EFFECTS ON THE SURFACE HARDNESS AND SURFACE ROUGHNESS OF RESTORATIVE MATERIALS AND ENAMEL OF DAILY CONSUMED FOODS AND BEVERAGES

Purpose: the purpose of this study was to investigate the effect of potentially erosive foods and beverages on the surface characteristics of pediatric restorative materials, primary and permanent enamel. material and methods: in this study, coca cola, buttermilk, orange juice, strawberry and yogurt were used as acidic food and beverages. while filtek z-250, fuji ix, fuji ii lc and dyract extra were used as restorative materials, primary and permanent teeth were used for enamel samples. 600 restorative material samples, the diameter of which are 5mm and the thickness of which are 2mm and 300 enamel samples were prepared from each material. measuring the initial ph of the drinks used in the study. each sample was immersed in those solutions for 10 seconds, then washed for 10 seconds with distilled water and this process was least repeated 40 times for each period to 24 hour. the control group samples were stored at % 0,9 isotonic sodium chloride without subjecting to any cycling. results: all the materials used in this study showed different surface hardness and surface roughness values in different environments. a significant change was not observed with surface hardness and roughness values of all materials in %0,9 isotonic sodium chloride from the beginning until the end of 6th month (p>0.01). the samples immersed in coca cola and orange juice showed the most affected surface hardness and roughness. the most affected material was identified as the fuji ix. the least surface alterations were found with permanent teeth in all immersion materials. the data were statistically analized by analysis of variance (anova). conclusion: it was concluded that the erosive food and drinks affect the surface characteristics of materials and teeth in different degrees. but such studies must be supported by in vivo studies.