Effect of Low Level Laser Therapy on Gingival Inflammation in Patients undergoing Fixed Orthodontic Treatment: A Randomized Clinical Trial


  • Eman Aly Department of Orthodontics and Pediatric Dentistry, National Research Centre, Cairo, Egypt
  • Hend Salah Hafez Department of Orthodontics and Pediatric Dentistry, National Research Centre, Cairo, Egypt
  • Amr Hussein Labib Department of Orthodontics, Faculty of Oral and Dental Medicine, Cairo University, Egypt
  • Tarek Abdel Hamid Harhash Department of Dentistry, National Institute for Laser Enhanced Sciences, Cairo University, Egypt
  • Mohamed Abou El-Yazeed Department of Orthodontics and Pediatric Dentistry, National Research Centre, Cairo, Egypt
  • Sylvana Gaber Department of Medical Microbiology and Immunology, Faculty of Medicine, Fayoum University, Egypt
  • Shaimaa Nasr Department of Periodontology, Faculty of Oral and Dental Medicine, Fayoum University, Egypt




low level laser, gingival inflammation, gingivitis, fixed Orthodontic treatment


AIM: The aim of this study was to compare the effect of low level laser therapy (LLLT) with non-LLLT as an adjunct to mechanical debridement in patients who develop gingival inflammation during fixed orthodontic treatment.

MATERIALS AND METHODS: Thirty subjects undergoing comprehensive fixed orthodontic treatment were randomly allocated. Split mouth design was applied for each patient, where the four quadrants were randomly allocated to receive full mouth debridement. The test group (quadrant) received three laser sessions (days 1, 3, and 5) besides debridement while the control group (quadrant) received debridement only. Both bleeding index (BI) and plaque index (PI) were measured after 1 and 3 months, while the total colony forming units (CFU) were measured after 2 and 6 weeks.

RESULTS: Clinical assessments (BI and PI) showed a statistically significant decrease at the first follow-up (after 1 month) and a slight increase in the second (after 3 months) that did not reach the base line. While, the total CFU showed a significant decrease in both follow-ups.

CONCLUSION: Laser showed superior results in the treatment of gingival inflammation induced by fixed orthodontic appliances other than debridement only.


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How to Cite

Aly E, Hafez HS, Labib AH, Harhash TAH, El-Yazeed MA, Gaber S, Nasr S. Effect of Low Level Laser Therapy on Gingival Inflammation in Patients undergoing Fixed Orthodontic Treatment: A Randomized Clinical Trial. Open Access Maced J Med Sci [Internet]. 2020 Aug. 30 [cited 2024 Apr. 21];8(D):139-45. Available from: https://oamjms.eu/index.php/mjms/article/view/4201