Color Stability of Heat-Cured Denture Base Resins

Abstract:

Heat-cured denture base resin is an important component in removable partial dentures and complete dentures, and has been widely used in the clinic. However, during long-term use, its appearance may be affected by varying degrees of color change, affecting the appearance and longevity of the dentures. In this study we examined the color changes and water absorption and solubility of dental base resins to investigate the color stability of four types of resin materials: New Century, Heraeus, Nissin and BASIS-HI. They were soaked in artificial saliva (as control), red wine, cola, coffee and tea separately at 37°C for 1, 4 or 12 weeks. Results are presented on which the color changes of dental base resin materials were associated with different denture base resins, soak solutions and storage times. We found that most of the dental resins became darker at prolonged immersion time. Heraeus resins showed more significant changes after soaking in red wine for 12 weeks, and its water absorption and solubility values were also greater than those of the other three types of resins. The color changes of New Century, Nissin and BASIS-HI soaked in the four solutions were relatively stable. The information obtained here will help optimize maintenance of dentures and also inform choice of denture materials.

• Periodical: Advanced Materials Research (Volume 1088)
• Pages: 519-525
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1088.519
• Online since: February 2015
• Authors: Hua Li Huang, Dan Feng, Hai Huan Gong, Ai Yang Song, Song Zhu*
• Keywords: Color Stability, Denture Base Resin, Soak Solution, Storage Time, Water Absorption, Water Solubility

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