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This Concept Map, created with IHMC CmapTools, has information related to: Metal Coping Designn, Features to consider when designing the metal coping for a PFM restoration Extent of the area to be veneered for porcelain, minimize destruction of tooth structure for facial shoulder, higher yield strength may be as thin as 0.2 mm, Design of the Facial Margin Further modification by halting metal extension, Fabrication involves either platinum foil matrix supporting the porcelain during firing, An outer junction of porcelain to metal that is at a right angle (90 degrees) to avoid subsequent fracture of the porcelain, Maxillary Posterior Teeth Advantage for recommended design more resistance to fracture, Mandibular Posterior Teeth classified into First premolar, Features to consider when designing the metal coping for a PFM restoration Thickness of the metal underlying and adjoining the porcelain, Second premolar usual required design distal half can be unveneered, Thickness of the metal underlying and adjoining the porcelain may vary, Molars if patient has esthetic demands occlusal surfaces can be covered with porcelain, Fabrication involves either refractory die supports the porcelain margin during firing, contoured so that the overlying veneer will be subject to compressive, axial wall in order to allow light trnansmission into the tooth rooth adjacent to the margin, Porcelain-Metal Junction Line is Placed 1.0 mm from occlusal contacts at the position of maximal intercuspation, metal well away from Porcelain-Metal Junction Line, Occlusal Contacts placed on unveneered metal surfaces, 1.0 to 2.0 mm wide purpose minimize destruction of tooth structure, Extent of the area to be veneered for porcelain Metal Collar Width facial surface