Rossi Fabio, Lang Niklaus P, Ricci Emanuele, Ferraioli Lorenzo, Marchetti Claudio, Botticelli Daniele
Unit Scholar, Department of Biomedical and Neuromotorial Science, University of Bologna, Bologna, Italy.
University of Berne, Berne, Switzerland.
Clin Oral Implants Res. 2015 Apr;26(4):471-477. doi: 10.1111/clr.12409. Epub 2014 Apr 15.
To evaluate prospectively the clinical and radiographic outcomes after 5 years of early loading of 6-mm implants with a moderately rough (SLActive(®) ) surface supporting single crowns in the posterior regions.
Thirty-five consecutive patients received 40 SLActive(®) (Straumann) 6-mm implants with a diameter of 4.1 mm (n = 19) or 4.8 mm (n = 21). Insertion torque and resonance frequency analysis (RFA) were measured at implant installation. RFA was also measured at abutment connection. SynOcta abutments were tightened with 35 Ncm after 6 weeks of healing, and single porcelain fuse to metal crowns was cemented within 1 week. Implant survival rate and marginal bone loss were evaluated at various time intervals until 5 years after loading. The clinical crown/implant ratio was calculated as well.
Two of 40 implants were lost before loading (incorporation rate 95%), and no further implant loss or technical complications were encountered during the 5-year follow-up period. A mean marginal bone loss of 0.7 ± 0.6 mm was found after 5 years of function. The clinical crown/implant ratio increased with time from 1.6 at the delivery of the prosthesis to 2 after 5 years of loading.
Six millimeter implants with a SLActive(®) moderately rough surface supporting single crowns in the posterior region and loaded after 6-7 weeks maintained full function for at least 5 year with low marginal bone resorption.
前瞻性评估在后部区域使用具有适度粗糙表面（SLActive®）的6毫米种植体早期负重5年后的临床和影像学结果，这些种植体支持单冠修复。
35例连续患者接受了40枚SLActive®（士卓曼）6毫米种植体，直径为4.1毫米（n = 19）或4.8毫米（n = 21）。在种植体植入时测量植入扭矩和共振频率分析（RFA）。在基台连接时也测量RFA。愈合6周后，用35 Ncm的扭矩拧紧SynOcta基台，并在1周内粘结单颗烤瓷熔附金属冠。在负重后直至5年的不同时间间隔评估种植体存活率和边缘骨吸收情况。还计算了临床冠/种植体比例。
40枚种植体中有2枚在负重前丢失（纳入率95%），在5年随访期内未再出现种植体丢失或技术并发症。功能5年后，平均边缘骨吸收为0.7±0.6毫米。临床冠/种植体比例随时间从修复体交付时的1.6增加到负重5年后的2。
在后部区域使用具有SLActive®适度粗糙表面的6毫米种植体支持单冠修复，并在6 - 7周后负重，至少5年内保持全功能，边缘骨吸收低。
