Augmentation implants are used to build up bone, providing bulk or cosmetic improvement. Increasing the size of a weak chin, creating beautiful cheek bones, changing the angle of the jaw, or lifting noses are examples of the use of augmentation implants. In some cases it is necessary to augment existing bone to add another type of dental implant. Augmentation materials include bone and synthetic bone as well as manufactured devices to replace or augment missing facial bone structures