title: Soft chelating irrigation protocol optimizes bonding quality of Resilon/Epiphany root fillings.
abstract: This study was designed to test the impact of either a strong (MTAD) or a soft (1-hydroxyethylidene-1, 1-bisphosphonate [HEPB]) chelating solution on the bond strength of Resilon/Epiphany root fillings. Both 17% EDTA and the omission of a chelator in the irrigation protocol were used as reference treatments. Forty extracted human upper lateral incisors were prepared using different irrigation protocols (n = 10): G1: NaOCl, G2: NaOCl + 17% EDTA, G3: NaOCl + BioPure MTAD (Dentsply/Tulsa, Tulsa, OK), and G4: NaOCl + 18% HEPB. The teeth were obturated and then prepared for micropush-out assessment using root slices of 1 mm thickness. Loading was performed on a universal testing machine at a speed of 0.5 mm/min. One-way analysis of variance and Tukey multiple comparisons were used to compare the results among the experimental groups. EDTA- and MTAD-treated samples revealed intermediate bond strength (0.3-3.6 MPa). The lowest bond strengths were achieved in NaOCl-treated samples (0.3-1.2 MPa, p < 0.05). The highest bond strength was reached in the HEBP-treated samples (3.1-6.1 MPa, p < 0.05). Under the present in vitro conditions, the soft chelating irrigation protocol (18% HEBP) optimized the bonding quality of Resilon/Epiphany (Resilon Research LLC, Madison, CT) root fillings.
authors.affiliation: Veiga de Almeida University, Rio de Janeiro, Brazil. endogus@gmail.com
authors.forename: Gustavo
authors.initials: G
authors.lastname: De-Deus
authors.forename: Fátima
authors.initials: F
authors.lastname: Namen
authors.forename: João
authors.initials: J
authors.lastname: Galan
authors.forename: Matthias
authors.initials: M
authors.lastname: Zehnder
mesh_terms: D002614:Chelating Agents; D019343:Citric Acid; D001840:Dental Bonding; D003799:Dental Stress Analysis; D004318:Doxycycline; D004492:Edetic Acid; D006801:Humans; D007180:Incisor; D010654:Phenylbutyrates; D011136:Polysorbates; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; D012389:Root Canal Obturation; D012973:Sodium Hypochlorite
chemical_list: D002614:Chelating Agents; C475043:MTAD (intracanal irrigant); D010654:Phenylbutyrates; D011136:Polysorbates; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; C486893:epiphany sealer; C486892:resilon sealer; D019343:Citric Acid; C020361:gamma-hydroxy-gamma-ethyl-gamma-phenylbutyramide; D004492:Edetic Acid; D012973:Sodium Hypochlorite; D004318:Doxycycline