Journal of Dental Research, Vol 70, 1088-1091, Copyright © 1991 by International & American Associations for Dental Research Online Journals
Importance of polymerization initiator systems and interfacial initiation of polymerization in adhesive bonding of resin to dentin
Y. Imai, Y. Kadoma, K. Kojima, T. Akimoto, K. Ikakura and T. Ohta
Institute for Medical and Dental Engineering, Tokyo Medical and Dental University, Japan.
Although various adhesive resins for dentin have been developed and used
clinically, most attention has been directed to adhesion-promoting monomers
and pre-treatment agents. The role of polymerization initiator systems in
bonding has been overlooked. The purpose of this work was to study the role
of initiators from the viewpoint of interfacial initiation of
polymerization in dentin bonding. The bond strength between dentin and
methyl methacrylate resin was significantly improved by a possible
interfacial initiation with (1) the combination of ferric chloride,
adsorbed onto dentin, and oxidized tri-n-butylborane (TBBO) and (2) the
addition of tertiary butyl peroxymaleic acid (containing a carboxylic acid
group, which has an affinity with dentin) to chemically- or light-activated
initiator systems.
