Oral Health and Dental Management

Correlation between relapse and proximal segment movement after sagittal split ramus osteotomy(SSRO) using 3D image: Retrospective study

4^th International Conference on Orthodontics

October 09, 2023 | Prague, Czech Republic

Oh Hyun Kyung

Kyung Hee University School of Dentistry, South Korea

Scientific Tracks Abstracts: OHDM

Abstract:

Introduction: This study is to prove statistically that effects of the proximal segment movement to setback amount and skeletal relapse after sagittal split ramus osteotomy for using the 3-dimensional image. Method and Materials: 31 patients (62 proximal segment) with skeletal class �?� who were treated with B-SSRO in KyungHee Medical center by a surgeon were reviewed. The surgeon used a one miniplate and three screw, proximal segment repositioning device and bent miniplate for the semi rigid fixation. Cone beam computed tomography were taken before surgery(T0), immediate postoperatively(T1), 3months(T2) and 6months(T3) postoperatively. Angulation of the proximal segment, amount of setback and relapse were measured using OnDemand 3D (CyberMed., Korea). A statistical evaluation was done using SPSS(V20.0, IBM Pearson’s correlation test) (P<0.05) Results: Immediately after surgery, the rotation of proximal segment occurred medially and clockwisely. Increased the setback amount, the rotation and relapse was increased. But, the rotation of the proximal segment during surgery is not affected a skeletal relapse. Among the movement of rotation, the pitching and rolling movement during follow up period is affected a skeletal relapse. Conclusion: Proximal segment has changed immediately after surgery (yawing movement, pitching movement, rolling movement), but it is repositioned original position overtime. There is a significant correlation with the setback amount, the rotation of proximal segment and skeletal relapse. The rotation of proximal segment during surgery is not affected a skeletal relapse. But, during follow up period, the pitching and rolling movement is the correlation with skeletal relapse.

Biography :

Oh Hyun Kyung, a resident of oral maxillary surgery at Kyung Hee University Dental Hospital in Korea. Since Oh Hyun Kyung was in dental school, she has been very interested in orthodontic surgery that can greatly affect the aesthetics and function of patients. Oh Hyun Kyung was able to see several orthodontic surgeries while majoring in oral maxillary surgery, and she was fascinated by many advantages of orthodontic surgery. However, there were often patients with recurrence of asymmetry after orthodontic surgery, and by exploring the reason, Oh Hyun Kyung had an opportunity to rethink the process of orthodontic surgery itself. Oh Hyun Kyung’s goal is to develop her own surgical method to reduce the likelihood of recurrence.