open access
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open access
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ISSN : 0376-4672
Recently, the presurgical orthodontic duration tends to be shortened by virtue of the advancement of surgical and orthodontic techniques in class III orthognathic surgery cases. But the predictability of the surgical results should be secured by removing several uncertain factors in presurgical orthodontic treatment. The purpose of this study is to investigate the influence of immediate postsurgical occlusal stability on postsurgical mandibular change. The study includes 40 patients who underwent orthognathic surgery to correct skeletal class III malocclusion. The patients were divided into two groups based on the numbers of occlusal contact in surgical setup occlusion: group1(stable surgical occlusion, n=24) and group 2(unstable surgical occlusion, n=16). Changes of horizontal and vertical mandibular measurements during postsurgical follow up period(from 1 week postsurgery to 12month after debonding) were compared to examine the differences between two groups. The stability of surgical occlusion is one of the factors influencing postsurgical mandibular changes in class III malocclusion. The various class III malocclusion cases have specific prerequisites for the orthognathic surgery according to the skeletal patterns. The prerequisites should be obtained by minimum presurgical orthodontics to increase the predictability of the surgical results.
1. Kim BH. Treatment goals and planning in class III 2-jaw surgery- the contribution of jaw rotation. J Korean Found Gnatho- Orthod Res 2005;7:39-51.
2. Jeong MH, Choi JH, Kim BH, Kim SG, Nahm DS. Soft tissue changes after double jaw rotation surgery in skeletal class III malocclusion. J Kor Oral Maxillofac Surg 2006;32:559-65.
3. Ko EW, Hsu SS, et al. Stability of skeletal class III correction with and without presurgical orthodontic treatment. J Oral Maxillofac Surg 2011;69:1469-77.
4. Proffit WR, White RP. Combined surgicalorthodontic treatment: Who does what, when? in Surgical-Orthodontic Treatment. St Louis, MO, Mosby, 1991;202-3.
5. Franco JE, Van Sickels JE, Thrash WJ. Factors contributing to relapse in rigidly fixed mandibular setbacks. J Oral Maxillofac Surg 1989;47:451-6.
6. Cost F, Robiony M, Politi M. Stability of sagittal split ramus osteotomy used to correct class III malocclusion: review of the literature. Int J Adult Orthodon Orthognath Surg 2001;16:121-9.
7. Yoshida K, Rivera GA et al. Long-term prognosis of BSSO mandibular relapse and its relation to different facial types. Angle Orthod 2000;70:220-6.
8. Lee JY, Yu HS, Ryu YK. A study on skeletal relapse patterns following orthognathic surgery of class III patients: comparison between SSRO and IVRO. Korea J Orthod 1998;28:461-77.
9. Nagasaka H, Sugawara J, et al. “Surgery First” skeletal class III correction using the skeletal anchorage system. J Clin Orthod 2009;43:97-105.