This <i>W3C-unspecified</i> <a href="https://en.wikipedia.org/wiki/Vector_images" class="extiw" title="w:Vector images">vector image</a> was created with <a href="https://en.wikipedia.org/wiki/Inkscape" class="extiw" title="w:Inkscape">Inkscape</a> .
<a href="https://en.wikipedia.org/wiki/user:DRosenbach" class="extiw" title="wikipedia:user:DRosenbach">DRosenbach</a>
<span class="int-own-work" lang="en">Own work</span>, from Intracoronal reinforcement and coronal coverage: A study of endodontically treated teeth, 1984, <a rel="nofollow" class="external free" href="https://doi.org/10.1016/0022-3913(84)90376-7">https://doi.org/10.1016/0022-3913(84)90376-7</a>