Clinical application of Ceramage inlay to the type II cavity of posterior teeth

Objective To compare the therapeutic effect of two Ceramage inlay(spolygon surface inlay and onlay)on therestorations of posterior teeth.Methods A total of 200 inlays made of Ceramage were used in typeⅡcavity of posteriorteeth after perfect root canal therapy from 2005 to 2008,including 100 polygon surface inlays and 100 onlays;Kruskal-Walls rank sum test was used to evaluate the appearance,edge fitness,color,recurrent caries,abrasion,and fractureof the inlay after 6 months,12 months,24 months and 36 months.Results The two inlays had no significant changes after 6,12,24 and 36 months.There were 5 failures:1 onlay was damaged,1 onlay slapped,2 onlays were found tumbled,1 polygon surface inlay was in good condition,but the tooth damaged.Conclusion Ceramage is a good kind of resin forthe posterior restoration;the polygon surface inlay reserves more tooth and is better to serve life and biomechanics principle.