The intracrevicular restorative margin, the biologic width, and the maintenance of the gingival margin.
D003442:Crowns; D003779:Denture Design; D005881:Gingiva / Q000033:anatomy & histology*; D005882:Gingival Diseases / Q000517:prevention & control*; D006801:Humans; D013499:Surface Properties; D014076:Tooth Diseases / Q000628:therapy