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This Concept Map, created with IHMC CmapTools, has information related to: Metal Coping Design - copy, Features to consider when designing the metal coping for a PFM restoration Thickness of the Porcelain Veneer, Features to consider when designing the metal coping for a PFM restoration Placement of occlusal and proximal contacts, desirable thickness is 1.00-1.5 mm, areas with deficiencies caused by caries, tooth fracture, or previous restoration in the occlusal surface, Thickness of the Porcelain Veneer the areas with deficiencies caused by caries, tooth fracture, or previous restoration, Features to consider when designing the metal coping for a PFM restoration Thickness of the metal underlying and adjoining the porcelain, interproximal areas of the tooth preparation, absolute minimum thickness is 0.7 mm, Features to consider when designing the metal coping for a PFM restoration Support of the porcelain veneer, areas with deficiencies caused by caries, tooth fracture, or previous restoration in the incisal edge, tooth preparation should be compensated for with extra thickness of the coping, Features to consider when designing the metal coping for a PFM restoration Design of the Facial Margin, improperly designed pontic framework with tbick gingival extension of porcelain even if not exposed to any occlusal forces, Thickness of the Porcelain Veneer a porcelain that is relatively thin, of uniform thickness and supported by rigid metal, Features to consider when designing the metal coping for a PFM restoration Extent of the area to be veneered for porcelain, prone to premature failure because of stresses occuring in this thick bulk during the initial firing and cooling, should be kept at a minimum thickness that is still compatible with good esthetics the desirable thickness, incisal edge of the tooth preparation, tooth preparation should be blocked out in the preparation, occlusal surface of the tooth preparation