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Effects of Low-Level Laser Therapy in Orthodontic Patients on Immediate Inflammatory Response After Mini-Implants Insertion: A Preliminary Report

2016; Mary Ann Liebert, Inc.; Volume: 35; Issue: 1 Linguagem: Inglês

10.1089/pho.2015.3959

1557-8550

Mario S. Yanaguizawa, Selly Sayuri Suzuki, Elizabeth Ferreira Martinez, Hideo Suzuki, Maria Cristina J. Pelegrin, Aguinaldo Silva Garcez,

Dental materials and restorations

The primary stability of a mini-implant is crucial to treatment sequence since most orthodontic mini-implant failures occur at an early stage. Irritation or inflammation of peri-implant tissues has been related to decreasing mini-implant success.This study evaluates the effect of low-level laser therapy on initial inflammation after orthodontic mini-implants installation.Ten volunteers received two mini-implants (1.3 mm diameter, 7 mm length). One mini-implant was inserted on each side of the maxilla following manufacturer recommendation. On the right side, low-level laser therapy (LLLT) was applied (diode laser 660 nm, 40 mW, 1 min, 2.4 J of total energy). Peri-implant crevicular fluid (PGF) was obtained after 24 h (T1), 48 h (T2), and 72 h (T3) to identify levels of interleukin (IL)-6 and IL-8 around mini-implants and around upper first premolars.An increase in interleukin levels was observed for both groups, compared to upper first premolar. PGF around nonirradiated mini-implants showed higher levels of IL-8. Levels of IL-6 24 h after mini-implant insertion were higher for laser group.LLLT modulates the initial inflammation after the insertion of mini-implant, possibly increasing the mini-implant success prognostic and decreasing patient discomfort.