Study on a new light-activated fluoride releasing filling material

新型光激发释氟填充材料的研究

基本信息

  • 批准号:
    04454468
  • 负责人:
  • 金额:
    $ 4.35万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
  • 财政年份:
    1992
  • 资助国家:
    日本
  • 起止时间:
    1992 至 1994
  • 项目状态:
    已结题

项目摘要

In recent years, the root surface caries and cervical erosions are increasing with aging of population. Dentin adhesive systems now available to these defects do not exhibit an enough adhesion to dentin and secondary caries caused by the microleakage frequently occurs at the dentin margin. Therefore, filling material preventing the secondary caries needs to be developed. Fluoride has an property to reinforce enamel and to give it resistance to caries, while its effect to dentin has not been clarified. In this study, we investigated the effect of fluoride to dentin for developing a filling material preventing secondary caries. Although glass ionomer cements are well known to release fluoride, a new light-activated fluoride releasing material was developed for this study. In a microleakage test in the cervical class V cavities, this new material exhibited better results than conventional glass ionomers. The fluoride release from it was equal to that from the other glass ionomers and the fluoride uptake into dentin was confirmed with X-ray microanalyzer. Acid resistance of dentin was improved by the fluoride released from this new material. Dog's pulpal response was not inflammatory, then it could be regarded as a very biocompatible filling material. It was suggested, therefore, that this new light-activated fluoride releasing material prevents secondary caries and preserves teeth longer in oral environment.
近年来,随着人口老龄化的加剧,根面龋和宫颈糜烂的发病率呈上升趋势。现有的牙本质粘接系统对牙本质没有足够的粘接力,微渗漏引起的继发龋常发生在牙本质边缘。因此,需要开发预防继发龋的充填材料。氟化物具有增强牙釉质并使其抗龋的特性,而其对牙本质的影响尚未阐明。本研究旨在探讨氟化物对牙本质的影响,以开发一种预防继发龋的充填材料。虽然玻璃离子水门汀是众所周知的释放氟,一种新的光激活的氟释放材料的开发,这项研究。在颈椎V类腔的微渗漏测试中,这种新材料表现出比传统玻璃离聚物更好的结果。其氟释放量与其他玻璃离子聚合物相当,并经X射线微区分析仪证实了氟进入牙本质。这种新型材料释放的氟提高了牙本质的抗酸性。犬牙髓反应无炎症反应,是一种生物相容性好的充填材料。因此,这种新型的光活化氟释放材料可以防止继发龋,并在口腔环境中更长时间地保存牙齿。

项目成果

期刊论文数量(20)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
M.Tsunekawa: "A new light-activated adhesive cavity liner:an in vitro bond strength microleakage study." Dental Materials. 8. 296-298 (1992)
M.Tsunekawa:“一种新型光激活粘合腔衬:体外粘合强度微渗漏研究。”
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    0
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M.Tsunekawa,J.C.Setcos,Y.Usami,M.Iwaku,S.J.Marshall: "A new light-activated adhesive composite:shear bond strength and microleakage" Dental Materials. 8. 234-237 (1992)
M.Tsunekawa,J.C.Setcos,Y.Usami,M.Iwaku,S.J.Marshall:“一种新型光活化粘合复合材料:剪切粘合强度和微渗漏”牙科材料。
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    0
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M.Tsunekawa: "A new light-activated adhesive composite : shear bond strength and microleakage" Dental Materials. Vol.8. 234-237 (1992)
M.Tsunekawa:“一种新型光活化粘合剂复合材料:剪切粘合强度和微渗漏”牙科材料。
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    0
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Y.Usami: "Pulpal response to a new light-activated fluoride releasing liner." Dental Materials. 9. 344-349 (1993)
Y.Usami:“牙髓对新型光激活氟化物释放衬垫的反应。”
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    0
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Usami,Y: "Pulpal Response to A New Light-activated Fluoride Releasing Liner" Dental Materials. (発表予定). (1994)
Usami, Y:“牙髓对新型光激活氟化物释放衬垫的反应”牙科材料(即将发表)。
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