Concentration-dependent effect of carboxymethyl chitosan amorphous calcium phosphate on the surface hardness of primary tooth enamel.

IF 1.9 4区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of oral science Pub Date : 2023-07-01 DOI:10.2334/josnusd.23-0084

Theodora Elien, Heriandi Sutadi, Margaretha Suharsini

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Abstract

Purpose: To compare the effects of gels containing 2.5% and 5% carboxymethyl chitosan amorphous calcium phosphate (CMC-ACP) on the microhardness of primary tooth enamel.

Methods: Twenty-four tooth specimens were demineralized with 37% phosphoric acid and divided into four groups: an untreated control group, a positive control group treated with casein phosphopeptide amorphous calcium phosphate, and two groups treated with 2.5% and 5% CMC-ACP gel, respectively. The enamel surface hardness was then measured with a Vickers hardness tester.

Results: In terms of Vickers Hardness Number (VHN), the degree of alteration in tooth surface microhardness was 77.83 ± 13.44 in the 5% CMC-ACP group and 52 ± 6.93 in the 2.5% CMC-ACP group (P = 0.002). The inter-group difference in the surface hardness change was significant (P < 0.05).

Conclusion: The 5% CMC-ACP gel increased the hardness of primary tooth enamel to a greater degree than the 2.5% CMC-ACP gel.

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羧甲基壳聚糖无定形磷酸钙对原牙釉质表面硬度的浓度依赖性研究。

目的:比较含2.5%和5%羧甲基壳聚糖无定形磷酸钙(CMC-ACP)凝胶对初级牙釉质显微硬度的影响。方法:用37%磷酸对24个牙标本进行脱矿处理，分为4组:未处理对照组，酪蛋白磷酸肽无定形磷酸钙处理阳性对照组，2.5%和5% CMC-ACP凝胶处理2组。用维氏硬度计测定牙釉质表面硬度。结果:5% CMC-ACP组牙面显微硬度改变程度为77.83±13.44,2.5% CMC-ACP组为52±6.93 (P = 0.002)。各组表面硬度变化差异有统计学意义(P < 0.05)。结论:5% CMC-ACP凝胶比2.5% CMC-ACP凝胶对原牙釉质硬度的提高程度更大。

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来源期刊

Journal of oral science DENTISTRY, ORAL SURGERY & MEDICINE-MATERIALS SCIENCE, BIOMATERIALS

CiteScore

3.80

自引率

0.00%

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