A three-part polymerizable dental composition for use in a dental restorative procedure, the composition comprising: (a) one or more polymerizable monomers each having at least one ethylenically unsaturated group, (b) one or more fillers, (c) a reducing agent, (d) an oxidizing agent, and (e) a functional chemical selected from the group consisting of a redox indicator, and an acidic compound, and a combination thereof, wherein the acidic compound is an acidic polymerizable monomer having at least one ethylenically unsaturated group and at least one acidic moiety selected from the group consisting of phosphonic acid or its derivative, and phosphoric acid or its derivative, such as phenyl methacryloxyethyl phosphate, glyceryldimethacrylate phosphate, dipentaerithritol pentaacrylate phosphate, methacryloyloxybutyl phosphate, methacryloyloxyhexyl phosphate, methacryloyloxydecyl phosphate, hydroxyethylmethacrylate phosphate, and bis(hydroxyethylmethacrylate) phosphate, and any combination thereof, wherein the reducing agent (c) and the oxidizing agent (d) form a redox initiator system, wherein the three-part polymerizable dental composition is packaged inside three barrels of three syringes or inside three barrels of a tri-barrel cartridge assembly with each barrel containing one part of the three-part composition, wherein a first part comprises (c), a second part comprises (d) and a third part comprises (e), wherein at least one of the first, second and third parts comprises (a), and wherein at least one of the first, second and third parts comprises (b), and wherein the dental restorative procedure comprises mixing the three parts to form a. mixed composition. (a) one or more polymerizable monomers each having at least one ethylenically unsaturated group, (b) one or more fillers, (c) a reducing agent, (d) an oxidizing agent, and (e) a functional chemical selected from the group consisting of a redox indicator, and an acidic compound, and a combination thereof, wherein the acidic compound is an acidic polymerizable monomer having at least one ethylenically unsaturated group and at least one acidic moiety selected from the group consisting of phosphonic acid or its derivative, and phosphoric acid or its derivative, such as phenyl methacryloxyethyl phosphate, glyceryldimethacrylate phosphate, dipentaerithritol pentaacrylate phosphate, methacryloyloxybutyl phosphate, methacryloyloxyhexyl phosphate, methacryloyloxydecyl phosphate, hydroxyethylmethacrylate phosphate, and bis(hydroxyethylmethacrylate) phosphate, and any combination thereof, wherein the reducing agent (c) and the oxidizing agent (d) form a redox initiator system, wherein the three-part polymerizable dental composition is packaged inside three barrels of three syringes or inside three barrels of a tri-barrel cartridge assembly with each barrel containing one part of the three-part composition, wherein a first part comprises (c), a second part comprises (d) and a third part comprises (e), wherein at least one of the first, second and third parts comprises (a), and wherein at least one of the first, second and third parts comprises (b), and wherein the dental restorative procedure comprises mixing the three parts to form a. mixed composition. <EOS>