Tilted implants as an alternative to maxillary sinus grafting: a clinical, radiologic, and periotest study.
Tilted implants as an alternative to maxillary sinus grafting: a clinical, radiologic, and periotest study.
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DOI：
10.1111/j.1708-8208.2001.tb00127.x
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发表时间：
2001-01-01
影响因子：
3.6
通讯作者：
Rangert, B
中科院分区：
文献类型：
--
作者：
Aparicio, C;Perales, P;Rangert, B
背景：由于机械和解剖学上的困难，种植体治疗萎缩的上颌骨是一个挑战。上颌窦底提升术由于其复杂性和不可预测性仍未被普遍接受。目的：在本研究中，倾斜种植体和轴向种植体联合用于严重后上颌吸收的患者，作为鼻窦移植的替代方法。材料与方法：25例患者使用101个Branemark系统种植体支持的29个固定部分假体进行康复。59个种植体在轴向安装，42个在倾斜方向安装。平均随访时间为37个月（术后21-87个月）。结果：5年后，倾斜种植体累积成功率为95.2%（成活率100%），轴向种植体累积成功率为91.3%（成活率96.5%），假体成活率100%。在第5年，倾斜种植体的平均边缘骨丢失为1.21 mm，轴向种植体的平均边缘骨丢失为0.92 mm。加载时的平均PTV为-2.62和-3.57,5年后倾斜种植体和轴向种植体的PTV分别为-4.73和-5.00。随访期间，除2个假体机械稳定外，其余假体均稳定，14个假体重新拧紧18个基牙螺钉和5个金螺钉，2个基牙螺钉和2个咬合面骨折。结论：结果表明，倾斜种植体是上颌窦底增强术的一种安全有效的替代方法。
BACKGROUND: Owing to mechanical and anatomic difficulties, implant treatment in the atrophic maxilla represents a challenge. The maxillary sinus floor augmentation procedure is still not universally accepted because of its complexity and its unpredictability.PURPOSE: In this study, a combination of tilted and axial implants was used in patients with severely resorbed posterior maxillae as an alternative to sinus grafting.MATERIALS AND METHODS: Twenty-five patients were rehabilitated with 29 fixed partial prostheses supported by 101 Branemark System implants. Fifty-nine implants were installed in an axial and 42 in a tilted direction. The average follow-up period was 37 months (range: 21-87 mo post loading).RESULTS: After 5 years, the implant cumulative success rate was 95.2% (survival: rate 100%) for the tilted implants and 91.3% (survival rate: 96.5%) for the axial implants, and the prosthesis survival rate was 100%. At the fifth year, the average marginal bone loss was 1.21 mm for the tilted implants and 0.92 mm for the axial ones. The mean Periotest values (PTV) at loading time were -2.62 and -3.57, and after 5 years the PTVs were -4.73 and -5.00 for the tilted and the axial implants, respectively. During the follow-up, all prostheses but two were mechanically stable, retightening of 18 abutment screws and of 5 gold screws in 14 prostheses was done, and fracture of two abutment screws and two occlusal surfaces was experienced.CONCLUSIONS: Results indicate that the use of tilted implants is an effective and safe alternative to maxillary sinus floor augmentation procedures.