Assertion: subgingival calculus | /r/CapableOf | derive its mineral
Facets:
value: in the sulcus and gum pocket
type: LOCATION
value: from the inflammatory exudate
type: OTHER
Source sentences:
text: Subgingival calculus, which derives its mineral from the inflammatory exudate in the sulcus and gum pocket, appears gray to black in color and has a flint-like consistency.