Influence of Three Kinds of Crown Margin Designs on IL-1β, AST and OPN Levels in Gingival Crevicular Fluid

Objective:By exploring the different crown margin designs of the porcelain fused to metal crowns on gingival crevicular fluid levels of IL-1β,AST and OPN,to provide the right edge design.Methods:32cases were the maxillary anterior teeth(56teeth).They were designed the different crown edge with nickel chromium alloy porcelain crown.Before the repair,1,3,6,and 12months after the repair were detected by analysis of the periodontal clinical indicators,and application of ELISA method and automatic biochemical analyzer measurement gingival crevicular fluid IL-1β,AST,OPN content.Results:Three sets of repair design periodontal clinical indicators and gingival crevicular fluid cytokines in the six months after repair enzymes levels change in significantly increased,the difference was statistically significant(P0.05)late along with the extension of the time to repair changes amount stabilized.Indicators compared between the three groups:group B periodontal clinical indicators and gingival crevicular fluid in the expression level was significantly less than the A,C group,the difference was statistically significant(P0.05).Conclusion:Nickel-chromium alloy porcelain repair crowns Whatever crown margins on periodontal repair design will have a negative stimulus,stimulation of periodontal beveled shallow concave shoulder group due to the combination of rectangular shoulder blade-like edge group.