title: The effects of a vibrational appliance on tooth movement and patient discomfort: a prospective randomised clinical trial.
abstract: BACKGROUND
  The aim of this study was to assess the rate of tooth movement and discomfort experienced by orthodontic patients using a vibrational appliance (Tooth Masseuse).
  
  
  METHODS
  In this randomised controlled trial (RCT), 66 consecutive patients were assigned to a control or experimental group. The experimental group was instructed to use a vibrational appliance for a minimum of 20 minutes per day. All of the patients had the same fixed appliance and a 0.014 inch thermal NiTi wire during the 10 week study period. Impressions of the mandibular six anterior teeth were taken at 4 time points: at the start of treatment, 5 weeks, 8 weeks, and at 10 weeks after commencement. Little's Irregularity Index was used to record alignment and assess the rate of tooth movement. A discomfort score chart was used to evaluate patient pain levels at 5 time points.
  
  
  RESULTS
  The experimental group showed a 65% reduction in irregularity at 10 weeks, while the control group showed a 69% reduction in irregularity over the same period. No significant differences in irregularity or pain levels were observed at any of the time points between the groups.
  
  
  CONCLUSIONS
  The results demonstrate that, for 20 minute use per day, there appears to be no clinical advantage in using the vibrational appliance for the early resolution of crowding or the alleviation of pain during initial alignment.
authors.affiliation: University of Queensland Department of Orthodontics, Australia. pmiles@beautifulsmiles.com.au
authors.forename: Peter
authors.initials: P
authors.lastname: Miles
authors.forename: Heath
authors.initials: H
authors.lastname: Smith
authors.forename: Robert
authors.initials: R
authors.lastname: Weyant
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Rinchuse
mesh_terms: D000293:Adolescent; D002648:Child; D015331:Cohort Studies; D003481:Cuspid / Q000473:pathology; D003722:Dental Alloys / Q000737:chemistry; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007180:Incisor / Q000473:pathology; D008297:Male; D008310:Malocclusion / Q000473:pathology / Q000628:therapy; D009532:Nickel / Q000737:chemistry; D016910:Orthodontic Brackets; D009969:Orthodontic Wires; D010146:Pain / Q000517:prevention & control*; D010147:Pain Measurement; D011446:Prospective Studies; D013997:Time Factors; D014025:Titanium / Q000737:chemistry; D014087:Tooth Movement Techniques / Q000009:adverse effects / Q000295:instrumentation; D014732:Vibration / Q000627:therapeutic use*
chemical_list: D003722:Dental Alloys; C040654:titanium nickelide; D009532:Nickel; D014025:Titanium