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Persistence of resinous cement residues in dentin treated with different chemical removal protocols
Author(s) -
Kuga Milton Carlos,
Só Marcus Vinicius Reis,
De Fariajúnior Norberto Batista,
Keine Kátia Cristina,
Faria Gisele,
Fabricio Semíramis,
Matsumoto Mariza Akemi
Publication year - 2012
Publication title -
microscopy research and technique
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 118
eISSN - 1097-0029
pISSN - 1059-910X
DOI - 10.1002/jemt.22023
Subject(s) - dentin , eucalyptol , sodium hypochlorite , dentistry , cement , chemistry , pulp (tooth) , ethanol , isopropyl alcohol , materials science , nuclear chemistry , composite material , chromatography , essential oil , medicine , organic chemistry
The aim of this study was to evaluate the persistence of resin cement residues after dentin surface cleaning with different alcohol‐based solutions or an essential oil (eucalyptol). Forty bovine teeth were sectioned in order to expose pulp chamber dentin to be washed with 1.0 mL of 2.5% sodium hypochlorite (NaOCl), followed by 0.1 mL of 17% EDTA application for 3 min, and final irrigation with 2.5% NaOCl. The specimens were air dried and resin‐based cement was rubbed onto the dentine surface with a microbrush applicator. After 15 min, the surface was scrubbed with a cotton pellet and moistened with different dentin cleaning solutions, compounding the following groups: G1—95% ethanol, G2—70% ethanol, G3—70% isopropyl alcohol, or G4—eucalyptol. The dentin was scrubbed until the cement residues could not be visually detected. Sections were then processed for SEM and evaluated at ×500 magnification. Scores were attributed to each image according to the area covered by residual sealer, and data were subjected to Kruskal–Wallis at 5% significance. Eucalyptol promoted the most adequate dentin cleaning, although no statistical difference was detected amongst the groups ( P > 0.05), except between the eucalyptol and 70% ethanol groups ( P < 0.05). All the evaluated dentin cleaning solutions were unable to completely remove the cement residues from the dentin surface. Microsc. Res. Tech., 2012. © 2012 Wiley Periodicals, Inc.