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采用完全随机同期对照方法，对家兔桡骨节段性缺损动物模型，分别植入自制脱钙牙本质基质（ＤＤＭ）、生物活性玻璃陶瓷（ＢＧＣ）与脱钙牙本质基质复合物、脱钙骨基质（ＤＢＭ）整复骨缺损，行Ｘ线观察及新骨钙磷元素动态变化的测定。结果显示：用ＤＤＭ整复的骨缺损区在术后各程期的Ｘ线表现与ＤＢＭ相似，第８周时新旧骨界线消失，髓腔再通；而ＤＤＭ加ＢＧＣ的骨整复区在第８周时虽然骨断端新旧骨的界线消失，但新骨的Ｘ线表现仍为一阻射团块；空白对照侧在术后８～１２周Ｘ线表现为骨断端成锥形，断端间无骨性愈合。新骨Ｘ线能谱分析结果显示，ＤＤＭ和ＤＢＭ组内各程期Ｃａ／Ｐ值有显著性差异（Ｐ＜０．０１）；除ＤＤＭ及ＤＢＭ第１２周时的Ｃａ／Ｐ值外，３种材料各程期新骨Ｃａ／Ｐ原子个数比与正常骨相比有显著性差异（Ｐ＜０．０１
A completely randomized simultaneous control method was used in this study. Rabbits with segmental radial segmental defects were implanted with DDM, bioactive glass ceramics (BGC) and decalcified dentin matrix composite, decalcified bone Matrix (DBM) Whole Defects, X - ray Observation and Dynamic Changes of Calcium and Phosphorus in New. The results showed that the X-ray manifestations of bone defect areas reconstructed with DDM were similar to those of DBM at each stage of postoperative. The boundaries of old and new bone disappeared and the medullary cavity recanalized at the 8th week. However, At 8 weeks, although the boundary between old bone and new bone disappeared, the X-ray of new bone was still a block. On the blank control side, the X-ray showed a conical fracture at 8-12 weeks after operation Boneless healing between the ends. X-ray spectrum analysis of new bone showed that there were significant differences in Ca / P in DDM and DBM groups (P <0.01). In addition to the Ca / P values of DDM and DBM at 12 weeks There was a significant difference in the number of Ca / P atoms between the new bone and the normal bone in different materials (P <0.01)