The oral surface of the gingiva extending from the mucogingival junction to the gingival margin. In gingival health, the coronal portion of the sulcular epithelium may also be keratinized.
A necessary dental procedure or service as determined by a dentist, to either establish or maintain a patient’s oral health. Such determinations are based on the professional diagnostic judgment of the dentist, and the standards of care that prevail in the professional community.