Mirtchi A A, Lemaître J, Munting E
Unité de Chimie des Interfaces, Université Catholique de Louvain, Louvain-la-Neuve, Belgium.
Biomaterials. 1991 Jul;12(5):505-10. doi: 10.1016/0142-9612(91)90150-9.
Increasing amounts of fluoride ions have been found to increase the setting and hardening rates of beta-tricalcium phosphate-dicalcium phosphate dihydrate-calcite cements. Thus, fluoride-containing cements reached a diametral strength of about 1.5 MPa after 15 d, but the fluoride-free reference sample reached only 0.45 MPa. The acceleration of setting and hardening is correlated to an increased rate of hydroxyapatite formation in the cement at the expense of dicalcium phosphate dihydrate and calcite. Adding monocalcium phosphate monohydrate and fluoride to the blends resulted in a marked decrease of their setting time from about 1 h down to 8 min, without greatly affecting their final strength.
已发现，氟离子含量增加会提高β-磷酸三钙-二水磷酸二钙-方解石水泥的凝固和硬化速率。因此，含氟水泥在15天后达到了约1.5兆帕的径向强度，但无氟参比样品仅达到0.45兆帕。凝固和硬化的加速与水泥中羟基磷灰石形成速率的增加相关，代价是二水磷酸二钙和方解石。向混合物中添加一水磷酸二氢钙和氟会使其凝固时间从约1小时显著缩短至8分钟，而对其最终强度影响不大。
