青少年腭部骨质厚度的CBCT研究  

Thickness distribution of adolescent palatal bone studied by CBCT

作　　者：陈建明[1] 苏小元[2] 

机构地区：[1]广州医科大学口腔医学院.附属口腔医院.口腔医学重点实验室,510140 [2]广州医科大学附属广州市第十二人民医院

出　　处：《实用口腔医学杂志》2014年第6期783-786,共4页Journal of Practical Stomatology

基　　金：广州医科大学附属口腔医院课题资助(编号:GYKQ20110-10)

摘　　要：目的:研究青少年腭部骨质厚度分布,为腭部植入微种植体提供参考。方法:用NNT Viewer软件将20例青少年正畸患者的头颅锥形束CT扫描数据的腭部情况进行分析,以切牙孔为原点,间隔2 mm,矢状方向分为1~10共10个点,横向分为A^F共6个点,测量统计60个点位的骨厚度,并行统计学分析。结果:B2、B3、C2、C3、D3、E3、E4、F4、F5各点间差异无统计学意义(P>0.05);而F3点与B2、B3、C2、C3、D3、E3、E4、F4、F5各点间的差异具有统计学意义(P<0.05);D3与D4间差异具有统计学意义(P<0.05)。结论:适于微种植体植入的部位在腭中缝左右2~4 mm、离切牙孔4~6 mm区域,而距腭中缝8~10 mm、离切牙孔6~8 mm区域较为安全,同时可获得厚度为6 mm左右的骨组织支持。Objective： To study the thickness distribution palatal bone in adolescents and provide a clinical reference for implanting mini-screws. Methods： Cone-beam CT head scan data of palate of 20 adolescent orthodontic patients were measured with NNT Viewer software. 60 points of the palate bone on one side were designed as 1- 10 in sagittal direction and as A- F in transvers direction with incisive foramen as the point of A and 0,the distance between each 2 adjacent points was 2 mm. The bone thickness of the 60 points were measured and statistically analyzed. Results： There were no significant differences among B2,B3,C2,C3,D3,E3,E4,F4 and F5（P〈0. 05）. Statistically significant difference was found between F3 and B2 or B3,C2,C3,D3,E3,E4,F4 and F5（P〉0. 05）. There was significant difference between D3 and D4（P〈0. 05）. Conclusion： The appropriate areas for implanting miniscrews in palate may be about 2- 4 mm near the palatal suture and 4- 6 mm behind incisor canal,and 8- 10 mm near the palatal suture,6- 8 mm behind incisor canal. Those regions are safe for implanting mini-screws and can provide about 6 mm bone tissue support.

关 键 词：硬腭 锥形束CT(CBCT) 骨质厚度 微种植体 

分 类 号：R783.5[医药卫生—口腔医学]