Hydroxyapatite (HAp) is the emerging bioceramic, which is widely used in various biomedical applications, mainly in dentistry. Hydroxyapatite has excellent biological behavior and its composition and crystal structure is same as apatite in human dental structures and skeletal system. It possesses exceptional biocompatibility and unique bioactivity. It has been widely used in hard tissue replacement and reconstruction applications, such as implant coatings, and bone substitues etc. Incorporation of hydroxyapatite into various restorative materials was found to improve mechanical properties of material without impeding their inherent biological properties