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Updated: Jan 28, 2026

Acrylic Resin Molding Based Head Fixation Technique in Rodents
Published on: January 12, 2016
Physical properties and color stability of injection-molded thermoplastic denture base resins
So-Yeon Song1,2, Kyoung-Soo Kim3, Jeong-Yol Lee4
1Department of Biomedical Science, Graduate School of Korea University, Seoul, Republic of Korea.
Purpose:
The purpose of this study was to compare mechanical and physical properties of injection-molded thermoplastic denture base resins.
Materials And Methods:
In this study, six commercially available products (VA; Valplast, LC; Lucitone, ST; Smiltone, ES; Estheshot-Bright, AC; Acrytone, WE; Weldenz) were selected from four types of thermoplastic denture base materials (Polyamide, Polyester, Acrylic resin and Polypropylene). The flexural properties and shore D hardness have been investigated and water sorption and solubility, and color stability have evaluated.
Results:
For the flexural modulus value, ES showed the highest value and WE showed significantly lower value than all other groups (P<.05). Most of experimental groups showed weak color stability beyond the clinically acceptable range.
Conclusion:
Within the limits of this study, thermoplastic denture base resin did not show sufficient modulus to function as a denture base. In addition, all resins showed discoloration with clinical significance, and especially polyamides showed the lowest color stability.
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