It designates that the medical material charge which is used troublesome operation without necessity, as dentistry revision and supplementation things such as the bone cement material and the denture etc which at the same time can be used safely is offered as topic. General system: CH2 C (R1) COOR2 (in R formula1 the hydrogen basis or the methyl group is displayed, in R formula2 carbon count displays the aliphatic basis 8 - 14) with the liquid component and the general system which include the chemical compound A which is displayed as the main component: CH2 C (R3) COOR4 (in R formula3 the hydrogen basis or the methyl group is displayed, in R formula4 the aliphatic basis is displayed) with chemical compound B, and the general system which are displayed: CH2 C (R5) COOR6 (in R formula5 the hydrogen basis or the methyl group is displayed, the inside R of formula6 displays the aliphatic basis) with the powder component which includes the copolymer which the chemical compound C which is displayed includes as the constitution component as the main component and, is the medical material charge which consists of.煩雑な操作が必要なく、かつ安全に使用できる骨セメント材料や、義歯などの歯科補綴物として用いられる医療用材料を提供することを課題とする。一般式:CH2C(R1)COOR2(式中R1は水素基又はメチル基を表し、式中R2は炭素数が8~14の脂肪族基を表す)で表される化合物Aを主成分として含む液体成分と、一般式:CH2C(R3)COOR4(式中R3は水素基又はメチル基を表し、式中R4は脂肪族基を表す)で表される化合物B、及び一般式:CH2C(R5)COOR6(式中R5は水素基又はメチル基を表し、式中R6は脂肪族基を表す)で表される化合物Cを構成成分として含む共重合体を主成分として含む粉末成分と、からなる医療用材料である。