Wu Yi-qun, Huang Wei, Zhang Zhi-yong, Wang Xu-dong, Wang Feng, Wang Shen
Department of Oral and Craniofacial Implant, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Shanghai Kou Qiang Yi Xue. 2011 Oct;20(5):506-11.
To evaluate the surgical outcome of tilted implants as an alternative to sinus grafting and the prosthodontic outcome of the bridges on tilted implants in severely resorbed posterior maxilla.
A total of twenty-one patients were rehabilitated with 27 fixed prostheses supported by 78 Branemark and ITI System implants between January 2005 and December 2007. Forty-four implants were placed in an axial and 34 in a tilted direction. In these patients, the maxillary bone volumes were insufficient for conventional placement of implants to support a fixed prosthesis. After an average healing period of 3 months, all implants were functionally loaded with cemented bridges or screw retained bridges. Each patient was recalled at 12th, 24th and 36th month for clinical and radiographic examinations. SPSS11.0 software package was used for statistical analysis.
One of the 44 axial implants was lost 2 months postoperatively. After 3 years, the implant survival rate was 100% for the tilted implants and 97.72% for the axial implants, and the prosthesis survival rate was 100%. The peri-implant soft tissues were stable over time; the mean probing depths and mean attachment levels did not change during the follow-up period.
This study demonstrates that patients with a severely resorbed maxilla can be treated successfully with tilted implant treatment; the use of tilted implants is an effective and safe alternative to maxillary sinus floor augmentation procedure.
评估倾斜种植体作为上颌窦植骨替代方法的手术效果，以及严重吸收的上颌后牙区倾斜种植体支持的桥体修复效果。
2005年1月至2007年12月期间，共有21例患者接受了由78枚Branemark和ITI系统种植体支持的27个固定修复体修复。44枚种植体轴向植入，34枚倾斜植入。这些患者的上颌骨量不足以常规植入种植体来支持固定修复体。平均愈合3个月后，所有种植体均通过粘结桥或螺丝固位桥进行功能加载。在第12、24和36个月对每位患者进行复诊，进行临床和影像学检查。使用SPSS11.0软件包进行统计分析。
44枚轴向植入的种植体中有1枚在术后2个月丢失。3年后，倾斜种植体的种植体存留率为100%，轴向种植体为97.72%，修复体存留率为100%。种植体周围软组织随时间保持稳定；随访期间平均探诊深度和平均附着水平未发生变化。
本研究表明，严重吸收的上颌骨患者采用倾斜种植体治疗可获得成功；倾斜种植体的使用是上颌窦底提升术有效且安全的替代方法。
