Curable species include, for example, addition-polymerizable monomers and oligomers and addition-crosslinkable polymers such as, free-radically polymerizable or crosslinkable ethylenically-unsaturated species (e.g., acrylates, methacrylates, and certain vinyl compounds such as styrenes), as well as cationically-polymerizable monomers and oligomers and cationically-crosslinkable polymers (which spe