The Effects of Charcoal Toothpaste on Microhardness and Surface Roughness of Nanofilled, Micro hybrid Resin Composite and Resin Modified Glass Ionomer

Document Type : Original Article

Authors

Conservative Dentistry, Faculty of Dentistry, Egyptian Russian University, Cairo, Egypt

Abstract

This study evaluated the effects of charcoal toothpaste on the microhardness and surface roughness of nanofilled, micro hybrid resin composite and resin modified glass ionomer. A total of 120 samples (40 samples per each material). Group A: forty samples were fabricated from Z350 XT (nanofilled) resin composite samples. Group B: forty samples were fabricated from a Z250 (micro filled) resin composite. Group C: forty samples were fabricated from Fuji II. The samples of each group were divided into 2 halves (n=20) according to the testing method microhardness and surface roughness (Ra) then subdivided according to toothpaste used close up diamond attraction (charcoal) and close up everfresh (conventional) into 2 halves (n=10). All groups showed a decrease in surface microhardness with no statistically significant difference between groups A and B (p> 0.05), while Group C showed the highest reduction in surface microhardness with a statistically significant effect (p < 0.05). All tested groups showed an increase in the surface roughness values, while Group A recorded the least change in surface roughness (0.215), followed by Group B (0.269), and then Group C (0.320). Charcoal-based toothpaste decreased surface microhardness and increased the surface roughness of the three restorative materials compared to conventional toothpastes.

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ERU Research Journal
Volume 3, Issue 2
April 2024
Pages 1188-1199

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