Unilateral intraoral vertical ramus osteotomy and sagittal split ramus osteotomy for the treatment of asymmetric mandibles
2
조회
0
다운로드
5
인용
0
참고문헌
키워드
초록
In surgery for facial asymmetry, mandibles can be classifiedinto two types, rotational and translational, according to the required mandibular move-ments for surgery. During surgery for rotational mandibular asymmetry, a bilateral sagittal split ramus osteotomy (BSSRO) may cause a large bone gap between the proximal and distal segments as well as condylar displacement, resulting in a relapse of the temporomandibular joint disorder, especially in severe cases. The intraoral vertical ramus osteotomy has an advantage, in this respect, because it causes less rotational displacement of the proximal segment on the deviated side and even displaced or rotated condylar segments may return to their original physiologic position. Unilateral intraoral vertical ramus osteotomy (UIVRO) on the short side combined with contralateral SSRO was devised as an alternative technique to resolve the spatial problems caused by conventional SSRO in cases of severe rotational asymmetry. A series of three cases were treated with the previously suggested protocol and the follow-up period was analyzed. In serial cases, UIVRO combined with contralateral SSRO may avoid mediolateral flaringof the bone segments and condylar dislocation, and result in improved condition of the temporomandibular joint. UIVRO combined with contralateral SSRO is expected to be a useful technique for the treatment of rotational mandibular asymmetry.
Abstract
In surgery for facial asymmetry, mandibles can be classifiedinto two types, rotational and translational, according to the required mandibular move-ments for surgery. During surgery for rotational mandibular asymmetry, a bilateral sagittal split ramus osteotomy (BSSRO) may cause a large bone gap between the proximal and distal segments as well as condylar displacement, resulting in a relapse of the temporomandibular joint disorder, especially in severe cases. The intraoral vertical ramus osteotomy has an advantage, in this respect, because it causes less rotational displacement of the proximal segment on the deviated side and even displaced or rotated condylar segments may return to their original physiologic position. Unilateral intraoral vertical ramus osteotomy (UIVRO) on the short side combined with contralateral SSRO was devised as an alternative technique to resolve the spatial problems caused by conventional SSRO in cases of severe rotational asymmetry. A series of three cases were treated with the previously suggested protocol and the follow-up period was analyzed. In serial cases, UIVRO combined with contralateral SSRO may avoid mediolateral flaringof the bone segments and condylar dislocation, and result in improved condition of the temporomandibular joint. UIVRO combined with contralateral SSRO is expected to be a useful technique for the treatment of rotational mandibular asymmetry.
참고문헌 (17)
- Schwartz HC, "Efficient surgical management of mandibular asymmetry", J Oral Maxillofac Surg, 69, pp.645~654 (2011)
- Epker BN, "Dentofacial deformities, integrated orthodontic and surgical correction" (1999), Mosby
- Ellis E, "A method to passively align the sagittal ramus osteotomy segments", J Oral Maxillofac Surg, 65, pp.2125~2130 (2007)
- Yoshida K, "Minimizing displacement of the proximal segment after bilateral sagittal split ramus osteotomy in asymmetric cases", J Oral Maxillofac Surg, 59, pp.15~18 (2001)
- 안주홍, "Surgical treatment planning for the two subtypes of mandibular asymmetry", 대한구강악안면외과학회지, 40(5), pp.205~205 (2014), 대한구강악안면외과학회
- Ellis E 3rd, "Histologic examination of the temporomandibular joint after mandibular advancement with and without rigid fixation: an experimental investigation in adult Macaca mulatta", J Oral Maxillofac Surg, 49, pp.1316~1327 (1991)
- Ueki K, "Horizontal changes in the condylar head after sagittal split ramus osteotomy with bent plate fixation", Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 106, pp.656~661 (2008)
- Ellis E 3rd, "Condylar positioning devices for orthognathic surgery:are they necessary?", J Oral Maxillofac Surg, 52, pp.536~552 (1994)
- Costa F, "Condylar positioning devices for orthognathic surgery: a literature review", Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 106, pp.179~190 (2008)
- Bell WH, "Treatment of temporomandibular joint dysfunction by intraoral vertical ramus osteotomy", Int J Adult Orthodon Orthognath Surg, 5, pp.9~27 (1990)
- Bell WH, "Condyle position and mobility before and after intraoral vertical ramus osteotomies and neuromuscular rehabilitation", Int J Adult Orthodon Orthognath Surg, 6, pp.97~104 (1991)
- Choi YS, "Remodelling pattern of the ramus on submentovertex cephalographs after intraoral vertical ramus osteotomy", Br J Oral Maxillofac Surg, 51, pp.e259~e262 (2013)
- Jung HD, "The chronologic prevalence of temporomandibular joint disorders associated with bilateral intraoral vertical ramus osteotomy", J Oral Maxillofac Surg, 67, pp.797~803 (2009)
- Hall HD, "Prospective study of modified condylotomy for treatment of nonreducing disk displacement", Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 89, pp.147~158 (2000)
- Hall HD, "One- and three-year prospective outcome study of modified condylotomy for treatment of reducing disc displacement", J Oral Maxillofac Surg, 58, pp.7~17 (2000)
- Ueki K, "Condylar and disc positions after intraoral vertical ramus osteotomy with and without a Le Fort I osteotomy", Int J Oral Maxillofac Surg, 36, pp.207~213 (2007)
- Lai W, "Postoperative mandibular stability after orthognathic surgery in patients with mandibular protrusion and mandibular deviation", Int J Adult Orthodon Orthognath Surg, 17, pp.13~22 (2002)