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Short- and Medium-Term Effects of Low-Level Laser Therapy on Periodontal Status in Lingual Orthodontic Patients

AutorAbellán, Rosa; Gómez, C. ; Oteo, María Dolores; Scuzzo,Giuseppe; Palma,Juan Carlos
Fecha de publicación2016
EditorMary Ann Liebert
CitaciónPhotomedicine and Laser Surgery 34: 284- 290 (2016)
ResumenThe purpose of this study was to evaluate the short- and medium-term effects of low-level laser therapy (LLLT) applied in repeated doses in adults with a healthy periodontium treated by lingual orthodontic appliances. Background data: Plaque accumulation, in combination with difficulty in removing it in lingual orthodontic patients, can cause gingival inflammation. Methods: Twelve orthodontic patients scheduled for fixed lingual orthodontic treatment were selected. Clinical measurements [visible plaque index (VPI), bleeding on probing (BOP), and probing depth (PD), and collection of gingival crevicular fluid (GCF)], which was used to measure the levels of interleukin-1beta (IL-1ß) and tumor necrosis factor alpha (TNF-¿), was performed before bonding the lingual device, and at the short-term (1, 2, 3 months) and medium-term (12 months) follow-up appointments. For each patient, quadrant 1 or 2 was randomly chosen for irradiation by a diode laser (¿ = 670 nm, 190 mW, 6.05 W/cm2, 60 sec/ tooth) (Laser Group) and the contralateral quadrant was used as the Control Group. Results: In both studied groups, a slight worsening of the periodontal condition was observed, which was evident at the 3rd month follow-up and which was mainly at the lingual side in the Control Group. The levels of IL-1ß in the GCF were significantly increased in the Control Group compared with the Laser Group at the 2nd and 3rd months after bonding. At the 12th month follow-up, an improvement of the inflammation was observed in both groups in the study. Conclusions: LLLT showed short-term effects by preventing a substantial increase in IL-1ß levels. At medium-term follow-up, LLLT diminished VPI, BOP, and PD scores.
Identificadoresissn: 1549-5418
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