1·Objective:The aim of this study is to investigate the effect and complication of immediate implantation of particulate hydroxylapatite artificial bone after teeth extraction.
目的:研究拔牙后即刻植入羟基磷灰石微粒人工骨的治疗效果和并发症。
2·The nanometer-level hollow hydroxylapatite material produced by the method is small in particle size, large in pore volume and surface area;
本发明羟基磷灰石纳米空心材料粒径小,孔体 积和表面积大;