Fatih Çakıcı
Elif Bahar Çakıcı
Burak Sadık
Ali Keleş
Funda Fundaoğlu Küçükekenci
Öz
Purpose
The purpose of the present study is to assess the rate of newly formed microcracks
comparatively during root canal instrumentation by using ProTaper Next, Reciproc,
and Self-Adjusting File systems using micro-computed tomography.
Subjects and Methods
Thirty mesial roots of mandibular molars were randomly assigned to 3 experimental
groups (n = 10) as follows, ProTaper Next, Reciproc and Self-Adjusting File system.
Preoperative and postoperative scans were obtained at the isotropic resolution of
13.68 μm. Cross-section images were examined to identify the presence of newly
formed dentinal microcracks.
Results
The Self-Adjusting File and Reciproc systems caused a higher rate of new microcrack
formation than the ProTaper Next group (p < 0.001). There were also significant
differences in the new microcrack formation between Reciproc and Self-Adjusting
File groups (p < 0.001).
Conclusion
Reciproc and Self-Adjusting File systems caused a higher rate of newly formed
microcraks compared to ProTaper Next system.