Ethanol is inefficient to remove endodontic sealer residues of dentinal surface

Resumo

Endodontic sealer residues on dentinal surface have
negative effects on adhesion of adhesives system and/or can cause
discoloration of the dental crown. Objective: To evaluate the efficacy
of 95% ethanol in removal of residues of epoxy-based (AH Plus),
methacrylate-based (Epiphany SE) or calcium-based (Sealapex)
sealers on dentinal surface. Material and methods: Thirty-two
bovine incisor dental crown fragments (0.5 mm x 0.5 mm) were
treated with 17% EDTA and 2.5% NaOCl. The specimens were
divided into three experimental groups (n = 10): G1 (AH Plus),
G2 (Epiphany SE) and G3 (Sealapex). In each group was applied
a coating of one endodontic sealer type and were left undisturbed
for 5 minutes. After this period, the specimens were cleaned with
95% ethanol. The control group was composed by two specimens
that did not receive any sealer or cleaning treatment. The sealer
residues persistence after cleaning with 95% ethanol was evaluated
by scanning electron microscopy (x500) and a score system was applied. Data obtained were analyzed by Kruskal-Wallis and Dunn
tests (α = 5%). Results: Moderate amount of endodontic sealer
residues were observed in all groups, regardless of the endodontic
sealer compositions. G1, G2 and G3 presented similar amount of
sealer residues on dentinal surface after cleaning with 95% ethanol
(p > 0.05). Conclusion: 95% ethanol was inefficiency to remove
completely AH Plus, Epiphany SE and Sealapex residues of sealercontaminated dentin.