(Ortodonti Anabilim Dalı, Ankara Yıldırım Beyazıt Üniversitesi Diş Hekimliği Fakültesi, Ankara, Türkiye)
Yeşim KAYA
(Yüzuncu Yıl Üniversitesi Diş Hekimliği Fakültesi Ortodonti Anabilim Dalı, Van, Türkiye)
(Yüzuncu Yıl Üniversitesi Diş Hekimliği Fakültesi Ortodonti Anabilim Dalı, Van, Türkiye)
(Sağlık Hizmetleri Meslek Yüksekokulu, Van, Türkiye)
Yıl: 2021Cilt: 34Sayı: 1ISSN: 2528-9659 / 2148-9505Sayfa Aralığı: 26 - 30İngilizce

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Effect of Low-Level Laser Therapy on Peri-Miniscrew Fluid Prostaglandin E2 and Substance P Levels: A Controlled Clinical Trial
Objective: This study aims to evaluate the effect of low-level laser therapy on peri-miniscrew fluid prostaglandin E2 (PGE2) and sub- stance P (SP) levels during orthodontic treatment. Methods: A total of 15 individuals were included in this study. Miniscrews were inserted to the inter-radicular region of the maxillary right and left second premolar and the first molar teeth, and diode lasers were randomly applied to the right or left side. Irradiation was performed at 940 nm wavelength using a gallium-aluminum-arsenide diode laser with 100 mW power output, 0.125 cm2 spectral area, 8 J/cm2 energy density, and 10 seconds of exposure time. Peri-miniscrew fluid samples were collected on the 1st, 3rd, and 7th days, and PGE2 and SP levels were assessed. For statistical comparison, two-way (factors) analysis of variance with repeated measure- ments on one-factor levels was used at statistical significance (p) of <0.05. Results: PGE2 levels on the 1st, 3rd, and 7th days were 160.64±10.05, 135.17±37.18, and 98.57±22.94, respectively, in the control group and 150.75±9.08, 87.17±40.67, and 78.10±16.50, respectively, in the laser group. SP levels on the 1st, 3rd, and 7th days were 79.90±12.05, 64.61±10.05, and 70.05±9.10, respectively, in the control group and 76.32±11.39, 60.25±9.08, and 65.71±5.59, respec- tively, in the laser group. The differences in PGE2 and SP levels between the laser and control groups were not statistically significant at all time intervals. Conclusion: Low-level laser therapy cannot be recommended as a clinical adjunct therapy to reduce inflammation and pain around the miniscrews
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