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Ferreira I, Pina-vaz I. The Novel Role of Solvents in Non-Surgical Endodontic Retreatment. Applied Sciences 2022; 12:5492. [DOI: 10.3390/app12115492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Non-surgical endodontic retreatment is a reliable conservative option for managing post-treatment apical periodontitis. However, effective microbial control, based on the maximization of filling removal and disinfection protocols, is not yet predictable. Traditional gutta-percha solvents, which are indistinctively used for both the core and sealer filling materials, became obsolete due to unprecedented advances in endodontic technology. Nonetheless, microtomography, scanning electronic microscopy findings, and histobacteriological analysis tend to confirm the persistence of filling materials and the lack of association between root canal enlargement and superior disinfection. There is a controversy regarding the most suitable clinical protocols surrounding the shaping procedures and the supplementary disinfection steps. Based on the literature and the previous work of the team, the authors aimed to summarize the current knowledge regarding specific solvent formulations that target filling materials. Additionally, the advantage of an additional irrigation step to optimize disinfection was highlighted. This adjunctive procedure serves a dual role in the dissolution of filling materials, and in conferring an antibiofilm effect. Further research is needed to understand the novel contribution of these strategies upon clinical practice outcomes.
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Aryadi, Willie C. Dissolving efficacy of xylene on epoxy resin-based and bioceramic-based root canal sealers. Sci Dent J 2022. [DOI: 10.4103/sdj.sdj_86_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Ajina MA, Shah PK, Chong BS. Critical analysis of research methods and experimental models to study removal of root filling materials. Int Endod J 2021; 55 Suppl 1:119-152. [PMID: 34674279 DOI: 10.1111/iej.13650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 10/14/2021] [Accepted: 10/18/2021] [Indexed: 12/14/2022]
Abstract
Despite enjoying high favourable outcome rates, root canal treatment is not always successful. Root canal retreatment is a widely practised option for managing a non-healing root treated tooth. A basic distinction between retreatment and initial treatment is the requirement to remove the existing root filling material occupying the root canal space. Only then, can the technical deficiencies and possible causes of failure be addressed. Hence, the successful removal of the root filling material is critical to achieving the objectives of retreatment. Many different materials and techniques have been used for root canal filling, which have been documented in a plethora of studies; these are mainly laboratory studies investigating the removal of root filling materials. To help guide future research, which may then better inform clinical practice in relation to retreatment procedures, the focus of this narrative review is on the research methods and experimental models employed to study the removal of root filling materials. The current available literature demonstrates great variation in the research methodologies used to study the removal of root filling material, including direct visualization by splitting tooth samples or clearing, three-dimensional radiographic imaging including using microcomputed tomography or cone-beam computed tomography, and a combination of these techniques. Depending on the research method employed, variation also exists in quantification of root filling material removal; these include measurements of surface area, volume or weight, and criteria-based (semi-quantitative) assessment. Experimental models, using human teeth or resin models, differ with respect to standardization techniques and replication of the clinical scenario including initial sample preparation, canal filling, allocation and technical aspects of retreatment procedures. Future models should replicate, as closely as possible, the clinical scenario. Currently, microcomputed tomography provides a highly detailed, non-invasive and non-destructive method of objectively assessing and quantifying root filling removal.
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Affiliation(s)
- Mahdi A Ajina
- Institute of Dentistry, Barts & The London School of Medicine & Dentistry, Queen Mary University of London, London, UK
| | - Pratik K Shah
- Institute of Dentistry, Barts & The London School of Medicine & Dentistry, Queen Mary University of London, London, UK
| | - Bun San Chong
- Institute of Dentistry, Barts & The London School of Medicine & Dentistry, Queen Mary University of London, London, UK
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Ferreira I, Rodrigues ME, Fernandes L, Henriques M, Pina-vaz I. Candida albicans Antimicrobial and Antibiofilm Activity of Novel Endodontic Solvents. Applied Sciences 2021; 11:7748. [DOI: 10.3390/app11167748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Background: Candida albicans is the most prevalent fungi isolated in endodontic infections. In this study, the ability of C. albicans biofilm to tolerate the novel solvent mixtures methyl ethyl ketone (MEK)/tetrachloroethylene (TCE) and MEK/orange oil (OOil) sequentially to the standard irrigation of sodium hypochlorite (NaOCl) and ethylenediaminetetraacetic (EDTA) was evaluated. Methods: Biofilm cell cultures of C. albicans SC 5314 were treated sequentially with NaOCl and EDTA and exposed to MEK/TCE or MEK/OOil. The effect of the antimicrobial treatment was evaluated using the disk diffusion method for planktonic culture, and the enumeration of colony-forming units (CFUs) and scanning electron microscope (SEM) for biofilm cell culture. Results: C. albicans mature biofilm (24 h) was significantly reduced in biomass and cell viability after solvent mixtures’ exposure, compared with the previous NaOCl and EDTA treatments. MEK/OOil combination caused a total reduction of biofilm, while with MEK/TCE, there was a 3-log (CFU/cm2) reduction compared with the sequence NaOCl and EDTA, and a 4-log (CFU/cm2) reduction compared with the control. Conclusions: The additional exposure of a preformed 24 h C. albicans biofilm to novel solvent mixtures MEK/TCE and MEK/OOil caused a positive antibiofilm impact, overcoming the performance of the conventional endodontic irrigating protocol.
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Gundogan GI, Durmus S, Ozturk GC, Kucukyesil N, Acar YT, Balaban R, Kig C. A comparative study of the effects of gutta-percha solvents on human osteoblasts and murine fibroblasts. AUST ENDOD J 2021; 47:569-579. [PMID: 34278656 DOI: 10.1111/aej.12541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 03/10/2021] [Accepted: 06/08/2021] [Indexed: 11/29/2022]
Abstract
We aimed to investigate the in vitro physiologic effects of xylene, chloroform, orange oil and eucalyptus oil solvents for dissolving gutta-percha on L929 and HOB cell lines; 2.5 and 10 μL mL-1 of these solvents were tested for 24, 48 and 72 h. Gutta-percha solvents inhibited the proliferation rate of fibroblasts in a dose- and time-dependent manner; however, no inhibition was detected in HOB (evaluated using MTT assay). None of the solvents induced apoptosis/necrosis in HOB cells at ≤2.5 μL mL-1 concentration in contrast to L929 (determined using acridine orange/ethidium bromide dual staining). Each solvent tested reduced the migration rate of both L929 and HOB cell lines in a dose-dependent manner (evaluated using a scratch assay). Gutta-percha solvents can damage fibroblast-rich tissues. Osteoblasts seemed to be more resistant to the tested solvents, and excessive extrusion of solvents from the root canal may also damage the periradicular tissues and reduce the ability to repair.
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Affiliation(s)
- Gul Ipek Gundogan
- Department of Histology and Embryology, Faculty of Medicine, Istanbul Yeni Yuzyil University, Istanbul, Turkey
| | - Sare Durmus
- Department of Endodontics, Faculty of Dentistry, Istanbul Yeni Yuzyil University, Istanbul, Turkey
| | - Gulgun Cansu Ozturk
- Department of Endodontics, Faculty of Dentistry, Istanbul Yeni Yuzyil University, Istanbul, Turkey
| | - Nazmi Kucukyesil
- Department of Endodontics, Faculty of Dentistry, Istanbul Yeni Yuzyil University, Istanbul, Turkey
| | - Yasin Talat Acar
- Department of Molecular Biology and Genetics, Faculty of Science and Letters, Istanbul Yeni Yuzyil University, Istanbul, Turkey
| | - Rumeysa Balaban
- Department of Molecular Biology and Genetics, Faculty of Science and Letters, Istanbul Yeni Yuzyil University, Istanbul, Turkey
| | - Cenk Kig
- Department of Medical Biology and Genetics, Faculty of Medicine, Istanbul Yeni Yuzyil University, Istanbul, Turkey
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Ferreira I, Babo PS, Braga AC, Lopes MA, Gomes ME, Pina-Vaz I. Supplementary solvent irrigation efficacy on filling remnants removal comparing XP-endo Finisher R vs IrriSafe. Sci Rep 2021; 11:12659. [PMID: 34135434 PMCID: PMC8209217 DOI: 10.1038/s41598-021-92175-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/28/2021] [Indexed: 11/22/2022] Open
Abstract
This study aimed to compare the efficacy of XP-endo Finisher R and IrriSafe, with a solvent mixture of Methyl ethyl ketone/Tetrachloroethylene (MEK/TCE), in the removal of root filling residues. Twenty-four human mandibular incisors were pair-matched by micro-computed tomography according to volume and aspect ratio. After retreatment, specimens were allocated to two experimental groups (n = 12), according to the supplementary instrument used. The volume of residual filling material after each irrigating step and the time for retreatment was calculated. Statistical analyses were carried out using Mann-Whitney test, with a significance level of 5%. The volume of initial root canal filling material between the groups was similar (p > 0.05). With the final irrigation protocol (NaOCl and EDTA) the volume of the filling remnants decreased significantly (p < 0.05) with no differences between IrriSafe or XP-endo Finisher R (p > 0.05). The additional solvent mixture MEK/TCE increased the efficiency of filling materials reduction, regardless of the agitating instruments employed, IrriSafe or XP-endo Finisher R (p < 0.05). There was no difference between the two groups regarding the time (p = 0.149). Both supplementary instruments were effective in the reduction of filling remnants. The additional step with a solvent mixture of MEK/TCE enabled a total recovery of patency and the achievement of cleaner canals, independently of the agitation instrument.
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Affiliation(s)
- Inês Ferreira
- CINTESIS, Faculty of Medicine of University of Porto, Al. Prof. Hernâni Monteiro, 4200-319, Porto, Portugal.
| | - Pedro S Babo
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence On Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência E Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal
- ICVS/3B's-PT Government Associate Laboratory, 4805-017, Braga/Guimarães, Portugal
| | - Ana Cristina Braga
- Department of Production and Systems, ALGORITMI Center, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Maria Ascensão Lopes
- REQUIMTE-LAQV, Department of Metallurgical and Materials Engineering, Faculty of Engineering, University of Porto, R. Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Manuela E Gomes
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence On Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência E Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal
- ICVS/3B's-PT Government Associate Laboratory, 4805-017, Braga/Guimarães, Portugal
| | - Irene Pina-Vaz
- CINTESIS, Faculty of Dental Medicine of University of Porto, Rua Dr. Manuel Pereira da Silva, 4200-393, Porto, Portugal
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Ferreira I, Braga AC, Lopes MA, Pina-Vaz I. Adjunctive procedure with solvent mixtures in non-surgical endodontic retreatment: does it affect root dentin hardness? Odontology 2021; 109:812-818. [PMID: 33811311 DOI: 10.1007/s10266-021-00603-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 03/26/2021] [Indexed: 01/02/2023]
Abstract
The aim of this study was to compare the effects of new irrigation solvent mixtures with Methyl ethyl ketone (MEK)/Tetrachloroethylene (TCE) and MEK/Orange oil (OOil), and different agitation techniques on dentin hardness. One hundred forty-four mandibular teeth were prepared and standardized, with each root's middle part transversely sectioned. Initial hardness was measured using a Vickers microhardness tester. Specimens were divided into four groups of agitation techniques (n = 36): no agitation; EndoActivator; IrriSafe; and XP-endo Finisher R. Each group was subdivided into six subgroups of irrigation protocols (n = 6): saline solution; NaOCl + EDTA; NaOCl + EDTA + MEK/TCE; MEK/TCE; NaOCl + EDTA + MEK/OOil; MEK/OOil. Final hardness was measured. The irrigation protocols NaOCl + EDTA, NaOCl + EDTA + MEK/TCE, and NaOCl + EDTA + MEK/OOil significantly decreased dentin hardness, while MEK/OOil increased it (p < 0.05). Comparing to NaOCl + EDTA sequence, dentin hardness increased significantly with the additional exposure to MEK/TCE (3%NaOCl + 17%EDTA + MEK/TCE) or MEK/OOil (3%NaOCl + 17%EDTA + MEK/OOil) (p < 0.05). There were no significant differences regarding agitation effects on dentin hardness decrease. The irrigation protocols affected dentin hardness significantly. However, the additional solvent proposals do not seem to address further concerns on dentin's mechanical properties. Agitation did not show any influence on dentin's hardness reduction.
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Affiliation(s)
- Inês Ferreira
- Faculty of Medicine, CINTESIS, University of Porto, Porto, Portugal. .,Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal.
| | - Ana Cristina Braga
- Department of Production and Systems, ALGORITMI Center, University of Minho, Braga, Portugal
| | - Maria Ascensão Lopes
- Department of Metallurgical and Materials Engineering, Faculty of Engineering, REQUIMTE-LAQV, University of Porto, Porto, Portugal
| | - Irene Pina-Vaz
- Faculty of Dental Medicine, CINTESIS, University of Porto, Porto, Portugal
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Uzunoglu-Özyürek E, Askerbeyli-Örs S, Türker SA. Evaluation of the amount of remained sealer in the dentinal tubules following re-treatment with and without solvent. J Conserv Dent 2021; 23:407-411. [PMID: 33623245 PMCID: PMC7883780 DOI: 10.4103/jcd.jcd_445_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/25/2020] [Accepted: 09/29/2020] [Indexed: 11/09/2022] Open
Abstract
Background: The effect of solvent and sealer type (BioRoot RCS [BRRCS], mineral trioxide aggregate [MTA] Fillapex, and AH26) on the root canal residues was evaluated by confocal laser scanning microscopy (CLSM). Materials and Methods: Distal root canals of 60 mandibular molars prepared up to ProTaper-F4 were filled using one of the sealers labeled with 0.1% rhodamine-B (n = 20 per sealer). Samples were divided into two according to reprocessing methods as follows: ProTaper Universal Reprocessing System (PTUR) or solvent plus PTUR. Samples were sectioned at 2–5 and 8 mm from the apex and the samples were observed under CLSM. Penetration depth, percent penetration depth, and percent penetration into canal walls were evaluated. Statistical analysis was performed using the repeated measures of the two-way ANOVA and Bonferroni post hoc test at P = 0.05. Results: The highest penetration depth was measured in BRRCS in all root canal thirds with or without chloroform addition. Percentage of penetration depth values of MTA Fillapex and BRRCS was statistically similar and higher than AH26 in all sections, except the apical section re-treated with the addition of chloroform. Conclusion: None of the sealers were completely removed. The type of sealant and the use of chloroform changed the amount of sealant remaining in the root canal system.
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Affiliation(s)
- Emel Uzunoglu-Özyürek
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Sevinc Askerbeyli-Örs
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Sevinç Aktemur Türker
- Department of Endodontics, Faculty of Dentistry, Bülent Ecevit University, Zonguldak, Turkey
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Ferreira I, Babo PS, Braga AC, Gomes ME, Pina-Vaz I. Effect of Sonic Agitation of a Binary Mixture of Solvents on Filling Remnants Removal as an Alternative to Apical Enlargement-A Micro-CT Study. J Clin Med 2020; 9:E2465. [PMID: 32752148 PMCID: PMC7464987 DOI: 10.3390/jcm9082465] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND This work aimed to evaluate the efficacy of sonic agitation of a binary mixture of solvents (methyl ethyl ketone/tetrachloroethylene) on filling remnants removal and compare the effects of solvent agitation with the enlargement to the next instrument size. METHODS Twenty-four mandibular incisors were prepared with ProTaper Next (X1, X2) and obturated with the single-cone technique and AH Plus sealer. The teeth were retreated with ProTaper Universal Retreatment and ProTaper Next and divided into two groups (n = 12) according to the final instrument (X3 or X4). All canals were submitted to a supplementary procedure consisting of a mixture of solvents-methyl ethyl ketone/tetrachloroethylene, agitated with EndoActivator. The volume of filling remnants was assessed through micro-computed tomography in the apical 5 mm. Statistical analysis was performed with a significance level of 5%. RESULTS The supplementary procedure of agitation of the solvent mixture was beneficial in both groups (p < 0.05). There were no statistically significant differences between canals re-prepared until X4 and canals re-prepared until X3 plus solvent (p > 0.05). CONCLUSIONS An additional step with a two-solvent solution potentiated by EndoActivator showed to be very effective for the removal of gutta-percha and resinous sealer remnants from apical root canals of mandibular incisors, avoiding further enlargement.
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Affiliation(s)
- Inês Ferreira
- Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
- CINTESIS, Faculty of Dental Medicine, University of Porto, 4200-393 Porto, Portugal
| | - Pedro S. Babo
- 3B’s Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal; (P.S.B.); (M.E.G.)
- ICVS/3B’s – PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - Ana Cristina Braga
- Department of Production and Systems, ALGORITMI Center, University of Minho, Campus de Gualtar 4710-057 Braga, Portugal;
| | - Manuela E. Gomes
- 3B’s Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal; (P.S.B.); (M.E.G.)
- ICVS/3B’s – PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - Irene Pina-Vaz
- CINTESIS, Faculty of Dental Medicine, University of Porto, 4200-393 Porto, Portugal
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Ferreira I, Grenho L, Gomes P, Braga AC, Fernandes MH, Lopes MA, Pina-Vaz I. Efficacy and Cytotoxicity of Binary Mixtures as Root Canal Filling Solvents. Materials (Basel) 2020; 13:E3237. [PMID: 32708117 PMCID: PMC7411907 DOI: 10.3390/ma13143237] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 07/16/2020] [Accepted: 07/17/2020] [Indexed: 11/25/2022]
Abstract
OBJECTIVES This study reports the efficacy of two solvent mixtures on the dissolution of gutta-percha and AH Plus sealer, together with the cytotoxicity. METHODS Methyl ethyl ketone (MEK), orange oil, tetrachloroethylene, MEK/tetrachloroethylene (1:1), MEK/orange oil (1:1), and chloroform (control) were tested. Twelve groups (n = 15) of standardized stainless-steel molds filled with softened gutta-percha cones and twelve (n = 15) filled with AH Plus were immersed in the corresponding mixture or individual solvent, in an ultrasonic bath, for either 2 or 5 min. The effect of the solvents was assessed qualitatively by a topographical analysis (scanning electron microscopy) and chemical analysis (Fourier transform infrared spectroscopy), and quantitatively by a weight loss and viscoelastic property (dynamic mechanical analysis) evaluation. The cytotoxicity was assessed on MG63 human osteoblastic cells. RESULTS The mixtures did not show the formation of new compounds. Both presented significantly higher efficacies compared to their individual solvents, suggesting a synergistic effect. Their dissolution efficacy was similar to that of chloroform, showing high cytocompatibility. CONCLUSIONS The proposed strategy, incorporating ultrasound agitation and profiting from the synergy of adequate solvents, might enhance root canal cleanliness allowing a single-step procedure to dissolve gutta-percha and the sealer remnants, while assuring cytocompatibility with the periapical tissues.
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Affiliation(s)
- Inês Ferreira
- Faculdade de Medicina, Universidade do Porto, 4200-319 Porto, Portugal
- CINTESIS, Faculdade de Medicina Dentária, Universidade do Porto, 4200-393 Porto, Portugal
| | - Liliana Grenho
- Laboratory for Bone Metabolism and Regeneration, Faculdade de Medicina Dentária, Universidade do Porto, 4200-393 Porto, Portugal
- LAQV/REQUIMTE, U.Porto, 4160-007 Porto, Portugal
| | - Pedro Gomes
- Laboratory for Bone Metabolism and Regeneration, Faculdade de Medicina Dentária, Universidade do Porto, 4200-393 Porto, Portugal
- LAQV/REQUIMTE, U.Porto, 4160-007 Porto, Portugal
| | - Ana Cristina Braga
- Departamento de Produção e Sistemas da Escola de Engenharia, Centro ALGORITMI, Universidade do Minho, 4710-057 Braga, Portugal
| | - Maria Helena Fernandes
- Laboratory for Bone Metabolism and Regeneration, Faculdade de Medicina Dentária, Universidade do Porto, 4200-393 Porto, Portugal
- LAQV/REQUIMTE, U.Porto, 4160-007 Porto, Portugal
| | - Maria Ascensão Lopes
- LAQV/REQUIMTE, U.Porto, 4160-007 Porto, Portugal
- Departamento de Engenharia Metalúrgica e de Materiais, Faculdade de Engenharia da Universidade do Porto, 4200-465 Porto, Portugal
| | - Irene Pina-Vaz
- CINTESIS, Faculdade de Medicina Dentária, Universidade do Porto, 4200-393 Porto, Portugal
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Ferreira I, Braga AC, Lopes MA, Pina-Vaz I. Improvement of the efficacy of endodontic solvents by ultrasonic agitation. Saudi Dent J 2019; 33:39-43. [PMID: 33473241 PMCID: PMC7801241 DOI: 10.1016/j.sdentj.2019.11.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 11/12/2019] [Accepted: 11/14/2019] [Indexed: 11/21/2022] Open
Affiliation(s)
- Inês Ferreira
- Faculty of Medicine, University of Porto, Porto, Portugal.,Faculty of Dental Medicine, University of Porto, Porto, Portugal
| | - Ana Cristina Braga
- ALGORITMI Center, Department of Production and Systems, University of Minho, Braga, Portugal
| | - Maria Ascensão Lopes
- REQUIMTE-LAQV, Department of Metallurgical and Materials Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
| | - Irene Pina-Vaz
- Faculty of Dental Medicine, University of Porto, Porto, Portugal
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Vilela Teixeira AB, de Carvalho Honorato Silva C, Alves OL, Cândido dos Reis A. Endodontic Sealers Modified with Silver Vanadate: Antibacterial, Compositional, and Setting Time Evaluation. Biomed Res Int 2019; 2019:4676354. [PMID: 31211137 PMCID: PMC6532301 DOI: 10.1155/2019/4676354] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 04/04/2019] [Accepted: 04/23/2019] [Indexed: 11/18/2022]
Abstract
The incorporation of nanoparticles into endodontic sealers aims at increasing antimicrobial activity of the original material. Aim. The aim of this study is to incorporate the nanostructured silver vanadate decorated with silver nanoparticles (AgVO3, at 2.5%, 5%, and 10%) into three endodontic sealers and evaluate the antibacterial activity of freshly sealers, surface topography and chemical composition, and setting time. Material and Methods. The AgVO3 was incorporated into AH Plus, Sealer 26, and Endomethasone N at concentrations 0%, 2.5%, 5%, and 10% (in mass). The antibacterial activity of freshly sealers was assessed by direct contact with Enterococcus faecalis and CFU/mL count (n=10), surface topography, and chemical composition were measured by SEM/EDS, and the setting time was measured by Gillmore needle (n=10). The Kruskal-Wallis and Dunn statistical tests were applied (α=0.05). Results. All groups of sealers evaluated inhibited E. faecalis (p>0.05). The incorporation of AgVO3 altered the atomic proportions between components of the endodontic sealers, and the percentage of silver (Ag) and vanadium (V) increased proportionally to the concentrations of AgVO3. Topography analysis showed differences in components distribution on the surface of the specimens. The sealers incorporated with AgVO3 of AH Plus presented a lower setting time than the control group (p<0.05). For Sealer 26 and Endomethasone N, the incorporation of AgVO3 increased the setting time in relation to control group (p<0.05). Conclusions. The modification of endodontic sealers by AgVO3 increased the atomic percentage of Ag and V proportionally to the concentration of the nanomaterial and changed the atomic percentage of the sealer components and setting times. It cannot be affirmed that the AgVO3 promote differences in the antimicrobial activity of freshly sealers, and further investigations of the antimicrobial activity of the set sealers should be carried out.
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Affiliation(s)
- Ana Beatriz Vilela Teixeira
- Dental Materials and Prosthesis Department, Ribeirão Preto School of Dentistry, University of São Paulo, 14040-904 Ribeirão Preto, SP, Brazil
| | - Caroline de Carvalho Honorato Silva
- Dental Materials and Prosthesis Department, Ribeirão Preto School of Dentistry, University of São Paulo, 14040-904 Ribeirão Preto, SP, Brazil
| | - Oswaldo Luiz Alves
- Laboratory of Solid State Chemistry, Institute of Chemistry, University of Campinas (Unicamp), 13083-970 Campinas, SP, Brazil
| | - Andréa Cândido dos Reis
- Dental Materials and Prosthesis Department, Ribeirão Preto School of Dentistry, University of São Paulo, 14040-904 Ribeirão Preto, SP, Brazil
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