The “Polyetheretherketone (PEEK)” is a linear, polycyclic, semi-crystalline thermoplastic which has emerged as an alternative to metals and is widely used in biomaterials. It is also used in dental implants as an abutment, implant structure, or a superstructure. Purpose: This study is aimed to review the relevant studies on various ways to modify PEEK to deal with its limited bioactivity and make it ideal material for dental implants. Methodology: An online literature search was performed on Google Scholar using various search terms like “dental implants,” “PEEK,” “osseointegration,” “modification,” and “surface treatment.” Findings: Several viable approaches have been suggested to improve PEEK’s bioactivity. A lot of approaches are based on improving the roughness of surface, while improving the osseo-conductive coating materials and hydrophilicity. Conclusion: There are different approaches to modify PEEK to remove its limitations related to bioactivity. It is possible to use melt-blending with “bioactive nanoparticles” to develop “bioactive nanocomposites,” while using “gas plasma etching, spin-coating, deploying plasma-ion, and electron beam” to modify PEEK implants to be more bioactive. However, further experiments will be required to certify these materials for using in dental implants