Long-Term Fluoride Exchanges at Restoration Surfaces and Effects on Surface Mechanical Properties

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td align="left">Composite material </td><td align="center">Fluoride ion rerelease following recharge (<i>μ</i>g/cm<sup>2</sup>)</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td align="left">Beautifil II</td><td align="center">31.7</td></tr><tr><td align="left">Gradia Direct X</td><td align="center">11.1</td></tr><tr><td align="left">Tetric EvoCeram</td><td align="center">6.0</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

The fluoride ion rerelease by each composite after fluoride recharge (10 minutes, 5000 ppm) at 18 months of aging.

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Table 3

Table 3: Long-Term Fluoride Exchanges at Restoration Surfaces and Effects on Surface Mechanical Properties 