Bone Tissue Engineering: nHA is used to create scaffolds that mimic the bone's natural structure, promoting cell attachment, growth, and proliferation. This helps in the repair and regeneration of bone tissues. Dental Care: nHA is incorporated in toothpastes and mouthwashes due to its remineralization properties, which help in repairing enamel and reducing sensitivity. Drug Delivery: nHA nanoparticles can be used as carriers for targeted delivery of therapeutic agents to specific sites in the body, enhancing the efficacy and reducing side effects of the drugs. Coatings: nHA coatings on metal implants improve their integration with bone tissues, reducing the risk of rejection and enhancing the longevity of the implants.