A study on the microstructure of resin-dentin interface

树脂-牙本质界面微观结构的研究

• 批准号: 02404074
• 负责人: TAGAMI Junji
• 金额: $ 8.7万
• 依托单位: Tokyo Medical and Dental University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (A)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02404074/
• 关键词: ADHESIVE RESIN; RESIN-DENTIN INTERFACE; ARGON ION ETCHING; AGING; CARIES; RESIN IMPREGNATED LAYER; COLLAGEN; in vivo; 象牙質; プライマ-

Micro structure at the interface between adhesive resin materials and dentin was studied using the argon ion etching technique, which enabled the clear observation of resin impregnated layer under SEM, relating with TEM study and the bond strength.Resin impregnated layer at resin-dentin interface was confirmed to vary when the dentin bonding system, dentin(i.e. aging, caries, abrasion, and type of tooth) were different. The resin impregnated layer was also different between in vivo and in vitro study.Type of pretreatment solution for dentin, time of application and primer application were the significant factors which affected the depth of decalcification and the property of the collagen fibers exposed on dentinal surface. Penetration of the bonding resin into dentin may be controlled by these factors. The property of dentin to be bonded was also very important factor in creating resin impregnated layer. That is, type of tooth, site of dentin, distance from the pulp, phisiological or pathological changes in dentin caused by aging,caries and abrasion, and direction of the dentinal tubules at the surface were the factors affecting dentin bonding. Also, the dentinal fluid coming up from the tubules was considered to induce the decrease in the mechanical strength of a layer of bonding resin, resin impregnated layer and resin tags.The existence of a layer in which bonding resin did not penetrated, was observed, and the layer may act as a micro channel for microleakage.It was clarified that the width of the resin impregnated layer is not important for creating good bonding, but the bonding resin should be reached to dentin which is not affected with the acidic pretreatment solution, through the decalcified layer.

采用氩离子刻蚀技术研究了黏附树脂材料与牙本质界面处的微观结构，在扫描电镜下可以清晰地观察到树脂浸渍层，并与TEM研究和黏附强度有关。树脂-牙本质界面上的树脂浸渍层在牙本质结合体系、牙本质（即牙本质）和牙本质（即牙本质）之间发生变化。年龄、龋齿、磨损和牙齿类型)是不同的。在体内和体外实验中，树脂浸渍层也有所不同。牙本质预处理液的种类、使用时间和底漆的使用是影响牙本质表面胶原纤维脱钙深度和性能的重要因素。这些因素可以控制粘接树脂对牙本质的渗透。被粘接的牙本质的性质也是树脂浸渍层形成的重要因素。即牙齿的类型、牙本质的位置、与牙髓的距离、老化、龋齿、磨蚀等引起的牙本质的生理或病理变化、牙本质表面小管的方向等都是影响牙本质结合的因素。此外，从小管上来的牙本质液体被认为是导致粘接树脂层、树脂浸渍层和树脂标签层机械强度下降的原因。观察到粘接树脂未渗透的层的存在，该层可能作为微泄漏的微通道。结果表明，树脂浸渍层的宽度对形成良好的粘接并不重要，而粘接树脂应通过脱钙层到达不受酸性预处理溶液影响的牙本质。

项目成果

田上 順次: "レジンの接着性に及ぼす象牙質の加齢の影響について" 接着歯学. 11. (1993)

田上淳二：“牙本质老化对树脂粘合性能的影响”粘合牙科 11。（1993）

Junji Tagami: "Effect of aging on dentin bonding" American Journal of Dentistry. (1993)

Junji Tagami：“衰老对牙本质粘合的影响”美国牙科杂志。

猪越 重久: "齲蝕象牙質並びに歯頸部摩耗症硬化象牙質のレジンー象牙質接合界面について" 接着歯学. 11. (1993)

Shigehisa Inokoshi：“关于龋齿牙本质和宫颈磨损硬化牙本质的树脂-牙本质粘合界面”粘合牙科11。（1993）

Choltacha Harnirattisai: "Adhesive interface vesin and etched dentin of cervical erosion/abrasion lesions" Operative Dentistry. (1993)

Choltacha Harnirattisai：“宫颈糜烂/磨损损伤的粘合界面静脉和蚀刻牙本质”手术牙科。

Choltacha Harnirttsai, Shigehisa Inokoshi, Yasushi Shimada and Hiroyasu Hosoda: "Adhesive interface between resin and etched dentin of cervical erosion/abrasion lesions." Operative Dentistry. 18. (1993)

Choltacha Harnirttsai、Shigehisa Inokoshi、Yasushi Shimada 和 Hiroyasu Hosoda：“宫颈糜烂/磨损病变的树脂和蚀刻牙本质之间的粘合界面。”