Wettability of an epoxy resin-based root canal sealer on dentin treated with different chelating protocols

Marcela Baraúna MAGNO, Maíra do PRADO, Renata A. SIMÃO, Kawanne Ferreira Moraes MEDEIROS, Patricia de Almeida RODRIGUES, Oscar Faciola PESSOA

Evaluate the wettability of AH Plus in contact with root dentin after different chelating protocols involving etidronic acid (HEBP) and EDTA. Material and Methods: Fifty six human polished root dentin slices were used. They were irrigated with 5.25% sodium hypochlorite (NaOCl) or a mixture of 5.25%NaOCl/18%HEBP to simulate irrigation during chemomechanical preparation. The specimens irrigated with NaOCl were divided into 5 groups regarding chelating agents: G1-destiled water (DW); G2- 17%EDTA; G3-17%EDTA+2.5%NaOCl; G4-18%HEBP; and G5-18%HEBP+2.5%NaOCl. The specimens irrigated with the mixture NaOCl/HEBP were divided into 2 groups: G6-DW; G7-NaOCl/HEBP+2.5%NaOCl. All protocols received irrigation with DW between irrigants and as final rinse. Rame-Hart goniometer was used to measure the contact angle between the dentin surfaces and the sealer. Kruskal-Wallis and Dunn tests were applied (p<0.05). Results: Groups in which the smear layer was removed showed a lower contact angle (p<0.05), except for G7. The G6 showed the lowest contact angle of AH Plus, but the NaOCl final irrigation (G7) increased the angle. G2 and G4 have similar behaviour and final irrigation with NaOCl (G3 and G5) did not change wettability when these chelators were used. Conclusions: The mixture NaOCl/HEBP showed good effect on the wettability of sealer on to the root canal dentine, when used as main irrigant.

Keywords: Root Canal Irrigants. Chelating Agents. Wettability. Edetic Acid. Etidronic Acid.

How to cite: Magno MB, Prado M, Simão RA, Medeiros KFM, Rodrigues PA, Pessoa OF. Wettability of an epoxy resin-based root canal sealer on dentin treated with different chelating protocols. Dental Press Endod. 2021 Sept-Dec;11(3):24-30.

Monday, May 06, 2024 18:08