The use of casting investments for soldering gold implant bars: a pilot study.
The use of gypsum- and phosphate-bonded casting investments for soldering gold implant bars was investigated. Eighteen gold implant bars were sectioned and divided into two groups of nine specimens each. One group of bars was invested with gypsum-bonded investment and the other group invested with phosphate-bonded investment. The accuracy of fit of each group was measured at the gold cylinder-abutment interface in microns using a stereomicroscope. The use of gypsum-bonded investment resulted in a more accurate fit as compared with phosphate-bonded investment.
Zoidis
P C
PC
Department of Prosthodontics, Temple University School of Dentistry, Philadelphia, PA 19140-5096, USA.
Thoupos
G A
GA
Karellos
N D
ND
Winkler
S
S
D000704:Analysis of Variance; D002133:Calcium Sulfate; D003734:Dental Casting Investment; D017268:Dental Prosthesis Retention / Q000295:instrumentation*; D019094:Dental Prosthesis, Implant-Supported / Q000295:instrumentation*; D012994:Dental Soldering / Q000379:methods*; D006047:Gold Alloys; D010710:Phosphates; D010865:Pilot Projects; D017755:Prosthesis Fitting
D003734:Dental Casting Investment; D006047:Gold Alloys; D010710:Phosphates; D002133:Calcium Sulfate