PURPOSE: A composition of a dual cure type abutment construction material is provided to ensure low polymerization contraction percentage and to improve mechanical property. CONSTITUTION: A composition of a dual cure type abutment construction material contains: 100 weight parts of catalyst compositions containing organic mixture, hydroxyethyl methacrylate as a diluents, barium glass as a filling material, benzoyl peroxide as a self-polymerization inhibitor, photo-sensitizer, and anti-oxidant； and 100 weight parts of a base composition containing organic mixture, hydroxyethyl methacrylate, barium glass as a filling material, 2-hydroxyethyl-para-toluene as a self-polymerization initiator, 4-(N,N-dimethyl amino)benzoate as a initiator and an antioxidant.본 발명은 이원중합형 지대치 축조재 조성물에 관한 것으로, 더욱 상세하게는 유기혼합물, 희석제인 히드록시에틸메타아크릴레이트, 충전제인 바륨유리, 자가중합 개시제인 벤조일퍼옥사이드, 광증감제 및 산화방지제로 이루어진 촉매조성물 100 중량부에 유기혼합물, 희석제인 히드록시에틸메타아크릴레이트, 충전제인 바륨유리, 자가중합 개시제인 2-히드록시에틸-파라-톨루이딘, 개시제인 4-(N,N-디메틸아미노)벤조에이트 및 산화방지제로 이루어진 기재조성물 100 중량부를 혼합하여 이루어진다.
