The all-porcelain labial margin for ceramometal restorations: a new concept.
The all-porcelain labial margin for ceramometal restorations: a new concept.
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用于陶瓷金属修复体的全瓷唇缘：一个新概念。
DOI：
10.1016/0022-3913(83)90091-4
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
R. Presswood
中科院分区：
文献类型：
--
作者：
J. Prince;T. Donovan;R. Presswood
Jonathan Prince， DDS,* Terry E. Donovan， DDS，**和Ronald G. Presswood， DDS***南加州大学，牙科学院，洛杉矶，加利福尼亚州。传统的陶瓷修复体不能达到最佳的美学效果，特别是在牙周边缘区域。在前牙修复体上发现金属项圈暴露或金属边缘穿过薄而易碎的软组织是一种常见但令人失望的经历。虽然有触感，但'，*铝，3和铂结合。瓷贴面冠可用于克服一些美学问题，但由于其固有的物理弱点，尚未得到广泛接受。与全瓷冠的断裂相比，将瓷-金属冠的轻微美学缺陷合理化似乎更容易。另一种美观的方法是使用没有金属项圈的陶瓷冠。已经描述了几种制造这种修复体的技术。这些修复结合了陶瓷的强度和完整瓷唇缘的优异美学。然而，它们的使用受到限制，主要是因为在制造过程中存在技术上的困难。关于这个主题发表的技术文章的数量表明，人们仍在继续寻找更简单、更可预测的方法。
Jonathan Prince, DDS,* Terry E. Donovan, DDS,** and Ronald G. Presswood, DDS*** University of Southern California, School of Dentistry, Los Angeles, Calif.0 ptimum esthetics is not achieved consistently with conventional ceramometal restorations, particularly in the area of the lalbiogingival margin. It is a common but disappointing experience to find metal collars on anterior restorations exposed or metal margins showing through thin, friable soft tissue. Although feldlspathic,‘,* aluminous, 3 and platinumbonded4y5 compl. ete porcelain veneer crowns may be used to overcome some esthetic problems, they have not achieved wide acceptance because of their inherent physical weakness. It appears to be easier to rationalize the minor esthetic deficiencies of porcelain-to-metal crowns than to contend with fracture of all-porcelain crowns.An alternate esthetic approach is the use of ceramometal crowns without metal collars. Several techniques for fabrication of such restorations have been described. 6-” These restorations combine the strength of ceramometal with the excellent esthetics of the complete porcelain labial margin. However, their use is limited primarily because of technical difficulties involved in their fabrication. The number of technique articles published on this subject is an indication that the search continues for a simpler, more predictable method.