The study of re-carcification of infected dentine

感染牙本质再硬化的研究

• 批准号: 11671893
• 负责人: OKAMOTO Akira
• 金额: $ 2.24万
• 依托单位: Niigata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11671893/
• 关键词: Infected dentin; Re-carcification; Fluoride releasing restorative materials; Anti-bacterial restorative material; コンポマー

In conventional procedure of caries treatment, it is demanded that the infected dentin is completely removed. In some case, the pulp was removed, as a result, the life of teeth was became shorter. Recently, minimal intervention dentistry is recommended. In this study, re-carcification of infected dentine was studied. The properties of glass-ionomer restorative cements containing mixed antibacterial drugs were studied. The more amount of mixed drugs contained in cements, the greater inhibition zone on BHI blood agar was observed. However, this also resulted in decreased mechanical and physical propertied of cements. The fluoride release from fluoridated adhesive restorative resin materials and new developed Compomer, fluoride uptake into surrounding tooth structures and the effect of their acid resistance were investigated. Glass-ionoomer cements showed higher fluoride release than those of resin and Compomer. WDX analysis showed the fluoride concentration on dentin and enamel contact area, after 60 days of immersion in deionized water. The acid resistance of enamel and dentin plates which contact with fluoride releasing restorative materials was increased. There is a higher possibility for the presence of caries around margins of restorations, application of fluoridated adhesive materials will lower this possibility and prevent secondary or initial caries around the margins of the restorations in both enamel and dentin. Also, this study showed the infected dentin is re-mineralized using the fluoride releasing materials. It was suggested that a new detection system for caries using the laser apparatus is useful to evaluate the re-mineralization of tooth.

在传统的龋病治疗过程中，要求完全去除受感染的牙本质。在某些情况下，牙髓被去除，结果，牙齿的寿命变得更短。最近，最小干预牙科被推荐。在这项研究中，再钙化感染牙本质进行了研究。研究了含混合抗菌药物的玻璃离子修复粘固剂的性能。骨水泥中混合药物含量越高，在BHI血琼脂上的抑菌圈越大。然而，这也导致水泥的机械和物理性能下降。研究了含氟粘接修复树脂材料和新研制的复合体材料的氟释放、氟向牙体周围组织的吸收以及对材料抗酸性的影响。玻璃离子水门汀的氟释放量高于树脂和复合水门汀。WDX分析显示，在去离子水中浸泡60天后，牙本质和牙釉质接触区域上的氟浓度。与释氟材料接触的牙釉质和牙本质板的抗酸能力增强。在牙釉质和牙本质中，牙釉质边缘周围存在龋齿的可能性较高，应用氟化粘合剂材料将降低这种可能性，并防止牙釉质和牙本质中牙釉质边缘周围的继发性或初始龋齿。此外，这项研究表明，受感染的牙本质是重新矿化使用氟释放材料。结果表明，激光龋病检测系统可用于牙齿再矿化的评价。

项目成果

N.Abu-bakr: "Color stability of compomer after Immersion in various media"Journal of Esthetic Dentistry. 12 (5). 258-263 (2000)

N.Abu-bakr：“复合体在各种介质中浸泡后的颜色稳定性”美容牙科杂志。

Linlin Han: "A WDX study of resin-dent in Interface on wet vs. dry dentin"DENTAL MATERIALS JOURNAL. 19. 317-325 (2000)

Linlin Han：“湿牙本质与干牙本质界面树脂凹痕的 WDX 研究”牙科材料杂志。

N.Abu-bakr: "Changes in the mechanical properties and surface texture of compomer immersed in various media"Journal of Prosthetic Dentistry. 84. 444-452 (2000)

N.Abu-bakr：“浸泡在各种介质中的复合体的机械性能和表面纹理的变化”修复牙科杂志。

Neamat,Abu-Baker: "Effect of Alcoholic & low pH soft drinks on the fluoride release from compomer"J.Esthetic Dent. 12・2. 97-104 (2000)

Neamat，Abu-Baker：“酒精和低 pH 软饮料对复合体释放氟化物的影响”J.Esthetic Dent 12・2 (2000)。

Neamat,Abu-Baker: "Changes in the mechanical properties and surface texture of compomer immersed in various media"J.of Prosthetic Dent. 84・4. 444-452 (2000)

Neamat，Abu-Baker：“复合体浸入各种介质中的机械性能和表面纹理的变化”J.of Prosthetic Dent 84・4（2000）。