Okazaki M
Department of Dental Technology, Osaka University Faculty of Dentistry, Japan.
Biomaterials. 1995 Jun;16(9):703-7. doi: 10.1016/0142-9612(95)99698-l.
Mg-containing fluoridated hydroxyapatites (Mg-MgFAp and MgF-MgAp) were synthesized heterogeneously with two different modes of fluoride supply. The expanded (300) reflections of the X-ray diffraction of both apatites were broader than and different from those of the mechanical mixture of the homogeneous apatites (MgAp and MgFAp). Scanning electron microscopy (SEM) showed that the crystal size and shape of Mg-MgFAp and MgF-MgAp were different. Energy dispersive spectroscopy (EDS) indicated that the fluoride intensity of Mg-MgFAp synthesized with the fluoride supply in the latter half of the experimental period was higher than that of MgF-MgAp. The apparent solubility of Mg-MgFAp was lower than that of MgF-MgAp. These results suggested that two different types of Mg-containing fluoridated hydroxyapatites might be formed: surface fluoride-rich apatites (Mg-MgFAp) and inner fluoride-rich apatites (MgF-MgAp).
含镁的氟化羟基磷灰石（Mg-MgFAp和MgF-MgAp）通过两种不同的氟供应模式非均相合成。两种磷灰石的X射线衍射扩展（300）反射比均相磷灰石（MgAp和MgFAp）的机械混合物更宽且不同。扫描电子显微镜（SEM）显示Mg-MgFAp和MgF-MgAp的晶体尺寸和形状不同。能量色散光谱（EDS）表明，在实验后期通过氟供应合成的Mg-MgFAp的氟强度高于MgF-MgAp。Mg-MgFAp的表观溶解度低于MgF-MgAp。这些结果表明可能形成两种不同类型的含镁氟化羟基磷灰石：表面富氟磷灰石（Mg-MgFAp）和内部富氟磷灰石（MgF-MgAp）。
