正畸正颌联合治疗骨性Ⅲ类错牙合畸形侧貌软硬组织变化及相关性分析

›› 2020, Vol. 11 ›› Issue (1): 49-52.

正畸正颌联合治疗骨性Ⅲ类错牙合畸形侧貌软硬组织变化及相关性分析

方梦如¹,张阳²,倪洁丽¹,马俊青³

1. 南京医科大学附属口腔医院
2. 南京医科大学
3. 南京医科大学口腔医学院

收稿日期:2019-09-23 修回日期:2020-03-01 出版日期:2020-03-25 发布日期:2020-04-07
通讯作者: 马俊青 E-mail:majunq@163.com
基金资助:
国家自然科学基金;江苏省高校优势学科建设工程资助项目;江苏省高等学校自然科学研究

Changes and correlation in profile skeletal and soft tissues of patients with skeletal Class III malocclusion after combined orthodontic and surgical treatment

Received:2019-09-23 Revised:2020-03-01 Online:2020-03-25 Published:2020-04-07

摘要/Abstract

摘要： 目的：测量骨性Ⅲ类错畸形正畸正颌联合治疗前后侧貌软硬组织变化及相关性分析，评估正畸正颌联合治疗的美学效果，为更好地预测术后美学性数值提供研究支持。方法：选择32例严重的骨性Ⅲ类错畸形患者，并在正畸治疗前、正畸治疗后拍摄CBCT。通过CBCT获得精确的头影侧位片，选择头影测量标记点，测量侧貌相关的角度、厚度、距离。对侧貌相关的角度、软组织厚度进行配对t检验，并对软硬组织的矢状面距离变化进行Pearson相关性分析。结果：鼻唇角、颏唇角、下颌平面与SN前下交角、下中切牙长轴与SN后下交角差异显著（P<0.05），上中切牙长轴与SN后下交角差异无统计学意义。LL’处软组织厚度、Bs处软组织厚度增加，差异有统计学意义（P<0.05），Sn处软组织厚度、UL’处软组织厚度、Pos处软组织厚度差异无统计学意义。软/硬组织对应点：鼻下点/A点、上唇缘点/上中切牙点、下唇缘点/下中切牙点、颏唇沟点/B点、软组织颏前点/颏前点、软组织颏顶点/颏顶点的矢状向距离变化显著相关，相关系数分别为0.69、0.59、0.73、0.85、0.90、0.97。结论：骨性Ⅲ类错畸形患者正畸正颌手术治疗后，侧貌美观明显改善。相关性分析显示，术后颏部位置预测性佳，唇位置预测性差，下颌比上颌更具有可预测性。

关键词: 骨性Ⅲ类错牙合畸形, 软硬组织变化, 正畸正颌联合治疗, 相关性分析

Abstract: Objective: To evaluate changes and correlations of facial soft and hard tissues in skeletal Class III malocclusion patients after a combined orthodontic and orthognathic surgery treatment. Method: In this study, 32 patients with skeletal class III malocclusion received a combined orthodontic and surgical treatment. Cone-beam computed tomography (CBCT) was performed pre-(T1) and post-(T2) treatment. Lateral cephalometric radiographs were obtained from CBCT scans. Landmarks on the sagittal plane were selected to measure the angle, thickness and distance of the profile. Paired t-test was used to compare the angles and thicknesses, and Pearson linear correlation analysis was conducted to examine the correlation between soft and hard tissue variations. Results: There were significant angle differences in NLA, MLA, MP-SN and L1-SN (P< 0.05) with the exception of U1-SN (P >0.05). Soft tissue thickness TLL', TBs significantly increased (P < 0.05). However, TSn, UL', TUL' and TPos did not significantly change (P > 0.05). The soft and hard tissue variation ratios of Sn/A, UL’/UI, LL’/LI, Bs/B, Pos/Po, Gns/Gn were 0.69, 0.59,0.73, 0.85, 0.90 and 0.97, respectively. Conclusion: Profile improvement was remarkable after orthodontic-orthognathic treatment in skeletal class III malocclusion patients. Pearson’s correlation analysis showed that the position predictability was more favorable for the chin compared to the lip. Additionally, the position predictability of the mandible outdid the maxilla.

Key words: skeletal Class III malocclusion, changes in soft and hard tissues, combined orthodontic and orthognathic treatment, pearson linear correlation analysis

方梦如张阳倪洁丽马俊青. 正畸正颌联合治疗骨性Ⅲ类错牙合畸形侧貌软硬组织变化及相关性分析[J]. 口腔生物医学, 2020, 11(1): 49-52.

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