| http://www.w3.org/ns/prov#value | - Suitable fillers include bone chips, tricalcium phosphate, hydroxylapatite (???HA???), small intestine submucosa (???SIS??? as described in U.S. Pat. Nos. 4,902,508, issued Feb. 20, 1990, and 4,956,178, issued Sep. 11, 1990), bioglass granules, synthetic polymers, calcium carbonate, calcium sulfate and collagen, or other extracellular matrix compound, or various mixtures thereof.
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