The preparation of visible-light activated polymeric dental resin (PDR) was carried out using various dimethacrylate diluents. Resin matrix was composed of 70 : 30 wt% of bisphenol A glycerolate dimethacrylate and dimethacrylate diluents, respectively, having a variety of chain length of ethylene glycol spacer group. Barium silicate with an average diameter of 1 ㎛ was used as the filler. To improve miscibility between the inorganic filler and the organic resin matrix, the filler surface was hydrophobically treated with γ-metharcryloxypropyltrimethoxysilane Cam-phorquinone and ethyl-4-dimethylaminoberuoate were adapted as the photoinitiator and the photoaccelerator, respectively Degree of conversion of PDR was investigated using FT-IR spectroscopy. In addition, diametral tensile strength polymerization shrinkage, and abrasion resistance were measured using the recommended dental specifications.

여러 종류의 dimethacrylate를 회석제로 사용하여 가시광선 광중합형의 고분자계 치과용 레진(polymeric dental resin, PDR)을 제조하고 이들의 물성을 분석하였다. Resin matrix로는 bisphenol A glycerolate dimeacrylate와 ethylene glycol을 spacer로 하는 다양한 분자쇄의 dimethacrylate계 희석제를 70:30 (wt%)으로 혼합시켜 사용하였으며, filler는 평균 입경이 1 ㎛인 barium silicate를 사용하였다. 유기질의 resin matrix와 무기질 flier와의 혼화성을 증가시키기 위해 filler 표면을 γ-methacrloxypropyltrimethoxysilane을 사용하여 소수성으로 개질시켰다. 광중합에 필요한 광개시제와 광환원제로는 camphorquinone과 ethyl-4-dimethylaminobenzoate를 각각 사용하였다. 제조된 PDR에 대하여 적외선분광분석기를 사용하여 중합전환률을 측정하였으며, 간접인장강도, 중합수축률 및 중합깊이. 마모저항도를 정해진 규격에 따라 측정하여 PDR의 치과적 물성을 고찰하였다.