Persistence of resinous cement residues in dentin treated with different chemical removal protocols

Kuga, Milton Carlos; Só, Marcus Vinícius Reis; Faria-Júnior, Norberto Batista de; Keine, Kátia Cristina; Faria, Gisele; Fabrício, Semíramis; Matsumoto, Mariza Akemi

doi:10.1002/jemt.22023

Cited by 27 publications

(43 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…7,20,21 Ethanol is routinely recommended as a chemical solution for removal of sealers from the pulp chamber; however, ethanol cannot completely remove the sealer residues from dentin. 7 Although xylol is recommended as a solvent for epoxy resin-based sealer, it also does not completely remove sealer residues from the dentin surface.…”

Section: Discussionmentioning

confidence: 99%

“…The material was left undisturbed on the dentin surface of each specimen for 15 min. 20 Then, the specimens were divided into 4 groups (n = 10 each), according to the dentin cleaning protocol and acid etching time. G1 (E-I-AE) was cleaned with 95.0% ethanol and immediately acid etched; G2 (X-I-AE) was cleaned with xylol and immediately acid etched; G3 (E-D-AE) was cleaned with 95.0% ethanol and acid etched 7 days later, and G4 (X-D-AE) was cleaned with xylol and acid etched 7 days later.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Effect of the time-point of acid etching on the persistence of sealer residues after using different dental cleaning protocols

et al. 2016

Self Cite

View full text Add to dashboard Cite

Endodontic sealer residues remaining within the pulp chamber dentin after root canal obturation and cleaning with various solvents may compromise the appearance and the durability of dental restorations. Acid etching is routinely performed prior to application of dentine adhesive systems, but is effect on residual sealer material and the optimal time-point for performing etching, are unknown. Here, we evaluated the effect of acid etching on the dentin surface when performed either immediately or 7 days after removal of the endodontic sealer with two solvents, i.e., 95% ethanol or xylol. Forty crowns fragments from bovine incisors were impregnated with sealer and divided into 4 groups (n = 10 each), according to the dentin cleaning protocol and to the acid etching time-point: G1, 95.0% ethanol and immediate acid etching; G2, xylol and immediate acid etching; G3, 95.0% ethanol and acid etching after 7 days; and G4, xylol and acid etching after 7 days. Scanning electron microscopy (SEM) images (2000 ×) were obtained from each specimen and the number of open dentinal tubules counted and compared. Another 40 fragments were similarly prepared, and SEM images were obtained (500 ×) to score and compare the persistence of sealer residues on the dentin. G4 showed the most open dentinal tubules and the least epoxy resin-based sealer residues on the dentin surface (p < 0.05). The least epoxy resin-based sealer residues was obtained when acid etching, using 37% phosphoric acid, was performed after 7 days after cleaning the dentin with xylol.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Effect of the time-point of acid etching on the persistence of sealer residues after using different dental cleaning protocols

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…The most commonly used solvent for the removal of debris from the pulp chamber after root canal obturation is 95% ethanol (Gutman and Withersponn,2002; Kuga et al,2012). In the present study, the 99.5% ethanol applied on dentin adhesive surface promoted better results than acetone.…”

Section: Discussionmentioning

confidence: 99%

“…In the present study, the 99.5% ethanol applied on dentin adhesive surface promoted better results than acetone. However, when ethanol was used to remove resinous‐based cement, the dentin surface showed covered with residues (Kuga et al,2012). Thus, the cement composition interferes in cleaning capability solution and explains the differences between the several studies.…”

Section: Discussionmentioning

confidence: 99%

Persistence of endodontic methacrylate‐based cement residues on dentin adhesive surface treated with different chemical removal protocols

Kuga

Só

Campos

et al. 2012

Microscopy Res & Technique

Self Cite

View full text Add to dashboard Cite

The aim of this study was to evaluate the persistence of methacrylate-based cement residues on the dentin, after dentin surface cleaning with ethanol or acetone, with or without previous application of a dentin adhesive. Forty bovine crown fragments were obtained and the dentin surface was washed with 1.0 mL of 2.5% sodium hypochlorite (NaOCl), followed by 0.1 mL of 17% ethylenediaminetetraacetic acid 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. In 20 specimens, previously to cement, a dentin adhesive was applied in all surfaces. After 15 min, the surface was scrubbed with a cotton pellet and moistened with ethanol or acetone, compounding the following groups: G1-99.5% ethanol and G2-acetone, without previous use of dentin adhesive; G3-99.5% ethanol and G4-acetone, with previous use of dentin adhesive. The dentin surface was scrubbed until the cement residues could not be visually detected. Sections were then processed for scanning electron microscopy and evaluated at 500× magnification and scores were attributed to each image according to the area covered by residual sealer, and data were subjected to Kruskal-Wallis at 5% significance. The lower residue presence was observed in G3 (P = 0.005). All surface presented cement residues when acetone was used as cleaning solution (P = 0.0005). The cleaning solutions were unable to completely remove the cement residues from both surfaces. The ethanol used after previous application of the dentin adhesive promoted the lower presence of residues.

show abstract

“…All images were obtained by only one operator. The analysis and persistence of residues were performed according to Kuga, et al ().…”

Section: Methodsmentioning

confidence: 99%

Effect of the calcium silicate‐based sealer removal protocols and time‐point of acid etching on the dentin adhesive interface

Morais

Victorino

Escalante-Otárola

et al. 2018

Microscopy Res & Technique

Self Cite

View full text Add to dashboard Cite

The aim of the study was to evaluate the effects when acid etching on the dentin surface was immediately performed (I) or 7 days (D) after calcium silicate-based sealer (MTA Fillapex) removal, using 95% ethanol (E) or xylol (X). First study, 60 bovine incisor dentin specimens were impregnated with sealer and divided into six groups (n = 10): (EI), E + I; (XI), X + I; (ED), E + D; (XD), X + D, (UN), untreated and (MR), mechanical removal of sealer. Scanning electron microscopy (SEM) images (500×) were obtained from each specimen and scores assessed the sealer residues persistence. Second study, 60 specimens were similarly treated; however, the specimens were restored with composite resin after the removal protocols. Hybrid layer formation was evaluated using confocal laser microscopy (1,024×). Third study, 60 specimens were similarly obtained and subjected to micro-shear test to evaluate the effects of removal protocols on the bond strength of etch-and- rinse adhesive system to dentin. XI showed the highest persistence of sealer residues (p < .05), similar to MR (p > .05). EI showed the greatest hybrid layer extension, except in relation to UN (p < .05). XI and MR presented the lowest bond strength adhesive system to dentin (p < .05). Acid etching immediately after calcium silicate-based endodontic sealer removal using xylol presented the highest residues persistence and negatively affected the adhesive interface between dentin and etch-and-rinse adhesive system.

show abstract

Persistence of resinous cement residues in dentin treated with different chemical removal protocols

Cited by 27 publications

References 22 publications

Effect of the time-point of acid etching on the persistence of sealer residues after using different dental cleaning protocols

Effect of the time-point of acid etching on the persistence of sealer residues after using different dental cleaning protocols

Persistence of endodontic methacrylate‐based cement residues on dentin adhesive surface treated with different chemical removal protocols

Effect of the calcium silicate‐based sealer removal protocols and time‐point of acid etching on the dentin adhesive interface

Contact Info

Product

Resources

About