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The Clinical Comparative Analysis of Zirconia All-ceramic Anterior Crowns with Nickel Chromium Alloy Porcelain Crown

MA Shichun,LIU Yingkai.Department of Stomatology,Central Hospital of Panzhihua City,Sichuan Province 617067  
Objective:To compare and analyze the efficacy and safety of zirconia all-ceramic anterior crowns with nickel chromium alloy porcelain crown for the restoration of the front teeth.Methods:Analyze retrospectively the treatment information and follow-up data for 31 cases of all-ceramic crowns using cobalt dioxide and 45 patients with nickel-chromium alloy-porcelain crown for front teeth to repair defects in patients of our hospital.Compare the two materials for anterior teeth defects restored,the edge of the adaptation,crown fracture,collapse porcelain,color and gum edge dyeing,etc.Take the adverse reactions for statistics after restoration.Evaluate comprehensively the clinical efficacy and safety of zirconia all-ceramic anterior crowns with nickel chromium alloy porcelain crown for the restoration of the front teeth.Results:The edge of the adaptation,crown fracture,collapse of porcelain,color and gum edge dyeing conditions all-ceramic crown cobalt dioxide in the repair and follow-up 30 months time were significantly better than the nickel-chromium alloy-porcelain crown.Cobalt dioxide all ceramic crown showed no adverse reactions,and nickel-chromium alloy of 9 cases were with different adverse reactions,accounting for 20.0%.There were significant differences for the above comparisons(P0.05).Conclusion:The all-ceramic crown cobalt dioxide used to repair the anterior teeth defects has obvious security benefits and efficacy advantages than nickel-chromium alloy-porcelain crown,but the price is the reason that it can not promote.
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