Application of dental operative microscope in detecting the mesiobuccal root canal orifice of the maxillary first permanent molar
- VernacularTitle:牙科显微镜在探查上颌第一恒磨牙近颊根管口的应用
- Author:
rong, DU
;
jin, HONG
- Publication Type:Journal Article
- Keywords:
maxillary first permanent molar;
second mesiobuccal root canal orifice;
dental operative microscope and ultrasonic technique
- From:Journal of Shanghai Jiaotong University(Medical Science)
2006;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the effect of the dental operative microscope(DOM) and the ultrasonic apparatus in detecting the mesiobuccal root canal orifice of the maxillary first permanent molar(MFPM). Methods According to traditional method,the pulp chamber was opened and the second mesiobuccal root canals(MB2) were explored in 76 MFPM teeth.If MB2 was not found,then we modified the shapes of the pulp chambers and detected the orifices.At last,MB2,not found under naked eyes,was explored with DOM and ultrasonic technique. Results The detection rate of the second mesiobuccal orifice of MFPM was 81.6%.The rate was only 31.6% when using traditional method,while after modifying the shapes of the pulp chambers there was an increase of 30.2% under naked eyes and then another 19.7% increase was obtained by using DOM and ultrasonic apparatus.The distance between two mesiobuccal root canal orifices was(1.42?0.51) mm. Conclusion It is helpful to find some invisible orifice of MB2 by using DOM and ultrasonic technique,and it would be beneficial to improve the root canal therapy.
