Adhesive interface between resin and etched dentin of cervical erosion/abrasion lesions.
Adhesive interface between resin and etched dentin of cervical erosion/abrasion lesions.
复制标题
宫颈糜烂/磨损损伤的树脂和蚀刻牙本质之间的粘合界面。
作者：
C. Harnirattisai;S. Inokoshi;Y. Shimada;H. Hosoda
本文研究了37%磷酸凝胶60秒酸蚀宫颈糜烂/磨损病变的牙本质壁与粘接性复合树脂之间的界面结构。几乎所有的牙本质小管都被棒状结构沉积物堵塞，即使在酸处理后仍不溶解。发现粘合树脂和表面脱矿牙本质之间的混合层为0.3至3微米，比正常牙本质或龋蚀牙本质中常规发现的混合层薄得多。混合层在牙本质小管平行于牙本质洞表面的牙本质洞的咬合壁上最薄。粘结树脂对这些区域的粘结强度可能不同于对完整正常牙本质的粘结强度。
The interfacial structure between an adhesive composite resin and the dentinal walls of cervical erosion/abrasion lesions etched with 37% phosphoric acid gel for 60 seconds was investigated. Almost all dentinal tubules were occluded with rod-like structural depositions that remained undissolved even after acid conditioning. The hybrid layer between the adhesive resin and surface-demineralized dentin was found to be 0.3 to 3 microns, much thinner than that routinely found in either normal dentin or cariously affected dentin. The hybrid layer was thinnest at the occlusal walls of the cavity where the dentinal tubules run parallel to the cavity surface. The bond strength of adhesive resin to these areas may differ from that to intact normal dentin.