Goal:
06 - Temiz Su ve Sanitasyon

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AMAÇ 6: TEMİZ SU VE SIHHİ KOŞULLAR Herkes için erişilebilir su ve atık su hizmetlerini ve sürdürülebilir su yönetimini güvence altına almak Su kıtlığı, dünya genelinde insanların %40’tan fazlasını etkiliyor; iklim değişikliği sonucunda küresel ısınma nedeniyle, zaten kaygı verici düzeyde olan bu oranın daha da yükseleceği tahmin ediliyor. 1990 yılından bu yana 2,1 milyar insanın daha iyi su ve sıhhi koşullara erişmesi sağlanmış olmakla birlikte, güvenli içme suyu kaynaklarının azalması, tüm kıtaları etkileyen büyük bir sorundur.

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Author: Ademci, K. Ebru ×

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    Effects of Water Flow Rate on Shear Bond Strength of Orthodontic Bracket Bonded to Enamel Surface After Er:YAG Laser Ablation
    (2013-10-01T00:00:00Z) Topcuoglu, Tolga; Oksayan, Ridvan; Ademci, K. Ebru; GÖYMEN, MERVE; Usumez, Serdar; Usumez, Aslihan
    Objective: The aim of present study was to evaluate the effect of water flow rate on enamel surface roughness and shear bond strength (SBS) of orthodontic brackets after Er:YAG laser ablation. Background data: It is well known that external water supply is a fundamental requirement for Er:YAG laser efficiency on dental hard tissues. However, there is no consensus considering the water flow rate used during Er:YAG laser ablation. Methods: Eighty sound human upper premolar teeth were used in the present study. Seventy-six teeth were assigned into four groups according to surface treatments. The 37% phosphoric acid-etched group served as the control. Er:YAG laser irradiation was performed in three subgroups with water flow rates of 25, 36, and 48mL/min, respectively. All specimens were subjected to a SBS test. One specimen from each different surface treatment modality was examined by scanning electron microscopy. Kruskal-Wallis test was used to compare the SBS value of each group. Results: Although the control group had the highest SBS value, statistically no significant differences were found among groups. Conclusions: Er:YAG laser application with a water flow rate of 48mL/min produced better enamel surface alterations without any thermal damage to yield higher SBS values.