Therefore , the rotary NiTi Hero 642 and K3 files demonstrated comparable shaping abilities and maintenance of working length
The aim of the present study was to compare the root canal preparation ability of rotary nickel-titanium ( NiTi ) Hero 642 and K3 files in curved m and ibular or maxillary molars .
Comparison of removed dentin thickness with hand and rotary instruments
INTRODUCTION : The aim of this study was to evaluate the amount of dentine removed after canal preparation using stainless steel ( SS ) h and instruments or rotary ProFile instruments . MATERIAL S AND METHODS : Thirty-six extracted human teeth with root canal curvatures less than 30º were embedded in clear polyester resin . The roots were cut horizontally at apical 2 , 4 and 7 mm . Dentin thickness was measured at each section and the sections were accurately reassembled using a muffle . Root canals were r and omly prepared by SS h and instruments or rotary ProFile instruments . Root sections were again separated , and the remaining dentin thickness was measured . Mann-Whitney U and t tests were performed for analytic comparison of the results . RESULTS : The thickness of removed dentin was significantly different between the two used methods ( P<0.05 ) . Significantly greater amounts of dentin was removed mesially in all sections in h and instrumentation group ( P<0.001 ) . CONCLUSION : ProFile rotary instrumentation prepares root canals with a greater conservation of tooth structure
Therefore , the rotary NiTi Hero 642 and K3 files demonstrated comparable shaping abilities and maintenance of working length
The aim of the present study was to compare the root canal preparation ability of rotary nickel-titanium ( NiTi ) Hero 642 and K3 files in curved m and ibular or maxillary molars .