OWN - Quintessenz Verlags-GmbH CI - Copyright Quintessenz Verlags-GmbH OCI - Copyright Quintessenz Verlags-GmbH TA - Int J Prosthodont JT - The International Journal of Prosthodontics IS - 1942-4426 (Electronic) IS - 0893-2174 (Print) IP - 5 VI - 10 PST - ppublish DP - 1997 PG - 434-439 LA - en TI - Fatigue Life of a Nd:YAG Laser-Welded Metal Ceramic Alloy FAU - Lee AU - Lee FAU - Nicholls AU - Nicholls FAU - Butson AU - Butson FAU - Daly AU - Daly CN - AB - Fifteen laser-welded Olympia alloy samples were divided into three gorups of five samples each, with different gap distances between the welded halves. The first group was welded with a 0.0-mm gap distance. The second and third groups had Olympia shims placed in 0.3- and 1.0-mm gaps, respectively, prior to laser welding. Each of the samples was tested to failure in load fatigue at 30 Hz in a fatigue testing device using an applied stress of 35,000 psi (241.4 MPa). The means and standard deviations for the number of cyles required to produce fatigue failure for each group was 494,618 ± 118,311 cycles for the group welded with 0.0-mm gap diatance, and 242,741 ± 44,623 and 232,021 ± 55,877 cycles for the 0.3- and 1.0-mm specimens, respectively. A one-way analysis of variance shoed that the 0.0-mm gap specimens had the greatest number of cycles to failure (P AID - 848100