目的

探讨经牙槽突进路提升上颌窦底同期植入种植体的新技术及其临床效果。

方法

11 位患者共12 侧上颌后牙缺失，男6 例，女5 例，年龄31 ～70 岁，缺牙部位牙槽骨的垂直高度1.3 ～4.0 mm。 经牙槽突正中开窗，推升缺牙部位上颌窦底的牙槽骨，并同期植入种植体和骨粉，开窗处覆盖可吸收胶原膜。 6 ～8 个月后常规行二期手术并进行上部结构修复。

结果

所有11 位患者共19 颗种植体均获得良好骨结合，顺利完成上部烤瓷牙冠修复。 随访3 ～12 个月，种植义齿均正常行使功能。

结论

经牙槽突开窗的上颌窦底提升术同期种植体植入可获得良好的短期临床效果，该术式较常规的侧面开窗上颌窦提升术创伤小，并且可缩短治疗时间。

Objective

To introduce a new maxillary sinus floor elevation technique with simultaneous implant placement through tanscrestal approach and evaluate its clinical effects.

Methods

11 patients with 12 maxillary sinus were included in this clinical study， 6 males， 5 females， patients' age ranges from 31 to 70.The remain alveolar bone height ranges from 1.3 to 4 mm.A bone window with a diameter of about 5 mm was made in the central of the alveolar crest，care was taken not to perforate the sinus membrane and the floor of maxillary sinus was elevated.Implants were placed in the bone windows and artificial bone materials were stuffed around the implants.A collagen membrane was used to cover the bone window.Implants were exposed 6-8 months postoperatively and the superstructures were finished sequentially.The follow-up time was 3 to 12 months.

Results

All 19 implants in 12 sides of maxillary sinus gained osseointegration，no implant loosed or lost during the follow-up time.Patients were satisfactory with their implant dentures.

Conclusions

Maxillary sinus floor elevation with simultaneous implants placement in severe atrophic alveolar utilizing a transcrestal technique can gain predictable short-term clinical effects， it has less trauma and treatment time than traditional sinus lift with a lateral approach.