Gabbert Olaf, Koob Andreas, Schmitter Marc, Rammelsberg Peter
Department of Prosthodontics, Clinic for Oral, Dental, and Maxillofacial Diseases, University Hospital Heidelberg, Heidelberg, Germany.
J Clin Periodontol. 2009 Feb;36(2):177-83. doi: 10.1111/j.1600-051X.2008.01357.x.
Investigation of the short-term survival of implants placed in combination with an internal sinus lift (ISL) without graft material.
Thirty-six patients received 92 screw-shaped dental implants in combination with an ISL. No bone grafts or bone substitutes were used. Forty-four patients with 77 implants in the native posterior maxilla served as controls. X-rays taken after implant placement and 6 months later were evaluated for the presence of bone gain at the apical aspect of the implants. Kaplan-Meier survival curves and Cox regression analysis were used to estimate survival curves and to isolate risk factors for implant failures.
Within a mean observation period of 1.2 years (minimum 9 months; maximum 3.7 years), four failures were recorded in the experimental group and two in the controls. The probability of survival was above 94% for both groups. Six-nine months after surgery, bone gain was observed in 29 out of 92 implants. Comparison of the experimental group and controls revealed no effect of ISL and membrane perforation on the probability of survival.
Promising short-term outcomes were observed for implants with ISL without graft material; for a substantial proportion of implants, apical bone gain was observed in the first 6-9 months.
研究不使用植骨材料的联合内提升术（ISL）植入种植体的短期存活率。
36例患者接受了92枚与ISL联合使用的螺旋形牙种植体。未使用骨移植或骨替代物。44例在上颌后牙区植入77枚种植体的患者作为对照。对种植体植入后及6个月后拍摄的X线片进行评估，观察种植体根尖部骨量增加情况。采用Kaplan-Meier生存曲线和Cox回归分析来估计生存曲线并确定种植体失败的危险因素。
在平均1.2年（最短9个月；最长3.7年）的观察期内，试验组记录到4例种植体失败，对照组有2例。两组的存活率均高于94%。术后6-9个月，92枚种植体中有29枚观察到骨量增加。试验组与对照组的比较显示，ISL和膜穿孔对存活率没有影响。
对于不使用植骨材料的ISL种植体，观察到了良好的短期效果；在相当一部分种植体中，术后6-9个月观察到根尖部骨量增加。
