Comparative accuracy of fixed partial dentures made as one-piece castings or joined by solder.
Four-unit fixed partial dentures were fabricated as a one-piece casting or as two-piece castings joined by soldering prior to the addition of porcelain. The accuracy of the two techniques was compared and evaluated using an anatomic cast-metal master model. All procedures, including SEM measurements, were performed directly on the master model. The cast one-piece units had smaller vertical marginal openings than did the soldered units. The rigid nature of the abutments evokes the problems occurring with osseointegrated implants.
Sarfati
E
E
School of Dentistry, Paris VII.
Harter
J C
JC
D000704:Analysis of Variance; D003735:Dental Casting Technique; D012994:Dental Soldering; D003779:Denture Design / Q000379:methods*; D003830:Denture, Partial, Fixed; D008855:Microscopy, Electron, Scanning; D003765:Models, Dental; D015203:Reproducibility of Results; D013499:Surface Properties