Assertion: tartar | /r/CapableOf | build up along the gum line
Facets:
Source sentences:
text: As tartar builds up along the gum line, it pushes the gums away from the teeth.
text: When a veterinarian performs scaling, they are removing tartar from not only the surface of the teeth, but also tartar that builds up below the gum line, which is difficult to remove at home.