The effect of different flute design and torque-controlled motor on the shaping ability of simulated resin root canals.
10.5395/JKACD.2005.30.6.486
- Author:
Hyoung Mee ROH
1
;
Bock HUH
;
Hyeon Cheol KIM
;
Jeong Kil PARK
Author Information
1. Department of Conservative Dentistry, School of Dentistry, Pusan National University, Korea. jeongkil@pusan.ac.kr
- Publication Type:Original Article
- Keywords:
Centering ratio;
Ni-Ti file;
Shaping ability;
Torque-controlled endodontic motor
- MeSH:
Dental Pulp Cavity*;
Torque
- From:Journal of Korean Academy of Conservative Dentistry
2005;30(6):486-492
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of this study was to compare the shaping ability of the two different Ni-Ti file systems and the two different engine systems in simulated canals. A total of four groups of each 10 were tested. Each group was instrumented with HeroShaper(R)and Endo-Mate2(R) (Group HE), HeroShaper(R) and Tecnika(R) (Group HT), ProFile(R) and Endo-Mate2(R) (Group PE), and ProFile(R) and Tecnika(R) (Group PT). Canal preparation time was recorded. The images of pre- and post- instrumented root canals were scanned and superimposed. The amounts of increased width and centering ratio were measured and calculated at apical 1, 3 and 5 mm levels. These data were statistically analyzed with one-way ANOVA and Duncan's multiple range test The results of this study were as follows; 1. Canal preparation time of HT group was the shortest (p < 0.05). 2. The amount of increased canal width in HE group was significantly larger than PT group at apical 1 mm level (p < 0.05). At apical 3 mm level, PT group was significantly smaller than other groups (p < 0.05). At apical 5 mm level, PE group was significantly larger than PT group (p < 0.05). 3. The amount of centering ratio in HE group was significantly larger than other groups (p < 0.05). At apical 5 mm level, HT group was significantly larger than PE group and PT group (p < 0.05). Under the condition of this study, torque-controlled endodontic motor is safer than no torque controlled motor, especially when the active file is used.
