Being the dental cement composition, under existing of (i) acid the metal ion being the granular reactivity inorganic bulking agent which can exude and the composite particle which possesses the (ii) graft conversion polyacid polymer chain, method below, namely (a) (a1) the initiator type which includes the initiator particle which indicates the region which includes the radical portable possible atom or the basis as the polymerization start region And (a2) the catalyst which promotes control/the living polymerization And (a3) under existing of optional further polymerization characteristic monomer, polymerizing the free radical polymerization characteristic monomer of 1 kinds or more which contain the acidic basis which is protected optionally, to graft the process which forms the composite particle which possesses the polyacid polymer chain which is protected optionally is converted The dental cement composition which includes with the composite particle which possesses the graft conversion polyacid polymer chain which can by the formation method of the composite particle which and (b) possesses the process which deviation from protects the acidic basis which is protected optionally, possesses the graft conversion polyacid polymer chain.歯科用セメント組成物であって、(i)酸の存在下で金属イオンを浸出することができる粒状反応性無機充填剤と、(ii)グラフト化ポリ酸ポリマー鎖を有する複合粒子であって、以下の方法、すなわち(a)(a1)ラジカル移動可能な原子又は基を含む部位を重合開始部位として表示する開始剤粒子を含む開始剤系;及び(a2)制御/リビング重合を促進する触媒;及び(a3)任意のさらなる重合性モノマーの存在下で、任意に保護された酸性基を含有する1種以上のフリーラジカル重合性モノマーを重合して、グラフト化された任意に保護されたポリ酸ポリマー鎖を有する複合粒子を形成する工程;並びに(b)保護された酸性基を任意に脱保護する工程を有する、グラフト化ポリ酸ポリマー鎖を有する複合粒子の形成方法によって得られるグラフト化ポリ酸ポリマー鎖を有する複合粒子とを含む歯科用セメント組成物。
