哈尔滨地区青年正常颅面三维CT测量  

Research on normal occlusion of Haerbin youth by CT three-dimension-measurement

作　　者：王梦溪[1] 王培军[2] 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,150001 [2]哈尔滨医科大学附属第二临床医院口腔正畸科

出　　处：《实用口腔医学杂志》2008年第4期579-582,共4页Journal of Practical Stomatology

基　　金：黑龙江省自然科学基金项目(编号:D200652)

摘　　要：目的：建立哈尔滨地区正常恒牙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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,大多数线距测量值男性组显著大于女性组。△GoL-S-GoR为近似等边三角形。面前部及颅底项目比值无性别差异,N-ANS∶ANS-Me∶N-Me约为0.45∶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,下颌非对称率平均值（2.52±1.42）%。结论：建立了哈尔滨地区成年人恒牙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2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 diagnoses items and normal value by CT three-dimension-measurement on permanent normal occlusion of Haerbin youth, and to provide fixed quantity foundation of diagnosis, treatment and design for orthodontics and orthognathic surgery. Methods： 58 Haerbin youth （29 males and 29 females） aged from 17 -25 with normal occlusion relation were chosen. The craniomaxillafacial hard tissue was scanned by means of the Spiral CT. Then the 3D images of craniomaxillafacial bones were reconstructed on AW4.2 workstation. 16 items of length and 9 items of angles were measured on the screen. Results： The sexual dimorphism was found in Haerbin youth. The difference displayed in size of bones, but their shapes and proportions were ahnost the same. The proportions of N-ANS：ANS-Me：N-Me and SN：Ba-S：N-Ba were about 0.45：0.56：1 and 0. 57：0. 52：1 without sexual difference. There was no difference when measurements of both sides mandible were compared. The asymmetrical proportions were no more than （ 2.52 ±1.42 ） % on average. Conclusion ： （1）Diagnoses task list was set up and reference value of permanent normal occlusion was studied. （2）The length items were highly connected with sexual discrepancy, but angles almost weren＇t. （3）A new ideal aesthetical triangle was found in AGoL-S-GoR. （4）Three-dimensional measurement by CT is more significant to the asymmetrical deformity.

关 键 词：螺旋CT 参考值 正常袷 三维测量 颅面硬组织 

分 类 号：R816.98[医药卫生—放射医学]