Morphology of roots and canals in maxillary first premolars
- VernacularTitle:离体的上颌第一前磨牙的根管和牙根情况的研究
- Author:
Kai CUI
;
Ping WANG
;
Mingli ZHANG
- Publication Type:Journal Article
- Keywords:
Dental anatomy;
Premolar;
Dental pulp cavity
- From:
Journal of Practical Stomatology
2001;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To investigate the roots and canals morphology o f extracted maxillary first premolars. Methods: The root morphol ogy and the root canals of 115 extracted maxillary first premolars were visualiz ed on radiographs taken in the mesio-distal direction, then the teeth were cut transversely and root sections were examined, the root canal systems was analyse d with Vertucci’s classification. Results: 74(64%) teeth were w ith one root, 41(36%) with two roots, all teeth with two roots had two canals a nd each canal with one apical foramen,〔TypeⅠ(1)〕.39% of the single-root teet h demonstrated one canal, whereas 61% of the single-root teeth had two canals, 〔TypeⅡ(2-1), TypeⅣ(2) and TypeⅤ(1-2)〕.Conclusions: The roots of maxillary first premolars possesses a variety of canal system types.
