Physical properties and color stability of injection-molded thermoplastic denture base resins
송소연, 김경수, 이정열, 신상완,
소속 상세정보
송소연 ( Song So-Yeon ) - Korea University Graduate School Department of Biomedical Sciences
김경수 ( Kim Kyoung-Soo ) - Korea University Graduate School Department of Medicine
이정열 ( Lee Jeong-Yol ) - Korea University Guro Hospital Department of Prosthodontics
신상완 ( Shin Sang-Wan ) - Korea University Institute for Clinical Dental Research
Abstract
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.
키워드
Thermoplastic denture base resins; Nonmetallic clasp dentures; Denture base polymers; Color stability; Flexural strength
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