Evaluation of homogeneity and density of root canal filling with four obturation techniques
10.3760/cma.j.issn.1002-0098.2010.11.010
- VernacularTitle:四种根管充填技术根充同质性和致密度评价
- Author:
Chen ZHANG
1
;
Wei HUANG
;
Ben-Xiang HOU
Author Information
1. 首都医科大学
- Keywords:
Root canal obturation;
Root canal preparation;
Percentage of gutta-percha-filledarea
- From:
Chinese Journal of Stomatology
2010;45(11):673-677
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the homogeneity and density of root canal filling with four obturation techniques. Methods Forty extracted single root teeth were randomly divided into four groups with 10 teeth each. Under simulated clinical conditions, the root canals were shaped with Nickle titanium rotary files(Protaper) using crown-down technique and were filled with warm vertically condensed guttapercha (group A), core carrier technique-thermafil (group B), guttaflow (group C) and conventional cold laterally condensed gutta-percha ( group D). Roots were sectioned at four levels . The cross-sections were photographed through a microscope, the photos were analysed, and the percentage of gutta-percha filled area (PGFA) was measured. Results The overall PGFA values were ( 96. 5 ± 3.6 ) %, ( 95.6 ± 3.9 ) %,(86.5±5.7)% and (81.5 ±4.2)% for groups A, B, C and D, respectively. The differences between these groups were statistically significant (P ＜ 0. 01 ). Group A and B were significantly higher than group C and D ( P ＜ 0. 01 ). The PGFA in group D was significantly lower than that in other groups (P ＜ 0. 01 ). The average PGFA in both group A and B was higher than that of group C and D at apical and middle level (P ＜0. 01 ). Conclusions Warm vertical condensation and thermafil produce significantly higher PGFA than guttaflow and cold lateral condensation technique.
