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Berutti E, Pasqualini D, Scotti N, Mandras N, Roana J, Carpegna G, Palopoli P, Alovisi M. Confocal laser scanning evaluation of the influence of ledges on root canal disinfection. AUST ENDOD J 2024. [PMID: 38946230 DOI: 10.1111/aej.12871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 05/09/2024] [Accepted: 06/20/2024] [Indexed: 07/02/2024]
Abstract
The aim was to analyse the influence of an apical ledge on root canal disinfection. Forty-four single-rooted teeth were micro-CT scanned and inoculated with Enterococcus faecalis. In Group S shaping was performed with ProTaper Next (PTN) up to X3 at working length (WL). In Group L an apical ledge was created with K-Files #40 and shaping completed up to PTN X3. NaOCl 5% and EDTA 10% irrigant solutions were alternated. Confocal laser scanning microscope (CLSM) and viability staining were used to analyse the proportions of dead (red) and live (green) bacteria and penetration ability inside dentinal tubules. Data were analysed with the Mann-Whitney test with Bonferroni correction (p < 0.05). In Group L the amount of red fluorescence resulted significantly lower, and penetration ability was decreased in the apical and middle portion (p < 0.05). The presence of an apical ledge may negatively influence the disinfection both in the apical and middle third.
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Affiliation(s)
- Elio Berutti
- Department of Surgical Science, CIR-Dental School, University of Turin, Turin, Italy
| | - Damiano Pasqualini
- Department of Surgical Science, CIR-Dental School, University of Turin, Turin, Italy
| | - Nicola Scotti
- Department of Surgical Science, CIR-Dental School, University of Turin, Turin, Italy
| | - Narcisa Mandras
- Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Janira Roana
- Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Giorgia Carpegna
- Department of Surgical Science, CIR-Dental School, University of Turin, Turin, Italy
| | - Pietro Palopoli
- Department of Surgical Science, CIR-Dental School, University of Turin, Turin, Italy
| | - Mario Alovisi
- Department of Surgical Science, CIR-Dental School, University of Turin, Turin, Italy
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2
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Fristad I, Haug S, Bårdsen A. Biological properties versus solubility of endodontic sealers and cements. Biomater Investig Dent 2024; 11:40863. [PMID: 38903777 PMCID: PMC11187977 DOI: 10.2340/biid.v11.40863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Accepted: 05/23/2024] [Indexed: 06/22/2024] Open
Abstract
Endodontic sealers and cements used in root canal treatment have different compositions and properties. Common to all materials is that their primary goal is to fill gaps and voids, making a permanent seal of the root canal system. Furthermore, aspects such as antibacterial properties, cytotoxicity, setting time, solubility and biocompatibility are also crucial and ought to be considered. Over the years, a shift in the view on the importance of these aspects has ocurred. Whereas the antibacterial properties were considered important when the technical factors in endodontics were less developed, the sealing ability and biocompatibility have later been considered the most critical factors. The introduction of tricalcium silicate cements and sealers has led to a renewed interest in material properties, as these cements seem to have good sealing ability and at the same time combine favourable antimicrobial effects with excellent biocompatibility. This review discusses how the various properties of root canal sealers and cements may conflict with the primary aim of providing a permanent seal of the root canal system.
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Affiliation(s)
- Inge Fristad
- Department of Clinical Dentistry, University of Bergen, Bergen, Norway
| | - Sivakami Haug
- Department of Clinical Dentistry, University of Bergen, Bergen, Norway
| | - Asgeir Bårdsen
- Department of Clinical Dentistry, University of Bergen, Bergen, Norway
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Seron MA, Nunes GP, Ferrisse TM, Strazzi-Sahyon HB, Dos Santos PH, Gomes-Filho JE, Cintra LTA, Sivieri-Araujo G. Influence of bioceramic sealers on dentinal tubule penetration and antimicrobial effectiveness: a systematic review and meta-analysis of in vitro studies. Odontology 2024:10.1007/s10266-024-00904-6. [PMID: 38374511 DOI: 10.1007/s10266-024-00904-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 01/08/2024] [Indexed: 02/21/2024]
Abstract
The aim of this systematic review and meta-analysis (SRM) was to evaluate whether bioceramic sealers have better penetration capacity in dentinal tubules and antimicrobial activity when compared to AH Plus® sealer. This SRM was recorded in the Open Science Framework database and followed the guidelines of the PRISMA 2020. Five databases were searched by two independent reviewers. Only in vitro studies that evaluated the effects of bioceramic sealers on dentinal tubule penetration and antimicrobial activity outcomes compared to AH Plus® sealer were included. Meta-analysis was conducted using R software, using the effect measure of the standardized mean difference (SMD) and inverse variance method. A modified Joanna Briggs Institute's Checklist was used for the risk of bias assessment. A total of 1486 studies were identified, and only 54 studies that fulfilled our eligibility criteria were included in this review. There was no statistical difference between the sealers evaluated for dentinal tubule penetration, in the thirds evaluated: coronal SMD 0.58 [0.14; 1.31], p = 0.12; middle SMD 0.07 [0.54; 0.39], p = 0.75; and apical SMD 0.08 [0.73; 0.56], p = 0.80. Both sealers demonstrated similar antimicrobial action (SMD [3.42; 5.32], p = 0.67 and SMD 0.67 [1.89; 0.55], p = 0.28). The studies presented a low risk of bias. Based on the in vitro studies included and according to the limitations of the present review, the data suggest that bioceramic and AH Plus® sealers present similar penetration capacity in dentinal tubules and antimicrobial effect, making them suitable materials to be considered in clinical practice.
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Affiliation(s)
- Marcelo Augusto Seron
- Department of Preventive and Restorative Dentistry, Araçatuba School of Dentistry, São Paulo State University - UNESP, Rua José Bonifácio 1193, Araçatuba, SP, 16015-050, Brazil
| | - Gabriel Pereira Nunes
- Department of Preventive and Restorative Dentistry, Araçatuba School of Dentistry, São Paulo State University - UNESP, Rua José Bonifácio 1193, Araçatuba, SP, 16015-050, Brazil.
| | - Tulio Morandin Ferrisse
- Oral Medicine, Department of Diagnosis and Surgery, Araraquara School of Dentistry, São Paulo State University - UNESP, Araraquara, SP, Brazil
| | - Henrico Badaoui Strazzi-Sahyon
- Department of Dental Materials and Prosthodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil
| | - Paulo Henrique Dos Santos
- Department of Dental Materials and Prosthodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil
| | - João Eduardo Gomes-Filho
- Department of Preventive and Restorative Dentistry, Araçatuba School of Dentistry, São Paulo State University - UNESP, Rua José Bonifácio 1193, Araçatuba, SP, 16015-050, Brazil
| | - Luciano Tavares Angelo Cintra
- Department of Preventive and Restorative Dentistry, Araçatuba School of Dentistry, São Paulo State University - UNESP, Rua José Bonifácio 1193, Araçatuba, SP, 16015-050, Brazil
| | - Gustavo Sivieri-Araujo
- Department of Preventive and Restorative Dentistry, Araçatuba School of Dentistry, São Paulo State University - UNESP, Rua José Bonifácio 1193, Araçatuba, SP, 16015-050, Brazil
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Koutroulis A, Valen H, Ørstavik D, Kapralos V, Camilleri J, Sunde PT. Antibacterial Activity of Root Repair Cements in Contact with Dentin-An Ex Vivo Study. J Funct Biomater 2023; 14:511. [PMID: 37888176 PMCID: PMC10607193 DOI: 10.3390/jfb14100511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/18/2023] [Accepted: 10/08/2023] [Indexed: 10/28/2023] Open
Abstract
This study assessed the antibacterial characteristics of the dentin/material interface and dentin surfaces exposed to experimental hydraulic calcium silicate cement (HCSC) with or without bioactive glass (BG) replacement (20% or 40%) or mixed with a silver nanoparticle (SNP) solution (1 or 2 mg/mL), and Biodentine, TotalFill BC RRM putty and Intermediate Restorative Material (IRM). Human root dentin segments with test materials were assessed at 1 or 28 days. In one series, the specimens were split to expose the dentin and material surfaces. A 24 h direct contact test was conducted against three-day established Enterococcus faecalis and Pseudomonas aeruginosa monospecies biofilms. In another series, the dentin/material interface of intact specimens was exposed to biofilm membranes for 3 days and the antibacterial activity was assessed via confocal microscopy. The interface was additionally characterised. All one-day material and dentin surfaces were antibacterial. Dentin surfaces exposed to HCSC with 40% BG-replacement, Biodentine and IRM had decreased antibacterial properties compared to those of the other cements. The HCSC mixed with a 2 mg/mL SNP solution had the highest antimicrobial effect in the confocal assay. The interfacial characteristics of HCSCs were similar. The test materials conferred antibacterial activity onto the adjacent dentin. The BG reduced the antibacterial effect of dentin exposed to HCSC; a 2 mg/mL SNP solution increased the antibacterial potential for longer interaction periods (three-day exposure).
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Affiliation(s)
- Andreas Koutroulis
- Section of Endodontics, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, 0317 Oslo, Norway; (D.Ø.); (V.K.)
| | - Håkon Valen
- Nordic Institute of Dental Materials (NIOM), 0855 Oslo, Norway;
| | - Dag Ørstavik
- Section of Endodontics, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, 0317 Oslo, Norway; (D.Ø.); (V.K.)
| | - Vasileios Kapralos
- Section of Endodontics, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, 0317 Oslo, Norway; (D.Ø.); (V.K.)
| | - Josette Camilleri
- School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK;
| | - Pia Titterud Sunde
- Section of Endodontics, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, 0317 Oslo, Norway; (D.Ø.); (V.K.)
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Lee JY, Shin SJ, Park JW. Influence of Phosphoric Acid Etching on Bond Strength for Calcium Silicate-Based Sealers. J Endod 2023; 49:514-520. [PMID: 36965766 DOI: 10.1016/j.joen.2023.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 02/10/2023] [Accepted: 03/17/2023] [Indexed: 03/27/2023]
Abstract
INTRODUCTION This study evaluated the microtensile bond strength of calcium silicate-based sealers and AH Plus depending on the use of phosphoric acid (PA) etching before immediate resin restoration. METHODS Exposed dentin surfaces of extracted human third molars were randomly assigned to 3 groups depending on sealer type (AH Plus [Dentsply DeTrey], CeraSeal [Meta Biomed Co.], and EndoSeal MTA [Maruchi]). Half of the samples were treated with PA for 30 seconds, and the other half were cleaned with water. Completely untreated specimens were used as controls. Self-etching adhesive (Clearfil SE Bond, Kuraray) was applied, and composite resin (Tetric N-Ceram, Ivoclar Vivadent) was used to create build-ups. After 24 hours, the microtensile bond strength was measured (EZ Test, Shimadzu Co.). The failure mode was determined by light microscopy and scanning electron microscopy. One-way analysis of variance with the Bonferroni correction was used to analyze the data (p<0.05). RESULTS The bond strength of the water-washed dentin surfaces in the calcium silicate-based sealer groups did not differ significantly from those of the control surfaces, but the PA-pretreated surfaces exhibited relatively low bond strength. The AH Plus-treated group had lower bond strength than the control group when no PA treatment was applied, but PA treatment restored the bond strength. The adhesive failure mode was most frequently found in the AH Plus group without PA etching. CONCLUSIONS When a water-soluble calcium silicate-based sealer is used, sufficient bond strength can be obtained by washing with water alone, with no need for PA use.
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Affiliation(s)
- Joo-Yong Lee
- Postgraduate, Department of Conservative Dentistry, Gangnam Severance Hospital, Yonsei University College of Dentistry, 211 Eonjuro, Gangnam-gu, Seoul, Korea,06273
| | - Su-Jung Shin
- Professor, Department of Conservative Dentistry and Oral Science Research Center, Gangnam Severance Hospital, Yonsei University College of Dentistry, 211 Eonjuro, Gangnam-gu, Seoul, Korea,06273
| | - Jeong-Won Park
- Professor, Department of Conservative Dentistry and Oral Science Research Center, Gangnam Severance Hospital, Yonsei University College of Dentistry, 211 Eonjuro, Gangnam-gu, Seoul, Korea,06273.
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6
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Al-Zuhair H, Su Z, Liu H, Wang Z, Haapasalo M, Hieawy A, Gao Y, Shen Y. Antimicrobial effects of agitational irrigation on single- and multispecies biofilms in dentin canals. Odontology 2023; 111:49-56. [PMID: 35713740 DOI: 10.1007/s10266-022-00719-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 05/19/2022] [Indexed: 02/05/2023]
Abstract
This study aimed to compare the antibacterial effects of different agitation devices on single- and multispecies biofilms in dentin canals using confocal laser scanning microscopy (CLSM). Dentin blocks were prepared from human root dentin. Enterococcus faecalis and multiple species were introduced into the dentinal tubules via centrifugation and incubation. Two infected dentin samples were placed at 8 and 16 mm in a customized model. Samples were randomly divided into eight groups according to the agitation device used: syringe needle irrigation, EndoActivator, passive ultrasonic irrigation (PUI), and EDDY, at 2.5% or 6% NaOCl concentrations. The samples were stained and observed using CLSM. Statistical analysis was performed using an independent sample t test and analysis of variance. Linear models were used to assess the joint impact of the experimental groups on the proportion of biofilms killed. No significant differences were observed between the killing rates of the single- and multispecies biofilms. Both concentrations of NaOCl significantly increased the percentage of dead bacteria compared with the control. Biofilms in dentin tubules was more effectively killed when NaOCl was agitated; however, the difference between PUI and EDDY was not significant. Significantly more bacteria were killed in dentin blocks placed at 8 mm than at 16 mm (p < 0.05). In conclusion, EDDY was as effective as PUI when combined with NaOCl. However, the apical portion, which had a low antimicrobial efficiency, remains a concern. Mechanical instrumentation is incapable of completely eradicating bacteria, and additional research is required to improve the efficacy of root canal disinfection.
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Affiliation(s)
- Hind Al-Zuhair
- Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Zheng Su
- Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada.,Department of Endodontics, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - He Liu
- Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada.,Department of Stomatology, Affiliated Hospital of Jining Medical University, Jining, China
| | - Zhejun Wang
- Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Markus Haapasalo
- Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Ahmed Hieawy
- Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Yuan Gao
- Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
| | - Ya Shen
- Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada.
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7
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Jerez-Olate C, Araya N, Alcántara R, Luengo L, Bello-Toledo H, González-Rocha G, Sánchez-Sanhueza G. In vitro antibacterial activity of endodontic bioceramic materials against dual and multispecies aerobic-anaerobic biofilm models. AUST ENDOD J 2022; 48:465-472. [PMID: 34741571 DOI: 10.1111/aej.12587] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/21/2021] [Accepted: 10/24/2021] [Indexed: 12/14/2022]
Abstract
The aim of this in vitro study was to evaluate the antibacterial activity of calcium silicate repair cements and sealers against a dual-species planktonic aerobic model with different aging times and the ability to inhibit the formation of a mature 21-day-old multispecies anaerobic biofilm. The antibacterial activity of ProRoot MTA, MTA Angelus, Biodentine, BioRoot RCS and TotalFill BC sealer against a dual-species aerobic planktonic model, as well as measuring how materials were affected by aging, was evaluated using the Modified Direct Contact Test. Subsequently, the ability to inhibit the formation of a mature multispecies anaerobic biofilm was evaluated using scanning electron microscopy complemented with confocal laser scanning microscopy. Biodentine and BioRoot RCS had higher antibacterial action, and Biodentine was able to maintain its antibacterial action after a prolonged aging period in vitro. Calcium silicate repair cement MTA ProRoot and Biodentine had higher antibiofilm action.
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Affiliation(s)
- Christian Jerez-Olate
- Department of Restorative Dentistry, Discipline of Endodontics, Faculty of Dentistry, Universidad de Concepción, Concepción, Chile
| | - Nancy Araya
- Department of Restorative Dentistry, Discipline of Endodontics, Faculty of Dentistry, Universidad de Concepción, Concepción, Chile
| | - Raúl Alcántara
- Department of Restorative Dentistry, Discipline of Endodontics, Faculty of Dentistry, Universidad de Concepción, Concepción, Chile
| | - Luis Luengo
- Department of Public Health and Preventive Dentistry, School of Dentistry, Universidad de Concepción, Concepción, Chile
| | - Helia Bello-Toledo
- Department of Microbiology, Faculty of Biological Sciences, Universidad de Concepción, Concepción, Chile.,Millennium Nucleus for Collaborative Research on Bacterial Resistance (MICROB-R), Santiago, Chile.,Research Laboratory on Antibacterial Agents, Concepción, Chile
| | - Gerardo González-Rocha
- Department of Microbiology, Faculty of Biological Sciences, Universidad de Concepción, Concepción, Chile.,Millennium Nucleus for Collaborative Research on Bacterial Resistance (MICROB-R), Santiago, Chile.,Research Laboratory on Antibacterial Agents, Concepción, Chile
| | - Gabriela Sánchez-Sanhueza
- Department of Restorative Dentistry, Discipline of Endodontics, Faculty of Dentistry, Universidad de Concepción, Concepción, Chile.,Research Laboratory on Antibacterial Agents, Concepción, Chile
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Chaudhari PS, Chandak MG, Jaiswal AA, Mankar NP, Paul P. A Breakthrough in the Era of Calcium Silicate-Based Cements: A Critical Review. Cureus 2022; 14:e28562. [PMID: 36185838 PMCID: PMC9517689 DOI: 10.7759/cureus.28562] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 08/29/2022] [Indexed: 11/05/2022] Open
Abstract
Calcium silicate-based cements (CSCs) or mineral trioxide aggregate (MTA) lookalike materials are blocks of cement or root canal sealers produced from calcium (Ca) and silicate. They have superior sealing ability, bioactivity, and marginal adaptability, making them appropriate for various dental treatment applications. Mineral trioxide aggregate is widely used in numerous endodontic repair techniques. The capacity of this cement to promote tissue regeneration and stimulate mineralization accounts for its widespread usage in pulp capping, apexification, apical surgeries, and revascularization. Several studies have been conducted to investigate changes in the components of MTA-based types of cement directed to improve their presentation clinically. To improve flowability, new Ca silicate-based formulations have been introduced commercially. In these new formulations, essential features such as adequate radiopacity and setting time, color stability, alkaline pH, and calcium ion release and biocompatibility must be considered. Owing to an increased range of indications of CSCs, including some for restorative dentistry, and with the emergence of novel silicate calcium-based materials with considerable changes in their compositions, it is necessary to examine the available scientific literature that evaluates their usage in these applications. Therefore, this review paper aims to assess the existing knowledge of CSCs, emphasizing their potential uses in restorative and endodontic dentistry. This report strives to update doctors' understanding of CSCs, allowing for a better therapeutic approach.
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9
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Effect of chlorhexidine digluconate on antimicrobial activity, cell viability and physicochemical properties of three endodontic sealers. Dent Mater 2022; 38:1044-1059. [PMID: 35491276 DOI: 10.1016/j.dental.2022.04.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 03/31/2022] [Accepted: 04/01/2022] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Assess the biological and physicochemical properties of AH Plus, BioRoot RCS and Pulp Canal Sealer (PCS) leachates with and without chlorhexidine (CHX). METHODS The sealers were studied in no contact and 1-minute contact with CHX. For biological properties (antibacterial activity and cytotoxicity), leachates were formed in saline of freshly mixed, 1-, 7- and 28 days set sealers. The antibacterial properties of sealer leachates were investigated for planktonic and biofilm growth of E. faecalis, S. mutans, S.epidermidis and S.aureus. The 3-(4,5 dimethylthiazolyl-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay was used to evaluate murine fibroblast cell viability after exposure to the leachates. The physical properties (water uptake, sorption, solubility, porosity, surface characteristics) of sealers and the pH of the immersion liquid (saline or distilled water) were also assessed over a 28-days period. RESULTS CHX improved the antibacterial properties of the sealer leachates and reduced cell viability for all sealer leachates, except for freshly mixed PCS. BioRoot RCS leachates presented the highest antibacterial properties and cell viability with and without CHX contact. PCS was the material most affected by CHX in terms of physical properties, whereas for AH Plus, solubility was increased. CHX did not affect the physical properties of BioRoot RCS, except for solubility that was decreased. CHX contact did not change sealers' alkalinity in distilled water whereas it increased it for AH Plus and BioRoot RCS in saline. SIGNIFICANCE CHX improved the antibacterial efficacy of sealer leachates and either compromised or did not affect cell viability. CHX affected to various extent sealers' physicochemical properties.
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10
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Bek Kurklu ZG, Yoldas HO. The efficacy of different sealer removal protocols on the microtensile bond strength of adhesives to a bioceramic sealer-contaminated dentin. Niger J Clin Pract 2022; 25:336-341. [PMID: 35295057 DOI: 10.4103/njcp.njcp_1575_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background The optimal bonding of adhesives to dentin requires the sealer to be completely removed from the dentinal walls. Aim This study compared the efficacy of different sealer removal protocols on the microtensile bond strengths (MTBS) of single-step adhesives to a calcium silicate-based bioceramic root canal sealer-contaminated dentin. Materials and Methods Standardized box-shaped Class I cavities were prepared in human lower third molars (N = 50). All cavities were contaminated with a bioceramic root canal sealer (Endosequence BC Sealer, Brasseler, Savannah, USA), except the control group (G1) cavities. For the experimental groups, contaminated dentin surfaces were wiped with a dry cotton pellet (G2), wiped with a cotton pellet saturated with water (G3), rinsed with the air/water spray (G4), and passively applied aqueous ultrasonic energy with an ultrasonic scaler (G5) before the restoration procedure. All the cavity surface was restored with a one-bottle universal adhesive and composite resin. All the specimens were subjected to both thermocycling (2,500 thermal cycles from 5 to 55°C, with a 30-s dwelling time and a 10-s transfer time) and mechanical loading (50 N load for 100,000 cycles). The restored specimens were sectioned into resin-dentin beams for MTBS evaluation. Additional specimens were prepared for the scanning electron microscopy (SEM) to examine the dentin-adhesive interface (n = 10). Results No significant difference was found between the mean bond strengths of the groups. In SEM examination, no residual sealer was found in any group. Conclusion Calcium silicate-based bioceramic sealer was removed from the dentin surface with all removal protocols when evaluated with MTBS after the thermal and mechanical cycle tests.
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Affiliation(s)
- Z G Bek Kurklu
- Department of Restorative Dentistry, Faculty of Dentistry, Cukurova University, Adana, Turkey
| | - H O Yoldas
- Department of Endodontics, Faculty of Dentistry, Cukurova University, Adana, Turkey
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11
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Liu H, Li H, Zhang L, Wang Z, Qian J, Yu M, Shen Y. In vitro evaluation of the antibacterial effect of four root canal sealers on dental biofilms. Clin Oral Investig 2022; 26:4361-4368. [PMID: 35137277 DOI: 10.1007/s00784-022-04399-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 02/03/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To dynamically evaluate the effect of four root canal sealers on the killing of biofilms within dentinal tubules. MATERIALS AND METHODS Dentin blocks were prepared for infection of the dentinal tubules. Enterococcus faecalis VP3-181 and multi-species bacteria from two donors were cultured. After 3 days of incubation, the infected dentin specimens were rinsed with sterile water for 1 min and subjected to treatment. Additionally, multi-species bacteria from donor 1 were incubated for 3 weeks to allow biofilm maturation and then the specimens were subjected to treatment. Gutta-percha-treated dentin specimens comprised the control group. A root canal sealer (bioceramic sealers: EndoSequence BC Sealer, ProRoot Endo Sealer, or GuttaFlow Bioseal; and a traditional silicone-based sealer: Guttaflow 2) was spread onto the canal walls of the dentin. The specimens were examined with confocal laser scanning microscopy at 7, 30, or 60 days. RESULTS In the 3-day-old biofilm group, the proportion of killed bacteria decreased significantly from the first 7 days of treatment to 60 days of treatment for all sealers (p < 0.05). In the 3-week-old biofilm group, 60 days of exposure to bioceramic sealers resulted in more significant dead bacteria than 7-day exposures of the biofilms (p < 0.05). Bioceramic sealers were more effective in killing bacteria than the GuttaFlow 2 sealer (p < 0.05). CONCLUSIONS Calcium silicate-based sealers showed good antimicrobial effects against biofilms within dentinal tubules, especially in the first week in young biofilms. There is no substantive antibacterial activity observed for the examined root canal sealers against young dentinal tubule biofilms. CLINICAL RELEVANCE The bioceramic root canal sealers examined demonstrate minimal additional antibacterial effects after long-term exposure to young biofilms.
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Affiliation(s)
- He Liu
- Department of Stomatology, Affiliated Hospital of Jining Medical University, Jining, People's Republic of China.,Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, V6T 1Z3, Canada
| | - Heng Li
- Department of Stomatology, Affiliated Hospital of Jining Medical University, Jining, People's Republic of China
| | - Lei Zhang
- Department of Stomatology, Affiliated Hospital of Jining Medical University, Jining, People's Republic of China
| | - Zhejun Wang
- Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, V6T 1Z3, Canada
| | - Junrong Qian
- Department of Stomatology, Affiliated Hospital of Jining Medical University, Jining, People's Republic of China
| | - Miao Yu
- Department of Periodontics, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510182, People's Republic of China.
| | - Ya Shen
- Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, V6T 1Z3, Canada.
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12
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Kapralos V, Valen H, Koutroulis A, Camilleri J, Ørstavik D, Sunde PT. The dentine-sealer interface: modulation of antimicrobial effects by irrigation. Int Endod J 2022; 55:544-560. [PMID: 35080277 DOI: 10.1111/iej.13692] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 01/19/2022] [Accepted: 01/20/2022] [Indexed: 11/29/2022]
Abstract
AIM Assess whether sodium hypochlorite (NaOCl) or chlorhexidine (CHX) and two irrigation protocols may alter the antibacterial properties of dentine and three endodontic sealers using a novel ex vivo tooth model. METHODOLOGY Prior to antibacterial testing, the tooth model was validated by means of scanning electron microscopy (SEM) to evaluate the separation between dentine and sealer surfaces. Root blocks prepared from extracted human roots were pretreated with 17% EDTA + 0.9% saline and subsequently treated with 1% NaOCl (G1), 2% CHX (G2) or no irrigant (G3). Two irrigation protocols were further investigated, "1% NaOCl + 17% EDTA" (P1) and "1% NaOCl + 17% EDTA + 2% CHX" (P2). Following irrigation, the root blocks were either filled with AH Plus, BioRoot RCS and Pulp Canal Sealer (PCS), or left empty. All groups were incubated for 1, 7 and 28 days. Direct contact tests for planktonic E. faecalis and 48 hours E. faecalis biofilms were performed at the level of dentine and sealer surfaces. Statistical analysis was performed on the bacterial survival between irrigants (G1, G2 and G3) and between irrigation protocols (P1 and P2) (p<0.05). RESULTS The model was considered reproducible as SEM examination of dentine samples indicated consistent separation between dentine and sealer surfaces. Irrigation with CHX (G2) and irrigation protocol (P2) enhanced the antibacterial properties of dentine without sealer application as well as dentine in contact with all three sealers tested, especially against planktonic E. faecalis. G2 and P2 also improved the antibacterial effect of AH Plus surfaces for all three incubation times. No irrigation groups (G1, G2) or irrigation protocols (P1, P2) altered the antibacterial properties of BioRoot RCS surfaces against planktonic bacteria or biofilms. Only BioRoot RCS surfaces eliminated the planktonic E. faecalis in all irrigation groups (G1, G2, G3) and protocols (P1, P2) investigated while PCS surfaces eliminated E. faecalis in biofilms in all groups up to 7 days. CONCLUSIONS The tooth model was reproducible. CHX improved the antibacterial activity upon both sealer and dentine surfaces. Among sealers, BioRoot RCS was less affected by NaOCl and CHX, and exhibited high antibacterial properties regardless the irrigation applied.
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Affiliation(s)
- V Kapralos
- Section of Endodontics, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Box 1109 Blindern, 0317, Oslo, Norway
| | - H Valen
- Nordic Institute of Dental Materials (NIOM), Sognsveien 70 A, 0855, Oslo, Norway
| | - A Koutroulis
- Section of Endodontics, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Box 1109 Blindern, 0317, Oslo, Norway
| | - J Camilleri
- School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - D Ørstavik
- Section of Endodontics, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Box 1109 Blindern, 0317, Oslo, Norway
| | - P T Sunde
- Section of Endodontics, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Box 1109 Blindern, 0317, Oslo, Norway
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Wang Z, Shen Y, Haapasalo M. Antimicrobial and Antibiofilm Properties of Bioceramic Materials in Endodontics. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7594. [PMID: 34947188 PMCID: PMC8706218 DOI: 10.3390/ma14247594] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 11/30/2021] [Accepted: 12/07/2021] [Indexed: 12/19/2022]
Abstract
Microbes are prevalent in the root canals of necrotic teeth, and they are the cause of primary and post-treatment apical periodontitis. Bacteria can dwell within the infected root canal system as surface-adherent biofilm structures, which exhibit high resistance to antimicrobial agents. Bioceramic materials, with their biocompatible nature and excellent physico-chemical properties, have been widely used in dental applications, including endodontics. This review focuses on the application of bioceramic technology in endodontic disinfection and the antibiofilm effects of endodontic bioceramic materials. Different bioceramic materials have shown different levels of antibiofilm effects. New supplements have emerged to potentially enhance the antibiofilm properties of bioceramics aiming to achieve the goal of microbial elimination in the root canal system.
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Affiliation(s)
| | | | - Markus Haapasalo
- Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada; (Z.W.); (Y.S.)
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14
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Leelapornpisid W, Novak-Frazer L, Qualtrough A, Rautemaa-Richardson R. Effectiveness of D,L-2-hydroxyisocaproic acid (HICA) and alpha-mangostin against endodontopathogenic microorganisms in a multispecies bacterial-fungal biofilm in an ex vivo tooth model. Int Endod J 2021; 54:2243-2255. [PMID: 34473354 DOI: 10.1111/iej.13623] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 11/29/2022]
Abstract
AIM To develop a defined multispecies root canal biofilm model ex vivo, and to perform viable compositional analysis following D,L-2-hydroxyisocaproic acid (HICA), alpha-mangostin, Calcicur® , and Odontopaste® exposure. METHODOLOGY Time-kill assays were conducted in vitro using HICA, alpha-mangostin, Calcicur® , Odontopaste® , and saline solution on the planktonic cultures of C. albicans, E. faecalis, L. rhamnosus, and S. gordonii. Human root dentine blocks were prepared (n = 100) ex vivo, and multispecies suspensions containing each of 1.5 × 108 CFU/mL C. albicans, E. faecalis, L. rhamnosus, and S. gordonii in brain heart infusion (BHI) were incubated within the root canals for 21 days. Canals (n = 20/group) were then exposed to medicaments for 7 days. Samples taken from the inner (first 0.1 mm) and deeper (second 0.1 mm) dentine by drilling with Ash Steel Burs No. 5 and No. 6, and residual roots were cultured in broth for 24 h. Cell growth was detected by spectrophotometry and confirmed by culture on agar. The other set of inner dentine, deeper dentine, and residual root samples were sonicated, and then exposed with 50 μM PMA before DNA was extracted using the QIAamp DNA mini kit. Real-time quantitative PCR was performed to determine the biofilm composition as well as the number of live and total cells remaining in the biofilm following each treatment. The OD data were analysed with Kruskal-Wallis and Friedman with Wilcoxon signed-rank test between and within groups, respectively, agar culture and qPCR data with Pearson chi-square with Mann-Whitney and Cochran with McNemar tests, respectively (p < .0001). RESULTS Time-kill assays revealed that HICA and Calcicur® killed all planktonic organisms within 24 h, whilst alpha-mangostin killed the organisms within 72 h. However, Odontopaste® was a slow-killing agent: 10 cells of planktonic organisms survived after exposure to the agent for 7 days. The ex vivo tooth model demonstrated that HICA and alpha-mangostin significantly inhibited the cell growth in all sampling depths (p < .0001). All species-specific data revealed the effectiveness of each medicament on the biofilm composition. CONCLUSIONS D,L-2-hydroxyisocaproic acid and alpha-mangostin had antimicrobial activity against multispecies bacterial-fungal biofilms.
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Affiliation(s)
- Warat Leelapornpisid
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Lilyann Novak-Frazer
- Mycology Reference Centre Manchester and Department of Infectious Diseases, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK.,Division of Evolution, Infection and Genomics, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | | | - Riina Rautemaa-Richardson
- Mycology Reference Centre Manchester and Department of Infectious Diseases, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK.,Division of Evolution, Infection and Genomics, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
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Kok ESK, Lim XJ, Chew SX, Ong SF, See LY, Lim SH, Wong LA, Davamani F, Nagendrababu V, Fawzy A, Daood U. Quaternary ammonium silane (k21) based intracanal medicament triggers biofilm destruction. BMC Oral Health 2021; 21:116. [PMID: 33711992 PMCID: PMC7953794 DOI: 10.1186/s12903-021-01470-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 03/01/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Compare antimicrobial efficacy of a quarternary ammonium silane (QAS)/k21 as an intracanal medicament against E. faecalis and C. albicans biofilms formed on root dentin. METHODOLOGY Dentin blocks were sterilized and E. faecalis and C. albicans microbial colonies were counted for colony-forming-units against 2%k21, 2%CHX and Ca(OH)2 medicaments. Biofilm colonies after 7 days on dentin were analysed using confocal laser scanning microscopy with live/dead bacterial viability staining. TEM was done to study dentin collagen matrix. Dentin discs from 3rd day and 7th day well plate was used for Raman spectra and observed under fluorescent-microscope. Docking studies were carried out on MMP-2 S1 binding-domain with k21. RESULTS There was reduction of E. faecalis/C. albicans when k21, chlorhexidine and calcium hydroxide were used with highest percentage in 2%k21 treated specimens. 2%k21 showed dense and regular collagen network with intact cross-banding and decreased Raman intensity for 2%k21 on 3rd day. NaOCl + k21 showed least adherence, whereas saline groups showed highest adherence of E. faecalis and C. albicans to root-canal dentin. Alizarin red staining of hDPSCs revealed calcium deposition in all groups with significant difference seen amongst 2%k21 groups. MMP-2 ligand binding was seen accurately indicating possible target sites for k21 intervention. CONCLUSION 2%k21 can be considered as alternative intracanal medicament.
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Affiliation(s)
- Esther Sook Kuan Kok
- Division of Clinical Dentistry, Schoolof Dentistry, International Medical University Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Xian Jin Lim
- Division of Clinical Dentistry, Schoolof Dentistry, International Medical University Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Soo Xiong Chew
- Division of Clinical Dentistry, Schoolof Dentistry, International Medical University Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Shu Fen Ong
- Division of Clinical Dentistry, Schoolof Dentistry, International Medical University Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Lok Yin See
- Division of Clinical Dentistry, Schoolof Dentistry, International Medical University Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Siao Hua Lim
- Division of Clinical Dentistry, Schoolof Dentistry, International Medical University Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Ling Ang Wong
- Division of Clinical Dentistry, Schoolof Dentistry, International Medical University Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Fabian Davamani
- Faculty of Biomedical Science, School of Health Sciences, International Medical University, Kuala Lumpur, Malaysia
| | - Venkateshbabu Nagendrababu
- Division of Clinical Dentistry, Schoolof Dentistry, International Medical University Kuala Lumpur, Kuala Lumpur, Malaysia
- Department of Preventive and Restorative Dentistry, College of Dental Medicine, University of Sharjah, Sharjah, UAE
| | - Amr Fawzy
- UWA Dental School, University of Western Australia, Nedlands, Australia
| | - Umer Daood
- Division of Clinical Dentistry, Schoolof Dentistry, International Medical University Kuala Lumpur, Kuala Lumpur, Malaysia.
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Kapralos V, Rukke HV, Ørstavik D, Koutroulis A, Camilleri J, Sunde PT. Antimicrobial and physicochemical characterization of endodontic sealers after exposure to chlorhexidine digluconate. Dent Mater 2020; 37:249-263. [PMID: 33293036 DOI: 10.1016/j.dental.2020.11.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 10/20/2020] [Accepted: 11/18/2020] [Indexed: 01/12/2023]
Abstract
OBJECTIVES Assess the antibacterial, physical and chemical properties of AH Plus, BioRoot RCS and Pulp Canal Sealer (PCS) in contact with 2% chlorhexidine digluconate (CHX) used as final irrigant prior to root canal obturation. METHODS The antimicrobial properties were investigated by direct contact tests for planktonic and biofilm growth of E. faecalis, S. mutans, S.epidermidis and S.aureus in vitro. The setting time, wettability, microhardness and surface roughness were also assessed. The sealers were studied in no contact, 1-minute (short-term) and continuous contact (long-term) with CHX. Chemical characterization of sealers was performed by scanning electron microscopy, X-ray diffraction analysis and Fourier-transform infrared spectroscopy after CHX or saline used as the last irrigant in an ex vivo tooth model and in endo training blocks. RESULTS CHX increased the antibacterial activity of all the sealers investigated against planktonic bacteria and biofilms with PCS exerting the highest antimicrobial activity with and without the presence of CHX. The setting of AH Plus and BioRoot RCS was retarded, while for PCS accelerated in the presence of CHX. AH Plus and PCS were more hydrophilic after contact with CHX, whilst BioRoot RCS was hydrophobic in a time-dependent manner. The microhardness of sealers was compromised and the surface roughness increased after CHX exposure for AH Plus and BioRoot RCS, and decreased for PCS. CHX did not affect the sealers' chemistry, but PCS that exhibited two extra phases. SIGNIFICANCE CHX improved the antibacterial efficacy of endodontic sealers but further evidence is needed to confirm its suitability as a final irrigant prior to root canal obturation.
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Affiliation(s)
- Vasileios Kapralos
- Section of Endodontics, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Geitmyrsveien 71, 0455, Oslo, Norway.
| | - Håkon Valen Rukke
- Nordic Institute of Dental Materials (NIOM), Sognsveien 70 A, 0855 Oslo, Norway.
| | - Dag Ørstavik
- Section of Endodontics, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Geitmyrsveien 71, 0455, Oslo, Norway.
| | - Andreas Koutroulis
- Section of Endodontics, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Geitmyrsveien 71, 0455, Oslo, Norway.
| | - Josette Camilleri
- School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom.
| | - Pia Titterud Sunde
- Section of Endodontics, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Geitmyrsveien 71, 0455, Oslo, Norway.
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17
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Šimundić Munitić M, Budimir A, Jakovljević S, Anić I, Bago I. Short-Term Antibacterial Efficacy of Three Bioceramic Root Canal Sealers Against Enterococcus Faecalis Biofilms. Acta Stomatol Croat 2020; 54:3-9. [PMID: 32523152 PMCID: PMC7233124 DOI: 10.15644/asc54/1/1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Objectives The aim of the study was to evaluate the antimicrobial efficacy of three bioceramic root canal sealers against Enterococcus faecalis (E. faecalis) biofilm. Material and methods E. faecalis bacterial suspension was grown on filter paper discs on agar plates. After the incubation period, the discs were covered with four different root canal sealers: 1) Premixing bioceramic root canal sealer (TotalFill BC Sealer); 2) Dual component bioceramic sealer (BioRoot RCS); 3) Mineral trioxide agreggate based sealer (MTA Fillapex); 4) Epoxy resin-based selar (AH Plus). After contact time of 60 minutes, the sealers were removed, and the discs were transferred into sterile tubes containing phosphate buffered saline. After serial dilutions, the aliquots of the suspension were cultivated for 24 hours. After the incubation period, the colony forming units (CFUs) were counted. Results There were no significant differences in antibacterial efficacy between the Total Fill BC Sealer and the AH Plus sealer (p=0.386). Both sealers showed better antibacterial efficacy compared to the BioRoot RCS and the MTA Fillapex (p<0.001). Conclusion The Total Fill BC Sealer and AH Plus had better antibacterial efficacy than the BioRoot RCS and the MTA Fillapex sealers.
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Affiliation(s)
| | - Ana Budimir
- Department of Clinical and Molecular Microbiology, Clinical Hospital Centre Zagreb, Croatia
| | - Suzana Jakovljević
- Department of Materials, Faculty of Engineering and Naval Architecture, University of Zagreb, Croatia
| | - Ivica Anić
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, Croatia
| | - Ivona Bago
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, Croatia
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18
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Šimundić Munitić M, Poklepović Peričić T, Utrobičić A, Bago I, Puljak L. Antimicrobial efficacy of commercially available endodontic bioceramic root canal sealers: A systematic review. PLoS One 2019; 14:e0223575. [PMID: 31622387 PMCID: PMC6797114 DOI: 10.1371/journal.pone.0223575] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 09/24/2019] [Indexed: 11/25/2022] Open
Abstract
Background Recently, a new generation of bioceramic root canal sealers has been introduced onto the market. Many in vitro studies have investigated the antimicrobial properties of these sealers, but their comparative efficacy in antimicrobial activity is still unknown. Methodology Three electronic databases were searched: MEDLINE and Embase via the OvidSP platform, and Web of Science, up to June 25, 2019. Studies were included irrespective of study design, type of publication and language. Reporting quality was assessed by two authors independently. Meta-analysis was not performed due to studies being highly heterogeneous. Results We included 37 studies that analysed the antimicrobial effects of bioceramic sealers. Most of them used a planktonic cell model, with the exception of nine studies which used biofilms. It was not possible to make direct comparison of results from studies and to give a clear conclusion about the comparative antimicrobial activity of these materials because the studies used heterogeneous sources and ages of microorganisms, setting and contact times of sealers, and antimicrobial tests. Furthermore, some materials showed completely different results when tested with different methods. Conclusions In conclusion, multiple in vitro studies have shown that bioceramic sealers may have various degrees of antimicrobial activity. However, it is still impossible to make conclusions about their comparative efficacy and to recommend the use of one over another in clinical practice because the studies available were conducted in different ways, which makes meta-analysis futile. A uniform methodological approach, consistent definitions and studies on humans are urgently needed in this field of research so that recommendations for practice can be made.
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Affiliation(s)
- Marija Šimundić Munitić
- Department of Endodontics and Restorative Dentistry, Dental Polyclinic Split; School of Dental Medicine, University of Split, Split, Croatia
- * E-mail:
| | - Tina Poklepović Peričić
- Department of Research in Biomedicine and Health, School of Medicine, University of Split, Split, Croatia
| | - Ana Utrobičić
- Cochrane Croatia, Central Medical Library, School of Medicine, University of Split, Split, Croatia
| | - Ivona Bago
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, Zagreb, Croatia
| | - Livia Puljak
- Department of Evidence Based Medicine and Health Care, Catholic University of Croatia, Zagreb, Zagreb, Croatia
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Duarte MAH, Marciano MA, Vivan RR, Tanomaru Filho M, Tanomaru JMG, Camilleri J. Tricalcium silicate-based cements: properties and modifications. Braz Oral Res 2018; 32:e70. [PMID: 30365611 DOI: 10.1590/1807-3107bor-2018.vol32.0070] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 06/12/2018] [Indexed: 12/23/2022] Open
Abstract
Mineral trioxide aggregate (MTA) has been widely used for different reparative procedures in endodontics. The extensive use of this cement for pulp capping, apexifications, apical surgeries, and revascularization is related to its ability to induce tissue repair and to stimulate mineralization. Several research studies have tested modifications in the composition of MTA-based cements in order to enhance their clinical performance. Novel formulations have been introduced in the market with the aim of increasing flowability. Important properties such as appropriate radiopacity and setting time, color stability, alkaline pH, release of calcium ions, and biocompatibility have to be considered in these new formulations. The latest research studies on the physical, chemical, and biological properties of tricalcium silicate-based cements are discussed in this critical review.
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Affiliation(s)
- Marco Antonio Hungaro Duarte
- Universidade de São Paulo - USP, Dental School of Bauru, Department of Dentistry, Endodontics, and Dental Materials, Bauru, SP, Brazil
| | - Marina Angélica Marciano
- Universidade Estadual de Campinas - Unicamp, Dental School of Piracicaba, Department of Dentistry, Endodontics, and Dental Materials, Piracicaba, SP, Brazil
| | - Rodrigo Ricci Vivan
- Universidade de São Paulo - USP, Dental School of Bauru, Department of Dentistry, Endodontics, and Dental Materials, Bauru, SP, Brazil
| | - Mario Tanomaru Filho
- Universidade do Estado de São Paulo - Unesp, Dental School of Araraquara, Department of Restorative Dentistry, Araraquara, SP, Brazil
| | - Juliane Maria Guerreiro Tanomaru
- Universidade do Estado de São Paulo - Unesp, Dental School of Araraquara, Department of Restorative Dentistry, Araraquara, SP, Brazil
| | - Josette Camilleri
- University of Birmingham, School of Dentistry, Birmingham, United Kingdom
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20
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Almeida LHS, Moraes RR, Morgental RD, Cava SS, Rosa WLO, Rodrigues P, Ribeiro AS, Só M, Pappen FG. Synthesis of silver-containing calcium aluminate particles and their effects on a MTA-based endodontic sealer. Dent Mater 2018; 34:e214-e223. [DOI: 10.1016/j.dental.2018.05.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 03/29/2018] [Accepted: 05/09/2018] [Indexed: 10/16/2022]
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Magana M, Sereti C, Ioannidis A, Mitchell CA, Ball AR, Magiorkinis E, Chatzipanagiotou S, Hamblin MR, Hadjifrangiskou M, Tegos GP. Options and Limitations in Clinical Investigation of Bacterial Biofilms. Clin Microbiol Rev 2018; 31:e00084-16. [PMID: 29618576 PMCID: PMC6056845 DOI: 10.1128/cmr.00084-16] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Bacteria can form single- and multispecies biofilms exhibiting diverse features based upon the microbial composition of their community and microenvironment. The study of bacterial biofilm development has received great interest in the past 20 years and is motivated by the elegant complexity characteristic of these multicellular communities and their role in infectious diseases. Biofilms can thrive on virtually any surface and can be beneficial or detrimental based upon the community's interplay and the surface. Advances in the understanding of structural and functional variations and the roles that biofilms play in disease and host-pathogen interactions have been addressed through comprehensive literature searches. In this review article, a synopsis of the methodological landscape of biofilm analysis is provided, including an evaluation of the current trends in methodological research. We deem this worthwhile because a keyword-oriented bibliographical search reveals that less than 5% of the biofilm literature is devoted to methodology. In this report, we (i) summarize current methodologies for biofilm characterization, monitoring, and quantification; (ii) discuss advances in the discovery of effective imaging and sensing tools and modalities; (iii) provide an overview of tailored animal models that assess features of biofilm infections; and (iv) make recommendations defining the most appropriate methodological tools for clinical settings.
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Affiliation(s)
- Maria Magana
- Department of Clinical Microbiology, Athens Medical School, Aeginition Hospital, Athens, Greece
| | - Christina Sereti
- Department of Clinical Microbiology, Athens Medical School, Aeginition Hospital, Athens, Greece
- Department of Microbiology, Thriassio General Hospital, Attiki, Greece
| | - Anastasios Ioannidis
- Department of Clinical Microbiology, Athens Medical School, Aeginition Hospital, Athens, Greece
- Department of Nursing, Faculty of Human Movement and Quality of Life Sciences, University of Peloponnese, Sparta, Greece
| | - Courtney A Mitchell
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee, USA
| | - Anthony R Ball
- Gliese 623b, Mendon, Massachusetts, USA
- GAMA Therapeutics LLC, Pepperell, Massachusetts, USA
| | - Emmanouil Magiorkinis
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School, University of Athens, Athens-Goudi, Greece
| | | | - Michael R Hamblin
- Harvard-MIT Division of Health Science and Technology, Cambridge, Massachusetts, USA
- Department of Dermatology, Harvard Medical School, Boston, Massachusetts, USA
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Maria Hadjifrangiskou
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - George P Tegos
- Gliese 623b, Mendon, Massachusetts, USA
- GAMA Therapeutics LLC, Pepperell, Massachusetts, USA
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Xavier F, Nevares G, Gominho L, Rodrigues R, Cassimiro M, Romeiro K, Albuquerque D. Bacterial Reduction after Gutta-Percha Removal with Single vs. Multiple Instrument Systems. IRANIAN ENDODONTIC JOURNAL 2018; 13:176-180. [PMID: 29707011 PMCID: PMC5911290 DOI: 10.22037/iej.v13i2.17505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Introduction: The aim of this study was to evaluate the effectiveness of a reciprocating single-instrument system (Reciproc-REC) compared with combined continuously rotating multiple-instrument systems [D-Race (DR) and BioRace (BR)] in reducing Enterococcus faecalis (E.f.) after gutta-percha removal. Methods and Materials: Forty-six extracted human maxillary incisors were prepared and contaminated with E.f. strain (ATCC 29212) for 30 days. The samples were obturated and randomly divided into two experimental groups for gutta-percha removal (n=23): a REC group (R50) and a DR/BR group (DR1, DR2 and BR6). A standardized irrigation with 0.9% saline solution was performed. Root canal samples were taken with paper points before (S1) and after (S2) the removal of gutta-percha to establish bacterial quantification by culture. The time required for gutta-percha removal was also recorded. Positive and negative control groups (n=6) were used to test bacterial viability and control asepsis, respectively. Data were analysed using t-Student and one-way ANOVA tests (5% margin of error). Results: The mean percentage of bacterial reduction was significantly higher in DR/BR group (84.2%) than in REC group (72.3%) (P<0.05). The mean time for obturation removal was 74.00 sec in REC group and 107.53 sec in DR/BR group (P<0.05). Conclusion: The combined continuously rotating multiple-instrument system was more effective in reducing bacteria after the removal of gutta-percha than the single-instrument system. None of the tested systems was able to completely eliminate root canal infection after gutta-percha removal. Thus, additional techniques should be considered.
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Affiliation(s)
- Felipe Xavier
- Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco, Pernambuco, Brazil
| | - Giselle Nevares
- Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco, Pernambuco, Brazil
| | - Luciana Gominho
- Department of Endodontics, Federal University of Campina Grande, Campina Grande, Brazil
| | - Renata Rodrigues
- Molecular Microbiology Laboratory, Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcely Cassimiro
- Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco, Pernambuco, Brazil
| | - Kaline Romeiro
- Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco, Pernambuco, Brazil
| | - Diana Albuquerque
- Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco, Pernambuco, Brazil
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Wang Y, Liu S, Dong Y. In vitro study of dentinal tubule penetration and filling quality of bioceramic sealer. PLoS One 2018; 13:e0192248. [PMID: 29390037 PMCID: PMC5794174 DOI: 10.1371/journal.pone.0192248] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 01/18/2018] [Indexed: 11/19/2022] Open
Abstract
This study aimed to evaluate the dentinal tubule penetration and filling quality of a bioceramic sealer (iRoot SP). Forty-two roots of extracted adult lower incisors were selected. After instrumentation with Protaper Universal to F3, 40 roots were chosen and randomly divided into 4 groups, as follows: iRoot SP single cone group, iRoot SP warm vertical group, AH Plus single cone group, and AH Plus warm vertical group. Before root canal filling, sealers were mixed with Rhodamine B dye for visualization under confocal laser scanning microscope. All samples were sectioned at 2, 4, and 6 mm to apex. Then, the percentages of void areas, gap regions, and segments of sealer that penetrated into dentinal tubules in each section were calculated. Non-parametric test was used for statistical analysis (α = 0.05). We found that filling techniques and types of sealer had no statistically significant effects on the occurrence of voids and gaps. The segments of iRoot SP penetrated into dentinal tubules were statistically more than that of AH Plus in both single cone and warm vertical techniques at 2 mm to apex (P < 0.05). Regardless of the filling technique used, iRoot SP can achieve comparable filling quality and better dentinal tubules penetration than AH Plus. Considering the good bioactivity of iRoot SP, it may help improve the seal of root canal system.
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Affiliation(s)
- Yahui Wang
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing, P.R.China
| | - Siyi Liu
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing, P.R.China
| | - Yanmei Dong
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing, P.R.China
- * E-mail:
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24
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Giardino L, Del Fabbro M, Cesario F, Fernandes FS, Andrade FB. Antimicrobial effectiveness of combinations of oxidant and chelating agents in infected dentine: an ex vivo
confocal laser scanning microscopy study. Int Endod J 2017; 51:448-456. [DOI: 10.1111/iej.12863] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 09/23/2017] [Indexed: 12/01/2022]
Affiliation(s)
- L. Giardino
- School of Dentistry; University of Catanzaro Magna Graecia; Catanzaro Italy
| | - M. Del Fabbro
- Department of Biomedical; Surgical and Dental Sciences; Università degli Studi di Milano; Milan Italy
- IRCCS Galeazzi Orthopedic Institute; Milan Italy
| | - F. Cesario
- Department of Operative Dentistry, Endodontics and Dental Materials; Bauru School of Dentistry; University of São Paulo; Bauru SP Brazil
| | - F. S. Fernandes
- Department of Operative Dentistry, Endodontics and Dental Materials; Bauru School of Dentistry; University of São Paulo; Bauru SP Brazil
| | - F. B. Andrade
- Department of Operative Dentistry, Endodontics and Dental Materials; Bauru School of Dentistry; University of São Paulo; Bauru SP Brazil
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Silva-Neto RD, Sousa-Neto MD, Pécora JD, Palma-Dibb RG, Souza-Gabriel AE. Wear profile of canal wall surfaces and bond strength of endodontic sealers after in situ acid challenge. Int Endod J 2017; 51:364-374. [PMID: 28887850 DOI: 10.1111/iej.12858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 09/03/2017] [Indexed: 11/26/2022]
Abstract
AIM To evaluate the wear of root wall surfaces, the bond strength of sealers to dentine and the demineralization around root filling materials after canals were exposed to acid challenge in situ. METHODOLOGY Eighty-seven roots of mandibular incisors were selected. Thirty-two were used in the laboratory bond strength study (n = 8), and 55 in the in situ study (n = 11). Root canals were prepared biomechanically and then filled with gutta-percha and AH Plus, MTA Fillapex, Sealapex or Endofill. For 14 days, 11 participants used intra-oral devices with five sterilized roots (four experimental and one control - only canal prepared). Drops of sucrose were dripped onto roots allowing the accumulation of biofilm on canal surfaces. Roots were removed, sectioned and analysed for the following: bond strength of filling material using a push-out test and also wear profile and dentine demineralization using confocal microscopy. Bond strength (MPa) was evaluated by two-way anova and Tukey test (α = 0.05), and wear profile was assessed by Kruskal-Wallis and t-tests (α = 0.05). RESULTS AH Plus had the highest bond strength values. Intermediate results were found in roots with MTA Fillapex and Endofill, whilst Sealapex had inferior results (P < 0.05). No significant differences were found amongst root thirds (P > 0.05). For wear profile, samples were associated with degradation of the filling materials after exposure to the oral environment (P < 0.05). Roots had signs of demineralization around the filling material when Sealapex and Endofill were used. CONCLUSIONS Sealers were not able to prevent degradation of the adhesive interface and dentine. AH Plus and MTA Fillapex had superior bond strength to dentine and less intense demineralization around the root filling.
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Affiliation(s)
- R D Silva-Neto
- Department of Restorative Dentistry, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - M D Sousa-Neto
- Department of Restorative Dentistry, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - J D Pécora
- Department of Restorative Dentistry, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - R G Palma-Dibb
- Department of Restorative Dentistry, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - A E Souza-Gabriel
- Department of Restorative Dentistry, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
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Oloketuyi SF, Khan F. Inhibition strategies of Listeria monocytogenes biofilms-current knowledge and future outlooks. J Basic Microbiol 2017; 57:728-743. [PMID: 28594071 DOI: 10.1002/jobm.201700071] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 05/12/2017] [Accepted: 05/12/2017] [Indexed: 12/30/2022]
Abstract
There is an increasing trend in the food industry on the Listeria monocytogenes biofilm formation and inhibition. This is attributed to its easy survival on contact surfaces, resistance to disinfectants or antibiotics and growth under the stringent condition used for food processing and preservation thereby leading to food contamination products by direct or indirect exposure. Though, there is a lack of conclusive evidences about the mechanism of biofilm formation, in this review, the concept of biofilm formation and various chemical, physical, and green technology approaches to prevent or control the biofilm formed is discussed. State-of-the-art approaches ranging from the application of natural to synthetic molecules with high effectiveness and non-toxicity targeted at the different steps of biofilm formation could positively influence the biofilm inhibition in the future.
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Affiliation(s)
- Sandra F Oloketuyi
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, U.P., India
| | - Fazlurrahman Khan
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, U.P., India
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27
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Cheng X, Qu T, Ma C, Xiang D, Yu Q, Liu X. Bioactive mono-dispersed nanospheres with long-term antibacterial effects for endodontic sealing. J Mater Chem B 2017; 5:1195-1204. [PMID: 28944058 PMCID: PMC5606337 DOI: 10.1039/c6tb02819e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Endodontic sealers with antibacterial capability play an important role in preventing reinfection of an endodontically treated root canal and improving the long-term success of root canal treatment. However, current endodontic sealers rapidly lose their antibacterial properties after fixation. In this work, we designed and synthesized quaternized mono-dispersed bioactive nanospheres as a potential substrate for the development of a long-term antibacterial endodontic sealer with excellent cytocompatibility and biocompatibility. First, mono-dispersed silica-based bioactive glass nanospheres (SBG-NS) were prepared via a modified sol-gel process. Next, a series of quaternary ammonium methacrylate salts (QAMs) with broad antibacterial spectra were synthesized and grafted onto the surfaces of the SBG-NS via a two-step coupling approach. The antibacterial effect of the quaternary ammonium polymethacrylate (QAPM)-containing SBG-NS (SBG-QAPM) against persistent microorganisms associated with infected root canals was evaluated using a direct contact test. Evaluations of the SBG-QAPM cytocompatibility and biocompatibility were performed using LIVE/DEAD staining, 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyl-2, 5-tetrazoliumbromide (MTT) assay, and a calvarial implantation model. The results showed that the SBG-QAPMs had the strongest long-term antibacterial effect against the Enterococcus faecalis, Streptococcus mutans, and Streptococcus sanguis during the study period, the best cytocompatibility, and the lowest systemic inflammation compared to three commercial products: ProRoot MTA, Endomethasone C, and AH Plus. In addition, the SBG-QAPMs showed excellent stability in aqueous solution. This work indicates that the SBG-QAPMs are promising substrates for the development of long-term antibacterial endodontic sealers.
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Affiliation(s)
- Xiaogang Cheng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, School of Stomatology, The Fourth Military Medical University, 710032, Shaanxi, China
- Biomedical Sciences Department, Texas A&M University College of Dentistry, Dallas, TX, 75246, USA
| | - Tiejun Qu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, School of Stomatology, The Fourth Military Medical University, 710032, Shaanxi, China
| | - Chi Ma
- Biomedical Sciences Department, Texas A&M University College of Dentistry, Dallas, TX, 75246, USA
| | - Doudou Xiang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, School of Stomatology, The Fourth Military Medical University, 710032, Shaanxi, China
| | - Qing Yu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, School of Stomatology, The Fourth Military Medical University, 710032, Shaanxi, China
| | - Xiaohua Liu
- Biomedical Sciences Department, Texas A&M University College of Dentistry, Dallas, TX, 75246, USA
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Oltra E, Cox TC, LaCourse MR, Johnson JD, Paranjpe A. Retreatability of two endodontic sealers, EndoSequence BC Sealer and AH Plus: a micro-computed tomographic comparison. Restor Dent Endod 2016; 42:19-26. [PMID: 28194360 PMCID: PMC5299751 DOI: 10.5395/rde.2017.42.1.19] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 10/13/2016] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVES Recently, bioceramic sealers like EndoSequence BC Sealer (BC Sealer) have been introduced and are being used in endodontic practice. However, this sealer has limited research related to its retreatability. Hence, the aim of this study was to evaluate the retreatability of two sealers, BC Sealer as compared with AH Plus using micro-computed tomographic (micro-CT) analysis. MATERIALS AND METHODS Fifty-six extracted human maxillary incisors were instrumented and randomly divided into 4 groups of 14 teeth: 1A, gutta-percha, AH Plus retreated with chloroform; 1B, gutta-percha, AH Plus retreated without chloroform; 2A, gutta-percha, EndoSequence BC Sealer retreated with chloroform; 2B, gutta-percha, EndoSequence BC Sealer retreated without chloroform. Micro-CT scans were taken before and after obturation and retreatment and analyzed for the volume of residual material. The specimens were longitudinally sectioned and digitized images were taken with the dental operating microscope. Data was analyzed using an ANOVA and a post-hoc Tukey test. Fisher exact tests were performed to analyze the ability to regain patency. RESULTS There was significantly less residual root canal filling material in the AH Plus groups retreated with chloroform as compared to the others. The BC Sealer samples retreated with chloroform had better results than those retreated without chloroform. Furthermore, patency could be re-established in only 14% of teeth in the BC Sealer without chloroform group. CONCLUSION The results of this study demonstrate that the BC Sealer group had significantly more residual filling material than the AH Plus group regardless of whether or not both sealers were retreated with chloroform.
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Affiliation(s)
- Enrique Oltra
- Department of Endodontics, University of Washington, Seattle, WA, USA
| | - Timothy C Cox
- Department of Pediatrics (Craniofacial Medicine), University of Washington, Seattle, WA, USA.; Center for Developmental Biology and Regenerative Medicine, Seattle Children's Research Institute, Seattle, WA, USA.; Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Matthew R LaCourse
- Center for Developmental Biology and Regenerative Medicine, Seattle Children's Research Institute, Seattle, WA, USA
| | - James D Johnson
- Department of Endodontics, University of Washington, Seattle, WA, USA
| | - Avina Paranjpe
- Department of Endodontics, University of Washington, Seattle, WA, USA
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Fan W, Li Y, Sun Q, Ma T, Fan B. Calcium-silicate mesoporous nanoparticles loaded with chlorhexidine for both anti- Enterococcus faecalis and mineralization properties. J Nanobiotechnology 2016; 14:72. [PMID: 27769275 PMCID: PMC5073856 DOI: 10.1186/s12951-016-0224-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Accepted: 10/12/2016] [Indexed: 11/21/2022] Open
Abstract
Background In infected periapical tissues, Enterococcus faecalis is one of the most common dominant bacteria. Chlorhexidine has been proved to show strong antibacterial ability against E. faecalis but is ineffective in promoting mineralization for tissues around root apex. Mesoporous calcium-silicate nanoparticles are newly synthesized biomaterials with excellent ability to promote mineralization and carry-release bioactive molecules in a controlled manner. In this study, mesoporous calcium-silicate nanoparticles were functionalized with chlorhexidine and their releasing profile, antibacterial ability, effect on cell proliferation and in vitro mineralization property were evaluated. Results The chlorhexidine was successfully incorporated into mesoporous calcium-silicate nanoparticles by a mixing-coupling method. The new material could release chlorhexidine as well as Ca2+ and SiO32− in a sustained manner with an alkaline pH value under different conditions. The antimicrobial ability against planktonic E. faecalis was dramatically improved after chlorhexidine incorporation. The nanoparticles with chlorhexidine showed no negative effect on cell proliferation with low concentrations. On dentin slices, the new synthesized material demonstrated a similar inhibitory effect on E. faecalis as the chlorhexidine. After being immersed in SBF for 9 days, numerous apatite crystals could be observed on surfaces of the material tablets. Conclusions Mesoporous calcium-silicate nanoparticles loaded with chlorhexidine exhibited release of ions and chlorhexidine, low cytotoxicity, excellent antibacterial ability and in vitro mineralization. This material could be developed into a new effective intra-canal medication in dentistry or a new bone defect filling material for infected bone defects.
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Affiliation(s)
- Wei Fan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, People's Republic of China
| | - Yanyun Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, People's Republic of China
| | - Qing Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, People's Republic of China
| | - Tengjiao Ma
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, People's Republic of China
| | - Bing Fan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, People's Republic of China.
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Latham J, Fong H, Jewett A, Johnson JD, Paranjpe A. Disinfection Efficacy of Current Regenerative Endodontic Protocols in Simulated Necrotic Immature Permanent Teeth. J Endod 2016; 42:1218-25. [DOI: 10.1016/j.joen.2016.05.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 05/10/2016] [Accepted: 05/10/2016] [Indexed: 10/21/2022]
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Yang Y, Shen Y, Wang Z, Huang X, Maezono H, Ma J, Cao Y, Haapasalo M. Evaluation of the Susceptibility of Multispecies Biofilms in Dentinal Tubules to Disinfecting Solutions. J Endod 2016; 42:1246-50. [PMID: 27318625 DOI: 10.1016/j.joen.2016.05.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 04/29/2016] [Accepted: 05/16/2016] [Indexed: 11/28/2022]
Abstract
INTRODUCTION The present study evaluated the effect of the source of biofilm bacteria on their susceptibility in dentinal tubules to disinfecting solutions using an infected dentin model. METHODS Infected dentin blocks were prepared. Enterococcus faecalis strains VP3-181 and Gel 31 were introduced into dentinal tubules by centrifugation to form monospecies biofilms, whereas 3 specimens of pooled plaque bacteria collected from different donors were used to grow multispecies biofilms in dentin. After 1 and 3 weeks of incubation, the samples were subjected to sterile water, 2% chlorhexidine (CHX), and 2% sodium hypochlorite (NaOCl). After the 3-minute exposure, the proportions of killed bacteria in dentin canals were assessed by viability staining and confocal laser scanning microscopy. RESULTS The proportion of killed bacteria in mature (3 weeks) mono- and multispecies biofilms was lower than in young biofilms (1 week) after treatment (P < .05). E. faecalis Gel 31 biofilms and multispecies biofilms were more resistant than VP3-181 biofilms. No differences in the susceptibilities to the disinfecting agents of the 3 multispecies biofilms were detected; 2% NaOCl was more effective against multispecies biofilms in dentin than 2% CHX (P < .05), whereas no significant difference was detected between 2% CHX and 2% NaOCl against the E. faecalis strains. CONCLUSIONS Mature mono- and multispecies biofilms in dentinal tubules are more resistant to disinfectants than corresponding young biofilms. The susceptibility of the monospecies E. faecalis dentin biofilm showed strain-related differences, whereas the multispecies biofilms from different donors showed similar susceptibility.
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Affiliation(s)
- Yan Yang
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Faculty of Dentistry, Division of Endodontics, Department of Oral Biological and Medical Sciences, University of British Columbia, British Columbia, Canada
| | - Ya Shen
- Faculty of Dentistry, Division of Endodontics, Department of Oral Biological and Medical Sciences, University of British Columbia, British Columbia, Canada
| | - Zhejun Wang
- Faculty of Dentistry, Division of Endodontics, Department of Oral Biological and Medical Sciences, University of British Columbia, British Columbia, Canada
| | - Xiangya Huang
- Department of Conservative Dentistry and Endodontics, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Hazuki Maezono
- Department of Restorative Dentistry and Endodontology, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Jingzhi Ma
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yingguang Cao
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Markus Haapasalo
- Faculty of Dentistry, Division of Endodontics, Department of Oral Biological and Medical Sciences, University of British Columbia, British Columbia, Canada.
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Kist S, Kollmuss M, Jung J, Schubert S, Hickel R, Huth KC. Comparison of ozone gas and sodium hypochlorite/chlorhexidine two-visit disinfection protocols in treating apical periodontitis: a randomized controlled clinical trial. Clin Oral Investig 2016; 21:995-1005. [PMID: 27173580 DOI: 10.1007/s00784-016-1849-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 05/04/2016] [Indexed: 11/24/2022]
Abstract
OBJECTIVES In this single-blinded, prospective, randomized, controlled clinical trial, the effectiveness of an ozone gas or NaOCl/CHX disinfection protocol was compared within the root canal treatment of apical periodontitis. MATERIALS AND METHODS Sixty permanent teeth were randomly allocated to one technique. The clinical/radiographic assessment criteria included clinical symptoms, periapical index (PAI), and size of the apical lesion. In both groups, the root canal was mechanically cleaned and irrigated with NaCl and EDTA. Ozone gas (32 g m-3) or NaOCl (3 %) was applied followed by a 1-week inter-appointment dressing (Ca(OH)2). As final disinfection, ozone gas (ozone group) or CHX 2 % (NaOCl group) was applied. Microbial samples were taken after preparing the access cavity, after chemo-mechanical treatment and after inter-appointment dressing by sterile paper points. Microbial identification was performed by mass spectroscopy (MALDI-TOF-MS) and 16S-rRNA gene sequencing. The treated teeth were blindly re-evaluated after 6/12 months. Success rates, the decrease in PAI, the size of apical lesions and bacterial reduction were compared between groups (Fischer's exact test, Mann-Whitney U test). RESULTS There were no significant differences between the success rates (ozone group: 96.2/95.5 % after 6/12 months; NaOCl group: 95.5/95.2 % after 6/12 months). The differences in the decreases in PAI values and apical lesion sizes were also insignificant after 6 and 12 months. The bacterial reduction showed no significant differences between groups after chemo-mechanical treatment and after inter-appointment dressing. The most commonly found bacterial genera were Streptococcus spp., Parvimonas spp. and Prevotella spp. CONCLUSIONS The here used ozone gas and NaOCl/CHX protocols showed no difference in bacterial reduction in the sampled areas of the root canals. CLINICAL RELEVANCE Within the limitations of the study, ozone gas seems to be a possible alternative disinfection agent within the root canal treatment of apical periodontitis.
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Affiliation(s)
- Stefan Kist
- Department of Restorative Dentistry, Periodontology & Paedodontics, Ludwig Maximilians University, Goethestrasse 70, 80336, Munich, Germany
| | - Maximilian Kollmuss
- Department of Restorative Dentistry, Periodontology & Paedodontics, Ludwig Maximilians University, Goethestrasse 70, 80336, Munich, Germany
| | - Jette Jung
- Max-von-Pettenkofer Institute for Hygiene and Clinical Microbiology, Ludwig Maximilians University, Munich, Germany
| | - Sören Schubert
- Max-von-Pettenkofer Institute for Hygiene and Clinical Microbiology, Ludwig Maximilians University, Munich, Germany
| | - Reinhard Hickel
- Department of Restorative Dentistry, Periodontology & Paedodontics, Ludwig Maximilians University, Goethestrasse 70, 80336, Munich, Germany
| | - Karin Christine Huth
- Department of Restorative Dentistry, Periodontology & Paedodontics, Ludwig Maximilians University, Goethestrasse 70, 80336, Munich, Germany.
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Sakko M, Tjäderhane L, Sorsa T, Hietala P, Rautemaa R. 2-Hydroxyisocaproic acid is bactericidal in human dental root canalsex vivo. Int Endod J 2016; 50:455-463. [DOI: 10.1111/iej.12639] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Accepted: 03/17/2016] [Indexed: 12/15/2022]
Affiliation(s)
- M. Sakko
- Institute of Dentistry; University of Oulu; Oulu Finland
- Department of Bacteriology and Immunology; Haartman Institute; Helsinki University Hospital; University of Helsinki; Helsinki Finland
- Medical Research Center Oulu; Oulu University Hospital; University of Oulu; Oulu Finland
- Department of Oral and Maxillofacial Diseases; Helsinki University Hospital; University of Helsinki; Helsinki Finland
| | - L. Tjäderhane
- Institute of Dentistry; University of Oulu; Oulu Finland
- Medical Research Center Oulu; Oulu University Hospital; University of Oulu; Oulu Finland
- Department of Oral and Maxillofacial Diseases; Helsinki University Hospital; University of Helsinki; Helsinki Finland
| | - T. Sorsa
- Department of Oral and Maxillofacial Diseases; Helsinki University Hospital; University of Helsinki; Helsinki Finland
- Division of Periodontology; Department of Dental Medicine; Karolinska Institute; Huddinge Sweden
| | | | - R. Rautemaa
- Manchester Academic Health Science Centre; Institute of Inflammation and Repair; The University of Manchester; Manchester UK
- University Hospital of South Manchester; Manchester UK
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