Year : 2020

Volume : Volume 11

Issue : Issue 1

Abstract

Background:  The present study was conducted to assess outcome of orthognathic surgery in class III malocclusion patients. Materials & Methods: 64 patients of class II malocclusion underwent 1-stage maxillary and mandibular orthognathic surgery with clockwise rotation, without 2-piece segmental surgery; and 2-stage maxillary and mandibular orthognathic surgery. In all patients, the lateral cephalograms were taken.  Results: SNA was 82.8 and 82.3 degree before treatment, and after treatment respectively, SNB was 80.4 and 77.1 degrees before treatment, and after treatment, ANB was 2.5 and 4.2 degrees before treatment and after treatment, Go- Me (mm)  was 79.2 and 82.1 before treatment and after treatment, U1- SN was 108.3 and 96.3 degrees before treatment, and after treatment, L1- GoGn was 70.5 and 78.2 degrees before treatment, and after treatment, upper lip- E line (mm) was 1.2 and 0.4 before treatment and after treatment and lower lip- E line (mm) was 4.5 and 2.5 before treatment and after treatment respectively. The difference was significant (P< 0.05). Conclusion: There was an improvement of dental, skeletal as well as soft tissue factors after orthognathic surgery in class II malocclusion patients.

Keywords: Class II malocclusion, Mandibular prognathism, Orthognathic surgery.