title: Tooth intrusion in implant-assisted prostheses.
abstract: BACKGROUND
  Numerous reports and surveys have been published on natural tooth abutment intrusion with implant-connected fixed partial dentures. The consensus of these publications was that the cause of intrusion was multifactorial, with causative factors such as disuse atrophy, debris impaction, impaired rebound memory, and mechanical binding. It was also believed that the process was irreversible.
  
  
  OBJECTIVE
  In this article, the limitations with these theories are discussed, and two patient reports of tooth intrusion reversal are reviewed. A review of the current literature is discussed, as well as the current theory of tooth movement in response to dynamic mechanical stimulus, a brief discussion of current experimental procedures and results, and the current recommendations for reversal of intrusion.
authors.affiliation: School of Dentistry, University of Southern California, Los Angeles, USA.
authors.forename: C G
authors.initials: CG
authors.lastname: Sheets
authors.forename: J C
authors.initials: JC
authors.lastname: Earthman
mesh_terms: D000539:Alveolar Process / Q000503:physiopathology; D000044:Dental Abutments; D003769:Dental Occlusion, Traumatic / Q000209:etiology* / Q000628:therapy; D017268:Dental Prosthesis Retention; D019094:Dental Prosthesis, Implant-Supported / Q000009:adverse effects*; D003799:Dental Stress Analysis; D003830:Denture, Partial, Fixed / Q000009:adverse effects*; D006801:Humans; D017090:Occlusal Splints; D014086:Tooth Mobility / Q000209:etiology* / Q000628:therapy; D014087:Tooth Movement Techniques