Effect of Galla сhinensis on the Wear Resistance of Dentine

Abstract:

The aim of this study was to investigate the effect of natural herb material Galla Chinensis extraction (GCE) on the wear resistance of dentine in vitro. Forty sound bovine dentine blocks were prepared and randomly divided into two groups. The samples were first treated with 4000 ppm aqueous solution of Galla chinensis and distilled deionized water (DDW) was used as a control. Then the samples were subjected to 5,000 cycles of attrition bathed under artificial saliva with 150 N loads. Wear measurement, scanning electron microscopy (SEM) examination and energy-dispersive X-ray spectrometry (EDX) analysis were utilized to evaluate the effects of GCE on the wear resistance. The depth of the wear scar of DDW-treated surface (mean = 32.5 μm, SD = 11.8 μm) was significantly greater than that of GCE-treated surface (mean = 26.4 μm, SD = 13.9 μm) (p < 0.05). Furthermore, the SEM images showed severe wear on the DDW specimens and less wear on the GCE-treated samples. Finally, from EDX data, GEC group had higher percentage of Ca and P than the control. In conclusion, our study suggested that Galla chinensis could enhance wear resistance of dentine.

• Periodical: Advanced Materials Research (Volume 705)
• Pages: 187-190
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.705.187
• Online since: June 2013
• Authors: Hong Li, Meng Deng, Sheng Cheng Peng, Ju Hong Shi
• Keywords: Dynamic Attrition, Galla сhinensis, Microhardness, Surface Strengthening, Wear Rate, Wear Resistance

References

[1] Li H, Watson TF, Sherriff M, Curtis R, Bartlett DW. The influence of fluoride varnish on the attrition of dentine. Caries Res 2007;41:219-22.

DOI: 10.1159/000099322

[2] Li H, Liu MC, Deng M, Moazzez R, Bartlett DW. An experiment on the attrition of acid demineralized dentine in vitro. Aust Dent J 2011;56:63-7.

DOI: 10.1111/j.1834-7819.2010.01303.x

[3] Yanagisawa T, Miake Y. High-resolution electron microscopy of enamel-crystal demineralization and remineralization in carious lesions. J Electron Microsc 2003;52:605-13.

DOI: 10.1093/jmicro/52.6.605

[4] Ten Cate JM, Exterkate RAM, Rempt HE. Intra-oral retention of fluoride by bovine enamel from amine fluoride toothpaste and 0.4% amine fluoride liquid application. J Dent Res 1988 1988-02-01;67:491-5.

DOI: 10.1177/00220345880670021201

[5] Chu JP, Li JY, Hao YQ, Zhou XD. Effect of compounds of Galla chinensis on remineralisation of initial enamel carious lesions in vitro. J Dent 2007;35:383-7.

DOI: 10.1016/j.jdent.2006.11.007

[6] Zou L, Zhang LL, Li JY, Hao YQ, Cheng L, Li W, et al. Effect of Galla chinensis extract and chemical fractions on demineralization of bovine enamel in vitro. J Dent 2008;36:999-1004.

DOI: 10.1016/j.jdent.2008.08.008

[7] Zhang LL, Xue J, Li JY, Zou L, Hao YQ, Zhou XD, et al. Effects of Galla chinensis on inhibition of demineralization of regular bovine enamel or enamel disposed of organic matrix. Arch Oral Biol 2009;54:817-22.

DOI: 10.1016/j.archoralbio.2009.06.007

[8] Zhang LL, Zou L, Li JY, Hao YI, Xiao LY, Zhou XD, et al. Effect of enamel organic matrix on the potential of Galla chinensis to promote the remineralization of initial enamel carious lesions in vitro. Biomed Mater 2009;4:34102.

DOI: 10.1088/1748-6041/4/3/034102

[9] Qian X, Ana KB, Christine DW. In vitro remineralization effects of grape seed extract on artificial root caries. J Dent 2008;36:900-6.

[10] Walter R, Miguez PA, Arnold RR, Pereira PNR, Duarte WR, Yamauchi M. Effects of natural cross-linkers on the stability of dentin collagen and the inhibition of root caries in vitro. Caries Research 2008;42:263-8

DOI: 10.1159/000135671