Dentures are removable dental appliances designed to replace missing teeth and restore function and appearance to a person's smile. They can be full dentures, replacing all the teeth in the upper or lower jaw, or partial dentures, used when some natural teeth remain. Made from materials like acrylic, resin, or metal, dentures are custom-fitted to a patient's mouth to provide comfort and functionality, allowing for normal activities such as eating and speaking. Modern dentures are designed to look natural and can significantly improve both aesthetics and oral health for individuals with tooth loss.