Three temporary materials: analysis of marginal infiltration in vitro

Abstract

Restorative materials that avoid marginal leakage are fun- damental to prevent the conta- mination of root canal system, therefore improving endodontic therapy success. The aim of this study was to evaluate three diffe- rent temporary sealing materials. Seventy-two extracted human one-rooted premolars were en- dodontically instrumented with the root canal and pulp chamber being filled with an absorbent paper cone and a cotton ball im- pregnated with an alcoholic solu- tion of 1% dimetylglyoxime. The pulp chambers were sealed with either IRMÒ, ColtosolÒ or BioplicÒ. The teeth were, then, immersed in a solution of 5% nickel sulphate for 3 to 14 days. Marginal leaka- ge was measured with a stereos- copic microscope and the results statistically analyzed using the Kruskal-Wallis test. All three ma- terial showed some leakage. Ho- wever, IRMÒ was the worst and there were no statistically signifi- cant differences between ColtosolÒ and BioplicÒ. Key words: marginal fit, leakage, temporary restoration, crown sea- ling, root canal treatment.