摘要
目的观察离体下颌前牙唇舌向根管形态及弯曲情况,为掌握正确地开髓方向提供依据。方法采用间接数字化X线成像技术,对收集的离体105颗下颌前牙进行近远中向拍摄,根据Weine根管分类标准,观察根管类型;采用改良Schneider测量方法,分析根管弯曲情况。沿下颌前牙近远中向X线片根中1/3画延长线,观察延长线在下颌前牙切端的位置。结果下颌前牙根管在唇舌向半数以上存在弯曲,根尖多数弯向唇侧,弯曲部位多集中在根尖1/3。结论下颌前牙根管形态较为复杂,弯曲率较高,开髓方向应靠近切缘。
Objective To Investigate the root canal configuration and canal curvature of permanent mandibular anterior teeth in labiolingual direction. Methods A total of 105 anterior teeth were collected and examined by indirect digital X-ray radiography from labiolingual direction. The canal configuration and curvature was analyzed by Weine and Schneider methods. Results Most root canals of mandibular anterior teeth were type I, and more than half were mesial- distally curved. The most curved place was located in the apical third of the canal. Conclusion Root canal configuration of mandibular anterior teeth are relatively complex and have a higher bending rates. The direction of pulp explosure should be close to the incisal edge.
出处
《北京口腔医学》
CAS
2011年第4期228-229,共2页
Beijing Journal of Stomatology
关键词
下颌前牙
根管形态
弯曲
Mandibular anterior teeth
Root canal
Curvature
