Marginal adaptation of castings made with dual-arch and custom trays.
This study compared the marginal fit of castings made with custom acrylic trays and metal or plastic dualarch impression trays. Standard clinical and laboratory procedures were used to make 36 gold castings for a metal tipodont die. Mean marginal openings were between 25 and 28 microns in all test groups.
Davis
R
R
Department of General Practice, University of Texas Health Science Center, San Antonio 78284.
Schwartz
R
R
Hilton
T
T
D000704:Analysis of Variance; D003761:Dental Impression Technique / Q000295:instrumentation*; D003763:Dental Leakage / Q000517:prevention & control; D006801:Humans; D015203:Reproducibility of Results; D013674:Technology, Dental / Q000592:standards