 Metal oxide nanoparticles are increasingly being used in biomedical applications such as tissue engineering, immunotherapy, diagnosis, dentistry, regenerative medicine, wound healing, and biosensing. These particles exhibit unique physical and chemical properties which make them ideal candidates for use in these applications. Metal oxides also possess antimicrobial, antifungal, and antiviral properties, making them useful in combating infectious diseases. Additionally, they can be used to study the toxicity of certain metals and other substances.