两种非贵金属烤瓷冠对基牙龈沟液量及其成分的影响研究

目的：探讨钛合金和钴铬合金烤瓷冠对基牙牙周组织的影响。方法：选择需要制作钛合金和钴铬合金烤瓷冠的临床病例各50例,于修复前,戴临时冠1周,戴牙1个月、3个月、6个月提取龈沟液,检测其质量、内毒素、碱性磷酸酶（ALP）及天门冬氨酸基转移酶（AST）活性含量。结果：钛合金和钴铬合金烤瓷组戴临时冠1周时龈沟液量、内毒素、ALP及AST量均有所增高（P〈0.05）;之后4项指标均下降并维持稳定,与牙体预备前无显著性差异（P〉0.05）。结论：两种非贵金属烤瓷冠对基牙牙周组织无不良影响。

The effects of two kinds of non-precious porcelain fused metal crown to gingival crevicular fluid volume and its components

Objective：To investigate the influences of two kinds of crown materials on patients＇ periodontal tissue.Method：60 patients who had treatments in repairing titanium alloy and cobALP chromium alloy PFM crown（50 patients in each group） were divided into 2 groups.Collect the gingival crevicular fluids respectively in 5 periods：before the treatment;wearing the temporary crown for 1 week;1,3 and 6 months after cementation.The levels of endotoxin,AST,and ALP were detected by automated chemical analyzer,and analyzed the variation between pre-restoration and post-restoration.Result：The levels of endotoxin,AST,and ALP for these two PFM have increased in the first week（P 0.05）,declined after 1 monthand tended to be more stable after 3and 6 months.Conclusion：The cobALP-chromium PFM and titanium PFM both do some effects to the levels of GCF,endotoxin,AST and ALP,but they show no differences after six-months＇ restoration compared to before the restoration.It suggestts that these two materials are safe to be PFM material in clinic.