Curing performance of visible-light-cured dental resins due to a selectively-filtered visible-light unit

The spectral distributions of a visible-light curing unit with selectively limited-filters were measured. The results showed that the activation energy for polymerization in an unfilled resin with dimethyl-p-toluidine as a reducing agent of tertiary aromatic amine was lower than that in the other unfilled resins and had a larger curing efficiency than the unfilled resins with aliphatic tertiary amines such as dimethylaminoethyl methacrylate and diethylaminoethyl methacrylate and also ketone. The latter amine-containing resins exhibited a larger activation energy compared to the former aromatic tertiary amine-containing resin.