Oligomers containing pendant isocyanategroups were synthesized from variousvinyl monomers, m-isopropenyldimethylbenzylisocyanate (TMI), and 2-isocyanatoethyl meth-acrylate (IEM). The 1iquids were characterizedby their refractive indices,infrared spectra,andpercentage of isocyanate groups in the molecule.Bond strengths of the sodium salt of ethylene-diamine-tetraacetic acid (Na EDTA adjusted topH 7.4) and glutaraldehydetreated dentin ce-