title: Longitudinal study of soft-tissue profile changes in patients receiving immediate complete dentures.
abstract: The gradual changes in the skeletal and soft-tissue profile of complete denture wearers resulting from residual ridge reduction were studied using profile cephalometric films obtained from 21 subjects during a 2-year period of denture use. The variables for each observation stage were calculated from 58 digitized reference points. During the first 6 months of denture use, a marked anterosuperior rotation of the mandible as a result of ridge resorption caused a similar profile change of the soft-tissue chin and mandibular lip. Continuing ridge reduction resulted in a marked change of mandibular position at the 2-year stage, leading to a pronounced protrusion of the chin and mandibular lip and a more outward position of the maxillary lip.
authors.affiliation: University of Michigan School of Dentistry, Ann Arbor.
authors.forename: A
authors.initials: A
authors.lastname: Tallgren
authors.forename: B R
authors.initials: BR
authors.lastname: Lang
authors.forename: R L
authors.initials: RL
authors.lastname: Miller
mesh_terms: D016301:Alveolar Bone Loss / Q000473:pathology*; D002508:Cephalometry; D003825:Denture, Complete, Immediate; D005145:Face / Q000033:anatomy & histology*; D005500:Follow-Up Studies; D006801:Humans; D011857:Radiographic Image Interpretation, Computer-Assisted