the purpose of this program is to develop ultrasoft composite materials to be used as fillers in the fabrication of maxillofacial prostheses. the projected composite systems are elastomeric-shelled, liquid-filled microcapusles. experiments continued on the interfacial polymerization process, with spherical sealed, capsules achieved. the diamine bath has been improved and an automatic system has been developed for producing the microcapsules. the one remaining parameter to be studied is the effects of various washing techniques on the freshly made microcapsules. (author)