title: The Effect of Using a Modified Dentoalveolar Distractor on Canine Angulation following Rapid Canine Retraction: A Split-mouth Design Randomized Controlled Trial.
abstract: OBJECTIVE
  New studies have been published and aimed to retract canines by means of distraction osteogenesis to reduce treatment time. Although a great care has been given to achieve a bodily movement of the canines, a significant amount of tipping of the canines has been observed. This trial aimed to assess the effect of applying a modified distractor on canine angulation.
  
  
  METHODS
  The sample of the study consisted of 14 canines in seven patients (16-25 years). After the osteotomy procedure, two distractors were applied (one distractor on each side). After 5 days of a latency period, the two distractors were activated at a rate of 1 mm/day.
  
  
  RESULTS
  There was a significant difference between the two distractors regarding the time required to retract the canines (p = 0.008) and the observed change in canine angulation following retraction (p = 0.028). The change in the overjet and the mandibular plane angle was statistically insignificant. Eight out of 14 distracted canines reacted positively to the pulp vitality tester after 3 months of completion of distraction. There was no clinical sign of discoloration or pulpal pain in any canine.
  
  
  CONCLUSIONS
  Within the limits of this study, the modified distractor caused a bodily movement of the canine with a minimal tipping. Further research is required on a long-term basis on a larger group of patients to gain more insight on the observed changes.
authors.affiliation: Oral and Maxillofacial Surgery Department, University of Damascus Dental School, Damascus, Syria.
authors.forename: Khaled I
authors.initials: KI
authors.lastname: Al-Ainawi
authors.affiliation: Oral and Maxillofacial Surgery Department, University of Damascus Dental School, Damascus, Syria.
authors.forename: Yaser
authors.initials: Y
authors.lastname: Al-Mdalal
authors.affiliation: Associate Professor, Orthodontic Department, University of Damascus Dental School, Damascus, Syria, Phone: +963940404840 e-mail: myhajeer@gmail.com.
authors.forename: Mohammad Y
authors.initials: MY
authors.lastname: Hajeer
mesh_terms: D000293:Adolescent; D003481:Cuspid; D005145:Face; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000628:therapy*; D009055:Mouth; D019857:Osteogenesis, Distraction; D055815:Young Adult
keywords: Dentoalveolar distraction; Distractor; Rapid canine retraction; Tooth vitality. How to cite this article: The Effect of Using a Modified Dentoalveolar Distractor on Canine Angulation following Rapid Canine Retraction: A Split-mouth Design Randomized Controlled Trial. J Contemp Dent Pract 2016;17(1):49-57. Source of su