The examples of the present application disclose a method for preparing a dental composite resin material and a preparation therefrom, the method comprising (1) ethylenically unsaturated monomer, reinforcing fiber, filler, initiator, polymerization inhibition A step of weighing each of the material including the colorant and the colorant； (2) a step of mixing the measured material excluding the reinforcing fiber to obtain a composite resin monomer precursor； and (3) a weighted reinforcing fiber. Impregnating the composite resin monomer precursor for 1 to 5 hours, preferably 2 to 3 hours with an impregnation negative pressure of 0.1 MPa or less to obtain a reinforced fiber impregnated with the composite resin monomer precursor； (4) And subjecting the reinforcing fiber impregnated with the composite resin monomer precursor to a solidification treatment to obtain the dental composite resin material. The bending strength of the dental composite resin material provided by the present application is higher than 600 MPa, and its light transmittance may be higher than 40%. [Selection figure] None本願の例が開示するのは、歯科用複合樹脂材料の調製方法とそれからの調製物であって、前記方法は、（１）エチレン性不飽和モノマー、強化繊維、充填剤、開始剤、重合阻害剤、および着色剤を含む素材の各々を計量する工程と、（２）前記強化繊維を除く計量済素材を混合して、複合樹脂モノマー前駆体を得る工程と、（３）計量済み強化繊維を前記複合樹脂モノマー前駆体に１～５時間、好ましくは２～３時間、０．１ＭＰａ以下の含浸負圧で含浸して、複合樹脂モノマー前駆体含浸済み強化繊維を得る工程と、（４）前記複合樹脂モノマー前駆体含浸済み強化繊維を固化処理に供して、前記歯科用複合樹脂材料を得る工程とを含む。本願によって提供される歯科用複合樹脂材料の曲げ強さは６００ＭＰａより高く、その光透過率は４０％より高くまでになる場合がある。【選択図】なし
