人工骨粉在与邻牙根影像重叠多生牙摘除中应用的临床效果

目的：探讨人工骨粉在与邻牙根影像重叠多生牙摘除中应用的临床效果。方法：选择2009～2012年经治的与邻牙根影像重叠的多生牙7例8颗牙，分成两组。两组均采用弧形切口翻瓣凿骨后完整拔除埋伏多生牙。骨粉组4例4颗牙拔牙后，牙槽窝即刻植入Bio—Oss人工骨粉和Bio—Gide生物膜；对照组3例4颗牙不植入Bio—Oss骨粉和生物膜，仅将新鲜血液充满骨创即关闭手术切口。术后1、2周及1、3、6、12月复查，观察临床效果、x线片检查骨愈合情况、记录邻牙松动度及牙髓活力测试。结果：骨粉组邻牙均未出现松动、无咀嚼疼痛及继发牙髓炎的症状，x线片显示根尖牙周膜间隙正常，无暗影。对照组4例均有不同程度的手术创区邻牙伸长感，咬合痛显著，x线显示根尖牙周膜间隙不同程度增宽，1例邻牙松动，1例继发牙髓炎症状。结论：人工骨粉在邻牙根影像重叠多生牙拔除中应用的临床效果明显。

The clinical effect of artificial bone in application of extracting supernumerary tooth overlaping with adjacentroot image.

Objective：to explore the clinical effect of artificial bone in application of extracting supernumerary tooth which is ovedaping with adjacent root image. Method：The supernumerary teeth overlaping with adjacent root image were chosen,divided into two groups.The teeth in two group were both completely extracted afer being arc-shaped flapped and re- moved bone. The experimental group were 4 cases of 4 impacted teeth,Bio-Oss artificial bone and Bio-Gide periosteum were instantly implanted into the sockets in the group after the teeth extracted. The control group were 3 cases of 4 impacted teeth,the sockets in the group were only treated with new blood after the teeth extracted. The clinical effects were observed, bone healings were examined with X-ray,adjacent teeth mobility and dental pulp vitality test were recorded on 1 and 2 weeks,1,3,6 and 12 months after the operation. Result：The adjacent teeth in group of artificial bone have not become loose, have no pain when chew, have no symptoms of pulpitis. X-rays show that their root tip and parodontium are normal and have no shadows. The 4 cases of adjacent teeth in the control group all have elongation feeling, pain obviously when bite,X- rays show that their root tip and parodontium become broadening at different levels.;1 case of adjacent teeth becomes loose; 1 case of adjacent teeth appears secondary pulpitis. Conclusion：The clinical effect of artificial bone in application of extract- ing supernumerary tooth overlaping with adjacent root image is significant.