Browsing by Author "Sirin, FB"

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    Influence of omega-3 fatty acid on orthodontic tooth movement in rats: A biochemical, histological, immunohistochemical and gene expression study
    Ogrenim, G; Cesur, MG; Onal, T; Kara, M; Sirin, FB; Yalcin, GD; Inan, S
    Structured Abstract Objective The aim of this study was to investigate the effects of omega-3 fatty acids on orthodontic tooth movement. Setting and Sample Population For this study, 56 12-week-old adult male Wistar albino rats from the Animal Laboratory at Adnan Menderes University, Faculty of Medicine, were used. Material and Methods Rats were randomly divided into seven groups (n = 8 each): control group (without any treatment), tooth movement groups (three groups of animals with only tooth movement) and omega groups (three groups of animals with tooth movement and omega-3 administration). Omega-3 fatty acids were administered to the rats systemically during the tooth movement period. On the 3rd, 7th and 14th days after the orthodontic tooth movement, the rats were sacrificed and biochemical, histological, immunohistochemical andgene expression examinations were performed. Results On the 14th experimental day, the amount of tooth movement in the omega groups was significantly lower than the tooth movement groups (P = 0.012). Biochemical experimentsshowed that the omega groups had significantly lower total oxidant levels and higher total antioxidant levels compared to the tooth movement group on the 14th experimental day (P = 0.001). The levels of RANKL, IL-6 and IL-1 beta in the omega groups were significantly lower than the tooth movement groups on all experimental days (P < 0.05). Conclusion Systemic administration of omega-3 fatty acids showed antioxidant and antiinflammatory effects and decelerate the orthodontic tooth movement.
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    Histological and Biochemical Investigation of the Effects of Low Intensity Pulsed Ultrasound on Orthodontic Tooth Movement
    Cesur, MG; Onal, T; Bilgin, MD; Sirin, FB; Inan, S; Koken, EC; Alkan, A; Cesur, G
    Objective: The goal of our study is to assess the effects of low intensity pulsed ultrasound on orthodontic tooth movement in rats. Methods: For this study, 40 adult male Wistar albino rats (12-weeks old age) were used from the Animal Laboratory at Adnan Menderes University. Rats were divided into four groups each of ten. Group 1 was the untreated as a control. In group 2, an orthodontic spring was used to move teeth. For groups 3 and 4, orthodontic treatment was combined with low intensity pulsed ultrasound at 16 J/cm2 or 48 J/cm2 for 14 days, respectively. Tooth movement was measured at the last day of treatment. Serum bone alkaline phosphatase (BALP) and C-telopeptide type I collagen (CTX-I) levels were analyzed biochemically. The number of osteoclasts, osteoblasts and inflammatory cells, capillary density and new bone formation was determined histologically. Receptor activator of nuclear factor-kappa B ligand (RANKL), osteoprotegerin (OPG), vascular endothelial growth factor (VEGF) and transforming growth factor-beta (TGF-beta) were assessed using immunohistochemical staining. Results: BALP and CTX-I levels in group 4 were significantly higher compared to control (p<0.05). Tooth movement and the number of osteoclasts, inflammatory cells and capillary density in group 4 were significantly greater than group 2 (p<0.05). The intensity levels of RANKL and OPG in group 4 were significantly greater than group 2 (p<0.05). Conclusions: Ultrasound is a noninvasive application and promising therapy for accelerating bone remodelling during orthodontic tooth movement.