A Clinical Comparison of Failure Rates of Metallic and Ceramic Brackets: A Twelve-Month Study

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Bracket type</td><td class="align_center">Bonded, <i>N</i></td><td class="align_center">Failures after 6 months, <i>N</i></td><td class="align_center">Failures after 12 months, <i>N</i></td><td class="align_center">Failures after 12 months, %</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">Metallic</td><td class="align_center">195</td><td class="align_center">12</td><td class="align_center">14</td><td class="align_center">7.2</td></tr><tr><td class="align_left">Ceramic</td><td class="align_center">186</td><td class="align_center">2</td><td class="align_center">2</td><td class="align_center">1.1</td></tr><tr><td class="align_left">Total</td><td class="align_center">381</td><td class="align_center">14</td><td class="align_center">16</td><td class="align_center">4.2</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Number and percentage of failed brackets.</div>

BioMed Research International

tab2

Table 2

Table 2: A Clinical Comparison of Failure Rates of Metallic and Ceramic Brackets: A Twelve-Month Study 