| 摘要 |
<p>Interdental wedge suitable for use on the insertion of approximal fillings of light curing synthetic material, chemically curing material or amalgam comprises of a working part - triangle prismatic body which surface have been micro roughened and which has a ski-like end ahead. At its other end this body is connected to a prismatic like or cut pyramid like solid part - grip, which has a hole inside. The correlation between the working part section surface and that of the grip section surface is: Ssp / Swp = 4.5/7.5 where : Ssp - section of the solid part, Swp - section of the working part.</p> |
