微型种植体在无牙颌患者覆盖义齿修复中的初步应用  

Preliminary clinical study of microimplants in the restoration of edentulous jaws

作　　者：陈波[1] 林野[1] 邸萍[1] 李健慧[1] 邱立新[1] 

机构地区：[1]北京大学口腔医学院.口腔医院口腔种植中心,100081

出　　处：《中华口腔医学杂志》2006年第4期200-202,共3页Chinese Journal of Stomatology

摘　　要：目的探讨微型种植体在无牙颌患者修复中的临床初步应用。方法2002年5至8月,为4例全身健康情况不良伴牙槽骨重度吸收的无牙颌患者植入14枚微型种植体,磁性固位体覆盖义齿修复。术前、术后即刻、术后每年评估种植体周围皮质骨高度及周围牙龈健康状况,检查修复体戴用情况,评估患者满意度。结果14枚种植体至今全部存留,未发生种植体周围炎,X线片检查显示:种植体周围皮质骨高度稳定。除1枚下颌种植体磁性基台折断,余无异常。全部患者对修复体满意。结论利用微型种植体为无牙颌且伴有牙槽骨吸收的患者行覆盖义齿修复是可行的。本组随访3年的临床效果满意,长期效果尚待进一步观察。Objective To investigate if magnetic- attached overdenture supported by microplants of 2. 5mm in diameter was able to function properly. Methods Fourteen microimplants were placed in 4 patients. Implants were exposed 3 months later and magnetic abutments were connected directly. X-ray was taken during the 3 year follow-up to examine marginal bone level. Peri-implant soft tissue was also checked. Denture retention, chewing stability and overall satisfaction with the microimplants retained overdenture were evaluated. Results All of the 14 microimplants achieved initial primary stability without infection or any other postoperative complications. No implant was lost during the follow-up period. Only one magnetic abutment fractured one year after restoration and was replaced. X-ray showed highly stable marginal bone level around the microimplants. The patients were satisfied with the restoration. Conclusions The microimplants retained overdenture leads to a significant improvement of function despite of the small dimensions of these implants. In particular for elder patients with severe residual ridge resorption, this treatment represents a less invasive alternative compared to conventional implant systems.

关 键 词：覆盖义齿 颌 无牙 微型种植体 

分 类 号：R783.6[医药卫生—口腔医学] R782.1[医药卫生—临床医学]