When a person needs a partial denture, it is crucial to have one that fits properly. Metal partial frames are the preferred choice because they are strong and thin. They are more comfortable and enable clearer speech. A good-fitting partial will balance your bite to help you chew better and have a healthier jaw joint (TMJ), plus it will provide support for lips and cheeks. If a partial is not fitting tight around the natural teeth, it will cause damage to the roots of the teeth. On average, partial dentures should be replaced every 7 years.