安氏Ⅱ类错与正常软硬组织X线头影测量对比  

A COMPARATIVE ANALYSIS OF HARD AND SOFT TISSUE BETWEEN ANGLE CLASSⅡ OCCLUSION AND NORMAL OCCLUSION

作　　者：武伟[1] 杨竹丽[1] 何开云[1] 

机构地区：[1]青岛大学医学院附属青岛市市立医院口腔科,山东青岛266011

出　　处：《齐鲁医学杂志》2008年第1期38-40,共3页Medical Journal of Qilu

摘　　要：目的通过X线头影测量,研究安氏Ⅱ1类和Ⅱ2类错的软硬组织特征。方法选取安氏Ⅱ类错病人60例,其中安氏Ⅱ1类错与Ⅱ2类错各30例,对12项硬组织测量指标和15项软组织测量指标进行X线头影测量。结果与正常相比,安氏Ⅱ1类错ANB角、U1-SN角、U1-NA距离、L1-MP角、L1-NB距离、面凸角、上唇突角、上下唇突角、上唇突距、下唇突距、下唇凸厚增大(t=2.344~8.148,P<0.05),SNB角、U1-L1角、鼻唇角、上唇倾角、下唇倾角、上下唇角、颏唇沟角、Z角减小(t=-6.916^-2.517,P<0.05)。安氏Ⅱ2类错ANB角、U1-L1角、鼻唇角、上唇倾角、上下唇突角、上唇凸厚、下唇凸厚明显增大(t=2.794~8.668,P<0.05),SNB角、SN-MP角、U1-SN角、U1-NA距离、L1-NB距离、下颌角、下唇倾角、上下唇角、颏唇沟角、下唇突角、上唇突距减小(t=-9.160^-2.256,P<0.05)。其余测量指标未发现统计学差异(P>0.05)。结论安氏Ⅱ1类与Ⅱ2类错具有各自的软硬组织特点。Objective To analyze the hard and soft tissue features between Angle class Ⅱ division 1 occlusion and Angle class Ⅱ division 2 occlusion. Methods Thirty cases of Angle Class Ⅱ division 1 malocclusions and 30 cases of class Ⅱ division 2 malocclusions were studied for their cephalometric roentgenographics. Results Compared with normal occlusion, the angles of ANB, U1-SN, L1-MP, Ns-Sn-Pos, FH-Ns-Ls, Ls-Ns-Li and the distance of U1-NA, L1-NB, Ls-E, Li-E, Li-L1 were greater in Angle class Ⅱ division 1 occlusion （P〈0. 05） ,and the angles of SNB, U1-L1, Cm-Sn-Ls, A＇Ls-FH, B＇Li-FH, A＇Ls-B＇Li, Pg＇- B＇-Li, Z were smaller （P〈0.05）. The angles of ANB, U1-L1, Cm-Sn-Ls, A＇Ls-FH, Ls-Ns-Li and the distance of Ls-U1, Li-L1 were greater in Angle class II division 2 occlusion （P〈0.05）, the angles of SNB, SN-MP, U1-SN, Ar-Go＇-Me＇, B＇ Li-FH, A＇ Ls- B＇Li, Pg＇-B＇-Li, FH-Ns-Li and the distance of U1-NA, L1-NB, Ls-E were smaller （P〈0.05）. The other variables had no difference （P〉0.05） between them. Conclusion Two types of Class Ⅱ malocclusions had different hard and soft tissue features.

关 键 词：错[牙合] 安氏Ⅱ类 头部 摄影测量法 

分 类 号：R783.5[医药卫生—口腔医学]