Taper Preparation Variability Compared to Current Taper Standards Using Computed Tomography

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td align="left">D3-D1/2</td><td align="center">Groups</td><td align="center"><span style="width: 14.9875px;"><svg height="11.3125" id="M13" style="vertical-align:-0.1092pt" version="1.1" viewbox="0 0 14.9875 11.3125" width="14.9875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td><td align="center">Mean</td><td align="center">Standard deviation</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td align="left">Taper</td><td align="center">Twisted File</td><td align="center">30</td><td align="center"><span style="width: 60.5625px;"><svg height="13.95" id="M14" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 60.5625 13.95" width="60.5625" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.012,0,0,-.012,52.9,5.525)"><path d="M471 153q-22 -15 -61 -13q-25 31 -45.5 49.5t-56.5 41.5q4 -71 28 -134q-17 -33 -42 -46q-24 12 -42 46q24 63 28 134q-36 -23 -56.5 -41.5t-45.5 -49.5q-36 -2 -61 13q0 28 19 59q65 10 130 43q-65 33 -130 43q-19 31 -19 59q22 15 61 13q25 -31 45.5 -49.5t56.5 -41.5
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</svg></span></td><td align="center">0.638077</td></tr><tr><td align="left">Taper</td><td align="center">PathFile-ProTaper</td><td align="center">30</td><td align="center"><span style="width: 60.5625px;"><svg height="13.95" id="M15" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 60.5625 13.95" width="60.5625" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td><td align="center">0.750844</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr><tr class="table-fn"><td>
              *Significant at <svg height="11.175" id="M16" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 10.9375 11.175" width="10.9375" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,0,0,-.017,.062,11.113)"><path d="M619 482q0 -69 -40.5 -119t-96 -72.5t-118.5 -26.5h-44l-70 20l-31 -151q-14 -67 0.5 -83t89.5 -22l-5 -28h-287l8 28q65 7 81.5 22t29.5 83l79 398q12 56 0.5 70.5t-78.5 20.5l7 28h255q108 0 164 -43t56 -125zM524 478q0 141 -146 141q-25 0 -47 -8q-16 -6 -20.5 -13.5
t-10.5 -39.5l-43 -241q37 -13 83 -13q67 0 125.5 45t58.5 129z" id="x1D443"></path></g>
</svg> value &lt;0.0001.<br/></td></tr></table>

Mean percent difference and standard deviation from  .08 nominal taper in the apical third among 2 systems.

International Journal of Dentistry

tab1

Table 1

Table 1: Taper Preparation Variability Compared to Current Taper Standards Using Computed Tomography 