Micro-computed tomographic evaluation of dentinal defects after root canal preparation with hyflex edm and vortex blue rotary systems

• Jyothi Mandava ^[1] ; Rajiv-Kumar Yelisela ^[2] ; Sampath-Kumar Arikatla ^[2] ; Ravi-Chandra Ravi ^[3]
  1. [1] Professor & Head of the department, MDS in Conservative Dentistry and Endodontics). Gitam Dental College and Hospital; Visakapatnam
  2. [2] Senior lecturer, MDS in Conservative Dentistry and Endodontics). Gitam Dental College and Hospital; Visakapatnam
  3. [3] Associate Professor, MDS in Conservative Dentistry and Endodontics). Gitam Dental College and Hospital; Visakapatnam

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• Localización: Journal of Clinical and Experimental Dentistry, ISSN-e 1989-5488, Vol. 10, Nº. 9 (September ), 2018, págs. 844-851
• Idioma: inglés
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• Resumen

  • To evaluate the incidence of dentinal microcracks formation after root canal shaping procedures with HyFlex EDM and Vortex Blue rotary systems comparing with that of hand instrumentation using micro-computed tomography.

    Mandibular first molar teeth (n=60) having 50 to 200mesial root curvature were scanned using high resolution micro-CT imaging before root canal preparation to identify the presence of dentinal defects. Post-instrumentation cross-sectional images were taken and increased number and type of root defects were assessed and recorded. The data was statistically analysed by using chi-square test and McNemar’s test at a significance level of 5%.

    HyFlex EDM has shown greater increase in post instrumentation dentinal defects. Both rotary systems exhibited increased dentinal defects formation at coronal, middle regions which is statistically significant (P=0.042) when compared to apical region.

    HyFlex EDM has shown greater increase in post instrumentation dentinal defects followed by Vortex Blue rotary system and hand instrumentation resulted minimal defects.