Analysis of postsurgical relapse patterns in one-jaw surgery: skeletal factors and clustering analysis in patients with mandibular setback
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Objectives: To compare presurgical skeletal factors and postsurgical relapse patterns between more relapsed (MR) and less relapsed (LR) groups. Materials and Methods: This study retrospectively examined patients who underwent mandibular setback surgery, classifying them into two groups based on the amount of relapse of the pogonion using K-means analysis. Comparisons were conducted by analyzing cephalometric radiographs presurgically (T0), at 1-month post-surgery (T1), and immediately after orthodontic treatment (T2). Results: The MR group at T0 had a lower articular angle and AB to the mandibular plane angle (MPA), higher gonial angle, shorter anterior and posterior facial heights, and shorter Frankfort horizontal plane to the upper incisor and first molar. The articular angle in the MR group increased postoperatively. The Frankfort MPA (FMA) did not differ significantly between the MR and LR groups. Conclusion: Acute articular angle and short facial height with a high gonial angle in the presurgical stage can predict surgical relapse regardless of the FMA.
Abstract
Objectives: To compare presurgical skeletal factors and postsurgical relapse patterns between more relapsed (MR) and less relapsed (LR) groups. Materials and Methods: This study retrospectively examined patients who underwent mandibular setback surgery, classifying them into two groups based on the amount of relapse of the pogonion using K-means analysis. Comparisons were conducted by analyzing cephalometric radiographs presurgically (T0), at 1-month post-surgery (T1), and immediately after orthodontic treatment (T2). Results: The MR group at T0 had a lower articular angle and AB to the mandibular plane angle (MPA), higher gonial angle, shorter anterior and posterior facial heights, and shorter Frankfort horizontal plane to the upper incisor and first molar. The articular angle in the MR group increased postoperatively. The Frankfort MPA (FMA) did not differ significantly between the MR and LR groups. Conclusion: Acute articular angle and short facial height with a high gonial angle in the presurgical stage can predict surgical relapse regardless of the FMA.
참고문헌 (17)
- Trauner R, "The surgical correction of mandibular prognathism and retrognathia with consideration of genioplasty : Part I. Surgical procedures to correct mandibular prognathism and reshaping of the chin", Oral Surg Oral Med Oral Pathol, 10, pp.677~689 (1957)[DOI]
- Moose SM, "Surgical correction of mandibular prognathism by intra-oral sub-condylar osteotomy", Br J Oral Surg, 1, pp.172~176 (1964)[DOI]
- Proffit WR, "Stability after surgical-orthodontic correction of skeletal Class III malocclusion. I. Mandibular setback", Int J Adult Orthodon Orthognath Surg, 6, pp.7~18 (1991)
- Tseng YC, "Are hyoid bone and tongue the risk factors contributing to postoperative relapse for mandibular prognathism?", Biomed Res Int, 2016, pp.5284248~ (2016)[DOI]
- Kobayashi T, "Stability of the mandible after sagittal ramus osteotomy for correction of prognathism", J Oral Maxillofac Surg, 44, pp.693~697 (1986)[DOI]
- Reitzik M, "Skeletal and dental changes after surgical correction of mandibular prognathism", J Oral Surg, 38, pp.109~116 (1980)
- Yoshida K, "Long-term prognosis of BSSO mandibular relapse and its relation to different facial types", Angle Orthod, 70, pp.220~226 (2000)
- Joss CU, "Stability of hard tissue profile after mandibular setback in sagittal split osteotomies : a longitudinal and longterm follow-up study", Eur J Orthod, 30, pp.352~358 (2008)[DOI]
- Jakobsone G, "Three-year follow-up of bimaxillary surgery to correct skeletal Class III malocclusion : stability and risk factors for relapse", Am J Orthod Dentofacial Orthop, 139, pp.80~89 (2011)[DOI]
- Lee JH, "The assessment of the stability in mandibular setback surgery related to spatial factors under rotational control of the proximal segment", Oral Surg Oral Med Oral Pathol Oral Radiol, 117, pp.560~566 (2014)[DOI]
- Tseng YC, "Relationship between frontal gap and postoperative stability in the treatment of mandibular prognathism", Biomed Res Int, 2016, pp.7046361~ (2016)[DOI]
- Ricketts RM, "Philosophies and methods of facial growth prediction", Proc Found Orthod Res, pp.11~30 (1971)
- Hsu SS, "The stability of mandibular prognathism corrected by bilateral sagittal split osteotomies : a comparison of bi-cortical osteosynthesis and monocortical osteosynthesis", Int J Oral Maxillofac Surg, 41, pp.142~149 (2012)[DOI]
- Lee NK, "Evaluation of post-surgical relapse after mandibular setback surgery with minimal orthodontic preparation", J Craniomaxillofac Surg, 41, pp.47~51 (2013)[DOI]
- Lee HG, "Mandibular stability using sliding or conventional four-hole plates for fixation after bilateral sagittal split ramus osteotomy for mandibular setback", Br J Oral Maxillofac Surg, 55, pp.378~382 (2017)[DOI]
- Kim JW, "Postsurgical stability after mandibular setback surgery with minimal orthodontic preparation following upper premolar extraction", J Oral Maxillofac Surg, 71, pp.1968~ (2013)[DOI]
- Xiangdong QI, "The influence of the closing and opening muscle groups of jaw condyle biomechanics after mandible bilateral sagittal split ramus osteotomy", J Craniomaxillofac Surg, 40, pp.e159~e164 (2012)[DOI]