Color Stability, Water Sorption And Water Solubility Of Various Artificial Acrylic Resin Teeth

Abstract

Color stability, water sorption and water solubility of the acrylic resin artificial teeth are the success keys to the appearance and mechanical properties of the denture teeth. The objective of the present study was to compare the color stability, water sorption and water solubility of 3 commercial artificial teeth: linear PMMA (NEW), resin composite (CPX) and cross-linked PMMA (ANT) and 1 color-liked heat-polymerized acrylic resin (MAJ). 80 colume-shaped specimens (9 mm/ 2 mm thickness) were fabricated for color stability test using a spectrophotometer after immersing in water or coffee solution at 1, 7, 28, 56 and 84 days. 40 colume-shape specimens ( 9 mm/ 0.5 mm thickness) were fabricated for the water sorption and water solubility tests using the weight measurement method at 1, 8, 36 and 92 days. The repeated 2-way ANOVA was calculated at the confidential level of 95. The results demonstrated the different color change depending on the type of denture teeth (MAJ>NEW>CPX>ANT) from 28 to 84 days, while the color change showed no significant difference at 1 day storage. The water sorption results demonstrated the greatest MAJ, followed by NEW, CPX and ANT respectively at 36 and 92 days, while the water solubility showed the greatest MAJ, followed by CPX, NEW and ANT respectively. This study confirmed the effect of the composition of acrylic resin denture teeth on the color stability, water sorption and water solubility. Moreover, the effect of the fabrication method as well as the type of storage solution was reported.