Dental material and method

摘要

A dental material composed of hydrophilic polycaprolactone formed by the process of exposing a hydrophobic caprolactone to ionizing irradiation from a radiation source selected from the group consisting of an Electron Acceleration (E beam), Gamma II, Cobolt, X-ray or a source of UV radiation to form a cross linked polycaprolactone composition consisting of two distinct phases one of which is soluble and the other non-soluble, and adjusting the duration of ionizing radiation and/or the intensity of the radiation to cause the concentration of the soluble phase to be above at least about 65% by weight of the cured polymeric composition whereby the hydrophobic caprolactone becomes hydrophilic.

主权项

1. A dental material having a hydrophilic surface comprising a cross linked caprolactone polymeric material and barium sulfate with the dental material formed by the process comprising exposing a hydrophobic caprolactone monomer or hydrophobic polycaprolactone to a source of ionizing irradiation selected from the group consisting of an Electron Acceleration (E beam), Gamma II, Cobolt, X-ray or a source of UV radiation until the unirradiated hydrophobic caprolactone or unirradiated hydrophobic polycaprolactone is cross linked into a solid polycaprolactone polymeric material consisting of a soluble component part and an insoluble component part with the insoluble component part being in the form of a gel fraction % of soluble to insoluble parts, adjusting the duration of ionizing radiation and/or the intensity of the radiation until the concentration of the soluble component part in percentage part is above at least about 65% by weight of the total polycaprolactone polymeric material and with the irradiated the polycaprolactone polymeric material possessing a hydrophilic surface, heating the polycaprolactone polymeric material at a temperature up to its melting temperature and incorporating barium sulfate to form the dental material.