Physicochemical Properties and Interfacial Adaptation of Root Canal Sealers

Cañadas, Piedad S.; Berástegui, Ester; Hernández, Patrícia Gatón; Silva, Léa Assed Bezerra; Leite, Giselle A.S.; Silva, Roberto S

doi:10.1590/0103-6440201300037

Cited by 33 publications

(39 citation statements)

References 23 publications

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“…Other studies showed no direct correlation between smear layer removal and root canal sealer penetration, as there was no significant difference between apical, middle and coronal portions of the tested specimens [36,37]. In our study, such differences may be due to the improved physico-chemical properties and flowability of the chosen root canal sealer [38].…”

Section: Discussioncontrasting

confidence: 53%

In Vitro Evaluation of Antibacterial Properties and Smear Layer Removal/Sealer Penetration of a Novel Silver-Citrate Root Canal Irrigant

et al. 2020

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This study aimed at evaluating the efficacy of a novel silver-citrate root canal irrigation solution (BioAKT) on smear layer removal, sealer penetration after root canal instrumentation and antibacterial activity. Single-root teeth were endodontically treated, sealed with an epoxi-amine resin sealer and irrigated using: Group I: 5.25% sodium hypochlorite (NaOCl); Group II: silver-citrate solution (BioAKT); Group III: phosphate buffer solution (PBS); Group IV: 17% ethylenediaminetetraacetic acid (EDTA). Smear layer removal and silver deposition at the coronal, middle and apical portion of each canal were analyzed using scanning electron microscopy (SEM) and energy-dispersive x-ray spectroscopy (EDS). Sealer penetration into dentinal tubules at coronal, middle and apical portion was assessed through dye-assisted confocal microscopy (CSM). Both SEM and CSM micrographs were evaluated by two examiners (κ = 0.86), who were blind to the irrigation regimens; scores were given according to the degree of penetration of the sealer. Data analysis included Pearson’s x2 and Sidak’s multiple comparisons. Dentin discs were polished and sterilized. Enterococcus faecalis biofilms were grown using a continuous-flow bioreactor under anaerobic conditions for 72 h. Specimens were irrigated with the tested solutions, and bacterial viability was assessed using a tetrazolium salt assay (MTT). Statistical analysis included one-way ANOVA and Student’s post-hoc t-test (p < 0.05). BioAKT and EDTA were the most efficient solutions both in removing the smear layer and allowing sealer penetration. However, at the apical portion BioAKT performed significantly better compared to EDTA both in smear layer removal and sealer penetration (p < 0.05). BioAKT and NaOCl showed comparable antibacterial effect (p = 0.53). In conclusion, BioAKT represents a suitable smear layer removal agent, which allows for reliable sealer penetration at the apical portion of the root canal system and offers significant antibacterial properties.

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Section: Discussioncontrasting

confidence: 53%

In Vitro Evaluation of Antibacterial Properties and Smear Layer Removal/Sealer Penetration of a Novel Silver-Citrate Root Canal Irrigant

et al. 2020

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“…The small solubility of AH Plus sealer would contribute for the antibacterial action and local repair [4,5].…”

Section: Discussionmentioning

confidence: 99%

“…[5] evaluated the physicochemical properties, radiopacity, pH, and solubility of Endo CPM Sealer, Activ GP, and Sealapex, compared with those of AH Plus sealers. Concerning to the solubility, all materials meeting the requirements of ANSI/ADA, that is, solubility lower than 3% of the weight, without statistically significant differences among the sealers.…”

Section: Solubilitymentioning

confidence: 99%

AH Plus extrusion into periapical tissue: literature review of main related properties and report of clinical cases

Hubbe

Oliveira

Coelho

et al. 2017

RSBO

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Introduction: The sealers were developed for filling of root canals. Due to their physicochemical and technical properties used for obturation, often, extrusion is observed through apical constriction and occasionally by lateral and secondary canals. Objective: To review the literature on important properties to be considered in AH Plus sealer extrusion and report a case series of this sealer extrusion. Literature review: Articles evaluating the cytotoxicity and biocompatibility properties, besides flow and solubility were selected. Case report: In the presented cases, endodontic treatment was performed with rotary instrumentation and irrigation with 2.5% NaOCl. Obturation employed visual, tactile, and radiographic proof of gutta-percha main cone, and different obturation techniques. There were no reports of pain during and after endodontic treatment. Conclusion: AH Plus has adequate properties for a filling material and causes no major damage to the periapical tissues due to its little cytotoxic.

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“…AH Plus has demonstrated low solubility and good dimensional stability in solutions. It can adhere to root dentin due to its creep properties and long setting times [13,19,20]. Regarding the antimicrobial properties, epoxy-resin based sealers have shown to produce some antibacterial properties but mainly before their setting due to the release of some of the constituents like formaldehyde [21,22].…”

mentioning

confidence: 99%

Novel Bioactive and Therapeutic Root Canal Sealers with Antibacterial and Remineralization Properties

et al. 2020

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According to the American Dental Association Survey of Dental Services Rendered (published in 2007), 15 million root canal treatment procedures are performed annually. Endodontic therapy relies mainly on biomechanical preparation, chemical irrigation and intracanal medicaments which play an important role in eliminating bacteria in the root canal. Furthermore, adequate obturation is essential to confine any residual bacteria within the root canal and deprive them of nutrients. However, numerous studies have shown that complete elimination of bacteria is not achieved due to the complex anatomy of the root canal system. There are several conventional antibiotic materials available in the market for endodontic use. However, the majority of these antibiotics and antiseptics provide short-term antibacterial effects, and they impose a risk of developing antibacterial resistance. The root canal is a dynamic environment, and antibacterial and antibiofilm materials with long-term effects and nonspecific mechanisms of action are highly desirable in such environments. In addition, the application of acidic solutions to the root canal wall can alter the dentin structure, resulting in a weaker and more brittle dentin. Root canal sealers with bioactive properties come in direct contact with the dentin wall and can play a positive role in bacterial elimination and strengthening of the root structure. The new generation of nanostructured, bioactive, antibacterial and remineralizing additives into polymeric resin-based root canal sealers are discussed in this review. The effects of these novel bioactive additives on the physical and sealing properties, as well as their biocompatibility, are all important factors that are presented in this article.

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Physicochemical Properties and Interfacial Adaptation of Root Canal Sealers

Cited by 33 publications

References 23 publications

In Vitro Evaluation of Antibacterial Properties and Smear Layer Removal/Sealer Penetration of a Novel Silver-Citrate Root Canal Irrigant

In Vitro Evaluation of Antibacterial Properties and Smear Layer Removal/Sealer Penetration of a Novel Silver-Citrate Root Canal Irrigant

AH Plus extrusion into periapical tissue: literature review of main related properties and report of clinical cases

Novel Bioactive and Therapeutic Root Canal Sealers with Antibacterial and Remineralization Properties

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