| http://www.w3.org/ns/prov#value | - A periodontium-regenerating material consisting essentially of bio-degradable/absorbable high-molecular weight material of lactide/??-caprolactone copolymer or a lactide/glycolide copolymer which is used for the regenerative treatment of the periodontium, said copolymer being in a form of a porous film or a sheet and having a weight-average molecular weight in the range of 40,000 to 500,000, a mol
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