Berstein A, Stender E, Geurtsen W
Universitätsklinik und Poliklinik für Zähn-, Mund- und Kieferheilkunde, Köln.
ZWR. 1990 Jan;99(1):12-7.
The marginal adaptation of partial crowns with different types of finish line preparations was determined by means of dye penetration tests. The best marginal sealing was found for the featheredge-like preparation, followed by the shoulder preparation and the chamfer preparation with or without bevel. The scanning electron microscopic evaluation revealed that a finishing of the restoration margins during the setting of the luting material resulted in a better marginal sealing than a finishing after the cementation.
通过染料渗透试验测定不同类型边缘线预备的部分冠的边缘适合性。发现羽状边缘预备的边缘封闭性最佳，其次是肩台预备以及有或无斜面的倒凹预备。扫描电子显微镜评估显示，在粘结材料凝固过程中对修复体边缘进行修整，比粘结后修整能获得更好的边缘封闭性。
