摘要
目的:利用锥形束CT(cone beam computed tomography,CBCT)测量分析上颌中切牙区唇舌向牙槽骨量,为微种植体的安全植入提供参考。方法:选取80例患者的CBCT影像资料,用Dolphin 11.0进行三维重建,测量鼻腭管前壁至上颌牙槽前壁的距离,以及上颌中切牙间矢状面在距离参考平面14.0 mm、16.0 mm、18.0 mm、20.0 mm四个植入高度处唇舌向骨质厚度。结果:鼻腭管前壁至牙槽前壁的距离,从下向上依次为(7.98±1.24)mm、(8.27±1.44)mm、(10.31±2.00)mm,逐渐增大,有显著性差异(P<0.05);不同植入高度间唇舌向骨质厚度无显著性差异(P>0.05);各高度组唇舌向骨质厚度均为男性大于女性(P<0.05)。结论:上颌中切牙间植入长度为6 mm的微种植体是安全的,可避免微种植体进入鼻腭管。
Objective： The primary aim of this study was to measure the buccolingual alveolar bone thickness between the maxillary central incisors by CBCT,providing reference for the safe miniscrew placement. Methods： The cone beam computed tomography images of80 patients were used. For each subject,the distance between the anterior nasopalatine canal and maxillary anterior buccal bone were measured. Besides,the buccolingual alveolar bone thickness on the median sagittal plane were measured at four different levels of 14. 0,16. 0,18. 0 and 20. 0 mm from the reference plane. Results： Distance between the anterior nasopalatine canal and maxillary anterior buccal bone were（ 7. 98 ± 1. 24） mm,（ 8. 27 ± 1. 44） mm,（ 10. 31 ± 2. 00） mm. It increased from the oral cavity to the nasal cavity,and had significant difference. The buccolingual alveolar bone thickness has no significant difference at four different levels. Male has greater bone thickness than female at every level. Conclusions： The miniscrew with 6 mm length in the bone is safe to be placed. It is safe to implant miniscrews of 6 mm length between the maxillary central incisors,which will avoid the nasoplatine canal injury.
出处
《口腔生物医学》
2015年第4期215-218,共4页
Oral Biomedicine
基金
江苏高校优势学科建设工程资助项目(2014-37)
关键词
鼻腭管
唇舌向测量
上颌中切牙
微种植体
锥形束CT
Nasopalatine Canal
Buccolingual Measurement
Maxillary central incisor
Miniscrews
Cone beam computed tomography
