO

Aim: to access the surgical stability combined with rigid internal fixation, where the counter-clockwise jaw rotation was carried out, and consequently the occlusal plane reduction. Methods: fifteen Class II skeletal facial standard patients were studied. The surgical movements were assessed by linear measures and angles accomplished at the CefX program, collected from cephalometric teleradiography lateral norms in three different moments: (T0) presurgical, (T1) instantaneous postsurgical and (T2) postsurgical at least six months. Results and Conclusion: the results showed that the bimaxillary surgery causes meaningful facial changes and mainly, the counter-clockwise mandible rotation and consequently the occlusal plane angle reduction showed statistically stable, suggesting a reliable opinion in Class II standard facial surgeries with defective mandibular.

Keywords: Cephalometry. Internal fixators. Osteotomy, Le Fort. Surgery, oral. Dental occlusion.

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