Evaluation of ceramic margins for metal-ceramic restorations.
This study evaluated various techniques for forming ceramic margins on metal-ceramic restorations. Marginal openings were measured using a scanning electron microscope on replicas derived from elastomeric impressions. Ceramic margins formed with a platinum foil backing showed significantly better fit than those formed with direct-lift techniques. With the platinum foil method these ceramic margins displayed a marginal fit comparable to that obtained with cast metal margins.
D003442:Crowns; D003722:Dental Alloys; D003776:Dental Porcelain; D003779:Denture Design; D005069:Evaluation Studies as Topic; D003765:Models, Dental; D010984:Platinum; D013499:Surface Properties
D003722:Dental Alloys; D003776:Dental Porcelain; D010984:Platinum