title: The effect of soldering, electrowelding, and cast-to procedures on the accuracy of fit of cast implant bars.
abstract: The effect of three different connecting procedures on the accuracy of fit of cast implant bars over their supporting abutments was investigated. Thirty Hader implant bars were waxed on a master cast over two abutment analogs and cast in a type IV gold alloy. The bars were sectioned and divided into three groups of ten implant bars according to the connecting procedure that was to be followed. Group 1 bars were connected by soldering, Group 2 bars were connected by electrowelding, and Group 3 bars were connected with the cast-to procedure. The accuracy of fit of each group of bars was measured at the gold cylinder-abutment interface in microns using a stereomicroscope. The use of the cast-to procedure resulted in a more accurate fit as compared with the soldering and the electrowelding techniques.
authors.affiliation: Department of Prosthodontics, Temple University School of Dentistry, Philadelphia, PA 19140-5096, USA.
authors.forename: P C
authors.initials: PC
authors.lastname: Zoidis
authors.forename: S
authors.initials: S
authors.lastname: Winkler
authors.forename: N D
authors.initials: ND
authors.lastname: Karellos
mesh_terms: D000704:Analysis of Variance; D003735:Dental Casting Technique; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention / Q000295:instrumentation / Q000379:methods*; D019094:Dental Prosthesis, Implant-Supported / Q000295:instrumentation*; D012994:Dental Soldering; D006801:Humans; D017755:Prosthesis Fitting; D014896:Welding