口腔颌面外科杂志2024，Vol.34Issue(4)：282-288,7.DOI:10.12439/kqhm.1005-4979.2024.04.005
骨性Ⅲ类错(牙合)畸形下颌偏斜患者正颌手术前后髁突形态变化的研究
Study on the morphological changes of condyles before and after orthognathic surgery in patients with skeletal class Ⅲ malocclusion and mandibular deviation
摘要
Abstract
Objective:To examine the effects of orthognathic surgery on the condylar morphology in patients with skeletal class Ⅲ malocclusion and mandibular deviation,as well as the variations in condylar morphology and alterations in individuals with varying degrees of deviation.Methods:According to the value of menton deviation(MD),20 patients with skeletal class Ⅲmalocclusion and mandibular deviation were selected,and then divided into group A(mild deviation group:4 mm≤MD＜10 mm)and group B(severe deviation group:MD≥10 mm),10 cases in each group.Condyles were three-dimensionally reconstructed in Proplan CMF using the craniofacial spiral CT data from the T1(before surgery)and T2(six months after surgery)periods.Condylar morphological index(MI)was derived after reading the condylar volume and surface area.Results:Condyles in group A had a decrease in volume and surface area in T2(P＜0.05)on both the deviated side(DS)and the non-deviated side(NDS).For condylar volume,surface area,and MI during the T1 and T2 periods in each group:The NDS was larger than the DS,and the bilateral difference was statistically significant as group A is smaller than group B;the values of each index in group A were higher than those in group B,and there was a statistical difference in the DS(P＜0.05).There was a statistical difference in the magnitude of changes in volume and surface area between the two groups on the DS(P＜0.05),and the degree of condylar change between T2 and T1 is different.Conclusion:Condylar volume and surface area were reduced after orthognathic surgery,and statistically significant differences in condylar volume and surface area reduction were more pronounced in the mildly deviated group at 6 months postoperatively on the DS.Condylar volume,surface area,and MI were less than those on the NDS,and the DS indexes were higher in individuals with mild deviation than in individuals with severe deviation.The morphological changes of condyles after surgery were related to the degree of deviation.关键词
骨性Ⅲ类错(牙合)畸形/下颌偏斜/正颌手术/髁突形态/三维重建Key words
skeletal class Ⅲ malocclusion/mandibular deviation/orthognathic surgery/condylar morphology/three-dimensional reconstruction分类
医药卫生引用本文复制引用
史红丽,孙秀梅,肖艳菊,李男男,王琳,吴国民..骨性Ⅲ类错(牙合)畸形下颌偏斜患者正颌手术前后髁突形态变化的研究[J].口腔颌面外科杂志,2024,34(4):282-288,7.基金项目
吉林省卫生健康技术创新项目(2019J031) （2019J031）
吉林省财政厅科技项目(JCSZ2020304-20) （JCSZ2020304-20）
