三种不同材料烤瓷冠对龈沟液内天冬氨酸转氨酶和碱性磷酸酶水平的影响

目的:通过对不同材料的烤瓷冠修复后龈沟液(gingivalcrevicularfluid,GCF)内天冬氨酸转氨酶(aspartatetransaminase,AST)和碱性磷酸酶(alkalinephosphatase,ALP)总量的测定,来探讨内冠材料对牙周的影响。方法:选择临床病例26例,采用镍铬合金烤瓷冠、钛合金烤瓷冠和金铂合金烤瓷冠修复,分别在修复前、修复后1个月和3个月进行临床检查和取GCF,进行GCF量和AST、ALP总量的测定,从而进行分析。结果:1个月时,3组之间并未见指标差异;3个月时镍铬合金组和钛合金组之间未见指标差异,此时镍铬合金组和钛合金组分别与金铂合金组在指标上均有明显差异。结论:非贵金属对牙周组织有不利影响,同时通过测定GCF中AST和ALP的总量,可以方便的动态观察烤瓷冠对牙周的影响。

Effect of three different PFM materials on the level of AST and ALP in gingival crevicular fluid

Objective:To investigate the effect of different inner crown materials on periodontal tissue by means of measuring the amount level of AST and ALP in gingival crevicular fluid(GCF)after PFM restoration.Methods:The anterior teeth of 26 patients by random were restored by Ni-Cr alloy PFM,Ti alloy PFM and Au-Pt alloy PFM.GCF was collected from labial and lingual of mesial site and distal site before the tooth preparation by filter paper.At the point of 1 month and 3 months after cementation,GCF was collected at the same sites.The level of AST and ALP were detected by automated chemical analyzer,and analyzed the variation between the pre-restoration and post-restoration.Results:Compared to pre-restoration,all indexes have no conspicuous difference among three groups after 1 month;Ni-Cr alloy group have no difference with Ti alloy group after 3 months.However,Au-Pt alloy group has conspicuous difference with Ni-Cr alloy group and Ti alloy group respectively.Conclusion:Non-noble metal has badnon-favorable effect on the periodontal tissue.It canis easily and correctly to observe the effect of periodontal tissue dynamicallyin the dynamic state after PFM restoration by means of measuring the amount of AST and ALP in GCF.