In vitro study of the anatomy of 80 maxillary first permanent molars
- VernacularTitle:上颌第一恒磨牙80颗牙体解剖的离体研究
- Author:
Zheng HUANG
;
Dingming HUANG
;
Hong TAN
;
Xuedong ZHOU
- Publication Type:Journal Article
- Keywords:
Anatomy of tooth;
Clearing technique;
Maxillary first permanent molar;
Apical foramen
- From:
Journal of Practical Stomatology
2000;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the anatomy of the maxillary first permanent molars. Methods:Macrography was used to observe the morphology of the mesiobuccal root,the degree of abrasion,the morphology of the floor of pulp cavity, the number and type of apical foramen.Vernier was used to measure the length indexes and the distance from the apical foramen to the tip of the root.Clearing technique was used to investigate the root canal systems. Results:26.9% of mesiobuccal root had type III apical foramen,56.25% of mesiobuccal root had two canals,7.5% teeth had three root canals. Conclusions: The maxillary first permanent molar has a high ratio of more than one root canal in mesiobuccal root(63.75%).
