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http://dx.doi.org/10.4041/kjod.2018.48.2.90

Effects of single-dose, low-level laser therapy on pain associated with the initial stage of fixed orthodontic treatment: A randomized clinical trial  

Qamruddin, Irfan (Department of Orthodontics, Baqai Dental College, Baqai Medical University)
Alam, Mohammad Khursheed (Orthodontic Department, College of Dentistry, Aljouf University)
Abdullah, Habiba (Department of Orthodontics, Baqai Dental College, Baqai Medical University)
Kamran, Muhammad Abdullah (Department of Orthodontics, Liaquat College of Medicine and Dentistry)
Jawaid, Nausheen (Department of Orthodontics, Baqai Dental College, Baqai Medical University)
Mahroof, Verda (Department of Orthodontics, Baqai Dental College, Baqai Medical University)
Publication Information
The korean journal of orthodontics / v.48, no.2, 2018 , pp. 90-97 More about this Journal
Abstract
Objective: The aim of this study was to assess the analgesic effect of a single application of low-level laser therapy (LLLT) on spontaneous pain and pain on chewing after placement of initial archwires. Methods: Forty-two patients (26 women, 16 men) were randomly recruited for this split-mouth randomized clinical trial. Each patient received super-elastic nickel-titanium (NiTi) initial archwires (0.012, 0.014, 0.016, and 0.018-inch [in]) in the maxilla for leveling and alignment for an interval of 4 weeks between archwires. One side of the mouth was randomly designated as experimental, while the other side served as placebo. After insertion of each archwire, the experimental side was irradiated with a diode laser for 3 seconds each on 5 points facially and palatally per tooth, from the central incisor to first molar. On the placebo side, the laser device was held the same way but without laser application. A numerical rating scale was used to assess the intensity of spontaneous and masticatory pain for the following 7 days. The Mann-Whitney U test was used to compare pain scores between sides. Results: Patients in the LLLT group exhibited significantly lower mean scores for spontaneous pain after insertion of the initial two archwires (0.012-in and 0.014-in NiTi; p < 0.05), while there was no significant difference for 0.016-in and 0.018-in wires between the LLLT and placebo groups. LLLT significantly reduced chewing pain scores (p < 0.05) for all archwires. Conclusions: A single dose of LLLT considerably lessened postoperative pain accompanying the placement of super-elastic NiTi wires for initial alignment and leveling.
Keywords
Low-level laser therapy; Single dose; Alignment and leveling; Pain;
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