中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (34): 5490-5495.doi: 10.3969/j.issn.2095-4344.0685

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

酸蚀后不同时间应用两种牙膏对牙釉质再矿化和抗酸蚀的效果

赵玉龙1,杨德圣2,许 繁1,李岩峰3   

  1. 1南方医科大学口腔医院,广东省广州市 510000;2武警总医院,北京市 100000;3解放军总医院第一附属医院,北京市 100000
  • 收稿日期:2018-06-23 出版日期:2018-12-08 发布日期:2018-12-08
  • 作者简介:赵玉龙,男,1988年生,山东省日照市人,医师,医学硕士,主要从事口腔修复研究。

Effects of two toothpastes used at different time on enamel remineralization and acid resistance

Zhao Yulong1, Yang Desheng2, Xu Fan1, Li Yanfeng3   

  1. 1Stomatological Hospital of Southern Medical University, Guangzhou 510000, Guangdong Province, China; 2Armed Police Force General Hospital, Beijing 100000, China; 3 First Affiliated Hospital of the PLA General Hospital, Beijing 100000, China
  • Received:2018-06-23 Online:2018-12-08 Published:2018-12-08
  • About author:Zhao Yulong, Master, Physician, Stomatological Hospital of Southern Medical University, Guangzhou 510000, Guangdong Province, China

摘要:

文章快速阅读:

 

文题释义:
生物活性玻璃:是一种在高温高压下溶制的无色无味白色颗粒状粉末,由钙、磷、硅和钠(Ca、P、Si 和Na)组成,是一种以钙钠磷硅酸为活性成分的矿物质,其中SiO2占45%,Na2O和CaO各占24.5%,P2O5占6%,遇水反应释放钙磷离子并呈碱性,该材料具有良好的生物相容性。
牙齿酸蚀症:是指在无细菌参与的情况下, 由于接触牙面的酸或其螯合物化学侵蚀作用而引起的一种病理的、慢性的牙体硬组织表面浅层丧失。当酸性物质进入口腔,使口腔内pH值改变,出现了大量H+,使牙釉质中的磷酸钙发生溶解,牙釉质发生脱矿,产生硬组织丧失。
 
 
背景:多数学者建议食用酸性食物30 min以后刷牙,以减少牙齿磨损,但不同时间应用牙膏制剂再矿化的效果差异研究较少。
目的:比较在酸蚀后即刻和酸蚀后唾液浸泡30 min应用生物活性玻璃牙膏或含氟牙膏,对酸蚀牙釉质再矿化和再矿化后抗酸蚀的影响。
方法:取50个牛牙釉质样本,经碳酸饮料酸蚀后随机分为5组进行再矿化实验,空白对照组置于天然唾液中30 min;即刻含氟组和即刻生物活性玻璃组分别立即涂抹含氟牙膏浆和生物活性玻璃牙膏浆,然后置于天然唾液中30 min;30 min后含氟牙膏组和30 min后生物活性玻璃组置于天然唾液中30 min后,再分别涂抹含氟牙膏浆和生物活性玻璃牙膏浆;再矿化实验后,将各组样本再次经碳酸饮料酸蚀。再矿化实验与再酸蚀实验后,检测各组样本表面显微硬度,并进行扫描电镜观察。

结果与结论:①再矿化实验后,各组表面显微硬度值均高于空白对照组(P < 0.05),生物活性玻璃组表面显微硬度值高于含氟组(P < 0.05),30 min后含氟牙膏组表面显微硬度值高于即刻含氟组(P < 0.05);②再酸蚀实验后,各组表面显微硬度值降低幅度均低于空白对照组(P < 0.05),生物活性玻璃组表面显微硬度值降低幅度低于含氟组(P < 0.05);③再矿化及再酸蚀实验后,空白对照组釉柱间质破坏最严重,间质表面较釉柱明显降低;生物活性玻璃组表面最为平坦,釉柱与釉柱间质破坏最小,表面可见有大量球形颗粒附着;④结果表明,生物活性玻璃可有效增强酸蚀牙釉质再矿化及抗酸蚀效果,酸蚀后即刻应用含氟牙膏减少其再矿化;酸蚀后即刻和酸蚀后唾液浸泡30 min应用生物活性玻璃牙膏对釉质再矿化和抗酸蚀的效果无差异。

ORCID: 0000-0001-7390-6207(赵玉龙)

关键词: 生物活性玻璃牙膏, 含氟牙膏, 再矿化, 釉质, 酸蚀, 不同时间, 生物材料

Abstract:

BACKGROUND: Tooth brushing to reduce tooth wear is mostly recommended at 30 minutes after eating acidic food. However, little is reported on the effect of toothpastes used at different time on enamel remineralization.

OBJECTIVE: To evaluate the effect of bioactive glass toothpaste or fluoride toothpaste on enamel remineralization and acid resistance after remineralization when used instantly after being eroded or 30 minutes after being eroded.
METHODS: Fifty bovine enamel samples were randomly divided into five groups after the acid etching of carbonated beverage. The blank control group was placed in the natural saliva for 30 minutes. Instant fluoride group and instant bioactive glass group were immediately smeared with fluoride toothpaste and bioactive glass toothpaste, respectively, and then the samples in these two groups were placed in the natural saliva for 30 minutes. Groups of fluoride toothpaste or bioactive glass used at 30 minutes after acid etching were placed in the natural saliva for 30 minutes, and then the fluoride toothpaste or the bioactive glass toothpaste paste was applied respectively. After remineralization, all the samples were re-etched by carbonated beverages. After remineralization and re-etching, the surface microhardness of each sample was detected and observed by scanning electron microscope.

RESULTS AND CONCLUSION: (1) After remineralization, the surface microhardness of each group was higher than that in the blank control group (P < 0.05). The surface microhardness of the bioactive glass groups was higher than that in the fluoride groups (P < 0.05). The surface microhardness of the group with fluoride toothpaste used at 30 minutes after acid etching was higher than that in the instant fluorine group (P < 0.05). (2) After re-etching, the decrease in the surface microhardness was lower in the treatment groups than the blank control group (P < 0.05), and the decrease in the surface microhardness in the bioactive glass groups was lower than that in the fluoride groups (P < 0.05). (3) After remineralization and re-etching, most serious damage to the interprismatic substance was found in the blank control group, and the surface of the interprismatic substance was obviously lower than that of the enamel prisms. The flattest surface of the interprismatic substance in the bioactive glass groups was observed, and there was a minimal damage to the interprismatic substance and the enamel prisms. Moreover, a large number of spherical particles were attached to the surface of the interprismatic substance in the bioactive glass groups. To conclude, these results show that the bioactive glass can effectively enhance the remineralization and anti-corrosion ability of the etched enamel. The use of fluoride toothpaste instantly after acid etching can reduce the enamel remineralization. Moreover, there is no difference in enamel remineralization and acid resistance using bioactive glass instantly or 30 minutes after immersion in the natural saliva.

  中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

Key words: Toothpastes, Tooth Remineralization, Dental Enamel, Acid Etching, Dental, Tissue Engineering

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