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In situ Effects of Nanohydroxyapatite Paste Derived from Chicken Eggshell on Tooth Enamel During Two Bleaching Regimens
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| Author:
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NURHAYATY NATSIR1*, 2,, MARIA TANUMIHARDJA, AMELIA SEBON, HAFSAH KATU, JUNI J NUGROH, LUKMAN M
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| Abstract:
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Bleaching refers to tooth whitening through the application of chemicals to the tooth surface, to oxidize organic pigmentation. This method has become a favored treatment in the community, to support the appearance of teeth. However, the use of chemicals during the bleaching process can result in reductions in tooth enamel hardness due to demineralization. The aim of the present study to determine the effects of hydroxyapatite (HA) paste, synthesized from chicken eggshells, on the microhardness of tooth enamel after the application of external bleaching materials. This study was conducted using 24 permanent maxillary central incisors, which were divided into four groups. Group 1 received sequential at-home bleaching and HA paste; group 2 received sequential at-home bleaching and casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) paste; group 3 received sequential in-office bleaching and HA paste; and group 4 received sequential in-office bleaching and CPP-ACP paste. Enamel hardness tests were performed using a Universal Hardness Tester tool. Statistical analysis was performed using the Wilcoxon signed-rank test. The results show that the applications of HA paste, synthesized from eggshells, after the application of in-office bleaching, resulted in significant (p<0.05) increases in tooth enamel microhardness. In contrast, no significant effect was observed after the application of at-home bleaching. In conclusion, HA paste derived from eggshells can increase the microhardness of tooth enamel after the application of external bleaching materials.
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| Keyword:
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Bleaching, Eggshell, Enamel hardness, Hydroxyapatite
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| EOI:
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-
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| DOI:
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https://doi.org/10.31838/ijpr/2020.SP1.086
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| Download:
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