part of part of in taxon adjacent to adjacent to Vertebrata <vertebrates> sulcus mouth calcareous tooth gingiva gingival groove https://upload.wikimedia.org/wikipedia/commons/5/5e/Gingival_sulcus.PNG FMA:74580 SCTID:245753001 Wikipedia:Gingival_sulcus gingival sulcus NCIT:C114645 UBERON:0008805 sulcus gingivalis tooth-gingiva interface The gingival sulcus is an area of potential space between a tooth and the surrounding gingival tissue and is lined by sulcular epithelium. The depth of the sulcus (Latin for groove) is bounded by two entities: apically by the gingival fibers of the connective tissue attachment and coronally by the free gingival margin. sulcus gingivalis