Relative fit of new denture resins polymerized by heat, light and microwave energy.
This study compared in vitro the relative fit of seven denture resins polymerized by different methods to their gypsum casts. Relative fit in the molar-to-molar region of the resin bases on their stone casts was evaluated independently by five evaluators at three times (after processing, after polishing and after storage in water) and ranked using non-parametric statistics. The denture resins polymerized by microwave energy, (Acron MC), low heat, (Perform, 45 degrees C), and visible light, (Triad) fit better after polishing and after storage in water than those resins polymerized at higher temperatures (Lucitone 199, 74 degrees C and Accelar 20, Compak and Permacryl 20, 100 degrees C). The traditional heat-polymerized resin (Lucitone) had an average fit after storage in water.
Smith
L T
LT
Dental Branch, University of Texas Health Science Center at Houston.
Powers
J M
JM
D000180:Acrylic Resins / Q000737:chemistry*; D003819:Denture Bases; D006358:Hot Temperature; D008027:Light; D008872:Microwaves; D003765:Models, Dental
D000180:Acrylic Resins