title: Efficacy and persistence of tooth bleaching using a diode laser with three different treatment regimens.
abstract: BACKGROUND
  Studies have measured the effectiveness of tooth bleaching, however there are very few studies that have measured the persistence in color change after a 6-month follow-up.
  
  
  OBJECTIVE
  This study assessed the efficacy of the laser bleaching process using different regimens, and the persistence of color change over a 6-month period.
  
  
  METHODS
  Sixty patients divided into three equal groups were subjected to bleaching using a diode laser with 34% hydrogen peroxide. Group 1: patients subjected to one session of laser bleaching. Group 2: patients subjected to two sessions of laser bleaching with a 1-week interval. Group 3: the same as Group 2 but followed by home bleaching once a month for 3 months. The color was assessed four times: before bleaching, directly after bleaching, 3 months after bleaching, and 6 months after bleaching.
  
  
  RESULTS
  All teeth had a significant color change at 6 months, but all teeth had regressed from the maximum value. There was significantly less regression in color for Group 3, followed by Groups 2 and 1, respectively.
  
  
  CONCLUSIONS
  The combined technique of in-office laser bleaching for two sessions with a 1-week interval, followed by home bleaching once a month for 3 months gave more persistence in color change.
  
  
  CONCLUSIONS
  In-office power bleaching using a laser assisted hydrogen peroxide system repeated after a week, combined with home bleaching once a month for 3 months, is an effective bleaching regimen with less color regression after 6 months compared to a regimen of in-office bleaching alone.
authors.affiliation: Department of Prosthetic Dentistry, Jordan University of Science and Technology, Jordan. firasq@jut.edu.jo
authors.forename: Firas A M
authors.initials: FA
authors.lastname: Al Quran
authors.forename: Yasar
authors.initials: Y
authors.lastname: Mansour
authors.forename: Sabaa
authors.initials: S
authors.lastname: Al-Hyari
authors.forename: Ahed
authors.initials: A
authors.lastname: Al Wahadni
authors.forename: Lawrence
authors.initials: L
authors.lastname: Mair
mesh_terms: D006801:Humans; D006861:Hydrogen Peroxide / Q000008:administration & dosage; D007834:Lasers; D058205:Tooth Bleaching Agents; D014075:Tooth Discoloration / Q000628:therapy*
chemical_list: D058205:Tooth Bleaching Agents; D006861:Hydrogen Peroxide