Indirect Evaluation of the Marginal Fit of Dental Castings

An accurate marginal fit of a dental casting is one of the goals of restorative dentists. Use of specific indirect techniques facilitates fabrication of the most precise castings. These techniques incorporate a series of orderly and logical steps on multiple analogues to eliminate potential errors. Evaluating precisional fit of the casting requires the coordination of psychomotor skills and prescribed materials usage. Evaluation of marginal fit must be accomplished indirectly. It is easier and more precise to appraise marginal accuracy on an analogue than intraorally. Training increases one's ability to evaluate margins. Currently there is an increased demand for casting accuracy to restore endosseous implants. The immobility of dental implants imposes a high order of precision on both indirect techniques and indirect evaluation to achieve success. The inability to achieve this level of precision can result in implant and/or prosthesis failure.