title: An analysis of margin configurations for metal-ceramic crowns.
abstract: Major types of margin configurations for ceramometal crowns are reviewed. This is one of the most commonly misunderstood and poorly practiced aspects of fixed prosthodontics. The resultant underprepared teeth produce discolored gingiva and chalky crowns.
mesh_terms: D003442:Crowns; D003722:Dental Alloys; D003737:Dental Cavity Preparation / Q000379:methods; D003776:Dental Porcelain; D003779:Denture Design; D004955:Esthetics, Dental; D005881:Gingiva / Q000033:anatomy & histology; D006801:Humans; D013499:Surface Properties
chemical_list: D003722:Dental Alloys; D003776:Dental Porcelain