安氏Ⅱ类Ⅰ分类错畸形矫治前后唇部软硬组织突度的变化  

The Lip Changes after Orthodontic Treatment in Angle's Ⅱ1 Malocclusion

作　　者：雍敏[1] 窦伟[1] 

机构地区：[1]宁夏医学院附属医院口腔正畸科,银川750004

出　　处：《宁夏医学院学报》2006年第5期401-403,共3页Journal of Ningxia Medical College

摘　　要：目的探讨成人安氏Ⅱ类Ⅰ分类错畸形拔牙矫治前后唇部软硬组织突度的变化规律,为临床治疗提供参考。方法对安氏Ⅱ类Ⅰ分类错畸形成人患者24例,拔牙后采用方丝弓矫治技术,测量矫治前后软组织侧貌突度的7个项目和硬组织侧貌突度11个项目的变化值。结果(1)鼻唇角、下唇倾角、上唇厚度增大,上唇突度、下唇突度减小(P<0.05);(2)ANB角、U1-NA角、L1-NBmm、U1-SN角、U1-NAmm、L1-MP角、OJ减小,U1-L1角增大(P<0.05)。结论成人安氏Ⅱ类Ⅰ分类错畸形拔牙矫治后,唇部软硬组织突度表现为上前牙突度减小和上下唇突度减小,软硬组织侧貌明显改善。Objective To evaluate the changes of lips treated with extraction orthodontic treatment in adults with Angle＇ s Ⅱ 1 malocclusion and to provide an assistance to clinical diagnosis and planning of orthodontic treatments. Methods 24 patients treated with extraction were. recruited and cephalometric analysis was performed in Angle＇ s Ⅱ 1 malocclusion. Spss 11.5 software was used in statistical analysis. Results The protrusion of the upper lip reduced significantly. The nasolabial angle, upper lip thickness and Bs-Li-FH angle increased significantly. And the protrusion of the lower lip reduced. Overjet, angle U1-SN,U1-NA（mm） and angle L1-MP reduced significantly. Angle ANB, angleU1-NA, ,L1-NB（mm） reduced, too. But angle U1-L1 increased signifi- cantly. Conclusion The features of Angle＇ s Ⅱ 1 malocclusion involved soft and hard tissue profile. It was important to analyze soft tissue and hard tissue for designation, planning, diagnosis, treatment and prognosis in Angle＇s Ⅱ 1 malocclusion. The orthodontic treatment mainly affected the position of upper and lower teeth. After treatment the patients＇ profile was improved significantly.

关 键 词：安氏Ⅱ类Ⅰ分类 X线头影测量 软硬组织侧貌 矫治 

分 类 号：R783.5[医药卫生—口腔医学]