摘要
The aim of this work was to produce a nanoscale fluoridated and potassium containing hydroxyapatite via sol-gel method and to observe the effect of occlusion of the dentin tubule under scanning electron microscopy. HF was selected as fluorine-containing rengent which was added into mixed Ca （ NO3 ）2-P2O5 ethanol solutions to obtain dipping sols. All of the resulting samples showed apatite structure in their X- ray diffraction pattern. The lattice parameter a and the crystallite size were calculated to demonstrate the crystalline structure of fluoridated and potassium containing HA. Extracted paired premolars were chosen to obtain a fiat surface with opened tubules. It was observed that the tubules were covered by a 10 μm layer of fluoridated and potassium containing HA under the SEM. As the experimental results show the nanoscale fluoridated and potassium containing hydroxyapatite occludes the dentin tubules.
The aim of this work was to produce a nanoscale fluoridated and potassium containing hydroxyapatite via sol-gel method and to observe the effect of occlusion of the dentin tubule under scanning electron microscopy. HF was selected as fluorine-containing rengent which was added into mixed Ca （ NO3 ）2-P2O5 ethanol solutions to obtain dipping sols. All of the resulting samples showed apatite structure in their X- ray diffraction pattern. The lattice parameter a and the crystallite size were calculated to demonstrate the crystalline structure of fluoridated and potassium containing HA. Extracted paired premolars were chosen to obtain a fiat surface with opened tubules. It was observed that the tubules were covered by a 10 μm layer of fluoridated and potassium containing HA under the SEM. As the experimental results show the nanoscale fluoridated and potassium containing hydroxyapatite occludes the dentin tubules.
基金
FundedbythetheMajorProjectofScienceandTechnologyBureauofSichuanProvince(04GG00902302)
