A preliminary study of improving the System B root canal filling technique
- VernacularTitle:System B根充技术改良研究
- Author:
Fangfang XIE
;
Wenxia CHEN
- Publication Type:Journal Article
- Keywords:
Infected root canal;
Root canal treatment;
Root canal filling
- From:
Journal of Practical Stomatology
2001;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To combine the cold lateral condensation with System B root canal filling techniques in order to increase the amount of gutta-percha to fit different canal that could improve percentage of gutta-percha-filled area(PGFA)and decrease the probability of apical extrusion. Methods: Two groups of extracted human canines (total 80) were prepared by modified double-flared technique and filled with gutta-percha by System B technique and the combined technique respectively. The overfilling samples were collected. A horizontal section was cut 1.5 mm from the apical foramen of each tooth. The cross-sectional area of the canal and the gutta-percha was measured using an image-analysis program. The PGFA was then calculated. Results:Overfilling rate in the combined technique group was significantly lower than that of the control group (P
