LABORATORY EXAMINATION OF SURFACE ROUGHNESS AND WEIGHT LOSS OF TWO TYPES OF CONVENTIONAL COMPOSITES (GRANDIO AND TETRIC N CERAM) AND BULK FILL (X-TRA FILL AND TETRIC N CERAM BULK FILL) AFTER TOOTHBRUSHING TEST
DOI:
https://doi.org/10.32461/2226-3209.3.2018.171928Ключові слова:
composite, Bulk fill, loss weight, superficial violence.Анотація
Abstract. Introduction: The long-term clinical success of composite materials depends on physical and chemical properties such as surface smoothness and preservation of integrity in the oral environment. The aim of this study was to evaluate the surface roughness and weight loss of two types of bulk fill and conventional composites (Tetric N Ceram and Grandio) and Tetric N Ceram and X-tra fill after a Toothbrushing Test. Method: In this experimental study, 28 disc shaped samples (7 samples of each composite) were made using a two-piece metal cylinder (in thickness of 2 mm and 10 mm in
diameter). Each composite sample from the upper part was overlap cured by the manufacturer in accordance with the manufacturer's instructions. At first, initial surface roughness was measured by the prophylometric machine and the initial weights of the samples were measured by a digital scale. The specimens were then abrasive in the Toothbrushing Test machine with 2000 cycles. After this stage, the secondary surface roughness and the weight of the specimens were remeasured. Data analysis was performed using SPSS software version 20 and data were analyzed by two way ANONA and
Tukey test and a significant level of P <0.05 was determined. Results: Tetric N Ceram bulk fill composites showed the highest and granitic composites showed the slightest surface roughnessafter the Toothbrushing Test. Compared to conventional and bulk fill composites, the highest increase in was observed in Balkh composites. Conclusion: The results of this study indicate that surface roughnessin bulk fill composites after brushing is more than conventional types. The size of the filler and the size of the filler particles are also the variables that affect on the superficial violence.
Keywords: composite, Bulk fill, loss weight, superficial violence.
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