哈尔滨地区正常青年牙列CT测量初步研究  

Preliminary dentition analysis of youth with normal occlusion in Harbin by CT three-dimension-measurement

作　　者：王梦溪[1] 李新[1] 毕良佳[1] 

机构地区：[1]哈尔滨医科大学附属第四临床医院口腔科,黑龙江哈尔滨150001

出　　处：《口腔医学》2014年第3期208-211,共4页Stomatology

基　　金：黑龙江省教育厅科学技术研究项目(12511221)

摘　　要：目的建立哈尔滨地区正常恒牙[牙合]青年牙[牙合]系统三维CT正常值数据库。方法采用螺旋CT和AW4．2工作站对哈尔滨地区50例18～25周岁正常恒牙[牙合]青年牙殆扫描重建、测量分析。结果①男性各段牙弓宽度、牙弓张角和牙弓斜长都较女性大。②正常[牙合]左右牙弓大小不完全一致。男性右侧牙弓尖牙段较大，而女性左侧牙弓磨牙段较大。③牙冠宽度无显著性别差异。④Bolton前牙指数有显著性别差异，Bohon全牙指数无显著性别差异。⑤上下前牙牙量间、上下全牙列牙量间有较强的相关性，而上下前牙与侧方牙群牙量相关性男女间有所差异。结论①男性牙弓较女性宽大。②正常[牙合]牙弓并非完全对称，女性左侧占优势，男性右侧占优势。③替牙期侧方牙群牙量的估计，男性参考上切牙量较为可靠，而女性则参考下切牙量为宜。Objective To establish the database of teeth and dental arch by CT 3D-measurement on permanent normal occlusion of the youth in Harbin, and to provide practical basis for the clinical application. Methods The untreated normal occlusion of 50 Harbin youth aged 18-25 were evaluated by means of the spiral CT and AW4.2 workstation. Some diagnoses items were measured,and dentition indexes and linear correlation of normal occlusion were obtained. Results （1）The width,angle,latero-length of the dental arch in men were significantly larger than those in women. （2）In normal occlusion, dental arch was generally symmetric,but there was asymmetry to a small degree. Right canine latero-length in men was larger,while left molar latero-length in women was larger. （3）There was no marked sexual difference showed in tooth size. （4）The sexual dimorphism was found in Bolton＇s index of anterior teethgroup. （5）The correlation analysis of inter-arch tooth size revealed that there were significant positive relationships between upper anterior teethgroup and lower＇s and between upper overall teeth group and lower＇s,additionally sexual differences were found in incisor teeth group and lateral teeth relationship. Conclusions （1）The dental arch of men is wider than that of women. （2） Dentalarch is not exactly symmetric, and superior sides were noticed in right canine part of men and left molar part of women. （3） When we estimate the lateral teeth size,appropriate references are upper incisor teeth for men and lower incisor teeth for women.

关 键 词：正常 牙弓 三维测量 BOLTON指数 

分 类 号：R780.1[医药卫生—口腔医学]