Awliya W, Odén A, Yaman P, Dennison J B, Razzoog M E
Department of Cariology, Restorative Sciences, and Endodontics, University of Michigan, School of Dentistry, Ann Arbor, USA.
Acta Odontol Scand. 1998 Feb;56(1):9-13. doi: 10.1080/000163598422992.
Procera Sandvik AB is now manufacturing a densely sintered high-purity alumina core for an all-ceramic crown designed for anterior and posterior restorations. Whereas the material holds promise on the basis of in vitro strength tests, the ability to alter the surface and use conventional bonded resin cements has not been reported previously in the literature. Samples of the core were treated by means of one of four methods routinely used for all ceramic restorations, and then a commercially available resin cement was bonded to the surface. A shear bond test of the adhesion showed that the highest shear bond strengths of 11.99 +/- 3.12 MPa were obtained with air abrasion at 80 psi and 50-microm alumina particles.
普瑞赛拉山特维克公司现正在为一款用于前后牙修复的全瓷冠制造一种高密度烧结的高纯度氧化铝内核。尽管该材料基于体外强度测试展现出了前景，但此前文献中尚未报道过改变其表面并使用传统粘结树脂水门汀的能力。对该内核样本采用了常用于所有全瓷修复体的四种方法之一进行处理，然后将一种市售树脂水门汀粘结到其表面。粘结力的剪切粘结测试表明，使用80磅力/平方英寸的气压和50微米的氧化铝颗粒进行空气研磨时，可获得最高剪切粘结强度，为11.99±3.12兆帕。
