黄金烤瓷冠钛合金烤瓷冠普通烤瓷冠修复临床应用观察

目的:考察三种不同的烤瓷冠(PFM)对患牙牙周组织的影响.方法:选择双侧上颌第一磨牙均需修复的患者90例,分为为黄金PFM修复组,钛合金PFM修复组和普通PFM修复组.分别于修复前、后1周、1月和6月检测基牙龈沟液(GCF)的量以及GCF中天冬氨酸转氨酶(AST)和碱性磷酸酶(ALP)的活性水平,比较3种烤瓷冠对其影响...

Clinical Effect of Gold PFM Ti- alloy PFM and Common PFM on Restored teeth

Objective： To investigate the effect of three different PFM （ porcelain fused to metal ） on periodontal tissue. Method： 90 patients whose two maxillary first molars need to accept PFM prosthesis were selected. The 90 patients were divided into three groups as gold PFM group, Ti-alloy PFM group and common PFM group. GCF was obtained, and the levels of AST and ALP were tested before and 1 week, 1 month and 6 month after the prosthesis. Result： Before the prosthesis, the amount of GCF and the levels of AST and ALP of three groups were close （ P〉0.05 ）. The amount of GCF and the levels of AST and ALP of three groups were increased 1 week after the prosthesis （ P〈0. 05 ）. The levels of AST and ALP of Ti-alloy PFM group and common PFM group showed a tendency to increase from the first month to sixth month （ P〈0.05 ） , while those in the gold PFM group were of no difference to pre-prosthesis （ P〉0.05 ）. Conclusion： The effect of gold PFM on the periodontal tissue was the least.