Abstract
Two of the main disadvantages of posterior porcelain-fused-to-metal prosthesis are gingival impingement due to the location of the solder joints, and porcelain fracture. The standard design of copings has been modified to provide high proximal connecting struts which permit the placement of the solder joints at the occlusal surface. Rigid lingual shoulders of the copings add to the rigidity of the metal substructure which effectively eliminates the hazard of porcelain fracture or crazing. A step-by-step procedure was described which facilitates the clinical application of the new coping design.
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