山西医科大学学报2016，Vol.47Issue(8)：732-736,5.DOI:10.13753/j.issn.1007-6611.2016.08.013
马尾松树皮提取物预处理对根面牙本质耐酸蚀和脱矿能力的影响
The anti-demineralization effect of pinus massoniana bark extract on human root dentin
摘要
Abstract
Objective To explore the effect of pretreatment with pinus massoniana bark extract( PMBE) on the acid resistance and an-ti-demineralization ability of root dentin. Methods Forty root dentin blocks were randomly divided into distilled deionized water ( DDW) group, NaF group, 4% PMBE group and 8% PMBE group according to the different treatment solution in pH cycling. Speci-mens experienced pH cycling for 8 d. The surface micro-hardness of dentin before and after pH cycling was determined and the differ-ence of surface micro-hardness before and after pH cycling (ΔSMH) was calculated. The morphology of dentin surface after pH cycling was observed, and the calcium depletion rate ( CDR) in acid buffer also was measured after pH cycling. Results The surface micro-hardness had no significant difference before the pH cycle among four groups(P>0. 05). The ΔSMH in 4% and 8% PMBE groups were significantly lower than that in DDW group(P<0. 05), but there was no significant difference between 8% PMBE group and NaF group(P>0. 05). The CDR in both PMBE groups were significantly lower than in DDW group(P<0. 05). The CDR in 8% PMBE group was significantly higher than that in NaF group(P<0. 05), but significantly lower than 4% PMBE group(P<0. 05). The den-tin tubules were completely opened in DDW group, but they were basically closed in NaF group. The dentin tubules were partially opened with a shuttle shaped or narrow slit in PMBE groups. Conclusion PMBE could improve the acid resistance and anti-deminer-alization ability of root dentin, and the effect of 8% PMBE solution is better. PMBE has a certain role in the prevention of dentin hy-persensitivity.关键词
马尾松树皮提取物/牙本质过敏/抗脱矿/牙本质/钙离子释出率Key words
pinus massoniana bark extract/dentin hypersensitivity/anti-demineralization/dentin/calcium depletion rate分类
医药卫生引用本文复制引用
唐成芳,朱勇,阮建平,李子夏,王峰,徐红艳..马尾松树皮提取物预处理对根面牙本质耐酸蚀和脱矿能力的影响[J].山西医科大学学报,2016,47(8):732-736,5.基金项目
陕西省科技厅社会发展基金资助项目(2015SF242) （2015SF242）
陕西省卫生厅科研基金资助项目(2014D19) （2014D19）
西安医学院博士启动基金资助项目(2015DOC20) （2015DOC20）
西安医学院重点学科资助项目 （）
