颗粒型羟磷灰石作为骨代用品具有很好的生物相容性,成功地应用于临床已十多年了。主要用于牙槽嵴增高,牙周骨缺损的充填,以及植于牙槽骨内,维持牙槽嵴的高度。作者采用预制成型的羟磷灰石块代替自体骨修复腭骨缺损,进行了一年半的临床追踪观察,采用X线片观察,发现充填材料与缺损两侧为骨性愈合,长得非常稳固。采用的材料为致密羟磷灰石块,外包1mm厚的多孔复盖层。将其预制成与上腭部骨缺损相似的不规则 Granular hydroxyapatite as a bone substitute has good biocompatibility, has been successfully applied to clinical for more than 10 years. Mainly used for alveolar ridge increased, periodontal bone defect filling, and implanted in the alveolar bone, alveolar ridges to maintain the height. The authors used preformed hydroxyapatite blocks instead of autologous bone repair of palatal defects, a year and a half of clinical follow-up observation, the use of X-ray observation found that the filling material and defects on both sides of the bone healing, grow very solid . The material used is compact hydroxyapatite block, outsourcing 1mm thick porous cover. It is preformed to be similar to the upper palate bone defect irregularities