Aslam Ayesha, Ahmed Bilal
Department of Prosthodontics, Army Medical College, National University of Science and Technology (NUST) Islamabad.
J Coll Physicians Surg Pak. 2016 Apr;26(4):315-9.
The objective of this meta-analysis was to determine the literature-based evidence if platform-switching has an effect in preventing marginal bone loss around prosthodontic implants following their functional loading in comparison to conventional platform-matching. A systematic literature search was performed on PubMed, Science Direct, Google Scholar for Literature from 1950 to January 2015, human randomized clinical trials (RCTs) and prospective clinical controlled cohort studies (PCCS) reporting marginal bone loss around platform-switched and matched implants. Six RCTs with a low risk of bias revealed a significantly less mean marginal bone loss (0.57 mm [CI 95% 0.30; 0.84]) around platform-switched implants in comparison to platform-matched implants [1.14 mm (CI 95% 0.69; 1.6, p < 0.001)]. The meta-analysis revealed a significantly less peri-implant marginal bone loss with platform-switched implants as compared to platform-matched implants. The qualitative analysis depicts a trend favouring the platform-switching technique over platform- matching technique to prevent marginal bone loss. However, owing to the heterogeneity of the included studies, their results necessitate cautious interpretation.
本荟萃分析的目的是确定与传统平台匹配相比，平台转换在义齿种植体功能加载后预防种植体周围边缘骨丢失方面是否有基于文献的证据。在PubMed、Science Direct和谷歌学术上对1950年至2015年1月的文献进行了系统检索，纳入了报告平台转换和匹配种植体周围边缘骨丢失情况的人类随机临床试验（RCT）和前瞻性临床对照队列研究（PCCS）。六项偏倚风险较低的RCT显示，与平台匹配种植体相比，平台转换种植体周围的平均边缘骨丢失显著更少（0.57毫米[95%置信区间0.30；0.84]），而平台匹配种植体为[1.14毫米（95%置信区间0.69；1.6，p＜0.001）]。荟萃分析显示，与平台匹配种植体相比，平台转换种植体的种植体周围边缘骨丢失显著更少。定性分析表明，在预防边缘骨丢失方面，平台转换技术比平台匹配技术更具优势。然而，由于纳入研究的异质性，其结果需要谨慎解读。
