Color stability, water sorption and cytotoxicity of thermoplastic acrylic resin for non metal clasp denture
Jang Dae-Eun, 이지영, 장현선, 이장재, 손미경,
소속 상세정보
( Jang Dae-Eun ) - Chosun University School of Dentistry Department of Prosthodontics
이지영 ( Lee Ji-Young ) - Chosun University School of Dentistry Department of Prosthodontics
장현선 ( Jang Hyun-Seon ) - Chosun University School of Dentistry Department of Oral Pathology
이장재 ( Lee Jang-Jae ) - Chosun University College of Natural Sciences Department of Computer Science and Statistics
손미경 ( Son Mee-Kyung ) - Chosun University School of Dentistry Department of Prosthodontics
KMID : 1023820150070040278
Abstract
PURPOSE : The aim of this study was to compare the color stability, water sorption and cytotoxicity of thermoplastic acrylic resin for the non-metal clasp dentures to those of thermoplastic polyamide and conventional heat-polymerized denture base resins.
MATERIALS AND METHODS : Three types of denture base resin, which are conventional heat-polymerized acrylic resin (Paladent 20), thermoplastic polyamide resin (Bio Tone), thermoplastic acrylic resin (Acrytone) were used as materials for this study. One hundred five specimens were fabricated. For the color stability test, specimens were immersed in the coffee and green tee for 1 and 8 weeks. Color change was measured by spectrometer. Water sorption was tested after 1 and 8 weeks immersion in the water. For the test of cytotoxicity, cell viability assay was measured and cell attachment was analyzed by FE-SEM.
RESULTS : All types of denture base resin showed color changes after 1 and 8 weeks immersion. However, there was no significant difference between denture base resins. All specimens showed significant color changes in the coffee than green tee. In water sorption test, thermoplastic acrylic resin showed lower values than conventional heat-polymerized acrylic resin and thermoplastic polyamide resin. Three types of denture base showed low cytotoxicity in cell viability assay. Thermoplastic acrylic resin showed the similar cell attachment but more stable attachment than conventional heat-polymerized acrylic resin.
CONCLUSION : Thermoplastic acrylic resin for the non-metal clasp denture showed acceptable color stability, water sorption and cytotoxicity. To verify the long stability in the mouth, additional in vitro studies are needed.
키워드
Denture base; Color stability; Water sorption; Cytotoxicity
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