Three Dimensional Changes in the Pharyngeal Airway Space after Mandibular Setback Surgery : 1 year follow up
- 주제(키워드) Mandibular setback surgery , Bimaxillary surgery , Class III malocclusion , Pharyngeal airway , CBCT
- 주제(DDC) 617.6
- 발행기관 아주대학교
- 지도교수 송승일
- 발행년도 2021
- 학위수여년월 2021. 8
- 학위명 석사
- 학과 및 전공 임상치의학대학원 임상치의학과
- 실제URI http://www.dcollection.net/handler/ajou/000000031121
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
Objectives: This study evaluated the long term changes up to 1 year in the pharyngeal airway space after bilateral sagittal split ramus osteotomy mandibular setback surgery and bimaxillary surgery through three-dimensional computed tomography analysis. Materials and Methods: A total of 37 patients diagnosed with skeletal class III malocclusion underwent BSSRO setback surgery only (Group 1, n=23) or bimaxillary surgery (Group 2, n=14). Cone-beam computed tomography scan were taken before surgery (T0), 2 months after surgery (T1), 6 months after surgery (T2) and 1 year after surgery (T3). The nasopharynx (Nph), oropharynx (Oph), hypopharynx (Hph) volume and anteroposterior (AP) distance were measured through the InVivo Dental Application version 5. Results: In Group 1, Oph volume and Hph volume were significantly decreased and maintained after the surgery (T1). In Group 2, Nph volume, Oph volume and Hph volume were decreased and relapsed at 1 year postoperatively (T3). Conclusion: In Class III malocclusion patients, mandibular setback surgery only showed a greater reduction in pharyngeal airway space than bimaxillary surgery, and bimaxillary surgery was more stable in terms of airway. Therefore, it is important to evaluate the airway space before surgery and include it in the surgical plan.
more목차
Ⅰ. INTRODUCTION 1
Ⅱ. MATERIALS AND METHODS 3
A. Patients 3
B. CBCT examination and measurements 4
C. Statistical analysis 10
Ⅲ. RESULTS 11
Ⅳ. DISCUSSION 21
Ⅴ. CONCLUSION 25
REFERENCES 26
국문요약 31
