Evaluation of Dentin Defect Formation during Retreatment with Hand and Rotary Instruments: A Micro-CT Study

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center" colspan="3">After instrumentation</td><td class="align_center" colspan="3">Post-GP removal</td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center">Craze line</td><td class="align_center">Partial crack</td><td class="align_center">Fracture</td><td class="align_center">Craze line</td><td class="align_center">Partial crack</td><td class="align_center">Fracture</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">Group 1</td><td class="align_center">46</td><td class="align_center">1</td><td class="align_center">4</td><td class="align_center">47</td><td class="align_center">1</td><td class="align_center">4</td></tr><tr><td class="align_left">Group 2</td><td class="align_center">17</td><td class="align_center">0</td><td class="align_center">3</td><td class="align_center">17</td><td class="align_center">1</td><td class="align_center">3</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Numbers of detected after instrumentation and post-gutta-percha removal dentin defects.

Scanning

tab1

Table 1

Table 1: Evaluation of Dentin Defect Formation during Retreatment with Hand and Rotary Instruments: A Micro-CT Study 