Özet:

Purpose: The purpose of this study is to study the effects of dental pasta with different chemical structures on the surface smoothness of feldspatic porselen. Tool and Method: In the work, a total of 40 porselain samples were used in the form of a disk. After the surface finish and curve processes of the samples, the smoothness was measured and recorded with the profilometer device and was randomly divided into four groups. The sample surfaces were washed for four different chemical structures with a toothpaste and an electronic toothbrush for two hours in a way that would equal a total of a month, twice a day for two minutes. At the end of the first month, the surface smoothness was measured and recorded again with the profilometer. The statistical assessment of the data was made using variance analysis. Results: Varyans analysis results showed that toothpaste in different chemical structures significantly increased the surface smoothness of feldspatic porcelain (p<0.05). The highest smoothness value (2.60 ± 0.48 μm) was found in the black color code of the toothpaste, while the low smoothness value (1.96 ± 0.43 μm) was found in the red color code of the toothpaste. Result: According to the obtained data, the result was that the toothpaste increased the surface smoothness of feldspatic porselen, and this increase could also change depending on the chemical content of the toothpaste. Keywords: Toothpaste, porcelain, surface smoothness EFFECT OF DIFFERENT CHEMICAL COMPOSITION TOOTHPASTES ON SURFACE ROUGHNESS OF FELDSPATHIC PORCELAIN ABSTRACT Aim: The aim of this study was to evaluate the effect of different chemical composition toothpastes on surface roughness of feldspathic porcelain. Material and Methods: Total, 40 disc-shaped porcelain specimens were used in this study. After the surface polishing, the surface roughness of specimens was measured by a profilometer and divided into four groups randomly. The surface of specimens was brushed two hours instead of two times a day through two minutes for a month by electric toothbrush and toothpastes, which have four different chemical compositions. After a month the surface roughness was measured by a profilometer again and recorded. The statistically obtained data were performed with repeated measurement analysis of variance test. Results: The results of variance test showed that statistically significant differences between different chemical composition toothpastes on surface roughness of feldspathic porcelain (p<0.05). The highest surface roughness value (2.60 ± 0.48 μm) was identified in black color code toothpaste, the lowest surface roughness value (1.96 ± 0.43 μm) was identified in red color code toothpaste. Conclusion: The obtained data presented that, the toothpaste have increased the surface roughness of feldspathic porcelain and this increasing has changed depending on the chemical composition of toothpaste. Keywords: toothpaste, porcelain, surface roughness

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