Development of the reinforced acrylic-based hybrid denture composite resin with vinyloligosilsesquioxane(POSS)
남광우, 장명우, Chang Bok-Sook, 한동후, 심준성, 장익태, 허성주, 안정호, 정동준,
소속 상세정보
남광우 ( Nam Kwang-Woo ) - 성균관대학교 고분자공학과
장명우 ( Chang Myung-Woo ) - 네브라스카 주립대 치과보철학교실
( Chang Bok-Sook ) - 가톨릭대학교 치과학교실
한동후 ( Han Dong-Hoo ) - 연세대학교 치과대학 치과보철학교실
심준성 ( Shim June-Sung ) - 연세대학교 치과대학 치과보철학교실
장익태 ( Chang Ik-Tae ) - 서울대학교 치과대학 치과보철학교실
허성주 ( Heo Seong-Joo ) - 서울대학교 치과대학 치과보철학교실
안정호 ( An Jung-Ho ) - 성균관대학교 고분자공학과
정동준 ( Chung Dong-June ) - 성균관대학교 고분자공학과
KMID : 0362420000380060782
Abstract
The mainly used polymeric material for the denture is PMMA because of its cost and easiness to handle. So it was widely used material among dentists for past decades. But the acrylic-based denture materials have several common weak points such as shrinkage after curing and lack of strength. In order to solve these problems, we adapted one of hybrid system using acrylic polymer and vinyloligosilsesquioxane(POSS). POSS, which is a well known expandable monomer during polymerization process, may eventually suppress volumetric shrinkage. And the hybrid system makes it possible for the polymer to be stable in various severe conditions. Eight different kinds of samples were designed and synthesized. Each samples were characterized with dynamic mechanical analyser(DMA) to confirm their thermodynamic properties, fractured to analyze the cross-sectional morphology of the samples. And elongation, flexural and impact tests were also executed to evaluate the mechanical properties of the samples. From the results, hybrid composites had well defined crosslinked network structure compared to the widely used denture materials, and the mechanical strength improved without changing any surface condition as increment with POSS ratio in hybrid system. Fractured morphology showed homogeneous surfaces in spite of mutli component system, therefore we can conclude that the adoption of the POSS brought the reinforcement of the denture resin.
키워드
Denture resin; PMMA; Vinyloligosilsesquioxane(POSS); Hybrid system; Thermodynamic property; Mechanical property; Shringkage suppression
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