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- 저자 : Gökçe Merıç (검색결과 2 건)
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Microshear bond strength according to dentin cleansing methods before recementation
Simge Taşar,Mutahhar Muhammed Ulusoy,Gökçe Merıç 대한치과보철학회 2014 The Journal of Advanced Prosthodontics Vol.6 No.2
PURPOSE. The aim of this study was to determine the efficiency of Erbium, Chromium: Yttrium-Scandium-Gallium-Garnet laser in different output powers for removing permanent resin cement residues and therefore its influence on microshear bond strength compared to other cleaning methods. MATERIALS AND METHODS. 90 extracted human molars were sectioned in 1 mm thickness. Resin cement was applied to surface of sliced teeth. After the removal of initial cement, 6 test groups were prepared by various dentin surface treatment methods asfollows: no treatment (Group 1), ethylene diamine tetra acetic acid application (Group 2), Endosolv R application (Group 3), 1.25 W Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet laser irradiation (Group 4), 2 W Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet laser irradiation (Group 5) and 3.5 W Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet laser irradiation (Group 6). The topography and morphology of the treated dentin surfaces were investigated by scanning electron microscopy (n=2 for each group). Following therepetitive cementation, microshear bond strength between dentin and cement (n=26 in per group) were measured with universal testing machine and the data were analyzed by Kruskal Wallis H Test with Bonferroni correction (α<.05). Fracture patterns were investigated by light microscope. RESULTS. Mean microshear bond strength ± SD (MPa) for each group was 34.9 ± 17.7, 32.1 ± 15.8, 37.8 ± 19.3, 31.3 ± 12.7, 44.4 ± 13.6, 40.2 ± 13.2 respectively. Group 5 showed significantly difference from Group 1, Group 2 and Group 4. Also, Group 6was found statistically different from Group 4. CONCLUSION. 2 W and 3.5 W Erbium, Chromium: Yttrium-Scandium-Gallium-Garnet laser application were found efficient in removing resin residues.
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The protective effect of Myrtus communis L. against experimental kidney stone in rats
Halil Yılmaz,Nihat Ekinci,Ayşe Ömerli,Mehtap Nisari,Arzu Hanım Yay,Harun Ülger,Karatoprak Gökçe Şeker,Seher Yımaz,Şükrü Ateş,Mustafa aştan 경희대학교 융합한의과학연구소 2023 Oriental Pharmacy and Experimental Medicine Vol.23 No.1
The aim of this study is to investigate the protective effect of 70% methanolic extract of Myrtus communis L. leaves (300 mg/kg) against the kidney stone modeling created by (0.75%) ethylene glycole. Twenty-eight, 10 week’s Sprague Dawley male rats were divided into four groups (n = 7) as the control group, ethylene glycol (EG) group, M. communis (MC) group and protective (EG + MC) group. For 28 days, while 0.75% EG was given by adding it to drinking water to occur kidney stone model, MC was given by gavage to test the protective effect. 24 h’ urine samples were taken, and calcium, creatinine, uric acid, magnesium, citrate and oxalate were evaluated. On the 28th day, the rats were sacrificed, and their kidneys were removed. Kidney tissues were examined with hematoxylin eosin (HE) staining and kidney stones formed with Pizzolato’s (PZ) staining technique were shown. M. communis extract brought abnormal urine parameter values closer to the control group. Additionally, it was concluded that the tissue degeneration and number of stones decreased in the protective group. M. communis extract has a protective effect against the kidney stone modeling which created by EG.
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