A comparison between the effect of LASER and WATER BATH on heat-cured acrylic denture base material vitro study

Abstract

Curing stage by utilizing Water Bath (W.B.) one of the stages of making a denture, in this investigation, we assess the influence of utilizing W.B. and diode laser light of frequency (1064nm) with force 50mW on samples of heat-curing acrylic (PMMA) on transverse strength of this material. We utilized a sample with dimension (8x 0.8x0.3) cm. 40 samples utilized in this investigation, 20 illuminated by laser with deferent span time of light, and the staying 20 samples prepared by regular W.B. procedure. We estimated the samples' dimension when prepared by the two procedures. From a correlation on the influence of these two procedures on the quality of the samples by utilizing t-test, we reason that the samples that illuminated with laser become more quality and when we increment the term time (p>1), while there are no concedes between the samples that rewarded with ordinary W.B. (p>0.05). We presumed that utilizing laser be more accomplishment in improving the quality of heat-curing acrylic material that utilized for denture base.