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目的:评价单钉近嵴顶固定颏部骨块移植术在上前牙区骨增量种植中的临床应用和疗效。方法:2013年1—6月收集上前牙区牙槽嵴严重吸收患者5例,年龄19~24岁,平均21.6岁,其中单牙缺失3例,多牙缺失2例。取患者颏部块状骨,采用单钉近嵴顶固定法行自体骨块移植,术后定期随访。种植体植入术前拍摄锥形束CT(cone beam computed tomography,CBCT),观察移植骨愈合情况,并测量牙槽嵴宽度和钛钉距牙槽嵴顶距离。参考CBCT检查结果,常规完成种植体植入术,待种植体骨结合形成后完成种植修复。结果:5例自体骨块移植术全部成功,无1例出现相关并发症。术后上前牙区骨量充足,固定钛钉顶端接近牙槽嵴顶。结论:采用单钉近嵴顶固定法行颏部自体骨块移植能有效改善上前牙区的骨量严重不足,临床疗效良好。
OBJECTIVE: To evaluate the clinical application and curative effect of mono-nail near crest-fixed chin bone graft in bone augmentation in anterior teeth. Methods: From January to June in 2013, 5 patients with severe absorption of alveolar ridge were collected, ranging in age from 19 to 24 years with an average of 21.6 years old. Among them, 3 cases were single tooth loss and 2 cases were multiple tooth loss. Patients with chin massive bone, with a single nail near the crest of the fixed autologous bone graft, regular follow-up. Before implant implantation, cone beam computed tomography (CBCT) was performed to observe the healing of the graft. The width of the alveolar ridge and the distance between the titanium nail and the crest of the alveolar ridge were measured. Reference CBCT test results, routine completion of implant implantation, implant bone formation to be completed after the completion of implant repair. Results: All 5 cases of autologous bone graft were successful. No one had complications. Postoperative anterior teeth sufficient bone mass, fixed titanium nail tip near the alveolar crest. Conclusion: The single chin near the crest fixed chin autologous bone graft can effectively improve the anterior bone area of a serious lack of bone mass, good clinical efficacy.