Evaluation of resin-dentin interface on caries treatment

树脂-牙本质界面对龋齿治疗的评价

• 批准号: 12671848
• 负责人: NAKAJIMA Masatoshi
• 金额: $ 1.86万
• 依托单位: Tokyo Medical & Dental University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12671848/
• 关键词: Dentinal Caries; Bond Strength; Hardness; Composite Resin; EPMA; Remineralization; Glass Ionomer Cement; 脱灰象牙質; セルフエッチングプライマー; フッ素徐放性材料; pH分布; 光走査型化学顕微鏡; う蝕; 象牙質; コンポジットレジン; エッチング

Resin bond strengths to caries-affected dentin are of more clinical relevance than those made to normal dentin. The microtensile bond testing technique permits measurement of bond strength to both normal and caries affected dentin. Moreover, using this technique, it is possible to evaluate bonding durability to dentin floor of in vivo cavities. The bond strengths of resin composites to caries-affected dentin were lower than those of normal dentin, and the in vivo and in vitro resin-dentin interfaces gradually degraded over time.In order to evaluate the physiological remineralization of dentin, nanohardness and elemental distributions of artificial demineralized dentin beneath glass ionomer cements were measured after 3 or 360 days in vivo using nanoindentation tester and EPMA. The nanohardness of 3 days sample were lower than that of 360 days sample. Although Ca density was sparse within demineralized dentin, a high Mg density within this lesion was detested at 360 days.

树脂粘结强度对龋坏牙本质的临床意义大于对正常牙本质的临床意义。微拉伸粘结测试技术允许测量正常和龋齿影响的牙本质的粘结强度。此外，使用这种技术，它是可能的，以评价粘接耐久性的牙本质底的体内腔。实验结果表明，树脂复合材料与龋坏牙本质的结合强度低于正常牙本质，且随着时间的推移，树脂-牙本质界面逐渐退化，为了评价牙本质的生理性矿化，采用纳米压痕仪和电子探针对玻璃离子水门汀在牙本质中放置3天和360天后的纳米硬度和元素分布进行了测量。3天试样的纳米硬度低于360天试样。虽然钙密度稀疏的脱矿牙本质中，高镁密度在这个病变是厌恶在360天。

项目成果

Nakajima M, Sano H, Urabe I, Tagami J, Pashley DH: "Bond strengths of single-bottle dentin adhesives to caries-affected dentin"Operative Dentistry. 25. 2-10 (2000)

Nakajima M、Sano H、Urabe I、Tagami J、Pashley DH：“单瓶牙本质粘合剂与受龋齿影响的牙本质的粘合强度”牙科手术。

北迫勇一,平石典子,中島正俊,二階堂徹,田上順次,野村聡: "半導体シリコンセンサーを用いたpHイメージング顕微鏡によるヒト抜去う蝕象牙質の表面観察"日本歯科保存学会雑誌. 44(1). 56-63 (2001)

Yuichi Kitasako、Noriko Hiraishi、Masatoshi Nakajima、Toru Nikaido、Junji Tagami、Satoshi Nomura：“使用半导体硅传感器的 pH 成像显微镜对人体切除的龋齿牙本质进行表面观察”日本保守牙科学会杂志 44(1)。 56-63（2001）

Okuda M, Pereira PNR, Nakajima M, Tagami J, Pashley DH: "Long-term durability of resin-dentin interface : nanoleakage vs. microtensile bond strength"Operative Dentistry. 27. 289-296 (2002)

Okuda M、Pereira PNR、Nakajima M、Tagami J、Pashley DH：“树脂-牙本质界面的长期耐久性：纳米渗漏与微拉伸粘合强度”牙科手术。

Kitasako Y, Nakajima M, Pereira PNR, Okuda M, Sonoda H, Otsuki M, Tagami J: "Monkey pulpal response and microtensile bond strength beneath a one-application resin bonding system in vivo"Journal of Denristry. 28. 193-198 (2000)

Kitasako Y、Nakajima M、Pereira PNR、Okuda M、Sonoda H、Otsuki M、Tagami J：“体内一次性树脂粘合系统下的猴牙髓反应和微拉伸粘合强度”Journal of Denristry。

Nikaido T, Kunzelmann K-H, Chen H, Ogata M, Harada N, Yamaguchi S, Cox CF, Hickel R, Tagami J: "Evaluation of thermal cycling and mechanical loading on bond strength of a self-etching primer system to dentin"Dental Materials. 18(3). 269-275 (2002)

Nikaido T、Kunzelmann K-H、Chen H、Ogata M、Harada N、Yamaguchi S、Cox CF、Hickel R、Tagami J：“热循环和机械载荷对自酸蚀底漆系统与牙本质粘合强度的评估”牙科材料