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

改性牙本质粘接剂对抗变形链球菌的性能

刘梅天,聂红兵,张金婷,周海静   

  1. 西北民族大学口腔医学院,甘肃省兰州市  730030
  • 收稿日期:2012-09-04 修回日期:2012-10-24 出版日期:2013-05-21 发布日期:2013-05-21
  • 通讯作者: 聂红兵,教授,西北民族大学口腔医学院,甘肃省兰州市 730030
  • 作者简介:刘梅天★,女,1974年生,甘肃省白银市人,汉族, 2008年兰州大学口腔医学院毕业,硕士,副教授,主要从事口腔修复与材料学研究。 liumt2009@163.com
  • 基金资助:

    甘肃省自然科学基金资助项目(096RJ ZA108)

Antibacterial activities of modified dentin adhesive agent against Streptococcus mutans

Liu Mei-tian, Nie Hong-bing, Zhang Jin-ting, Zhou Hai-jing   

  1. Stomatological School of Northwest University for Nationality, Lanzhou  730000, Gansu Province, China
  • Received:2012-09-04 Revised:2012-10-24 Online:2013-05-21 Published:2013-05-21
  • Contact: Nie Hong-bing, Professor, Stomatological School of Northwest University for Nationality, Lanzhou 730000, Gansu Province, China
  • About author:Liu Mei-tian★, Master, Associate professor, Stomatological School of Northwest University for Nationality, Lanzhou 730000, Gansu Province, China liumt2009@163.com
  • Supported by:

    the Natural Science Foundation of Gansu Province, No. 096RJ ZA108

摘要:

背景:研究证实粘接修复技术治疗龋病过程中,龋洞预备后残留的细菌可在牙体组织与修复体之间继续生存较长时间,诱发继发龋或牙髓的慢性炎症。
目的:评价经甲基丙烯酰氧十二烷基溴吡单体改性树脂基粘接剂对变形链球菌的抗菌性能。
方法:制备含质量分数0(阴性对照),1%,2%,3%,4%甲基丙烯酰氧十二烷基溴吡抗菌单体的实验性GLUMA Comfort Bond粘接剂样本,以Clearfil Protect bond粘接剂为阳性对照;分别涂布在复合树脂试件表面并固化,在变形链球菌液体培养基中进行培养,培养18 h后检测菌液的A值、pH值。
结果与结论:GLUMA Comfort Bond粘接剂对变形链球菌生长及产酸能力无明显抑制作用,Clearfil Protect bond粘接剂对变形链球菌生长及产酸能力有明显抑制作用。含1%,2%甲基丙烯酰氧十二烷基溴吡抗菌单体的GLUMA Comfort Bond粘接剂对变形链球菌生长及产酸能力的抑制作用与阴性对照组相当(P > 0.05),含3%,4%甲基丙烯酰氧十二烷基溴吡抗菌单体的GLUMA Comfort Bond粘接剂固化后对变形链球菌生长及产酸能力的抑制作用与阳性对照组相当(P > 0.05)。表明添加了3%,4%甲基丙烯酰氧十二烷基溴吡抗菌单体的实验性抗菌粘接试件具有良好的抗菌性能。

关键词: 生物材料, 组织工程口腔材料, 抗菌活性, 甲基丙烯酰氧十二烷基溴吡, 复合树脂, 变形链球菌, 单体, 粘接剂, 省级基金

Abstract:

BACKGROUND: During the treatment of dental caries with bonding repair technique, residual bacteria following the preparation of cavities can survive a long time between the tooth structure and dental prosthesis, which can cause secondary caries or chronic inflammation of the pulp.
OBJECTIVE: To evaluate the antibacterial effects of resin-based adhesive modified with the antibacterial monomer 12-methacryloyloxydodecylpyridinium bromide against Streptococcus mutans.
METHODS: Experimental antibacterial adhesive specimens (GLUMA Comfort Bond) covered with different concentrations of antibacterial monomers (0 as negative control, 1%, 2%, 3%, 4% 12-methacryloyloxydodecylpyridinium bromide) were prepared, and their antibacterial effects were investigated by the measurement of bacteria liquid absorbance, pH value which contained experimental antibacterial adhesive specimens after 18-hour culture. Clearfil Protect Bond was used as positive control.
RESULTS AND CONCLUSION: There was statistical difference in antibacterial effects between the negative control and positive control. The experimental adhesive specimens incorporated with 1% and 2% monomers showed antibacterial activities against Streptococcus mutans similar as the negative control (P > 0.05). There was no statistical difference in antibacterial effects between the positive control and experimental adhesive specimens incorporated with 3% and 4% monomers (P > 0.05). These findings indicate that experimental adhesive specimens containing 3% and 4% 12-methacryloyloxydodecylpyridinium bromide monomers showed better antibacterial activities.

Key words:  biomaterials, tissue-engineered oral materials, antibacterial activity, 12-methacryloyloxydodecylpyridinium bromide, composite resin, Streptococcus mutans, monomer, adhesive, provincial grants-supported paper

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