A procedure for design of a posterior resin-bonded prosthesis

A procedure is described that uses red and brown crayon-type pencils and graphite pencil lead with a surveyor to draw a color-coded design on a study cast before fabrication of a posterior resin-bonded prosthesis. During diagnosis and treatment planning, abutments on the study cast are analyzed for undercuts and the height of contour on each abutment tooth is marked with a graphite pencil lead. Metal retainers for the prosthesis are indicated with brown lines drawn on the abutments. Enamel surfaces requiring alteration to allow insertion of the prosthesis and provide resistance to displacement are marked in red on the study cast. The surveyed color-coded study cast can be used as a reference guide by both the clinician and the laboratory technician during fabrication of the posterior resin-bonded prosthesis.