ارزيابي باليني ترميم هاي آمالگام باند شونده در دندان هاي پرمولر معالجه ريشه شده

Clinical evaluation of bonded amalgam restorations in endodontically treated premolar teeth

Introduction: There are controversies about the clinical efficiency of bonded amalgam restprations. The aim of this clinical study was comparison of fracture resistance, marginal adaptation and recurrent caries in endodontically-treatedpremolar teeth.Methods and Materials: Thirty five patients with endodontically treated upper first or second premolars were selected and divided into three groups. Copalite varnish in group A, Amalgam bond plus in group B and Scotchbond Multi Purpose in group C were applied as a sealer. The teeth in all three groups were restored with intracanal pin and amalgam in combination with lingual cusp coverage. After 1 year, fracture resistance, marginal adaptation and secondary caries were evaluated. Fischerʹs exact test was used for statistical analysis (a == 0.05).Results: There was no significant difference among groups with respect to fracture resistance (p value = 0.3). Significant differences in marginal adaptation existed between the three groups (p value = 0.01). No recurrent caries were found in clinical and radiographic evaluation of restored teeth.Conclusion: In one-year clinical period\ using Amalgam bond Plus or Scotchbond Multi Purpose as dentine bondings to bond complex amalgam restorations in endodontically treated premolar teeth, there was no increase in fracture resistance of restorations and teeth and this treatment had no effect on prevention of recurrent caries, but resulted in significant improvement in marginal adaptation.