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KMID : 1034420140390010007
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Restorative Dentistry & Endodontics
2014 Volume.39 No. 1 p.7 ~ p.11
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A comparison of dimensional standard of several nickel-titanium rotary files
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Kim Ki-Won
Cho Kyung-Mo
Park Se-Hee
Choi Ki-Yeol
Karabucak Bekir
Kim Jin-Woo
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Abstract
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Objectives: The aim of this study was to compare the dimensional standard of several nickel-titanium (Ni-Ti) rotary files and verify the size conformity.
Materials and Methods: ProFile (Dentsply Maillefer), RaCe (FKG Dentaire), and TF file (SybronEndo) #25 with a 0.04 and 0.06 taper were investigated, with 10 in each group for a total of 60 files. Digital images of Ni-Ti files were captured under light microscope (SZX16, Olympus) at 32×. Taper and diameter at D1 to D16 of each files were calculated digitally with AnalySIS TS Materials (OLYMPUS Soft Imaging Solutions). Differences in taper, the diameter of each level (D1 to D16) at 1 mm interval from (ANSI/ADA) specification No. 101 were statistically analyzed using one-way ANOVA and Scheffe’s post-hoc test at 95% confidence level.
Results: TF was the only group not conform to the nominal taper in both tapers (p < 0.05). All groups except 0.06 taper ProFile showed significant difference from the nominal diameter (p < 0.05).
Conclusions: Actual size of Ni-Ti file, especially TF, was different from the manufacturer’s statements.
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KEYWORD
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Diameter, Ni-Ti rotary files, Size verification, Taper, TF
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