Concerning teeth (6)
I believe the answer is:
dental
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">concerning teeth</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for dental that I've seen before include "Relating to teeth" , "Pertaining to teeth" , "Concerned with teeth" , "sort of surgeon" , "concerned with choppers" .)