摘要
目的通过对山东地区汉族人上颌第二前磨牙的锥束CT(CBCT)观察,了解其根管解剖特征。方法筛选山东地区汉族人上颌第二前磨牙90颗,用CBCT对其牙根管情况进行观察。结果 90颗牙中单根牙86颗,双根牙4颗。单根管为53颗(58.9%),双根管为37颗(41.1%)。根管类型出现了VERTUCCI分类法中的Ⅰ~Ⅵ型。单双混合型根管中根管分叉区可出现在根管任何位置,绝大多数靠近根尖1/3区。约12.2%的牙齿发现侧支根管,约4.4%的牙齿发现管间吻合。结论上颌第二前磨牙根管解剖结构较复杂,在临床工作中应掌握其结构特点。
Objective To study the canal morphology of maxillary second premolar in Han people of Shandong province by using cone beam computed tomography (CBCT). Methods Maxillary second premolars (n:90) were screened and scanned with CBCT,their dental canals were observed. Results Of the 90 teeth, single rooted tooth was seen in 86, two-rooted tooth was found in four. Single root canal was seen in 53 teeth (58.9%), 37 (41.1%) teeth were found to have two-rooted canal. Ⅰ- Ⅵ type in VERTUCCI grouping appeared in this study. In single-double mixed pattern root canal, the bifurcation could be seen at any location of the root, mostly near to 1/3 of the root tip. Collateral pulp canalwas found in 12.2% of the teeth, and about 4.4% of the teeth had an inter-canal anastomosis. Conclusion The anatomic structure of root canal of maxillary second premolar is complicated, this feature is essential in clinical practice.
出处
《青岛大学医学院学报》
CAS
2012年第3期269-270,273,共3页
Acta Academiae Medicinae Qingdao Universitatis