摘要
Abstract
Objective To discuss the indication and analyze the effects of different reduction mandibuloplasty methods correcting broad mandibular by intra- oral approach. Methods 15 cases of prominent prominent mandibular angles were treated with mandibular angle full- thickness osteotomy. 15 cases of ectropion prominent mandibular angles were treated with mandibular angle sagittal split osteotomy.15 cases of compound prominent mandibular angles were treated with mandibular angle full- thickness osteotomy and sagittal split osteotomy.The results were evaluated with cephalometric analysis of X- ray flims. Results The postoperative mandibular angle, mandibular plane angle, ramus planesella nasion angle, and the width of lower face of full- thickness osteotomy group were (124.87±2.54)o,(31.32±2.03)o,(92.31±0.82)o,and (10.14±0.37)cm,respectively.The difference between these preoperative and postoperative values had statistic significance( <0.05).And those postoperative values were close to normal.Sagittal split osteotomy group,postoperative width of lower face was (10.01±0.40)cm,and statistic analysis showed significant difference from preoperation( <0.05).While the postoperative mandibular angle,mandibular plane angle, and ramus planesella nasion angle were (123.40±1.97)o,(32.33±1.23)o,and (92.33±0.77)orespectively.Statistic analysis showed no significance (>0.05).Full- thickness osteotomy and sagittal split osteotomy group,the postoperative mandibular angle, mandibular plane angle, ramus planesella nasion angle, and the width of lower face were (126.34±3.01)o, (31.53±1.50)o, (92.09±0.79)o,and (9.97±0.40)cm,respectively.The difference between these preoperative and postoperative values had statistic significance ( <0.05). The cosmetic results were satisfied.No complications,such as inferior alveolar nerve injury and mandible fracture,occurred in any patient. Conclusion For different types of mandibular angle,requires the use of the corresponding different surgical,can correct effectively the malformation of prominent mandibularangle.关键词
下颌角肥大/口内入路/下颌角全层截骨术/下颌角外板矢状劈开截骨术Key words
prominent mandibular angle/intraoral approach/mandibular angle full- thickness osteotomy/mandibular angle sagittal split osteotomy分类
医药卫生
