BITENCOURT, Paloma Mariana Ramos; BRITTO, Maria Letícia Borges    NABESHIMA, Cleber Keiti. Evaluation of sealing ability of two temporary resin-based cements used in Endodontics. RSBO (Online) []. 2010, 7, 3, pp. 269-274. ISSN 1984-5685.

INTRODUCTION: The outcome of endodontic treatment is related to the sealing ability of temporary dental restoration, which aims to prevent bacterial infiltration and recontamination of the root canal system. OBJECTIVE: The purpose of this study was to evaluate the sealing ability of two temporary resin-based cements: Fill Magic Tempo and Bioplic. MATERIAL AND METHODS: Twenty-four third molars were used, and twenty-two of them were opened to the pulp chamber (resulting in a class I cavity) and randomly divided: group 1 was restored using Fill Magic Tempo (n = 10) and group 2 was restored using Bioplic (n = 10). The negative control group was not opened (n = 2), and the positive control group was opened but not restored (n = 2). Then the root and apex of the teeth were varnished to become impermeable. All samples were immersed in 2% methylene blue and kept at 37ºC for 72h. After longitudinal sectioning, the linear leakage was measured in mm. In sequence, the statistical analysis was performed using Mann-Whitney test with a level of significance of 5%. RESULTS: Most part of the samples showed leakage of 1 mm, and only the negative control group showed total leakage. There was no significant difference between the tested materials. CONCLUSION: It is possible to conclude that both resin-based cements showed satisfactory results on sealing ability during endodontic treatment.

: temporary dental restoration; Endodontics; dental leakage.