Department of Prosthodontics and Crown & Bridge, People's Dental Academy, Bhopal, Madhya Pradesh, India.
School of Humanities and Engineering Sciences, MIT Academy of Engineering, Alandi, Pune, Maharashtra, India.
Evid Based Dent. 2023 Dec;24(4):193-194. doi: 10.1038/s41432-023-00935-y. Epub 2023 Sep 25.
The present systematic review was executed to evaluate the stress shielding effect of PEEK and its composite dental implants as compared to other implant (titanium and zirconia) materials in peri-implant bone.
The comprehensive online literature search was conducted on PubMed, Google Scholar, and Web of Science from January 2011 to January 2023. A total of 43 in vitro studies were identified related to the raised question. In all, 34 studies were excluded as they included in vitro studies focusing on stress distribution in prosthesis framework, abutments, crown, and on biological properties such as cell adhesion, etc. Only eight studies after full-text screening were included in the present systematic review.
The data extracted from included studies showed that PEEK and its composite materials, have a less stress shielding effect due to their low modulus of elasticity resulting in higher stress concentration and strain in the peri-implant bone as compared to titanium and zirconia implant materials.
The PEEK and its composites can be used as an alternative material in the esthetic region and in those who have an allergy to metal implants. However, due to the low elastic modulus of PEEK, a homogenous stress distribution is not observed along the entire length of the implant. Further studies are required to improve the composition of PEEK material so that a homogenous reduction of stress shielding effect along the whole length of a dental implant can be achieved.
本系统评价旨在评估 PEEK 及其复合牙科种植体在种植体周围骨中的应力屏蔽效应，并将其与其他种植体（钛和氧化锆）材料进行比较。
从 2011 年 1 月至 2023 年 1 月，我们在 PubMed、Google Scholar 和 Web of Science 上进行了全面的在线文献检索。共确定了 43 项与提出的问题相关的体外研究。共有 34 项研究因包括有关假体框架、基台、牙冠的应力分布以及细胞黏附等生物特性的体外研究而被排除在外。仅对全文筛选后的 8 项研究进行了本系统评价。
纳入研究中提取的数据表明，由于 PEEK 及其复合材料的弹性模量较低，因此具有较低的应力屏蔽效应，导致种植体周围骨中的应力集中和应变较高，与钛和氧化锆种植体材料相比。
PEEK 及其复合材料可作为美学区域和对金属植入物过敏的患者的替代材料。然而，由于 PEEK 的低弹性模量，在整个植入物长度上并未观察到均匀的应力分布。需要进一步研究来改善 PEEK 材料的组成，以实现整个牙科植入物长度上均匀降低应力屏蔽效应。
