Dentures are removable dental appliances designed to replace missing teeth. They are typically made from materials like acrylic resin and can be customized to fit the shape of a person's mouth. Dentures help restore the ability to chew food and improve speech, while also enhancing the appearance of a person's smile. There are two main types of dentures: complete dentures, which replace all teeth in the upper or lower jaw, and partial dentures, which fill in gaps when some natural teeth remain. Proper care and regular dental check-ups are essential to maintain the health of the gums and the longevity of the dentures.