H Melike Bayram1, Emre Bayram2, Mert Ocak3, M Bora Uzuner4, Ferhat Geneci3, Hakan Hamdi Celik3. 1. Department of Endodontics, Faculty of Dentistry, Gaziosmanpaşa University, Tokat, Turkey. 2. Department of Endodontics, Faculty of Dentistry, Gaziosmanpaşa University, Tokat, Turkey. Electronic address: bayremre@yahoo.com. 3. Department of Anatomy, Faculty of Medicine, Hacettepe University, Ankara, Turkey. 4. Department of Anatomy, Faculty of Medicine, Kafkas University, Kars, Turkey.
Abstract
INTRODUCTION: The aim of the present study was to evaluate the frequency of dentinal microcracks observed after root canal preparation with HyFlex CM (Coltène/Whaledent, Altstätten, Switzerland), HyFlex EDM (Coltène/Whaledent), Vortex Blue (Dentsply Tulsa Dental Specialties, Tulsa, OK), and TRUShape (Dentsply Tulsa Dental Specialties) systems using micro-computed tomographic (micro-CT) analysis. METHODS:Forty human mandibular incisors with 1 and straight root canals were randomly assigned to 4 experimental groups (n = 10) and 1 control group for root canal preparation: group 1, HyFlex CM; group 2, HyFlex EDM; group 3, Vortex Blue; and group 4, TRUShape. The specimens were scanned using high-resolution micro-CT imaging before and after root canal preparation. Afterward, preoperative and postoperative cross-sectional images of the teeth were screened to identify the presence of dentinal defects. The number of microcracks was determined as a percentage for each group. RESULTS: Before and after canal preparation, 36,152 cross-sectional images were examined. Four thousand four hundred fifty-two (12.31%) dentinal defects were observed. No new microcracks were observed after root canal instrumentation with the tested systems. CONCLUSIONS: Root canal preparation with the HyFlex CM, HyFlex EDM, Vortex Blue, and TRUShape systems did not induce the formation of new dentinal microcracks on straight root canals of mandibular incisors.
RCT Entities:
INTRODUCTION: The aim of the present study was to evaluate the frequency of dentinal microcracks observed after root canal preparation with HyFlex CM (Coltène/Whaledent, Altstätten, Switzerland), HyFlex EDM (Coltène/Whaledent), Vortex Blue (Dentsply Tulsa Dental Specialties, Tulsa, OK), and TRUShape (Dentsply Tulsa Dental Specialties) systems using micro-computed tomographic (micro-CT) analysis. METHODS: Forty human mandibular incisors with 1 and straight root canals were randomly assigned to 4 experimental groups (n = 10) and 1 control group for root canal preparation: group 1, HyFlex CM; group 2, HyFlex EDM; group 3, Vortex Blue; and group 4, TRUShape. The specimens were scanned using high-resolution micro-CT imaging before and after root canal preparation. Afterward, preoperative and postoperative cross-sectional images of the teeth were screened to identify the presence of dentinal defects. The number of microcracks was determined as a percentage for each group. RESULTS: Before and after canal preparation, 36,152 cross-sectional images were examined. Four thousand four hundred fifty-two (12.31%) dentinal defects were observed. No new microcracks were observed after root canal instrumentation with the tested systems. CONCLUSIONS: Root canal preparation with the HyFlex CM, HyFlex EDM, Vortex Blue, and TRUShape systems did not induce the formation of new dentinal microcracks on straight root canals of mandibular incisors.
Authors: Andrea F Campello; Marília F Marceliano-Alves; José F Siqueira; Simone C Fonseca; Ricardo T Lopes; Flávio R F Alves Journal: Clin Oral Investig Date: 2021-04-26 Impact factor: 3.573
Authors: Andrea F Campello; Marília F Marceliano-Alves; José C Provenzano; Simone C Loyola; José F Siqueira; André G Machado; André L Machado; Ricardo T Lopes; Maurício M Paiva; Flávio R F Alves Journal: Scanning Date: 2021-05-15 Impact factor: 1.932