하악 전돌증 환자에서 악교정 수술전후의 하악 과두각의 변화에 관한 연구 = A Clinical Study of Changes in Condylar angulation and Intercondylar width between pre- and post-orthognathic surgery in mandibular prognathic patients

다국어 초록 (Multilingual Abstract)

The main purpose of the surgical correction of dentofacial deformity is to improve esthetic appearance and masticatory functions. In this study, changes in intercondylar width (ICW) and condylar angulation that occurred following bilateral sagittal split osteotomy and mandibular setback were documented and examined using submentovertex radiography. Also, ICW and condylar angulation of patients group were compared with normal control group. Twenty normal adults and sixteen patients were involved in this study.
The results were obtained as follows ;
1. Mean condylar angulation of normal control group (n=20) with normal TMJ function and normal occlusion were 15.96° on Left TMJ and 18.30° on Right TMJ.
2. Mean preoperative condylar angulation of patient group were 17.28° on Lt. TMJ and 18.97° on Rt. TMJ. There was no significant difference between the preoperative condylar angulation (n=16) and normal control group (n=20).
3. Mean postoperative condylar angulation of patient group were 17.88° on Lt. TMJ and 18.97° on Rt. TMJ. There was no significant difference between the pre-and postoperative condylar angulation(P>0.05).
4. Mean ICW of normal control group(n=20) was 107.35㎜ and mean ICW of patient group was 104.28㎜. There was no significant difference between preperative ICW and normal control group.
5. Mean postoperative ICW of patient group was 108.13㎜. There was no significant difference between the pre-and postoperative ICW.(P>0.05)
6. There were no significant differences between pre-and postoperative ICW and condylar angulation of male patients (n=6) and female patients (n=10) groups.