White S N, Kipnis V
Department of Restorative Dentistry, School of Dentistry, University of Southern California, Los Angeles.
Int J Prosthodont. 1993 May-Jun;6(3):248-54.
This study investigated the three-dimensional nature of crown fit and the effects of adjustment and luting. Standardized preparations were made on extracted premolars and impressions and dies made. Complete-coverage castings were fabricated using base metal alloy. The castings were placed on their respective teeth and measurements made. The castings were then adjusted using a silicone disclosing medium and remeasured. They were then assigned to one of five luting agent groups and cemented. A relative term describing tilting was defined. Casting adjustment decreased tilting and cementation increased tilting. Resin cements tilted castings significantly more than did zinc phosphate, glass-ionomer, or polycarboxylate cements.
本研究调查了牙冠密合度的三维特性以及调改和粘固的效果。在拔除的前磨牙上制作标准化预备体，并制取印模和模型。使用贱金属合金制作全冠铸件。将铸件放置在各自的牙齿上并进行测量。然后使用硅酮显示介质对铸件进行调改并重新测量。接着将它们分配到五个粘固剂组之一并进行粘固。定义了一个描述倾斜的相关术语。铸件调改减少了倾斜，而粘固增加了倾斜。树脂粘固剂使铸件倾斜的程度明显大于磷酸锌、玻璃离子或聚羧酸锌粘固剂。
