| 摘要 |
A dental filling composite material is disclosed, which contains 10-99% by weight of phosphazene of the formula: <IMAGE> in which at least one of R1 and R2 represent radicals having not less than 3 carbon atoms and being polymerizable. The filling composite material is low in polymerization shrinkage, thermal expansion coefficient and water absorption and may be quickly polymerized and cured to form a polymer of high compressive strength, flexural strength and hardness.
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