Effects of different peracetic acid formulations on post space radicular dentin

Belizário, Lauriê Garcia; Kuga, Milton Carlos; Núñez, Gabriela; Escalante-Otárola, Wilfredo Gustavo; Só, Marcus Vinícius Reis; Pereira, Jefferson Ricardo

doi:10.1016/j.prosdent.2017.08.002

Cited by 18 publications

(22 citation statements)

References 34 publications

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“…While ethylene oxide, [ 22 ] gamma irradiation, [ 23 ] and, more recently, vinegar [ 24 ] have been investigated for their ability to sterilize extracted teeth, most of these were associated with ineffective disinfection or adverse effects on enamel and dentin. [ 25 , 26 , 27 ] In this context, it is interesting to note that emerging studies have indicated that low concentrations of PA do not alter the radicular dentin [ 28 ] or negatively impact bond strength with self-adhesive cement, [ 29 ] or resin sealer [ 30 ].…”

Section: Discussionmentioning

confidence: 99%

Peracetic Acid: A Practical Alternative to Formalin for Disinfection of Extracted Human Teeth

et al. 2021

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Extracted human teeth provide the closest approximation to teeth in situ and play important roles in dental education and materials research. Since extracted teeth are potentially infectious, the Centers for Disease Control recommend their sterilization by autoclaving or disinfection by formalin immersion to ensure safe handling. However, autoclaving is not recommended for teeth with amalgam fillings and formalin is hazardous. The goal of the present study was to investigate the potential of peracetic acid (PA) as an alternative method to achieve reliable disinfection of freshly extracted teeth. A total of 80 extracted teeth were collected for this study. Whole teeth were incubated in one of four solutions for defined periods of time: sterile water (2 weeks), formalin (2 weeks), PA 1000 ppm (2 weeks), and PA 2000 ppm (1 week). After sectioning, the crown and root fragments were transferred into separate tubes containing brain–heart infusion broth and incubated at 37 °C under anaerobic conditions for 72 h. Absence of broth turbidity was used to assess effectiveness of disinfection. No turbidity was observed in any of the formalin-treated or peracetic acid-treated samples, signifying complete disinfection. Our results indicate that PA can effectively disinfect extracted human teeth, providing a reliable alternative to formalin and autoclaving.

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Section: Discussionmentioning

confidence: 99%

Peracetic Acid: A Practical Alternative to Formalin for Disinfection of Extracted Human Teeth

et al. 2021

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“…The same solution was used for irrigation of the prepared post space, after which high residual concentrations of oxygen were observed. 35 Oxygen is known to inhibit the complete polymerization of resinous materials 36 that are used in the cementation of the intracanal post. For this reason, push-out tests should be performed to evaluate the effect of PAA used during root canal preparation on the adhesion of intracanal post cemented with resin cement, and if necessary, perform another treatment in the post space before cementation of the post.…”

Section: Discussionmentioning

confidence: 99%

Effect of peracetic acid used as single irrigant on the smear layer, adhesion, and penetrability of AH Plus

et al. 2019

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The aim of this study was to evaluate the effect of peracetic acid (PAA) as a single irrigant on the smear layer, on the intraradicular dentinal bond strength, and on the penetrability of an epoxy-based resin sealer into the dentinal tubules. A total of 120 roots were distributed into 4 groups according to the irrigant used in root canal preparation: 1% PAA (PAA); 2.5% NaOCl followed by final irrigation with 17% EDTA and 2.5% NaOCl (NaOCl-EDTA-NaOCl); 2.5% NaOCl (NaOCl); and saline solution (SS). The smear layer was evaluated using scanning electron microscopy. The bond strength of an epoxy-based resin sealer (AH Plus) to root dentin was evaluated by the push-out test and penetrability of the sealer into dentinal tubules was observed by confocal laser microscopy. The results were analyzed by the Kruskal-Wallis and the Dunn post-test (α = 0.05). The use of 1% PAA as single root canal irrigant provided smear layer removal and improved the penetrability and bond strength of AH Plus to root dentin in a manner similar to that of the NaOCl-EDTA-NaOCl group (p > 0.05). The NaOCl and SS groups had higher values of smear layer and lower values of sealer penetrability and dentin bond strength than the PAA and NaOCl-EDTA-NaOCl groups (p < 0.05). Thus, 1% PAA has the potential to be used as a single irrigant in root canals.

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“…After presence of residues assessment an image with the use of SEM microscope was obtained to evaluate relative quantity of open dentinal tubules in the demarked areas before and after irrigation cleaning protocols at 2000× magnification. The counting of open dentinal tubules was performed through visual counting using photo‐editing software (Adobe Photoshop CS6; Adobe Systems), according to the parameters described by Belizário et al (2018).…”

Section: Methodsmentioning

confidence: 99%

“…Glass‐fiber post retention is associated with cementation technique, which is dependent on the quality of dentin substrate after root dentin has been adequately cleaned for adhesive bonding procedures (Belizário et al, 2018; Jitumori et al, 2019; Parčina Amižić et al, 2019; Peña Bengoa et al, 2020; Pedreira et al, 2016; Pereira et al, 2014; Ramos, Belizário, et al (2018); Ramos, Garcia Belizário, et al (2018); Spicciarelli et al, 2020; Victorino et al, 2016). For an adequate bonding of resin cements to root dentin, a residue‐free dentin surface is essential and the appropriate selection of the cementation system with the correct technique employed could cause substantial results (Bandeca et al, 2016; Morais et al, 2018; Pedreira et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Besides the mechanical action, those irrigating solutions can react negatively with monomers from resin cements compromising the degree of conversion and bonding to root dentin (Ramos, Belizário, et al (2018); Ramos, Garcia Belizário, et al (2018); Seballos et al, 2018). This negative reaction is caused by components, which interact with free radicals in the polymerization chain, for example, sodium hypochlorite (Belizário et al, 2018). Within this process, the sodium hypochlorite is dissociated in sodium hydroxide and hypochlorous acid, thus the formation of singlet oxygen will create a barrier in the adhesive interface jeopardizing the bonding quality and consequently the bond strength (Ramos, Belizário, et al, 2018; Ramos, Garcia Belizário, et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Effect of mechanical cleaning protocols in the fiber post space on the adhesive interface between universal adhesive and root dentin

Núñez

Santos

Zaniboni

et al. 2022

Microscopy Res & Technique

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The aim of this study was to evaluate the effects of cleaning protocols on the presence of residues, open dentinal tubules, and bond strength of a self-etch adhesive plus a dual-cure resin cement to dentin in the fiber-post space. The methods for cleaning utilized were conventional irrigation (CI), rotary brush with continuous rotary movement (RB), and continuous ultrasonic irrigation (CUI). Sixty bovine incisors were used for fiber-post space preparation. Thirty roots were divided into three groups (n = 10) according to the cleaning protocols and submitted to scanning electron microscope to evaluate presence of residues and relative quantity of open dentinal tubules on dentin surface. Similar protocols were performed in the other thirty roots (n = 10) using a self-etching adhesive system (Scotchbond Universal) and a dual-cure resin cement (Relyx Unicem 2). After 6 months cervical, middle, and apical thirds sections of fiber-post space were submitted to push-out testing. To data ANOVA and Tukey's test were employed (α = 5%). RB and CUI showed the lowest presence of residues on dentin surface (p = .015) and the highest bond strength values (p < .001), regardless of the dentin third. CUI presented the highest quantity of open dentinal tubules in middle and apical thirds (p < .001). CI presented the lowest bond strength value of resin cement, regardless of dentin third (p < .001).Mechanical cleaning protocols, such as RB and CUI, presented better surface cleaning capabilities and higher bond strength than CI with dual-cure resin cement employed.The use of a mechanical cleaning protocol seems to cause appropriate condition on the root dentin surface. Mechanical cleaning of root dentin provided greater bond strength of the self-etching system with dual resin cement. Conventional irrigation did not provide adequate root dentin cleaning.

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Effects of different peracetic acid formulations on post space radicular dentin

Cited by 18 publications

References 34 publications

Peracetic Acid: A Practical Alternative to Formalin for Disinfection of Extracted Human Teeth

Peracetic Acid: A Practical Alternative to Formalin for Disinfection of Extracted Human Teeth

Effect of peracetic acid used as single irrigant on the smear layer, adhesion, and penetrability of AH Plus

Effect of mechanical cleaning protocols in the fiber post space on the adhesive interface between universal adhesive and root dentin

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