中国组织工程研究

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

生物活性玻璃对早期人工釉质龋的再矿化

王  尹1,王  瑀2,董  波1,张  婷3,陈思杰4,曲媛媛5   

  1. 1 佳木斯大学附属第二医院口腔医院牙体一科,黑龙江省佳木斯市  154000
    2 齐齐哈尔市第一医院口外二病房,黑龙江省齐齐哈尔市  161000
    3哈尔滨医科大学附属第一医院重症监护科(ICU),黑龙省江哈尔滨市  150001
    4 佳木斯大学附属第二医院口腔医院儿童牙病科,黑龙江省佳木斯市  154000
    5北京市昌平区圆宇医疗整形美容,北京市  102200
  • 收稿日期:2012-09-18 修回日期:2012-10-18 出版日期:2013-05-21 发布日期:2013-05-21
  • 通讯作者: 董波,主任医师,佳木斯大学附属第二医院口腔医院牙体一科,黑龙江省佳木斯市 154000
  • 作者简介:王尹★,女,1986年生,吉林省洮南县人,汉族,佳木斯大学在读硕士,主要从事牙体牙髓病学研究。 916789875@qq.com
  • 基金资助:

    佳木斯大学校管课题(L2012-037)

Bioactive glass effects on remineralization of early artificial enamel caries

Wang Yin1, Wang Yu2, Dong Bo1, Zhang Ting3, Chen Si-jie4, Qu Yuan-yuan5   

  1. 1 First Department of Tooth, Stomatological Hospital, Second Affiliated Hospital of Jiamusi University, Jiamusi  154000, Heilongjiang Province, China
    2 Second ward of Oral Surgery, First Hospital of Qiqihar City, Qiqihar  161000, Heilongjiang Province, China
    3 ICU Room, First Affiliated Hospital of Harbin Medical University, Harbin  150001, Heilongjiang Province, China
    4 Department of Children’s Dental Diseases, Stomatological Hospital of Jiamusi University, Jiamusi  154000, Heilongjiang Province, China
    5 Beijing Yuanyu Medical Cosmetic Surgery Clinic, Beijing  102200, China
  • Received:2012-09-18 Revised:2012-10-18 Online:2013-05-21 Published:2013-05-21
  • Contact: Dong Bo, Chief physician, First Department of Tooth, Stomatological Hospital, Second Affiliated Hospital of Jiamusi University, Jiamusi 154000, Heilongjiang Province, China
  • About author:Wang Yin★, Studying for master’s degree, First Department of Tooth, Stomatological Hospital, Second Affiliated Hospital of Jiamusi University, Jiamusi 154000, Heilongjiang Province, China 916789875@qq.com
  • Supported by:

    the grant from Jiamusi University, No. L2012-037

摘要:

背景:生物活性玻璃具有良好的生物相容性,且具有抑制口腔致龋细菌和牙周相关细菌及抗牙本质过敏的作用。
目的:评价生物活性玻璃促进早期人工釉质龋再矿化的作用。
方法:将新鲜拔除的30颗牛切牙制成人工龋模型,将标本在37 ℃人工脱矿液内脱矿72 h,用扫描电镜观察脱矿后釉质表面的平滑情况,用显微硬度仪测量脱矿后釉质的显微硬度。然后随机分为3组,每组10个。采用pH循环法模拟人口腔环境,将3组标本分别浸泡在生物活性玻璃溶液、氟化钠溶液及人工唾液内,3次/d,10 min/次,循环浸泡20 d,扫描电镜检测标本脱矿及再矿化情况,用显微硬度计检查牙釉质显微硬度。
结果与结论:浸泡在生物活性玻璃溶液中的牙釉质表面较浸泡在其他两溶液中的牙釉质表面光滑平整,无空隙存在;浸泡在生物活性玻璃溶液中的牙釉质表面显微硬度高于浸泡在其他两溶液中的牙釉质表面显微硬度(P < 0.05)。说明生物活性玻璃在体外实验中能促进早期釉质龋的再矿化。

关键词: 生物材料, 组织工程口腔材料, 生物活性玻璃, 牙釉质, 早期人工釉质龋, 再矿化, 人工脱矿, 显微硬度, pH循环实验, 口腔生物材料, 其他基金

Abstract:

BACKGROUND: Bioactive glass has good biocompatibility and could control oral bacteria and protect against dentin hypersensitivity.
OBJECTIVE: To evaluate remineralization effect of bioactive glass on early artificial enamel caries.
METHODS: Thirty bovine incisors fresh were made to artificial caries models, and were placed in a container with demineralization iquid at 37 ℃ for 72 hours. Micro hardness tester was used to detect hardness value after demineralization, and the enamel surfaces were observed by scanning electron microscope. Then, the samples were randomly divided into three groups, 10 in each group. Using pH cycle way method, the oral environment of human beings was copied. Samples were respectively soaked in bioactive glass solution, sodium fluoride solution and artificial saliva solution, three times a day and 10 minutes each. These three groups were dipped circularly into an artificial cariogenic solution and an artificial saliva solution for 20 days. The scanning electron microscope was used to observe demineralization and remineralization on the enamel surface. Micro hardness tester was employed to detect enamel hardness.
RESULTS AND CONCLUSION: The enamel surface in the experiment group was smoother than the other two control groups. The micro hardness of the experiment group was higher than that of the two control groups (P < 0.05). Therefore, bioactive glass can promote remineralization of early artificial enamel caries in vitro.

Key words: biomaterials, tissue-engineered oral materials, bioactive glass, enamel, early artificial enamel caries, remineralization, artificial demineralization, micro hardness, pH cycle experiment, oral biomaterials, other grants-supported paper

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