Advisory Committee Chair
John O Burgess
Advisory Committee Members
Deniz Cakir
Firoz Rahemtulla
T Madelyn Coar
Matk Stephan Litaker
Document Type
Thesis
Date of Award
2008
Degree Name by School
Master of Science (MS) School of Dentistry
Abstract
Zinc oxide eugenol sealers have been used clinically for several years. Glass ionomer sealers were introduced due to their adhesion to the dental hard tissues and excellent sealing ability. During the process of endodontic treatment a post, core and final restoration is required for tooth restoration. Recently fiber reinforced composite posts have become more popular because of their mechanical properties and esthetics. However, fiber posts have to be adhesively cemented into root canal which can be affected by the endodontics sealers. The purpose of this study was to evaluate the effect of eugenol and non-eugenol containing sealers on the retention of fiber posts and to evaluate the apical sealing ability of both sealers. Forty extracted human single rooted teeth were instrumented to simulate the conventional root canal therapy and divided into two groups (n=20); one was obturated with gutta-percha and zinc oxide eugenol and the other was obturated with gutta-percha and glass ionomer sealer. Gutta-percha was removed and a standardized post space was prepared. The fiber posts were cemented in each group either, with Rely X Unicem or Panavia F 2.0 and ED Primer II system. Each root was sectioned in to three parts. A iii push-out test and SEM evaluation were applied for all groups. Bond strengths were analyzed using three-way ANOVA for the combination of the cement, sealer and sections. The results showed no statistically significant difference in bond strength within the two resin luting systems and the tooth sections. For microleakage, the apical third section of each root was covered with a nail polish. The specimens were immersed into 50% silver nitrate dye and cleared. The maximum dye penetration was measured and compared using T-test analysis. There was a statistically significant difference among the two sealers. Zinc oxide eugenol showed (2.07±0.36) and glass ionomer sealer (1.5± 0.269).
Recommended Citation
Najib, Farrah Huthail, "Endodontic Sealers-Their Properties And Effects On Fiber Post Retention" (2008). All ETDs from UAB. 3611.
https://digitalcommons.library.uab.edu/etd-collection/3611