Obturation efficiency of non-standardized gutta-percha cone in curved root canals prepared with 0.06 taper nickel-titanium instruments.
10.5395/JKACD.2005.30.2.079
- Author:
Eun Ah LEE
1
;
Sung Kyo KIM
Author Information
1. Department of Conservative Dentistry, School of Dentistry, Kyungpook National University, Korea. skykim@knu.ac.kr
- Publication Type:Original Article
- Keywords:
Lateral compaction;
Gutta-percha cone;
Non-standardized cone;
Root canal obturation;
Gutta-percha area ratio
- MeSH:
Dental Pulp Cavity*;
Gutta-Percha*;
Root Canal Obturation
- From:Journal of Korean Academy of Conservative Dentistry
2005;30(2):79-85
- CountryRepublic of Korea
- Language:English
-
Abstract:
The purpose of this study was to evaluate the obturation efficiency of a non-standardized gutta-percha cone in curved root canals prepared with 0.06 taper nickel-titanium instruments. Sixty simulated curved root canals in clear resin blocks were prepared with crown-down technique using 0.06 taper rotary ProTaper(TM) and ProFile (Dentsply-Maillefer) until apical canal was size 30. Root canals were randomly divided into 4 groups of 15 blocks and obturated with cold-laterally compacted gutta-percha technique by using either a non-standardized size medium gutta-percha cone or an ISO-standardized size 30 one as a master cone. Gutta-percha area ratio were calculated at apical levels of 1, 3, and 5 mm using AutoCAD 2000 after cross-sectioning, and the data were analyzed with one-way and two-way ANOVAs and Duncan's multiple range test. Non-standardized size medium cone groups showed significantly higher gutta-percha area ratio than standardized cone groups at all apical levels (p < 0.01). Non-standardized cone groups used significantly less accessory cones than standardized cone groups (p < 0.01).
