Root canal obturation of C-shaped canals in mandibular second molars:An in vitro study by three techniques
- VernacularTitle:3种方法充填下颌第二磨牙C型根管的实验研究
- Author:
Na NI
;
Liangzhong LI
;
Huan WANG
- Publication Type:Journal Article
- Keywords:
Root canal obturation;
Mandibular Second Molars;
C-shaped canal;
Microleakage;
Cross-sections
- From:
Journal of Practical Stomatology
2001;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To compare the sealing ability and marginal adaptation of three obturation techniques when used in root canal obsturation of c-shaped canals of mandibular second molars. Methods:Twenty-one extracted mandibular second molars with C-shaped canals were randomly divided into three groups. After instrumentation, the canals were filled using three different techniques: ObturaⅡ(group A), cold lateral condensation (group B) and Thermafil (group C). Then, gaps,obturated lateral canals and reticular apical triangles on the X-ray were counted. After dyeing for 7 days in the ink, dyeing lines were measured to reflect the microleakage. The percentages of gutta-percha, sealer and gaps on the root canal surface were determined by analyzing the images of 3 sections per tooth. Results:The reticular apical triangles were most frequently observed in group C(P
