Abstract
Objective: The purpose of this study was to assess the sealing ability of three different temporary
restorative materials on endodontic access cavities as compared to radiated and nonirradiated
teeth. Materials and Methods: All teeth were randomly divided into two main groups according to the presence or
absence of the radiotherapy. The specimens in these groups were then divided into
three subgroups of 12 teeth each, and into two control groups of eight teeth each
as negative and positive control groups. In radiotherapy groups, radiotherapy (1.8
Gy) was applied daily over 35 days resulting in a total application of 63 Gy. Standardized
occlusal endodontic access cavities were prepared in all groups. A cotton pellet was
placed on the pulp chamber. The access cavities were restored with three temporary
filling materials; first fill, Cavit-G and Cavisol. The specimens were immersed in
2% methylene blue solution and centrifuged at 3000 rpm for 5 min. Results: Although there was no statistical difference among the three materials for the groups
in which radiotherapy was not applied (P > 0.05), it was found that the sealing abilities of Cavit-G and Cavisol were not
affected by radiotherapy (P > 0.05). However, the leakage values of the light-cured polymerized temporary filling
material, first fill, were increased when radiotherapy was performed (P < 0.05). Conclusion: The radiotherapy application reduces the sealing ability of the light-cured temporary
filling material, first fill.
Keywords
Dental leakage - dental restoration - radiotherapy - temporary