摘要
目的 :研究国人颏管的形态与位置 ,为口腔科牙种植术等颏区手术提供解剖学数据。方法 :剖开 6 0侧福尔马林固定的湿下颌骨标本的下颌管前端 ,进行观察测量。结果 :下颌管前端向中线分出一切牙神经管后 ,该管有 96 .7%弯向后上形成颏管再开口于颏孔 ,3.3%直接开口于颏孔 ;颏管长约 ( 4 .0 1±1 .2 0 )mm ,管径约 ( 2 .6± 0 .6 )mm ;颏孔前缘对应下颌管前端的水平距离为 ( 3.54± 0 .70 )mm ,颏孔下缘至下颌管上缘的垂直距离为 ( 3.2 1± 0 .90 )mm ;下牙槽神经在下颌管末端分成两支 ;切牙神经穿切牙神经管分布到切牙 ,颏神经穿颏管出颏孔。结论 :下颌管前端向后上方续为颏管 ,颏管内有颏神经走行。
Objective:To provide reliable anatomical data for the operation in the mental region.Methods:The anterior parts of 60 mandibular canals of Chinese wet mandible specimens fixed with formol were dissected and measured.Results:The incisive nerve canal were apart from anterior ends of mandibular canals,and only 3.3% of them ended directly in mental foramina,96.7% of them bended backward and upward forming mental canal and then ended in the mental foramina.Mental canal's length was 4.01±1.20 mm averagely and its diameter was 2.6±0.6 mm.The horizontal distance from the anterior border of mental foramen to the anterior end of mandibular canal was 3.54±0.70 mm.The vertical distance from the inferior border of mental foramen to the superior border of mandibular canal was 3.21± 0.90 mm.Inferior alveolar nerve at the end of mandibular canal divided into two branches:the incisive nerve passed through incisive nerve canal and extended to incisors,the mental nerve passed through incisive nerve canal and extended to incisors,the mental nerve passed through mental canal and then pierced out from mental foramen.Conclusions:The anterior end of mandibular canal extends and becomes mental canal containing mental nerve.
出处
《中国临床解剖学杂志》
CSCD
北大核心
2001年第3期215-216,共2页
Chinese Journal of Clinical Anatomy
关键词
下颌管
颏管
颏孔
应用解剖
mandibular canal
mental canal
mental foramen
applied anatomy
