不同种类金属烤瓷底冠与基牙龈沟液的变化

背景:目前关于非贵金属烤瓷和贵金属烤瓷对牙龈、牙周组织健康影响的研究较多,纯钛与非贵金属、贵金属之间进行比较的研究较少。目的:观察不同种类烤瓷金属材料修复后基牙龈沟液中龈沟液分泌量以及肿瘤坏死因子α和白细胞介素6水平的变化。方法:选择后牙区(前磨牙和磨牙)患者60例,共80颗受试牙,按烤瓷金属内冠材料不同分为3组,钴铬合金组28颗、纯钛烤瓷组32颗、金铂合金烤瓷组30颗。在修复1,3个月后检测龈沟液的分泌量以及肿瘤坏死因子α和白细胞介素6水平。结果与结论:修复后1,3个月钴铬合金组龈沟液分泌量以及肿瘤坏死因子α和白细胞介素6水平明显高于修复前(P<0.05)。修复后1,3个月纯钛组的龈沟液分泌量,肿瘤坏死因子α水平高于修复前(P<0.05),而白细胞介素6水平与修复前比较差异无显著性意义(P>0.05)。修复后1,3个月金铂合金组的各项指标与修复前比较差异无显著性意义(P>0.05)。钴铬合金组龈沟液分泌量、肿瘤坏死因子α和白细胞介素6水平高于纯钛组、金铂合金组(P<0.05)。纯钛组龈沟液分泌量、肿瘤坏死因子α水平高于金铂合金组(P<0.05)。

Effect of different porcelain fused to metal crowns on gingival crevicular fluid

BACKGROUND:The majority of current researches focus on the influence of non-precious metal ceramic porcelain and metal ceramic porcelain on the gingival and periodontal tissue health,but few study reports the effect of pure titanium versus non-precious metals and precious metals.OBJECTIVE:To investigate the changes of gingival crevicular fluid(GCF) secretion,and the level of tumor necrosis factor-α(TNF-α) and interleukin-6(IL-6) in GCF during different materials of porcelain fused-to-metal crowns restoration.METHODS:Sixty patients including 80 premolar and molar teeth were involved as test teeth and divided into three groups according to the materials of porcelain fused-to-metal crowns,Co-Cr alloy group(n=28),pure Ti alloy group(n=32) and gold-platinum alloy group(n=30).At 1 and 3 months after the restorations of crowns,the secretion amounts of GCF,the levels of TNF-α and IL-6 in GCF were detected.RESULTS AND CONCLUSION:The amounts of GCF,the levels of TNF-α and IL-6 in GCF in Co-Cr alloy group at 1 and 3 months post-restoration were remarkably higher than those before restoration(P < 0.05).In Ti alloy group,the secretion of GCF and level of TNF-α were increased compared with before restoration(P < 0.05),but no differences were found in IL-6(P > 0.05).At 1 and 3 months post-restoration,there was no significant difference in various indicators of gold-platinum alloy group compared with before restoration(P > 0.05).The secretion of GCF,the levels of TNF-α and IL-6 in Co-Cr alloy group were higher than those in Ti alloy group and gold-platinum alloy group(P < 0.05).In addition,the amount of GCF and level of TNF-α in Ti alloy group were higher than gold-platinum alloy group(P < 0.05).