%0 Generic %A GRANDO, Matheus %A PACHECO, Lívia Muniz %A BOTEGA, Daniela Maffei %A HIRAKATA, Luciana Mayumi %A HILGERT, Juliana Balbinot %D 2018 %T Artificial teeth: evaluation of wear resistance, microhardness and composition %U https://scielo.figshare.com/articles/dataset/Artificial_teeth_evaluation_of_wear_resistance_microhardness_and_composition/7518380 %R 10.6084/m9.figshare.7518380.v1 %2 https://scielo.figshare.com/ndownloader/files/13978322 %2 https://scielo.figshare.com/ndownloader/files/13978325 %2 https://scielo.figshare.com/ndownloader/files/13978328 %2 https://scielo.figshare.com/ndownloader/files/13978331 %2 https://scielo.figshare.com/ndownloader/files/13978340 %2 https://scielo.figshare.com/ndownloader/files/13978346 %K Acrylic resins %K Artificial teeth %K Hardness %X

Objective: To evaluate the Knoop hardness, composition, and wear resistance of acrylic-resin artificial teeth exposed to mechanical toothbrushing. Methods: Artificial teeth from three commercial brands - Biotone, Trilux, and Soluut PX - were used. From each brand, 10 teeth were selected for wear evaluation after mechanical brushing, 10 for microhardness testing, and 5 for composition analysis. Specimens underwent 55,000 brushing cycles, under a 200-g load and at a frequency of 250 cycles per minute, using a soft-bristled toothbrush (IndicatorPlus 30, Oral-B) soaked in a 1:1 toothpaste/water slurry (Oral B Pró Saúde). Microhardness testing was performed using a 25-g load for 15 seconds in an HMV-2 hardness tester (Shimadzu). The composition of teeth from different brands was determined by scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM/EDS) (Jeol JSM 5800). Results: Wear results after mechanical brushing were compared by means of the paired t-test, whereas those obtained in microhardness testing were compared by ANOVA with Bonferroni correction. There was no statistically significant difference between brands in either trial. Conclusion: Composition analysis revealed that all of the artificial teeth analyzed contain carbon and oxygen. Trilux and Soluut PX brand teeth also contain silicon; however, the presence of filler particles did not result in increased resistance.

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