Abstract: Objective: To observe the clinical effects of material from decalcified human dentinal metric (DHDM) in promoting bone tissue healing after the extraction of impacted teeth. Methods: 40 patients with  impacted teeth were randomly divided into two groups: control group A (20 cases) and experimental group B (20 cases). After extractions, the wound sockets in group B was filled with DHDM immediately. Those extraction wounds in group A were treated conventionally. Pretreatment panoramic radiographs  and  periapical radiographs  were examined at one-week and  one month after surgery. Assessment was made according to the radiographs and clinical examinations. Result: All patients healed by first intention. A month after extraction, the bone density of extraction wound in group A was still a little lower than the normal surrounding bone, but it was similar to normal bone in group B. Conclusion: Filled with material of decalcified human dentinal metric, the reconstruction of bone is accelerated, which shorten the time of wound healing.

Key words:  decalcified human dentinal metric, impacted tooth, bone healing, bone density

摘要：  目的： 观察脱钙人牙基质材料在埋伏牙拔除后促进骨组织愈合的临床效果。方法： 共40例埋伏牙拔除患者，随机平均分为A、B组：A组拔牙创直接缝合，为空白对照；B组拔牙窝内即刻植入脱钙人牙基质材料。所有患者均在术前摄全口曲面断层片，术后1周、1个月行局部数字牙片检查；结合临床检查进行比较，观察骨腔愈合及骨重建情况。结果： 2组患者创口均Ⅰ期愈合。术后1月X线片检查，A组拔牙窝骨密度仍低于周围正常骨，B组拔牙创骨密度已与正常骨接近。结论： 采用脱钙人牙基质材料填入拔牙窝内的方法，骨诱导作用明显，能加速骨组织的修复重建，缩短了拔牙创愈合时间。

关键词:  , 脱钙人牙基质材料；埋伏牙；骨愈合；骨密度

CLC Number: 

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• R782.11