A survey of experience-based preference of Nickel-Titanium rotary files and incidence of fracture among general dentists.
10.5395/rde.2012.37.4.201
- Author:
Woocheol LEE
1
;
Minju SONG
;
Euiseong KIM
;
Hyojin LEE
;
Hyeon Cheol KIM
Author Information
1. Department of Conservative Dentistry, Seoul National University School of Dentistry and Dental Research Institute, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Crown-down technique;
Fracture incidence;
Hybrid technique;
Nickel-titanium rotary file;
Preference
- MeSH:
Chimera;
Surveys and Questionnaires;
Dentists;
Electronic Mail;
Humans;
Incidence;
Korea
- From:Restorative Dentistry & Endodontics
2012;37(4):201-206
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVES: The purpose was to investigate the preference and usage technique of NiTi rotary instruments and to retrieve data on the frequency of re-use and the estimated incidence of file separation in the clinical practice among general dentists. MATERIALS AND METHODS: A survey was disseminated via e-mail and on-site to 673 general dentists. The correlation between the operator's experience or preferred technique and frequency of re-use or incidence of file fracture was assessed. RESULTS: A total of 348 dentists (51.7%) responded. The most frequently used NiTi instruments was ProFile (39.8%) followed by ProTaper. The most preferred preparation technique was crown-down (44.6%). 54.3% of the respondents re-used NiTi files more than 10 times. There was a significant correlation between experience with NiTi files and the number of reuses (p = 0.0025). 54.6% of the respondents estimated experiencing file separation less than 5 times per year. The frequency of separation was significantly correlated with the instrumentation technique (p = 0.0003). CONCLUSIONS: A large number of general dentists in Korea prefer to re-use NiTi rotary files. As their experience with NiTi files increased, the number of re-uses increased, while the frequency of breakage decreased. Operators who adopt the hybrid technique showed less tendency of separation even with the increased number of re-use.
