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    Antibacterial glass films prepared on metal surfaces by sol-gel method
    (Springer, 2010) Kiraz, Nadir; Kesmez, Omer; Burunkaya, Esin; Budama, Leyla; Acar, Burcin; Asilturk, Meltem; Camurlu, H. Erdem
    This paper describes the preparation and characterization of glass films consisting of SiO2, Li2O, Na2O, K2O or MgO in varying compositions on stainless steel and aluminum substrates by sol-gel method. Silver phosphate or silver incorporated zeolite was also introduced into the sols for obtaining antibacterial effect. The SiO2/Li2O/Na2O system having the composition of 85:5:10 wt% was found as the optimum for obtaining a stable sol and film formation. The films were investigated by scanning electron microscopy (SEM) and electron dispersive analysis by X-ray (EDX), Fourier transformed infrared (FTIR) spectroscopy, thermo-gravimetric analysis (TGA) and differential thermal analysis (DTA). Homogenous films having 300 +/- A 20 nm thicknesses were formed by spin coating and then by curing at 500 A degrees C for 1 h. Obtained films had high adherence to the metal substrates and they were also durable in acidic, basic or NaCl environments. They also presented a powerful antibacterial effect against E. coli.
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    Effect of different doses of radiation on morphogical, mechanical and chemical properties of primary and permanent teeth-an in vitro study
    (Bmc, 2020) Duruk, Gulsum; Acar, Burcin; Temelli, Oztun
    Background Radiotherapy, applied to the head and neck region, can cause radiation side effects such as reduction of saliva and radiation caries. The aim of this study was to perform an in vitro assessment of the effects of radiation therapy on the morphological, mechanical, and chemical properties of primary and permanent teeth. Methods One hundred four extracted human teeth (52 impacted wisdom teeth, 52 primary molar teeth) were used. The teeth were divided into two parts in the mesiodistal direction. Of the 98 teeth, the vestibular sections were used for the vickers analysis and lingual sections were used for the Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) analysis. The teeth in the experimental group were fixed to wax models. Each model had an equal number of teeth (n = 7). The doses were applied to the teeth for 6 weeks; 5 week days and 2Gy daily. After the radiotherapy was conducted weekly, a wax model was taken from radiation reception. Along with the elemental contents (Na, K, Mg, P, and Ca) of the teeth, enamel and dentin microhardness was evaluated, and SEM analyzes were performed on 6 teeth. Results Radiation caused a decrease in microhardness of enamel and dentin (p < 0.05). In the elemental analysis by ICP-OES, it was observed that there were decreases in all elements after 60Gy compared to the control group (p < 0.05). In the experimental groups, amorphous structures were encountered in SEM images. Conclusions Radiation has negative effects on the teeth structure and additional studies are needed in this regard. This study indicates that radiotherapy patients are at a higher risk for dental caries.
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    Turkish Pediatricians' Awareness of Children's Oral Health
    (Amer Acad Pediatric Dentistry, 2021) Duruk, Gulsum; Acar, Burcin
    Purpose: To assess the level of knowledge about the common approaches to children's oral and dental health in a sample of Turkish pediatricians. Methods: A total of 130 pediatricians responded to an 18-question electronic survey about their personal information and knowledge about children's oral health. The data obtained were analyzed using the Mann-Whitney U, Kruskal-Wallis, and multiple linear regression analysis tests. Results: The mean pediatricians' knowledge score was 7.99 +/- 1.67 (range: zero to 11) and the median score was eight. There were no statistically signification relationships between the pediatricians' mean knowledge, their sociodemographic factors and their educational background about children's oral health. Conclusion: Turkish pediatricians need more pediatric oral health education.