哈尔滨地区正常恒牙颅面三维CT测量研究  

Research on items and reference value range by CT three-dimensional measurement on permanent normal occlusion of Harbin area

作　　者：王梦溪[1] 王培军[1] 张澄[1] 张晔[1] 

机构地区：[1]哈尔滨医科大学附属口腔医院口腔正畸科,哈尔滨150001

出　　处：《口腔医学》2008年第8期393-395,共3页Stomatology

基　　金：黑龙江省自然科学基金(D200652)

摘　　要：目的建立哈尔滨地区正常恒[牙合]颅面三维CT测量项目和参考值范围。方法采用螺旋CT和AW4.2工作站对58例哈尔滨地区17-25岁正常恒[牙合]青年颅颌面硬组织重建测量,并进行统计分析。结果角度测量项目基本无性别差异,绝大多数线距测量值男性组显著大于女性组;面前部及颅底项目比值无性别差异,N-ANS∶ANS-Me∶N-Me约为0.46∶0.56∶1,SN∶Ba-S∶N-Ba约为0.57∶0.52∶1;左右测量项目间无统计学差异;下颌非对称率〈2.5%（2.4°或2.3 mm）。结论建立了哈尔滨地区成年人恒[牙合]三维CT颅颌面硬组织正常值数据库。线距测量有性别差异,男性较大;男女两组间角度测量值及面部比率呈较高的一致性;GoL-S-GoR是一理想的美学三角;该方法对面部不对称性畸形分析较为可靠。Objective To establish the diagnosis items and normal value range by CT three-dimensinnal measurement on permanent normal occlusion of Harbin adults, and to provide a fixed quantity foundation of diagnosis, treatment and design for orthodontics and orthodontical surgery.. Methods 58 Harbin adults （male：29 and female：29） aged from 17 to 25 with normal occlusion were chosen. The craniomaxillofacial hard tissue was scanned by means of the Spiral CT. Then the 3D images of craniomaxillofacial bones were reconstructed on AW4.2 workstation. 16 items of lengths and 9 items of angles were measured on the screen. Results The sexual dimorphism was found in Harbin adults, and the differences displayed in the size of bones, but their shapes and proportions were nearly the same. The pmportions of N-ANS：ANS-Me： N-Me and SN： Ba-S： N-Ba were about 0.46：0.56：1 and 0.57：0.52：1. There was no difference when measurements of both sides of mandible were compared. The asymmetrical proportions were no more than 2.5 % （2.4°or 2.3 ram） on average. Conclusion A diagnosis task list was set up and reference value of permanent normal occlusion was studied. The length items were highly connected with sexual discrepancy, but angles almost weren＇ t. A new ideal aesthetical triangle was found in GoL-S-GoR. Three-dimensional measunnent by CT was mnre significant to the asymmetrical deformity.

关 键 词：螺旋CT 参考值 正常 三维测量 颅面硬组织 

分 类 号：R322.41[医药卫生—人体解剖和组织胚胎学]