Color Change in Acrylic Denture Base Resin Reinforced with Wire Mesh and Glass Cloth

• Published in: Dental Materials Journal Vol. 22; no. 4; pp. 425 - 435
• Main Authors: KANIE, Takahito, ARIKAWA, Hiroyuki, FUJII, Koichi, BAN, Seiji
• Format: Journal Article
• Language: English
• Published: Japan The Japanese Society for Dental Materials and Devices 01.12.2003
• Subjects: Acrylic Resins; Analysis of Variance; Color; Color change; Colorimetry; Dentistry; Denture base resin; Denture Bases; Denture Design; Glass; Light; Materials Testing; Prosthesis Coloring; Reinforcement; Stainless Steel
• ISSN: 0287-4547; 1881-1361
• DOI: 10.4012/dmj.22.425

In this study, the L*a*b* color system as a color system and light transmittance of the denture base resin reinforced with wire mesh and glass cloth were measured, and the color difference (ΔE* ab) was calculated using L*, a* and b* values which were measured both on a white calibration plate and on a null background. The thicknesses of test specimens, which were reinforced with wire mesh and glass cloth 0.5 and 1.0mm below the surface, were 3 and 5mm. L*, a* and b* values of wire mesh reinforcing specimens decreased in comparison with the non-reinforcing specimens (p<0.05). L* values of glass cloth-reinforcing specimens increased compared with the non-reinforcing specimens (p<0.05). The glass cloth is an effective reinforcing material and an aesthetically important property of denture base resin, since wire mesh makes the resin appear darker with the background condition greatly altering the color, while glass cloth makes the resin lighter.