Artificial dental implants are suitable for the following cases: 1. Patients who are missing one tooth, multiple teeth, or all teeth. 2.Severe alveolar resorption of the whole jaw, wearing traditional full dentures with difficulties, bad function and not firm. 3, wear with traditional movable dentures poor retention, non-functional mucosa can not tolerate. 4.People who have special requirements for the beauty and function of dentures. 5, the remaining teeth around the missing teeth have problems, can not do traditional dentures.