A survey of experience-based preference of Nickel-Titanium rotary files and incidence of fracture among general dentists
이우철, 송민주, 김의성, 이효진, 김현철,
소속 상세정보
이우철 ( Lee Woo-Cheol ) - Seoul National University School of Dentistry and Dental Research Institute Department of Conservative Dentistry
송민주 ( Song Min-Ju ) - Yonsei University College of Dentistry Department of Conservative Dentistry
김의성 ( Kim Eui-Seong ) - Yonsei University College of Dentistry Department of Conservative Dentistry
이효진 ( Lee Hyo-Jin ) - Pusan National University Department of Statistics
김현철 ( Kim Hyeon-Cheol ) - Pusan National University School of Dentistry Department of Conservative Dentistry
KMID : 0362320120370040201
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.
키워드
Crown-down technique; Fracture incidence; Hybrid technique; Nickel-titanium rotary file; Preference
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