Rawat Aditi, Thukral Himanshu, Jose Anson
Department of Oral and Maxillofacial Surgery, Army Dental Centre (Research and Referral), Delhi, India.
Ann Maxillofac Surg. 2019 Jan-Jun;9(1):96-102. doi: 10.4103/ams.ams_11_19.
Maxillary posterior region is a problem area for the placement of implants. The advanced resorption of alveolar bone is combined with an increase in pneumatization of maxillary sinus because of higher intra-antral pressure, giving rise to severely atrophied alveolar ridges with reduced bone height.
A total of 26 implants were placed in 21 patients using indirect sinus lift with simultaneous implant placement without using bone grafts. Intra-oral periapical radiographs were taken to determine residual bone height, endosinus bone (ESB), and crestal bone level.
All the implants were clinically and radiographically stable at the end of 6 months follow-up. All the implants showed ESB gain, with mean being 1.97 mm and 1.99 mm on mesial and distal sides, respectively.
The findings of this study indicate that successful osseointegration is predictable using osteotome sinus floor elevation without bone graft. Spontaneous new bone formation seemed to be expected with implants placed using indirect sinus lift.
上颌后牙区是种植体植入的难题区域。由于窦内压力升高，牙槽骨的高度吸收与上颌窦气化增加同时发生，导致牙槽嵴严重萎缩，骨高度降低。
对21例患者共植入26枚种植体，采用间接上颌窦提升术同时植入种植体，不使用骨移植材料。拍摄口内根尖片以确定剩余骨高度、窦内骨（ESB）和牙槽嵴顶骨水平。
在6个月的随访结束时，所有种植体在临床和影像学上均保持稳定。所有种植体的ESB均有增加，近中侧和远中侧的平均增加量分别为1.97mm和1.99mm。
本研究结果表明，使用不植骨的骨凿上颌窦底提升术可实现可预测的成功骨整合。采用间接上颌窦提升术植入种植体似乎有望实现自发的新骨形成。
