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Velázquez-Moreno S, Zavala-Alonso NV, Oliva Rodríguez R, Quintana M, Ojeda-Galván HJ, Gonzalez-Ortega O, Martinez-Gutierrez F. Multispecies oral biofilm and identification of components as treatment target. Arch Oral Biol 2023; 156:105821. [PMID: 37857227 DOI: 10.1016/j.archoralbio.2023.105821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/04/2023] [Accepted: 10/07/2023] [Indexed: 10/21/2023]
Abstract
Endodontic infections involve a multispecies biofilm, making it difficult to choose an antimicrobial treatment. Characteristics such as the pathogens involved and number of microorganisms, nutrients, material surface to develop the biofilm, flow and oxygenation conditions are important for biofilm development using in vitro models. OBJECTIVE To develop a standardized biofilm model, which replicates the main features (chemical, microbiological, and topographical) of an infected root canal tooth to detect components as treatment target. DESIGN Clinical strains of Enterococcus faecalis, Candida albicans, and Actinomyces israelii were isolated, and a multispecies biofilm was developed using continuous laminar flow reactors under anaerobic conditions in human dental roots. The microbiological composition was determined by counting colony-forming units and scanning electron microscope micrographs. In addition, the chemical composition of the exopolymeric matrix was determined by vibrational Raman spectroscopy and liquid chromatography of biofilm supernatant treated with enzyme. RESULTS E. faecalis turned out to be the main microorganism in mature biofilm, this was related to the presence of β-galactosidase detected by vibrational Raman spectroscopy. After the enzymatic treatment of the extracellular polymeric substance, the presence of mannose and glucose was established. CONCLUSIONS The present work contributes to better understanding of standard conditions to develop a multispecies biofilm in human dental roots, which could have an impact on the generation of new root canal disinfection techniques in endodontic pathologies.
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Affiliation(s)
- Selene Velázquez-Moreno
- Facultad de Ciencias Químicas, Universidad Autonoma de San Luis Potosi, Av. Dr. Manuel Nava No. 6, Zona Universitaria, CP 78210 San Luis Potosi, SLP, Mexico
| | - Norma V Zavala-Alonso
- Especialidad en Ortodoncia, Facultad de Estomatologia, Universidad Autonoma de San Luis Potosi, Av. Dr. Manuel Nava No. 2, Zona Universitaria, CP 78290 San Luis Potosi, SLP, Mexico
| | - Ricardo Oliva Rodríguez
- Maestria en Ciencias Odontologicas, Facultad de Estomatologia, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava No. 2, Zona Universitaria, CP 78290 San Luis Potosi, SLP, Mexico
| | - Mildred Quintana
- Facultad de Ciencias, Universidad Autonoma de San Luis Potosi, Av. Parque Chapultepec 1570, CP 78210 San Luis Potosi, SLP, Mexico; Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autonoma de San Luis Potosi, Sierra Leona No. 550, Lomas CP 28210, San Luis Potosi, SLP, Mexico
| | - Hiram Joazet Ojeda-Galván
- Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autonoma de San Luis Potosi, Sierra Leona No. 550, Lomas CP 28210, San Luis Potosi, SLP, Mexico
| | - Omar Gonzalez-Ortega
- Facultad de Ciencias Químicas, Universidad Autonoma de San Luis Potosi, Av. Dr. Manuel Nava No. 6, Zona Universitaria, CP 78210 San Luis Potosi, SLP, Mexico; Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autonoma de San Luis Potosi, Sierra Leona No. 550, Lomas CP 28210, San Luis Potosi, SLP, Mexico
| | - Fidel Martinez-Gutierrez
- Facultad de Ciencias Químicas, Universidad Autonoma de San Luis Potosi, Av. Dr. Manuel Nava No. 6, Zona Universitaria, CP 78210 San Luis Potosi, SLP, Mexico; Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autonoma de San Luis Potosi, Sierra Leona No. 550, Lomas CP 28210, San Luis Potosi, SLP, Mexico.
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Singh TV, Sattiraju PS, Kamishetty S, Reddy S, Bhattacharjee P, Habeeb A. Effect of a novel quaternary ammonium silane based cavity cleanser FiteBac 2% K21 QAS in comparison with other cavity disinfectants on the bond strength of resin-modified glass ionomer cement. JOURNAL OF CONSERVATIVE DENTISTRY AND ENDODONTICS 2023; 26:688-692. [PMID: 38292749 PMCID: PMC10823988 DOI: 10.4103/jcde.jcde_145_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/22/2023] [Accepted: 09/23/2023] [Indexed: 02/01/2024]
Abstract
Background The application of cavity cleansers for cavity disinfection can be a crucial step in the longevity of restorations. The objective of the present study was to compare the effect of the application of a new quaternary ammonium silane (QAS)-based cavity cleanser (2% K21 QAS), with other commercially available cavity disinfectants on the bond strength of resin-modified glass ionomer cement (RMGIC). Materials and Methods The buccal surfaces of 40 extracted premolars were trimmed to obtain a flat dentinal surface and were randomly divided into four experimental groups depending on the cavity cleansers used before restoration. Group 1: 2% chlorhexidine (CHX), Group 2: QAS (FiteBac 2% K21 QAS), Group 3: silver diamine fluoride-potassium iodide (Riva Star, SDF-KI), and Group 4: 3% hydrogen peroxide (H2O2). Then, a predetermined dimension of RMGIC restoration was bonded to the treated dentin surfaces. Following this, each sample was tested for shear bond strength (SBS) using a universal testing machine at a crosshead speed of 0.5 mm/min. Results Among the experimental groups, SDF-KI has shown the highest mean SBS, followed by 2% K21 QAS, and 2% CHX, which have shown almost comparable results. The 3% H2O2 group has shown the lowest values. Conclusion According to the results of the present study, 2% K21 QAS has the potential to be used as an effective cavity cleanser before the placement of RMGIC restorations. Since its application does not affect the bond strength of restoration, it can be successfully used as an alternative to CHX and SDF-KI.
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Affiliation(s)
- Thakur Veerandar Singh
- Department of Conservative Dentistry and Endodontics, Sri Sai College of Dental Surgery, Vikarabad, Telangana, India
| | - Priyanka Sai Sattiraju
- Department of Conservative Dentistry and Endodontics, Sri Sai College of Dental Surgery, Vikarabad, Telangana, India
| | - Shekar Kamishetty
- Department of Conservative Dentistry and Endodontics, Sri Sai College of Dental Surgery, Vikarabad, Telangana, India
| | - Smitha Reddy
- Department of Conservative Dentistry and Endodontics, Sri Sai College of Dental Surgery, Vikarabad, Telangana, India
| | - Priyendu Bhattacharjee
- Department of Conservative Dentistry and Endodontics, Sri Sai College of Dental Surgery, Vikarabad, Telangana, India
| | - Aisha Habeeb
- Department of Conservative Dentistry and Endodontics, Sri Sai College of Dental Surgery, Vikarabad, Telangana, India
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Kula N, Lamch Ł, Futoma-Kołoch B, Wilk KA, Obłąk E. The effectiveness of newly synthesized quaternary ammonium salts differing in chain length and type of counterion against priority human pathogens. Sci Rep 2022; 12:21799. [PMID: 36526659 PMCID: PMC9757636 DOI: 10.1038/s41598-022-24760-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 11/21/2022] [Indexed: 12/23/2022] Open
Abstract
Quaternary ammonium salts (QAS) commonly occur as active substances in disinfectants. QAS have the important property of coating abiotic surfaces, which prevents adhesion of microorganisms, thus inhibiting biofilm formation. In this study, a group of nine monomeric QAS, differing in the structure and length of the aliphatic chain (C12, C14, C16) and the counterion (methylcarbonate, acetate, bromide), were investigated. The study included an analysis of their action against planktonic forms as well as bacterial biofilms. The compounds were tested for their anti-adhesion properties on stainless steel, polystyrene, silicone and glass surfaces. Moreover, mutagenicity analysis and evaluation of hemolytic properties were performed. It was found that compounds with 16-carbon hydrophobic chains were the most promising against both planktonic forms and biofilms. Tested surfactants (C12, C14, C16) showed anti-adhesion activity but it was dependent on the type of the surface and strain used. The tested compounds at MIC concentrations did not cause hemolysis of sheep blood cells. The type of counterion was not as significant for the activity of the compound as the length of the hydrophobic aliphatic chain.
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Affiliation(s)
- Natalia Kula
- Department of Physico-Chemistry of Microorganisms, Faculty of Biological Sciences, University of Wrocław, Przybyszewskiego 63/77, 51-148, Wrocław, Poland
| | - Łukasz Lamch
- Department of Engineering and Technology of Chemical Processes, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Bożena Futoma-Kołoch
- Department of Microbiology, Faculty of Biological Sciences, University of Wrocław, Przybyszewskiego 63/77, 51-148, Wrocław, Poland.
| | - Kazimiera A Wilk
- Department of Engineering and Technology of Chemical Processes, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Ewa Obłąk
- Department of Physico-Chemistry of Microorganisms, Faculty of Biological Sciences, University of Wrocław, Przybyszewskiego 63/77, 51-148, Wrocław, Poland.
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Bapat RA, Parolia A, Chaubal T, Yang HJ, Kesharwani P, Phaik KS, Lin SL, Daood U. Recent Update on Applications of Quaternary Ammonium Silane as an Antibacterial Biomaterial: A Novel Drug Delivery Approach in Dentistry. Front Microbiol 2022; 13:927282. [PMID: 36212832 PMCID: PMC9539660 DOI: 10.3389/fmicb.2022.927282] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 06/20/2022] [Indexed: 11/13/2022] Open
Abstract
Quaternary ammonium silane [(QAS), codename – k21] is a novel biomaterial developed by sol-gel process having broad spectrum antimicrobial activities with low cytotoxicity. It has been used in various concentrations with maximum antimicrobial efficacy and biocompatibility. The antimicrobial mechanism is displayed via contact killing, causing conformational changes within the bacterial cell membrane, inhibiting Sortase-A enzyme, and causing cell disturbances due to osmotic changes. The compound can attach to S1' pockets on matrix metalloproteinases (MMPs), leading to massive MMP enzyme inhibition, making it one of the most potent protease inhibitors. Quaternary ammonium silane has been synthesized and used in dentistry to eliminate the biofilm from dental tissues. QAS has been tested for its antibacterial activity as a cavity disinfectant, endodontic irrigant, restorative and root canal medication, and a nanocarrier for drug delivery approaches. The review is first of its kind that aims to discuss applications of QAS as a novel antibacterial biomaterial for dental applications along with discussions on its cytotoxic effects and future prospects in dentistry.
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Affiliation(s)
- Ranjeet Ajit Bapat
- Restorative Dentistry Division, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Abhishek Parolia
- Restorative Dentistry Division, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Tanay Chaubal
- Restorative Dentistry Division, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Ho Jan Yang
- Restorative Dentistry Division, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Prashant Kesharwani
- School of Pharmaceutical Education and Research, Jamia Hamdard (Hamdard University), New Delhi, India
| | - Khoo Suan Phaik
- Division of Clinical Oral Health, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Seow Liang Lin
- Restorative Dentistry Division, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Umer Daood
- Restorative Dentistry Division, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
- *Correspondence: Umer Daood
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Daood U, Bapat RA, Sidhu P, Ilyas MS, Khan AS, Mak KK, Pichika MR, Nagendrababu V, Peters OA. Antibacterial and antibiofilm efficacy of k21-E in root canal disinfection. Dent Mater 2021; 37:1511-1528. [PMID: 34420798 DOI: 10.1016/j.dental.2021.08.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/21/2021] [Accepted: 08/04/2021] [Indexed: 12/24/2022]
Abstract
OBJECTIVES The aim of the current project was to study the antimicrobial efficacy of a newly developed irrigant, k21/E against E. faecalis biofilm. METHODS Root canals were instrumented and randomly divided into the following groups: irrigation with saline, 6% NaOCl (sodium hypochlorite), 6% NaOCl+2% CHX (Chlorhexidine), 2% CHX, 0.5% k21/E (k21 - quaternary ammonium silane) and 1% k21/E. E. faecalis were grown (3-days) (1×107CFU mL-1), treated, and further cultured for 11-days. Specimens were subjected to SEM, confocal and Raman analysis and macrophage vesicles characterized along with effect of lipopolysaccharide treatment. 3T3 mouse-fibroblasts were cultured for alizarin-red with Sortase-A active sites and Schrödinger docking was performed. TEM analysis of root dentin substrate with matrix metalloproteinases profilometry was also included. A cytotoxic test analysis for cell viability was measured by absorbance of human dental pulp cells after exposure to different irrigant solutions for 24h. The test percentages have been highlighted in Table 1. RESULTS Among experimental groups, irrigation with 0.5% k21/E showed phase separation revealing significant bacterial reduction and lower phenylalanine 1003cm-1 and Amide III 1245cm-1 intensities. Damage was observed on bacterial cell membrane after use of k21/E. No difference in exosomes distribution between control and 0.5%k21/E was observed with less TNFα (*p<0.05) and preferential binding of SrtA. TEM images demonstrated integrated collagen fibers in control and 0.5%k21/E specimens and inner bacterial membrane damage after k21/E treatment. The k21 groups appeared to be biocompatible to the dental pulpal cells grown for 24h. SIGNIFICANCE Current investigations highlight potential advantages of 0.5% k21/E as irrigation solution for root canal disinfection.
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Affiliation(s)
- Umer Daood
- Division of Clinical Dentistry, School of Dentistry, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000 Bukit Jalil, Wilayah Persekutuan Kuala Lumpur, Malaysia.
| | - Ranjeet Ajit Bapat
- Division of Clinical Dentistry, School of Dentistry, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000 Bukit Jalil, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Preena Sidhu
- Division of Clinical Dentistry, School of Dentistry, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000 Bukit Jalil, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Muhammad Sharjeel Ilyas
- Department of Oral Biology, Post Graduate Medical Institute, 6 Birdwood Road, Lahore, Pakistan
| | - Abdul Samad Khan
- Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Kit-Kay Mak
- School of Pharmacy, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000 Bukit Jalil, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Mallikarjuna Rao Pichika
- School of Pharmacy, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000 Bukit Jalil, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | | | - Ove A Peters
- School of Dentistry, University of Queensland, Herston, Qld 4006, Australia; Department of Endodontics, Arthur A Dugoni School of Dentistry, University of the Pacific, San Francisco, CA, USA
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