Aboush Y E
Department of Conservative Dentistry, Bristol Dental Hospital and School, United Kingdom.
J Ir Dent Assoc. 1994;40(3):63-5.
This in vitro study comparatively assessed the magnitude and durability of the bonds to dentine of three glass-ionomer liner/bases, BaseLine VLC, Vitrebond and XR Ionomer. Shear bond strengths to human dentine were measured after 24 h. storage in water at 37 degrees C and after 5,000 continuous thermocycles between 5 degrees C and 55 degrees C. The BaseLine VLC material failed to achieve any measurable bond. The mean bond strength values of Vitrebond after 24 h. storage in water at 37 degrees C and after thermocycling were significantly higher (p < 0.05) than those of XR Ionomer. Both Vitrebond and XR Ionomer exhibited a drop in their bond strengths after thermocycling but this was statistically significant only in the case of XR Ionomer. These findings indicate that Vitrebond exhibits a more reliable bond to dentine compared to those of BaseLine VLC and XR Ionomer.
这项体外研究比较评估了三种玻璃离子衬层/基底材料（BaseLine VLC、Vitrebond和XR Ionomer）与牙本质结合的强度和持久性。在37摄氏度水中储存24小时后以及在5摄氏度至55摄氏度之间进行5000次连续热循环后，测量了它们与人类牙本质的剪切粘结强度。BaseLine VLC材料未能实现任何可测量的粘结。在37摄氏度水中储存24小时后以及热循环后，Vitrebond的平均粘结强度值显著高于XR Ionomer（p < 0.05）。热循环后，Vitrebond和XR Ionomer的粘结强度均有所下降，但仅在XR Ionomer的情况下具有统计学意义。这些发现表明，与BaseLine VLC和XR Ionomer相比，Vitrebond与牙本质的粘结更为可靠。
