Effect of irrigation protocol during post space preparation on the dentin adhesive interface: An in vitro study

Ramos, Alcides de Amorim; Jordão-Basso, Keren Cristina Fagundes; Porto, Thiago Soares; Kuga, Milton Carlos

doi:10.1016/j.prosdent.2020.09.024

Cited by 3 publications

(9 citation statements)

References 29 publications

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“…In our study, the incidence of residues over the post space dentin surface was assessed by SEM, directly on the specimen under evaluation [19,21,22]. Several parameters were used to classify the presence of debris and/or smear layer in root dentin after the chemical-mechanical preparation of root canals [22,23].…”

Section: Discussionmentioning

confidence: 99%

“…Several parameters were used to classify the presence of debris and/or smear layer in root dentin after the chemical-mechanical preparation of root canals [22,23]. However, the characteristic of the residues formed after post space preparation tends to be different, due to the presence of residues from the endodontic filling and/or debris derived from the prosthetic preparation itself [16,21]. Thus, we chosen to evaluate the incidence of residues based on the parameters described by Alencar et al [18], who described the characteristic of the debris formed especially on the post space dentin.…”

Section: Discussionmentioning

confidence: 99%

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Effect of calcium hypochlorite as an irrigant alternative in the removal of methylene blue after photodynamic therapy under the post-space adhesive interface

Besegato¹,

Costa²,

Zaniboni³

et al. 2023

Laser Phys.

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We evaluated the effect of irrigation protocols in removing methylene blue after photodynamic therapy (PDT) in post-space dentin. Bond strength to dentin and failure mode after fiber post cementation was also evaluated. Ninety bovine teeth were endodontically treated. Post-space preparation and PDT mediated by 0.01% methylene blue and diode laser (660 nm) were performed. Three irrigations protocols were tested (n = 10): distilled water (DW), 2.5% sodium hypochlorite (SH), and 6% calcium hypochlorite (CH). Other specimens were used to investigate the bond strength to post-space dentin according to the irrigation protocol and the post cementation system used (RelyX U200 cement (RU) and GC Gold Label 1 glass ionomer cement (GC) in six groups (n = 10): DW-RU, SH-RU, CH-RU, DW-GC, SH-GC e CH-GC. Regardless of the post-space third, DW showed a lower incidence of residues than SH (p < 0.05), but similar to CH. SH showed similar results to CH (p > 0.05). Regarding the bond strength, CH-RU and CH-GC showed higher values compared to the other groups (p< 0.05), but similar to each other. No differences were observed between the other groups (p > 0.05). Cohesive was the most predominant failure. 6% CH to remove methylene blue after PDT favors the bond strength of RelyX U200 and GC Gold Label.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effect of calcium hypochlorite as an irrigant alternative in the removal of methylene blue after photodynamic therapy under the post-space adhesive interface

Besegato¹,

Costa²,

Zaniboni³

et al. 2023

Laser Phys.

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“…No differences were observed among the groups regarding the amount of open dentin tubules within the same third of the post‐space. Even under constant water‐cooling during the post‐space preparation, the heating of the root may occur, which can plastificate the endodontic filling material (Peroba Rezende Ramos et al, 2021). As a result, these plastified residues impregnate over the dentin and cover the tubules (Serafino et al, 2004), which may justify the similar behavior among the irrigation protocols to avoid the formation of CSL.…”

Section: Discussionmentioning

confidence: 99%

“…Another image was obtained from the same location (2000× magnification) for counting the number of open dentinal tubules. The counting was performed as previously described by Peroba Rezende Ramos et al (2021), using an imaging software program (ImageJ; U.S. National Institute of Health).…”

Section: Methodsmentioning

confidence: 99%

Effect of irrigation protocols on chemical smear layer formation over the post‐space dentin

Zaniboni

Escalante-Otárola

Besegato

et al. 2022

Microscopy Res & Technique

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This study evaluated the effect of irrigation protocols using 95% ethanol (ET) or 1% peracetic acid (PA) prior the use of 2% chlorhexidine (CHX) compared to distilled water (DW) on the chemical smear layer (CSL) formation and incidence of open dentin tubules at the apical, medium, and cervical third of the post-space dentin. Scanning electron microscopy (SEM) and electron dispersive spectroscopy (EDS) images were used. Forty bovine roots were endodontically treated. After, post-space preparation was performed and the roots were randomized in four groups (n = 10) according to the irrigation protocol: DW, CHX, CHX-ET and CHX-PA. The chemical composition of CSL and the incidence of open dentin tubules at the post-space thirds were evaluated by EDS (500Â magnification) and SEM (2000Â magnification) images, respectively. Data from chemical composition of CSL were descriptively analyzed, while the incidence of open dentin tubules was evaluated by scores and submitted to Kruskal-Wallis and Dunn test (p = .05). Cl, Bi, and Si were the chemical elements most found over the dentin after the irrigation with CHX and CHX-ET. Moreover, CHX and CHX-ET showed the highest incidence of CSL (p < .05), but without difference between them (p > .05), regardless of the post-space third. DW and CHX-PA showed similar incidence of CSL (p > .05). No difference on the incidence of open dentin tubules was found for any irrigation protocol and post-space third (p > .05). The use of 1% PA prior the post-space irrigation with CHX decrease the incidence of CSL. Research Highlights• The post-space irrigation with chlorhexidine results in the formation of chemical smear layer.• Ethanol is not capable to remove the chemical smear layer.• Peracetic acid is more effective to remove the chemical smear layer.

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“…Post-space irrigation have been used to promote local antisepsis [6][7][8][9] . In this context, sodium hypochlorite is the most recommended antimicrobial solution in endodontics [10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Effect of sodium hypochlorite-based formulations on the adhesion interface after fiber post cementation

COSTA,

MANZOLI,

BESEGATO

et al. 2023

Dent. Mater. J.

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The study evaluated the persistence of residues, bond strength and tags formation of a cementation system after post-space irrigation with different sodium hypochlorite-based irrigants. The groups were divided according to the irrigation protocol (DW: distilled water; SHS: sodium hypochlorite solution; SHG: sodium hypochlorite gel; and, SHT: sodium hypochlorite with surfactant). Forty roots (n=10) were used to evaluate the persistence of residues by scanning electron microscopy. Other forty roots were used to the push-out bond strength test, failure mode and tag formation analyses. Non-parametric data were submitted to Kruskal Wallis and Dunn tests, while parametric data were evaluated by one-way ANOVA. No difference was observed in the persistence of residues. DW showed the highest bond strength and tag formation. Type 2 failure mode was the most frequent in the experimental groups. Compared to control, SHT showed the best performance, since less negative effects on adhesive interface was observed.

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Effect of irrigation protocol during post space preparation on the dentin adhesive interface: An in vitro study

Cited by 3 publications

References 29 publications

Effect of calcium hypochlorite as an irrigant alternative in the removal of methylene blue after photodynamic therapy under the post-space adhesive interface

Effect of calcium hypochlorite as an irrigant alternative in the removal of methylene blue after photodynamic therapy under the post-space adhesive interface

Effect of irrigation protocols on chemical smear layer formation over the post‐space dentin

Effect of sodium hypochlorite-based formulations on the adhesion interface after fiber post cementation

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