[Relationship between graft polymerization onto model collagen and adhesion of MMA-TBB resin to dentin. Influence of pretreatment].
A graft polymerization of MMA onto silk was carried out under several conditions and the relationship between the grafting and the bond strength to dentin was compared in the case of a MMA-TBB resin. Phosphoric acid, EDTA 5-0 and EDTA 3-2 pretreatments to silk decreased the degree of grafting. On the other hand, 10-3 pretreatment increased it. The conformation of silk peptides was changed by the pretreatments and it was responsible for the diffusion of MMA and sites of grafting. Ferric ion absorbed on the silk enhanced the graft polymerization of MMA. Pretreatment which gave higher grafting onto silk did not always promote the bond strength to the dentin pretreated by the same pretreatments. We concluded that the graft polymerization of MMA on collagen was not necessary for the adhesion of resin to dentin.
Yamamoto
T
T
Nakabayashi
N
N
D003094:Collagen; D001840:Dental Bonding; D003804:Dentin; D008768:Methylmethacrylates
D008768:Methylmethacrylates; D003094:Collagen