摘要
目的 研究国人切牙神经管的位置及下颌管、颏管的关系 ,为临床手术提供解剖学数据。方法 据开 60侧湿下颌骨标本 ,对下颌管前端、颏管和切牙神经管进行直接观察和测量。结果 在下颌管前端分出颏管和切牙神经管。切牙神经管的管径为 1.76± 0 .2 6mm ,其下缘至下颌骨下缘的垂直距离为 9.5 3± 1.43mm ,始端对应颏孔前缘的水平距离为 3 .5 4± 0 .72mm。切牙神经管内为切牙神经 ,主要分布到下颌前牙。结论 颏管和切牙神经管由下颌管发出 ,颏管向后、上、外转弯上行 。
Objective To study the feature of the incisor nerve canal and its relation to the mandibular canal and mental canal so as to offer a reliable anatomical data for the distric operation. Methods The anterior parts of the mandibular canals, the mental canals and incisor nerve canals of 60 Chinese wet mandibles have been dissected and measured. Results The anterior end of the mandibular canal can be divided into two canals: mental canal, which bends backward and upward and outward then open into mental foramina, incisor canal, which spreads forward in same direction. Incisor nerve canal is about 1.76 ± 0.26 mm in diameter. It is about 3.54 ± 0.72 mm horizontally from the anterior border of mental foramen to the posterior border of incisor nerve canal. It is about 9.53 ± 1.43 mm vertically from the superior border of the incisor nerve canal and mainly spreads to the anterior teeth. Conclusion The anterior end of mandibular canal extends into incisor and mental canal containing the nerves of same name.
出处
《临床口腔医学杂志》
2002年第2期95-96,共2页
Journal of Clinical Stomatology
关键词
解剖学
下颌管
切牙神经管
颏管
人
anatomy
mandibular canal
incisor canal
mental canal
