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KMID : 0362320090340030232
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Journal of Korean Academy of Operative Dentistry
2009 Volume.34 No. 3 p.232 ~ p.239
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EFFECTS OF ANTICURVATURE FILING ON DANGER ZONE WIDTH IN CURVED ROOT CANALS
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Kim Eui-Seong
Kim Hyun-Jung
Seo Deog-Gyu
Roh Byoung-Duck
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Abstract
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The aim of this study was to compare the effects of anti curvature 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 C06 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 level between group 1 and 2, level between group 1 and 3 and level between group 2 and 3(n=20, P<0.05).
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KEYWORD
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anticurvature filing, stainless steel k-file, nickel-titanium ProFile
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