title: Butt joint versus bevelled gold margin in metalceramic crowns.
abstract: The merits of a butt joint versus a bevelled margin are reexamined. It is shown that only acute bevels are effective in reducing the marginal diffusion of plaque acid. However, acute gold bevels may give rise to other major problems in avoiding distortion of the gold during firing of the procelain, and finishing and cementing the crown.
mesh_terms: D002484:Cementation; D003442:Crowns; D001840:Dental Bonding; D003737:Dental Cavity Preparation; D003776:Dental Porcelain; D003779:Denture Design; D003781:Denture Retention; D006047:Gold Alloys; D013499:Surface Properties
chemical_list: D006047:Gold Alloys; D003776:Dental Porcelain