However, the bone volume and adjacent anatomic structure limit the feasibility of dental implant. 然而,无牙脊的骨头高度和邻近的解剖构造往往限制了植牙的可行性。
In order to improve security and validity of implantation, it is better to take spiral CT examination to evaluate the bone volume and shape of zygomatic body before zygomatic-area implant. 但由于个体差异,建议修复前先行螺旋CT影像学检查,评估颧骨的形态和骨量,以提高种植的安全性和有效性。
The membrane fabricated in the volume proportion of 2:1 had proper physical property, making it an ideal material of absorbable membrane for guided bone regeneration in dental implant. 按2:1的体积比制得的几丁糖-胶原膜具有较理想的物理性能,为其成为应用于牙种植中的可吸收性引导骨再生膜材料提供了良好的基础。