Effect of different protocols of eugenol removal on the bond strength between the fibre post and root dentin

Oliveira, Emanuele de; Cecchin, Doglas; Miyagaki, Daniela Cristina; Moura, Ana L C de; Disarz, Alana; Souza, Matheus Albino; Farina, Ana Paula

doi:10.1111/aej.12304

Cited by 11 publications

(11 citation statements)

References 21 publications

(61 reference statements)

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“…Our results also indicate that the use of isopropyl alcohol, either by immersion in an ultrasonic bath or by washing, in combination with sandblasting, is the best way to remove any eugenol residues, thus significantly enhancing the retention (Table 3). This finding is in agreement with de Oliveira et al, who observed the efficacy of different cleaning protocols/agents on the bond strength of dental fiber post and root dentin (de Oliveira et al, 2019). After testing saline solution, acetone, 70% ethanol, and 70% isopropyl alcohol, it was found that with the two alcohols, higher bond strengths were obtained.…”

Section: Discussionsupporting

confidence: 92%

The effect of different cleansing methods for removing temporary cement on the tensile bond force of permanently cemented implant‐supported metal copings: An in vitro study

Ebadian

Jowkar

Davoudi

et al. 2022

Clinical & Exp Dental Res

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Objectives Complete cleaning of temporary cement before permanent cementation of cement‐retained implant‐supported prosthesis (CISP) when recementing the crown is critical. This study evaluated the effect of different cleaning methods for removing traces of temporary cement on the final tensile bond force (TBF) of CISP recemented with resin cement. Materials and Methods Seventy computer‐aided design/computer‐aided manufacturing metal implant‐supported copings were prepared and distributed into seven groups (N = 10). Copings of six groups (60 samples) were cemented with temporary cement with eugenol and subjected to 5000 thermocycling. After debonding by a universal testing machine, the internal surfaces of the copings were cleaned using one of the six following methods: 1‐an ultrasonic water bath (UW), 2‐sandblasting, then washing with water (SW), 3‐sandblasting and an ultrasonic water bath (SUW), 4‐an ultrasonic isopropyl alcohol bath (UA), 5‐sandblasting, then washing with isopropyl alcohol (SA) or 6‐sandblasting and an ultrasonic isopropyl alcohol bath (SUA). Then the subjects were subsequently cemented by dual‐cure self‐adhesive resin cement. In the seventh group (control, N = 10), the copings were cemented by dual‐cure self‐adhesive resin cement without the temporization phase. The TBF was tested using a universal testing machine with a cross‐head speed of 1 mm/min. Two‐way analysis of variance (ANOVA) and post‐hoc Tamhane tests were used for statistical analysis at a significance level of α = .05. Results The maximum mean of TBF value was observed in SUA group (845 ± 203 N), and the minimum was observed in the temporary cement group (49 ± 20 N). All groups which were cleaned with isopropyl alcohol showed significantly higher TBF values compared with those cleaned with water. Conclusions Cleaning of the inner surface of metal copings after debonding with sandblasting and isopropyl alcohol results in the highest value of TBF by eliminating the effect of remaining eugenol and removing traces of temporary cements.

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Section: Discussionsupporting

confidence: 92%

The effect of different cleansing methods for removing temporary cement on the tensile bond force of permanently cemented implant‐supported metal copings: An in vitro study

Ebadian

Jowkar

Davoudi

et al. 2022

Clinical & Exp Dental Res

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“…The excessive use of acetone may negatively affect the bond strength as a result of collagen fiber collapse. 33 However, this assumption warrants further investigation.…”

Section: Discussionmentioning

confidence: 94%

Microtensile bond strength to sealer-contaminated dentin after using different cleaning protocols

Zang

Liang

2022

Journal of Dental Sciences

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Background/purpose Sealer residues on dentin may affect bonding to restorative materials. This study aimed to evaluate the bond strength to sealer-contaminated dentin after using different cleaning protocols. Materials and methods Freshly extracted bovine incisors were prepared and exposed the buccal pulp chamber dentin, obtaining segments measuring 5 mm × 5 mm with a height of 3 mm. The segments were randomly distributed into 4 groups (n = 7) according to different protocols. Control group : no contamination was performed. In the three experimental groups, the segments were contaminated with epoxy resin-based sealer for 5 min, and different cleaning protocols were performed. Acetone group : acetone-saturated cotton pellets were used to wipe the sealer. Ultrasound group : ultrasonic ET-20D tip cleaning. Acetone combined with ultrasound group : cleaning with acetone-saturated cotton pellets and ultrasonic tip. All segments were bonded using a self-etch adhesive. Two samples in each group were scanned by swept-source optical coherence tomography (SS-OCT) to evaluate sealer residues. A microtensile test was performed on the remaining 5 samples, which were built up with composite resin. Results Sealer residues were observed in 3 of 14 (21.4%) sections of acetone group by SS-OCT. Compared to the control, ultrasound alone or in combination with acetone preserved the bond strength (P > .05). The ultrasound group exhibited the highest bond strength (39.38 MPa), which differed from that of the acetone group, which provided the lowest bond strength (32.88 MPa) (P < .05). Conclusion Cleaning epoxy resin-based sealer-contaminated dentin surfaces using ultrasound or combined with acetone could preserve the bond strength.

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“…Pure acetone (propanone) protocol also decreased the dentin microhardness but was not comparable to amyl acetate. It may be attributed to dentin dehydration since acetone dehydrates the specimens during the microscopic analysis 12 . Nevertheless, 95% ethanol showed lower deleterious effects on dentin 28 …”

Section: Discussionmentioning

confidence: 99%

“…In contrast, 95% ethanol (ET) is a hydrated polar solvent with a strong molecular bonding with water 1,7,8 . Thus, the miscibility between them is low, the persistence of sealer residues after cleansing using ET on dentin surface is high, and therefore, it is not the most effective method 8,12,13 …”

Section: Introductionmentioning

confidence: 99%

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Cleaning and microstructural effects of amyl acetate on pulp chamber dentin impregnated with epoxy resin‐based endodontic sealer

Zaniboni

Souza

Escalante-Otárola

et al. 2022

J Esthet Restor Dent

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Objective To evaluate the cleaning potential of 95% ethanol, acetone, and amyl acetate solutions used solely or in association, to remove epoxy resin‐based sealer residues from pulp chamber dentin and their microstructural effects. Materials and Methods One hundred and eighty bovine incisor specimens were divided into nine groups according to the cleaning protocol: ET (ethanol); AC (acetone); AA (amyl acetate); E1: AA+AC; E2: AA+ET; E3: AC+ET; E4: AA+AC+ET; PC (positive control), and NC (negative control). All groups were impregnated with epoxy resin‐sealer, except NC. Ninety specimens were divided into groups (n = 10) for evaluation of persistence of residues and amount of open dentinal tubules by SEM analysis and evaluation of chemical compounds on the dentin surface after cleaning with electron dispersive spectroscopy. The others 90 specimens were submitted to Knoop microhardness evaluation. Persistence of residues data were submitted to the Kruskal Wallis and Dunn tests (α = 0.05). Open dentinal tubules and microhardness data were submitted to one‐way ANOVA and Mann Whitney tests (α = 0.05). Results AA and E4 protocols showed the lowest persistence of residues. E4 group had the highest incidence of open dentinal tubules. E3 and E4 groups showed no changes in the atomic ratio Ca/P, which was similar to NC group. E4 group did not present W, an element presents in all the other groups. ET and E4 protocols showed the smallest reduction in dentin microhardness. Conclusions The combination of amyl acetate, acetone and ethanol is the most effective and safe protocol to remove epoxy sealer residues on pulp chamber dentin. Moreover, it has the lowest microhardness reduction. Clinical Significance The combined use of amyl acetate, acetone, and ethanol enhanced the cleaning of pulp chamber dentin with minimal microstructural damage.

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Effect of different protocols of eugenol removal on the bond strength between the fibre post and root dentin

Cited by 11 publications

References 21 publications

The effect of different cleansing methods for removing temporary cement on the tensile bond force of permanently cemented implant‐supported metal copings: An in vitro study

The effect of different cleansing methods for removing temporary cement on the tensile bond force of permanently cemented implant‐supported metal copings: An in vitro study

Microtensile bond strength to sealer-contaminated dentin after using different cleaning protocols

Cleaning and microstructural effects of amyl acetate on pulp chamber dentin impregnated with epoxy resin‐based endodontic sealer

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