非埋入式不植骨上颌窦提升牙种植术临床随访研究

[目的]随访上颌后牙区骨量不足条件下，采用非埋入式不植骨上颌窦提升牙种植术的临床预后。[方法]2005年12月-2012年1月期间，将需要行上颌后牙区种植修复的259例患者共339颗种植体分别纳入上颌窦提升植入组（A组）和常规植入组（B组），其中A组140颗，B组199颗，种植负重后平均随访（1．7±1．7）年，最长达6．5年，分别计算两组种植体的成功率。[结果]本研究中采用非埋入式不植骨上颌窦提升牙种植术并没有造成并发症，A、B两组种植体的成功率分别为98．57％、99．5％，差异无统计学意义（P〉0．05）。[结论]非埋人式不植骨上颌窦提升牙种植术适用于上颌窦底垂直高度≥5mm的病例，可作为操作简便、创伤较小、费用低、疗程短、患者易于接受的临床治疗方法。

Clinical follow up for the technique of internal sinus lift without bone grafting and simultaneous non-submerged implant placement in atrophic posterior maxilla

[Objective] To observe the clinical prognosis of internal sinus lift without hone grafting and simultaneous non-submerged implant placement in atrophic posterior maxilla. [ Methods ] From December, 2005 to January, 2012, 339 implants were placed in 259 consecutive patients who need implant treatment in the posterior maxilla. They were classified into two groups： internal sinus lift without bone grafting and simultaneous non-submerged implant placement group （group A） and the conventional implant placement group （group B）. Totally 140 implants belong to the group A and 199 implants belong to the group B. The average follow-up period was （1.7 ± 1.7） years, the longest was 6.5 years. Then, the successful rates of the 2 groups were calculated respectively. [ Results ] No complications occured in group A. The success rate of the group A and the group B were 98.57% and 99.5% respectively. The difference was not statistically significant （P 〉 0.05）. [Conclusion] The technique of internal sinus lift without bone grafting and simultaneous nonsubmerged implant placement in atrophic posterior maxilla can be used in the case of the thickness of maxillary sinus floor over 5 mm, and this treatment can be used in clinic because of its easier operation, less invasion, lower cost, shorter period of healing and easily accepted by the patients.