title: Remodeling of alveolar bone crest after molar intrusion with skeletal anchorage system in dogs.
abstract: BACKGROUND
  The aim of this study was to clarify the influence of supra-alveolar fibers on alveolar bone crest remodeling when several teeth are intruded simultaneously.
  
  
  METHODS
  The skeletal anchorage system was used to bilaterally intrude the second and third premolars of 10 beagles; supracrestal fiberotomies were performed on 1 side only.
  
  
  RESULTS
  The amount of intrusion was greater and the amount of alveolar bone resorption was smaller in the fiberotomy group compared with the nonfiberotomy group. The health status (pocket depth <3 mm) of the dentogingival unit was maintained in the nonfiberotomy group during the experimental period. In the fiberotomy group, the number of osteoclasts on the marginal alveolar crest was less than in the nonfiberotomy group. The dense fiber bundles connecting the second and third premolars and the gingival attachments were maintained in the nonfiberotomy group.
  
  
  CONCLUSIONS
  Pressure from the supra-alveolar fibers generated by segmental molar intrusion with the skeletal anchorage system induced alveolar bone crest resorption and remodeling, and, as a result, it prevented deepening of the gingival pocket. Periodontal status was good during tooth intrusion.
authors.affiliation: Division of Orthodontics and Dentofacial Orthopedics, Department of Oral Health and Development Sciences, Graduate School of Dentistry, Tohoku University, Sendai, Japan. rkanzaki@mail.tains.tohoku.ac.jp
authors.forename: Reiko
authors.initials: R
authors.lastname: Kanzaki
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Daimaruya
authors.forename: Ichiro
authors.initials: I
authors.lastname: Takahashi
authors.forename: Hideo
authors.initials: H
authors.lastname: Mitani
authors.forename: Junji
authors.initials: J
authors.lastname: Sugawara
mesh_terms: D016301:Alveolar Bone Loss / Q000503:physiopathology*; D000539:Alveolar Process / Q000166:cytology / Q000502:physiology*; D000818:Animals; D001641:Bicuspid; D016723:Bone Remodeling / Q000502:physiology*; D004285:Dogs; D005260:Female; D008336:Mandibular Diseases / Q000503:physiopathology; D052280:Orthodontic Anchorage Procedures / Q000379:methods*; D010513:Periodontal Ligament / Q000502:physiology* / Q000601:surgery; D013997:Time Factors; D014087:Tooth Movement Techniques / Q000295:instrumentation / Q000379:methods