济南地区下切牙先天缺失患者颌面形态研究  

Maxillofacial morphology in patients with congenital absence of lower incisor in Jinan area

作　　者：王以玲 魏竹亮 王春玲 

机构地区：[1]磷南市口腔医院正畸科,250001

出　　处：《中华口腔正畸学杂志》2012年第3期158-161,共4页Chinese Journal of Orthodontics

摘　　要：目的通过对济南地区下切牙先天缺失患者X线头影测量分析，了解济南地区下切牙先天缺失患者颌面形态发育特征；探讨下切牙先天缺失对牙殆关系及颌面部发育的影响。方法选取80例13-21岁的下切牙先天缺失患者作为研究对象，对其进行X线头影测量分析。结果80例患者中，缺失1颗下切牙者为43例，占53．75％；缺失2颗下切牙者为37例，占46．25％。80例患者的矢状面型构成比为：Ⅰ类面型35％，Ⅱ类面型60％，Ⅲ类面型5％；垂直面型构成比为：均角型45％，高角型40％，低角型15％。结论济南地区下切牙先天缺失患者矢状向Ⅰ类面型构成比明显减小，Ⅱ类面型构成比明显增大；垂直向主要表现为均角型和高角型面型。多数患者表现为下颌骨发育不足，上下颌骨位置不调，下颌及其软组织后缩。Objective To analyze the maxillofacial morphology in patients with congenital absence of lower incisors in Jinan area. Methods Eighty patients, aged 13-21 years, with congenital absence of lower incisors were analyzed cephalometrically. Students＇ t-test was used for data analysis. Results The facial patterns were skeletal Class Ⅰ （35%）, skeletal Class Ⅱ （60%） and skeletal Class Ⅲ （5%）. The vertical skeletal patterns were average vertical type （45%）, high vertical type （40%） and low vertical type （15%）. Conclusions Most patients showed Class Ⅱ skeletal pattern with retrusive mandible and chin. All the patients presented with relatively larger upper and smaller lower arches.

关 键 词：下切牙 先天缺失 颌面形态 

分 类 号：R783.5[医药卫生—口腔医学]