Hard tissue engineering is a multidisciplinary field focused on developing biological substitutes to restore, maintain, or improve the function of hard tissues, primarily bone, cartilage, and dental structures. This academic concept integrates principles from cell biology, materials science, and engineering to investigate and design strategies involving biomaterials, scaffolds, and cellular components aimed at promoting tissue regeneration and repair. Its significance lies in providing advanced therapeutic approaches for addressing tissue loss and damage resulting from trauma, disease, or congenital defects, offering potential alternatives to traditional reconstructive methods.