Rosen Paul S, Sahlin Herman, Seemann Rudolf, Rosen Ari S
Clinical Professor of Periodontics, Baltimore College of Dental Surgery, University of Maryland Dental School, Baltimore, MD, USA.
Private Practice limited to Periodontics and Dental Implants, 907 Floral Vale Boulevard, Yardley, PA, 19067, USA.
Int J Implant Dent. 2018 Aug 23;4(1):24. doi: 10.1186/s40729-018-0136-4.
This retrospective consecutive case series study was performed to determinate the survival rate and implant stability of short (7 mm length) dental implants with an electrowetted hydrophilic surface that were in function from 1 to 7 years.
A retrospective chart review identified and evaluated 86 consecutively placed 7-mm-long dental implants (ProActive, Neoss Ltd., Harrogate, England) in 75 patients. Analysis was performed for implant survival as well as implant stability, as measured by insertion torque (IT) and resonance frequency analysis (RFA).
Clinical follow-ups were performed from 1.0 to 7.0 years after implant placement (mean 4.0 ± 2.1 years). Two implants failed prior to loading resulting in a 5-year cumulative survival rate (CSR) of 97.7%. An additional late failure occurred at 60 months post-loading for a 7-year CSR of 94.8%. Mean insertion torque was 30.1 ± 7.4 Ncm and mean RFA at insertion was 73.6 ± 8.1 ISQ. Follow-up RFA measurements suggested that the achieved primary stability was maintained throughout the healing phase.
The present study demonstrates that treatment with short implants can be a predictable treatment option with high survival rate in sites with limited available bone.
本回顾性连续病例系列研究旨在确定具有电润湿亲水性表面的短（7毫米长）牙种植体在1至7年功能期内的存活率和种植体稳定性。
通过回顾性病历审查，对75例患者中连续植入的86颗7毫米长的牙种植体（ProActive，Neoss Ltd.，英国哈罗盖特）进行识别和评估。对种植体存活率以及通过植入扭矩（IT）和共振频率分析（RFA）测量的种植体稳定性进行分析。
在种植体植入后1.0至7.0年进行临床随访（平均4.0±2.1年）。两颗种植体在加载前失败，导致5年累积存活率（CSR）为97.7%。加载后60个月发生了另外一例晚期失败，7年CSR为94.8%。平均植入扭矩为30.1±7.4 Ncm，植入时的平均RFA为73.6±8.1 ISQ。随访RFA测量表明，在整个愈合阶段，所实现的初始稳定性得以维持。
本研究表明，在可用骨量有限的部位，使用短种植体治疗可以是一种具有高存活率的可预测治疗选择。
