The Effect of Toothbrushing Duration on Nickel Chromium Alloy Wear
Sri Budi Barunawati(1*), Siti Sunarintyas(2), Rini Dharmastiti(3)
(1) Department of Prosthodontic Faculty of Dentistry Universitas Gadjah Mada, Yogyakarta
(2) Department of Biomaterial Faculty of Dentistry Universitas Gadjah Mada, Yogyakarta
(3) Department of Mechanical Engineering Faculty of Dentistry Universitas Gadjah Mada, Yogyakarta
(*) Corresponding Author
Abstract
as the simulation of 2, 5, 8, and 10 years tooth brushing. Surface roughness and weight difference as abrasion indicator were measured and analyzed using one-way ANOVA followed by LSD test. Tooth brushing duration of 2, 5, 8, and 10 years increased nickel-chromium alloy surface roughness (Ra) by 0.16, 0.39, 0.43, and 0.56µm with weight loss of 8%, 15%, 23%, and 32 %, respectively. These differences were statistically significant (p <0.05). The result of LSD test showed a significant effect (p <0.05) between groups of toothbrushing duration. The increase of surface roughness affects the increase of wear volume of nickel-chromium alloy indicated by R = 0.11 for brushing duration of 2, 5, 8, and 10 years. The conclusion of this study was 10 years tooth brushing promoted wear on nickelchromium alloy, which
was indicated by the increase in surface roughness and weight loss.
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DOI: https://doi.org/10.22146/theindjdentres.65713
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