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CC BY 4.0 · Eur J Dent 2022; 16(04): 875-879
DOI: 10.1055/s-0041-1741373
Original Article

Efficacy of Rice Husk Nanosilica as A Caries Treatment (Dentin Hydroxyapatite and Antimicrobial Analysis)

Iffi Aprillia
1   Department of Conservative Dentistry, Faculty of Dentistry, Universitas Indonesia, Jakarta, Indonesia
,
Sylva Dinie Alinda
1   Department of Conservative Dentistry, Faculty of Dentistry, Universitas Indonesia, Jakarta, Indonesia
,
Endang Suprastiwi
1   Department of Conservative Dentistry, Faculty of Dentistry, Universitas Indonesia, Jakarta, Indonesia
› Author Affiliations Funding This research was funded by University of Indonesia through PUTI Grant with contract number BA-631/UN2.RST/PPM.00.03.01/2021.
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Abstract

Objective Rice husk nanosilica has a porous, amorphous structure with a silica (SiO2) surface. Silica interacts with calcium ions to form hydroxyapatite and can induce the formation of reactive oxygen species (ROS), which harm microorganisms. This research determines the effect of rice husk nanosilica on the increase in dentin hydroxyapatite and its antimicrobial effects against Streptococcus mutans.

Materials and Methods We divided 27 dental cavity samples into three groups (n = 9). Group 1: normal dentin, Group 2: demineralized dentin, Group 3: demineralized dentin treated with rice husk nanosilica. The samples were analyzed using X-ray diffraction (XRD) to evaluate the formation of dentin hydroxyapatite. To analyze the viability of S. mutans after exposure to 2% nanosilica rice husk, we conducted an antimicrobial MTT assay.

Statistical Analysis The Kruskal–Wallis test evaluates the formation of dentin hydroxyapatite, and the t-test evaluates the viability of S. mutans.

Results There was an increase in the amount of dentin hydroxyapatite after the application of rice husk nanosilica compared with the control group (normal dentin), and 2% rice husk nanosilica had an antimicrobial effect (p < 0.005) in the group exposed to it.

Conclusion Rice husk nanosilica can induce the formation of dentin hydroxyapatite and has antimicrobial effects.

Keywords

nanosilica - rice husk - hydroxyapatite - Streptococcus mutans - antimicrobial


Publication History

Article published online:
21 June 2022

© 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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