Bieniek K W, Küpper H, Richter E J
Dtsch Zahnarztl Z. 1989 Oct;44(10):783-4.
Dicor crowns may present marginal defects, among other reasons because they require preparation of a circular ledge with rounded internal line angles. In studying this problem, 21 teeth that could no longer be saved were prepared in vivo and provided with Dicor crowns in our hospital. After remaining in place for 3 months these teeth were extracted. Subsequently their marginal areas were studied by SEM and histological preparations were made and measured. The marginal defects of Dicor crowns revealed slightly less favorable values than the Hi-Ceram crowns investigated one year ago, but these values are still within the range of clinical acceptability.
迪科尔全瓷冠可能会出现边缘缺陷，其中一个原因是它们需要制备一个带有圆形内线角的环形边缘。在研究这个问题时，我们在医院对21颗无法保留的牙齿进行了体内预备并安装了迪科尔全瓷冠。这些牙齿在就位3个月后被拔除。随后，通过扫描电子显微镜（SEM）对其边缘区域进行了研究，并制作了组织学标本并进行了测量。迪科尔全瓷冠的边缘缺陷显示出的数值略逊于一年前研究的高瓷全瓷冠，但这些数值仍在临床可接受范围内。
