Marginal fit of metal ceramic restorations subjected to a standardized postsoldering technique.
The fit of a fixed partial denture (FPD) is fundamental for the clinical success of a restoration. When a postsoldering procedure is needed, a high-precision laboratory technique is necessary to not affect the fit of the FPD. This article evaluates whether a standardized postsoldering technique affected the marginal fit of a 3-unit high palladium alloy FPD. One hundred and eight measurements were made of 3-unit FPDs, fabricated in a high palladium alloy (2% Au-79% Pd-10% Cu-8% Ga) and constructed on 9 tin dies in vitro. After the castings were fabricated, specimens were measured at 3 specific points per abutment (distal, labial, lingual) before and after soldering. Differences were found in the marginal opening of both copings, before soldering (49.9 microm) and after soldering (48. 3 microm). There was no significant difference in the adaptation of the copings after the soldering procedure (P<.05).
Mejia
R
R
Health Science Institute CES, Faculty of Dentistry, Medellín, Colombia. rmejiam@ces.edu.co
Tobon
S M
SM
D003442:Crowns; D000044:Dental Abutments; D018772:Dental Marginal Adaptation; D012994:Dental Soldering; D003779:Denture Design; D003830:Denture, Partial, Fixed; D006047:Gold Alloys; D006801:Humans; D016876:Metal Ceramic Alloys; D010165:Palladium; D017755:Prosthesis Fitting
D006047:Gold Alloys; D016876:Metal Ceramic Alloys; D010165:Palladium