Octacalcium phosphate-mediated cement as a root canal filling material for primary teeth

磷酸八钙（OCP）被认为是生物磷灰石晶体的前体。我们之前的研究结果表明，一种由OCP和α-TCP组成的新型CPC设置具有有利于临床使用的物理性质（OCP介导的水泥）。本研究的目的是评估ocp介导的骨水泥作为乳牙根管填充材料的效果。在本研究中，我们评估了ocp介导水泥粉末组分的粒径对硬化过程和密封能力的影响。本研究表明，起始粉粒径的减小对水泥的水解具有较强的加速作用，提高了ocp介导水泥的密封能力。

Octacalcium phosphate (OCP) is considered to be a precursor of biological apatite crystals. The results of our previous studies showed that a new CPC setting composed of OCP and α-TCP had physical properties favorable for use in the clinical setting (OCP-mediated cement). The objective of this study is to evaluate the OCP-mediated cement as a root canal filling material for primary teeth. In this study, we evaluated the effect of particle size of powder component of OCP-mediated cement on the hardening process and sealing ability. This study has indicated that the reduction of the particle size of starting powder had a strong accelerating effect in the hydrolysis of the cement and improving the sealing ability of OCP-mediated cement.