上颌窦内提升术用于严重骨萎缩患者种植修复3年疗效观察

目的：研究单纯上颌窦内提升术用于严重骨萎缩患者种植修复的临床疗效。方法：对2008～2009年上颌后牙缺失伴缺牙处余留骨高度不足5 mm的22例患者行单纯上颌窦内提升术,同期植入Straumann？？ SLA种植体32颗。术后6、12、24、36个月复查并行X线片检查。结果：所有种植体均于术后3~6个月成功负载,其中1颗种植体在负载12个月时脱落,其余种植体稳固,无相关并发症出现。种植体在36个月时的存留率为96.88%。术后6、12、24、36个月的根尖片显示,上颌窦内种植体周围骨高度持续稳定增加,36个月时骨高度增加 （3.41±0.42） mm,边缘骨丧失（1.21±0.46） mm。结论：单纯上颌窦内提升同期植入种植体,能有效解决上颌后牙区严重骨萎缩时的牙种植修复问题。

Osteotome sinus floor elevation without grafting on severely resorbed maxillary crest: a 3-year prospective study

PURPOSE： This study was designed to explore the clinical outcome of implant placed at the time of osteotome sinus floor elevation （OSFE） without grafting in patients with severely resorbed maxillary alveolar bone. METHODS： Twenty-two patients with residual bone height （RBH） less than 5 mm received OSFE without grafting combined with simultaneous implant placement. Thirty-two Straumann？？ SLA implants were placed. The patients were recalled 6, 12, 24 and 36 months after surgery and radiographs were taken for assessment of clinical outcomes. RESULTS： All implants were successfully loaded 3-6 months after surgery. One implant was lost after 12 months of functional loading, while the other implants were stable and no complications were observed. The 3-year survival rate of implant was 96.88%. Radiographs at 6-, 12-, 24-, and 36- month demonstrated the endo-sinus bone gain increased constantly during the follow-up period. The endo-sinus bone gain was （3.41±0.42） mm and the marginal bone loss was（1.21±0.46） mm at 36- month. CONCLUSIONS： OSFE without grafting combined with simultaneous implant placement should be considered as a viable technique for use in patients with severely absorbed maxillary alveolar bone.