<http://schema.org/description>
"People often confuse the words teeth and tooth and interchange them for each other at certain places. Surprisingly, the terms do not only differ in terms of count of the teeth, but also when it comes to their usage. Of course, the clear difference is that \u2018tooth\u2019 is used"^^<http://www.w3.org/2001/XMLSchema#string>
<http://theydiffer.com/difference-between-teeth-and-tooth/>