Effects of anticurvature filing on danger zone width in curved root canals.
10.5395/JKACD.2009.34.3.232
- Author:
Eui Seong KIM
1
;
Hyun Jung KIM
;
Deog Gyu SEO
;
Byoung Duck ROH
Author Information
1. Department of Conservative Dentistry, College of Dentistry, Yonsei University, Korea. operatys16@yuhs.ac
- Publication Type:Original Article
- Keywords:
anticurvature filing;
stainless steel k-file;
nickel-titanium ProFile
- MeSH:
Dental Pulp Cavity;
Dentin;
Molar;
Stainless Steel;
Tooth
- From:Journal of Korean Academy of Conservative Dentistry
2009;34(3):232-239
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The aim of this study was to compare the effects of anticurvature filing with stainless steel k-file versus nickel-titanium ProFile in the shaping of mesial root canals of extracted mandibular molars. A total of 60 canals from 30 mesial roots of mandibular molar teeth were randomly assigned to three groups with n=20 each. They were prepared with different instruments and methods: The first group with stainless steel k-file and circumferential filing, the second with precurved stainless steel k-file and anticurvature filing and the third with ProFile (.06 taper) and anticurvature filing. Using a micro-computed tomography system (skyscan-1076, SKYSCAN, Antwerpen, Belgium), pre-and post-operative specimens were scanned. Subsequently, canal images were superimposed and changes in root dentin thickness were measured at distal side (danger zone) of the canal. The data was analyzed using a one-way ANOVA and the comparison of means was conducted using a post hoc multiple comparison Tukey test. There were significant differences in the change of root dentin thickness at the 7.5~8.5mm level between group 1 and 2, 3.5~6mm level between group 1 and 3 and 3.5~6mm level between group 2 and 3(n=20, P<0.05).
