Department of Prosthodontics, University of Sao Paulo, School of Dentistry, Sao Paulo, Brazil.
Stomatology Department, University of Sao Paulo, School of Dentistry, Sao Paulo, Brazil.
Clin Implant Dent Relat Res. 2017 Dec;19(6):1015-1022. doi: 10.1111/cid.12527. Epub 2017 Aug 29.
Despite the existence of several studies validating the use of narrow diameter implants, most of them are based on pure Ti alloys. There is few clinical evidence of the success of TiZr narrow diameter implants (TiZr NDIs) regarding survival rate (SR) and marginal bone loss (MLB).
The aim of this review was to systematically assess SR, as well as MBL of TiZr NDIs compared to commercially pure titanium narrow diameter implants (cpTi NDIs).
The search was conducted in Medline/PubMed, Cochrane, Scopus, and Embase databases (year 2000 to November 2016). Cohort studies and randomized trials were included.
Six clinical studies from the 3453 articles initially identified met the inclusion criteria. There were no statistically significant differences in SR when TiZr NDIs and cpTi NDIs were compared in the 1-year follow up (P = .5), or when comparing TiZr NDIs placed in posterior and anterior regions. There was no difference between groups regarding 1-year SR: -0.01 (95% CI, -0.05-0.03) and MLB: -0.01 mm (95% CI: -0.14-0.12).
It can be concluded that TiZr NDIs present similar success rates and peri-implant bone resorption to cpTi NDIs.
尽管有几项研究验证了使用小直径种植体的有效性，但其中大多数研究都是基于纯钛合金。关于 TiZr 小直径种植体（TiZr NDIs）的存活率（SR）和边缘骨吸收（MLB），临床证据很少。
本综述的目的是系统评估 TiZr NDIs 的 SR 以及 MLB，与商用纯钛小直径种植体（cpTi NDIs）相比。
在 Medline/PubMed、Cochrane、Scopus 和 Embase 数据库中进行了搜索（2000 年至 2016 年 11 月）。纳入队列研究和随机试验。
从最初确定的 3453 篇文章中，有 6 项临床研究符合纳入标准。在 1 年随访时，TiZr NDIs 和 cpTi NDIs 的 SR 没有统计学差异（P = .5），或者比较 TiZr NDIs 在前部和后部的植入时，也没有统计学差异。两组之间在 1 年 SR 方面没有差异：-0.01（95% CI，-0.05-0.03）和 MLB：-0.01 mm（95% CI：-0.14-0.12）。
可以得出结论，TiZr NDIs 具有与 cpTi NDIs 相似的成功率和种植体周围骨吸收。
