title: Changes in Maxillary Canine Pulpal Blood Flow During Dentoalveolar Distraction Osteogenesis.
abstract: OBJECTIVE
  The aim of this study was to assess the effects of dentoalveolar distraction osteogenesis (DD) on the pulpal blood flow (PBF) of maxillary canines.
  
  
  METHODS
  A laser Doppler flowmeter (LDF) was used to measure PBF in maxillary canines of 10 patients undergoing DD (study group) and 10 nonsurgical subjects who received no orthodontic treatment (control group). PBF was measured at baseline, at 4 and 7 days postoperatively, at the end of distraction and at the end of consolidation in the study group and at similar time-points in nonsurgical control subjects. Data were analyzed using paired and Student t tests, with the significance level set at 0.05.
  
  
  RESULTS
  Study findings showed that baseline PBF values did not differ significantly between groups. PBF in the control group did not vary over time; however, in the study group, an initial decrease in PBF was observed at 4 days postoperatively and was followed by a gradual increase to preoperative levels at the end of distraction.
  
  
  CONCLUSIONS
  During the DD latency period, there appears to be a short-lived ischemic phase when perfusion of pulp tissue declines; however, blood-flow returns to normal by the end of distraction.
authors.affiliation: *Department of Endodontics, Faculty of Dentistry, Bezmialem Vakif University, Istanbul †Department of Orthodontics, Center for Dental Sciences, Maresal Cakmak Hospital, Erzurum, Turkey.
authors.forename: Seyda
authors.initials: S
authors.lastname: Ersahan
authors.forename: Fidan Alakus
authors.initials: FA
authors.lastname: Sabuncuoglu
mesh_terms: D000293:Adolescent; D000328:Adult; D003481:Cuspid / Q000098:blood supply*; D003782:Dental Pulp / Q000098:blood supply*; D005260:Female; D006439:Hemodynamics; D006801:Humans; D007511:Ischemia / Q000209:etiology; D017078:Laser-Doppler Flowmetry; D008297:Male; D008312:Malocclusion, Angle Class II / Q000601:surgery*; D008437:Maxilla / Q000098:blood supply*; D019857:Osteogenesis, Distraction; D011184:Postoperative Period; D012039:Regional Blood Flow / Q000502:physiology; D012307:Risk Factors; D055815:Young Adult