Repair of porcelain/metal restoration with resin bonded overcasting. 1992

M Wood, and L J Litkowski, and V P Thompson, and T Church
Baltimore College of Dental Surgery.

Porcelain occasionally fractures from ceramometal fixed partial dentures following final cementation. Repair of these porcelain fractures can be a challenging task. When the problem occurs on anterior teeth, it is especially difficult because the repair must not only be durable, but esthetically pleasing as well. Although composite resins can be used for some repairs, it is often difficult to match the color and texture to the surrounding intact porcelain. In addition, the bonding between the resin and porcelain is susceptible to margin leakage, which may ultimately cause an esthetic failure. Techniques involving a cemented porcelain-fused-to-metal overcasting have often been successful in restoring the fixed partial denture to form and function. Although the esthetic result of a porcelain/metal overcasting can be quite successful, retention of the overcasting is sometimes poor. The compromised retention and resistance form is due to lack of interproximal walls on the underlying fractured unit. To improve the retention of the overcasting, the following technique of tin plating the overcasting and fractured unit prior to cementing with a composite resin cement is presented.

UI MeSH Term Description Entries
D010710 Phosphates Inorganic salts of phosphoric acid. Inorganic Phosphate,Phosphates, Inorganic,Inorganic Phosphates,Orthophosphate,Phosphate,Phosphate, Inorganic
D012117 Resins, Synthetic Polymers of high molecular weight which at some stage are capable of being molded and then harden to form useful components. Dental Resins,Dental Resin,Resin, Dental,Resin, Synthetic,Resins, Dental,Synthetic Resin,Synthetic Resins
D001840 Dental Bonding An adhesion procedure for orthodontic attachments, such as plastic DENTAL CROWNS. This process usually includes the application of an adhesive material (DENTAL CEMENTS) and letting it harden in-place by light or chemical curing. Bonding, Dental,Cure of Orthodontic Adhesives,Curing, Dental Cement,Dental Cement Curing,Orthodontic Adhesives Cure
D003735 Dental Casting Technique The process of producing a form or impression made of metal or plaster using a mold. Casting Technic, Dental,Casting Technics, Dental,Casting Technique, Dental,Casting Techniques, Dental,Dental Casting Technic,Dental Casting Technics,Dental Casting Techniques,Technic, Dental Casting,Technics, Dental Casting,Technique, Dental Casting,Techniques, Dental Casting
D003780 Denture Repair The process of reuniting or replacing broken or worn parts of a denture. Denture Repairs,Repair, Denture,Repairs, Denture
D003830 Denture, Partial, Fixed A partial denture attached to prepared natural teeth, roots, or implants by cementation. Fixed Bridge,Fixed Partial Denture,Pontic,Bridge, Fixed,Bridges, Fixed,Denture, Fixed Partial,Dentures, Fixed Partial,Fixed Bridges,Fixed Partial Dentures,Partial Denture, Fixed,Partial Dentures, Fixed,Pontics
D004595 Electroplating Coating with a metal or alloy by electrolysis. Electrodeposition,Metal Plating,Plating, Metal
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014001 Tin A trace element that is required in bone formation. It has the atomic symbol Sn, atomic number 50, and atomic weight 118.71. Stannum
D016876 Metal Ceramic Alloys The fusion of ceramics (porcelain) to an alloy of two or more metals for use in restorative and prosthodontic dentistry. Examples of metal alloys employed include cobalt-chromium, gold-palladium, gold-platinum-palladium, and nickel-based alloys. Metal Ceramic Restorations,Metallo-Ceramic Alloys,Porcelain-Metal Alloys,Metal Ceramic Alloy,Metallo-Ceramic Alloy,Metalloceramic Alloy,Metalloceramic Alloys,Alloy, Metal Ceramic,Alloy, Metallo-Ceramic,Alloy, Metalloceramic,Alloys, Metal Ceramic,Alloys, Metallo-Ceramic,Alloys, Metalloceramic,Alloys, Porcelain-Metal,Metallo Ceramic Alloy,Metallo Ceramic Alloys,Porcelain Metal Alloys,Restorations, Metal Ceramic

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