Comparison of Postoperative Stability Between BSSRO and Le Fort 1 Osteotomy with BSSRO in Skeletal Class III Malocclusion with Severe Open Bite

被引：7

作者：

Ooi, Kazuhiro ^{[1
,3
]}

Inoue, Nobuo ^{[2
]}

Matsushita, Kazuhiro ^{[1
]}

Yamaguchi, Hiro-o ^{[1
]}

Mikoya, Tadashi ^{[1
]}

Kawashiri, Shuichi ^{[3
]}

Tei, Kanchu ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Dent Med, Dept Oral Pathobiol Sci, Oral & Maxillofacial Surg,Kita Ku, Kita 13 Nishi 7, Sapporo, Hokkaido 0608586, Japan

[2] Hokkaido Univ, Grad Sch Dent Med, Dept Oral Hlth Sci, Gerodontol,Kita Ku, Kita 13 Nishi 7, Sapporo, Hokkaido 0608586, Japan

[3] Kanazawa Univ, Grad Sch Med Sci, Dept Oral & Maxillofacial Surg, 13-1 Takaramachi, Kanazawa, Ishikawa 9208641, Japan

来源：

JOURNAL OF MAXILLOFACIAL & ORAL SURGERY | 2020年 / 19卷 / 04期

关键词：

Skeletal stability; Sagittal splitting ramus osteotomy; Le Fort 1 osteotomy; Skeletal class III with severe open bite; ANTERIOR OPEN-BITE; LONG-TERM STABILITY; SURGICAL-ORTHODONTIC CORRECTION; MAXILLARY; FIXATION; SURGERY;

D O I：

10.1007/s12663-019-01300-2

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Introduction We aimed to investigate postoperative stability after orthognathic surgery in patients with skeletal class III malocclusion with severe open bite by comparison between bilateral sagittal splitting osteotomy (BSSRO) and BSSRO with Le Fort 1 osteotomy. Materials and methods Seventeen patients with skeletal class III malocclusion with severe open bite who were needed more than 6 degree counterclockwise rotation of distal segment by only BSSRO in preoperative cephalometric prediction. The subjects were divided into group A, where 9 patients were treated by BSSRO, and group B, where 8 patients were treated by BSSRO with Le Fort 1 osteotomy. Patient's characteristics of age, gender, preoperative over jet (OJ) and over bite (OB) were not found to be significantly different between the two groups. Counterclockwise rotation of distal segment in preoperative cephalometric prediction by only BSSRO was not found to be significantly different between group A of 7.6 (6-10.6) degree and group B of 9 (6-13) degree. The amount of rotation was reduced to 5.4 (3-10) degree by bimaxillary surgery using BSSRO and Le Fort 1 osteotomy in group B. OJ and OB were measured as occlusal stability factor. Distance between ANS-to-PNS plane and the edge of upper incisor (NF-U1Ed), and distance between Menton and edge of lower incisor (Me-L1Ed) were measured as skeletal stability factor using cephalometric analysis. These lengths were measured at pre-surgery (T0), 2 weeks after surgery (T1) and 1 year after surgery (T2), and these differences between the two groups were statistically analyzed. Results OJ and OB kept a good relation at any experimental periods. The change of Me-L1Ed was significantly larger in group A (1.21 mm at T0-T1, 1.02 mm at T0-T2) than in group B (0.14 mm at T0-T1, 0.16 mm at T0-T2). The change of NF-U1Ed was not significantly different between group A (1.07 mm at T0-T1, 0.57 mm at T0-T2) and group B (0.51 mm at T0-T1, - 0.05 mm at T0-T2). Conclusion In case with more than 6 degree counterclockwise rotation of distal segment, skeletal stability was better after bimaxillary surgery than only BSSRO; however, OJ and OB kept a good relation.

引用

页码：591 / 595

页数：5

共 26 条

[1] The stability of bilateral sagittal ramus osteotomy and vertical ramus osteotomy after bimaxillary correction of class III malocclusion [J].