摘要
目的:观察下颌第三磨牙根尖孔及侧孔,为临床治疗提供解剖依据。方法:将147个下颌第三磨牙制作成透明标本,用体式显微镜对根尖孔和侧孔数目及分布进行观察和统计。结果:147个下颌第三磨牙中,融合根有66个,分叉根有81个。融合根有1个根尖孔的比例最大,占40.9%,其次是2个根尖孔,占33.3%;分叉根近中根有1个根尖孔的比例最大,占65.4%,其次是2个根尖孔,占25.9%;分叉根远中根有1个根尖孔的占93.8%。下颌第三磨牙的侧孔发生率高,多数离体牙只有一个侧孔。结论:下颌第三磨牙根尖孔和侧孔的数目和分布存在一定规律。对临床根管治疗有一定的指导意义。
Objecttive：To investigate the apical and lateral foramina in mandibular third molars. Method： 147 mandibulars were manipulated using clearing technique, then the apical and lateral foramina of all the teeth were investigated under stereomicroscope. Result：Of the 147 mandibular third molars, 66 had a fused root and 81 had separated roots. The percentage of one foramen and two foramina in the fused root was 40.9% and 33.3% respectively：There was a high percentage of one foramen in mesial of separated roots （65.4%）, next was two foramina （25.9%）. What＇s more, the percentage of one foramen in distol roots was 93.8%. The prevalence of single lateral foramen in mandibular third molars was high. Conclusion： The distribution of foramen and lateral foramen in mandibular molars has inherent feature.
出处
《临床口腔医学杂志》
2007年第8期463-464,共2页
Journal of Clinical Stomatology
关键词
下颌第三磨牙
根尖孔
侧孔
mandibular third molar： foramen： lateral foramen
作者简介
通讯作者：陈建钢：Email：cwxy8180573@sina．com．cn
