<p>Zirconium dioxide biomaterials have been employed in replacing and reconstructing the structural parts of the human physical structure due to their superior biocompatibility, high mechanical properties, and higher corrosion resistance. Zirconia implants generally do not elicit immunological reactions. Their inert surface and biocompatibility contribute to a reduced risk of inflammation and immune responses compared to metal implants like titanium. Due to these superior properties, there is an increasing demand from patients for the need of zirconia dental implants. Hydroxyapatite (Ca10(PO4)6(OH)2) is one of the ceramic biomaterials considered as an ideal materials for coating over biomaterials as it possesses almost a close similarity in chemical composition and excellent biocompatibility with natural bony tissue. Recently, the HAp-based coating has increasingly drawn attention to improve the adhesion quality of zirconium dioxide biomaterials. The present study aims to review the current evidence on the hydroxyapatite coated surface of zirconia dental implants, considering the changes they have undergone in recent years. Additionally, it comprehensively reviews the current progress in the adhesion qualities of hydroxyapatite based coatings on zirconium dioxide biomaterials specifically for the zirconium dioxide dental implant. It has been observed that a surface that meets the minimum unique characteristics will enhance the bonding force between the coating and zirconia biomaterial as the substrate. Critical factors of coating/substrate materials, coating techniques, and coating thickness that determine the adhesion quality are identified and discussed in this paper. The structural implant surface and micro-structure of hydroxyapatite-based coatings are also highlighted in this review to confirm the findings.</p>