35
Participants
Start Date
April 30, 2014
Primary Completion Date
January 31, 2022
Study Completion Date
September 30, 2022
low-level laser therapy
The test teeth will receive LLLT using a 940 nanometer diode laser (EZLASE; BIOLASE Technology Inc., Irvine, CA, USA) with output power of 330 milliwatt. The experimental side was irradiated for 30 s in two sessions, delivering an energy density of 7 Joules per square centimeter.
orthodontic treatment
Orthodontic treatment will be carried out using preadjusted appliances with bonded 0.022×0.028-square inch brackets/buccal tubes and 0.014-inch NiTi archwires as the first archwires. The treatment or the major part of the treatment will be completed in 12 months.
The Prince Philip Dental Hospital, Hong Kong
The University of Hong Kong
OTHER