２乌鲁木齐口腔医院）烤瓷冠颈缘与龈缘的接触关系在临床上往往处理不够理想，例如出现一些颈缘黑线、龈缘炎症等问题，它们不仅有碍外观而且大大缩短了烤瓷冠的使用时间。近年来我们在临床上对处理此类问题有了一些体会，报告如下。１病例与方法我们在临床上对５７例患者... 2 Urumqi Stomatological Hospital) Porcelain crown and gingival margin of the contact relationship is often not enough treatment in clinical ideal, for example, there are some problems such as the black margin of the cervical margin, gingival inflammation, they not only hinder the appearance and greatly shorten the porcelain crown The use of time. In recent years, we have some experience in dealing with such problems clinically, the report is as follows. 1 cases and methods We are clinically 57 patients ...