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Astasov-Frauenhoffer M, Koegel S, Waltimo T, Zimmermann A, Walker C, Hauser-Gerspach I, Jung C. Antimicrobial efficacy of copper-doped titanium surfaces for dental implants. J Mater Sci Mater Med 2019; 30:84. [PMID: 31292785 DOI: 10.1007/s10856-019-6286-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 06/26/2019] [Accepted: 06/29/2019] [Indexed: 05/11/2023]
Abstract
The aim of this in vitro study was to quantify the antibacterial effect of a copper-deposited titanium surface as a model for dental implants on the peri-implantitis-associated strain Porphyromonas gingivalis (DSM 20709). A spark-assisted anodization method in a combined deposition-anodization process was applied to deposit copper on discs made of titanium. This method allows the deposition of different concentrations of copper on the surface by varying the process time. Conventional culturing was used to investigate the adhesion of P. gingivalis onto the discs over 2, 4, and 6 h as well as to study the antibacterial effect of copper released in solution. The viability of the bacterial cells is strongly inhibited on copper-deposited discs and reaches a CFU reduction of 3 log-units after 6 h in comparison to the reference. The copper released in solution causes a reduction of 4 log-units after a 6 h incubation time. With a 6 h incubation time, the CFU count decreases with increasing copper concentrations on the disc (by 2% for the 1.3 µg/disc; 32% for the 5.6 µg/disc; and 34% for the 9.5 µg/disc). However, at a higher copper concentration of 17.7 µg/disc, after 6 h, the decrease in the CFU count is less pronounced than that observed in solution, where a further decrease is observed. In conclusion, copper-functionalized titanium significantly reduces the survival of adhered bacteria and decreases the viable bacterial count in the environment surrounding the titanium. Thus, the area surrounding implants is being protected by copper released from the surface, forming a "safe zone" for improved implant healing.
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Affiliation(s)
- Monika Astasov-Frauenhoffer
- Department of Oral Health & Medicine, University Center for Dental Medicine, University of Basel, Hebelstrasse 3, 4056, Basel, Switzerland.
| | - Sally Koegel
- Department of Oral Health & Medicine, University Center for Dental Medicine, University of Basel, Hebelstrasse 3, 4056, Basel, Switzerland
| | - Tuomas Waltimo
- Department of Oral Health & Medicine, University Center for Dental Medicine, University of Basel, Hebelstrasse 3, 4056, Basel, Switzerland
| | - Andrea Zimmermann
- KKS Ultraschall AG, Medical Surface Center, Frauholzring 29, 6422, Steinen, Switzerland
| | - Cyril Walker
- KKS Ultraschall AG, Medical Surface Center, Frauholzring 29, 6422, Steinen, Switzerland
| | - Irmgard Hauser-Gerspach
- Department of Oral Health & Medicine, University Center for Dental Medicine, University of Basel, Hebelstrasse 3, 4056, Basel, Switzerland
| | - Christiane Jung
- KKS Ultraschall AG, Medical Surface Center, Frauholzring 29, 6422, Steinen, Switzerland.
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Gutt B, Ren Q, Hauser-Gerspach I, Kardas P, Stübinger S, Astasov-Frauenhoffer M, Waltimo T. Beneficial Oral Biofilms as Smart Bioactive Interfaces. Front Microbiol 2018; 9:107. [PMID: 29445368 PMCID: PMC5797747 DOI: 10.3389/fmicb.2018.00107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 01/17/2018] [Indexed: 12/20/2022] Open
Abstract
Periodontitis is a very common health problem caused by formation of pathogenic bacterial biofilm that triggers inflammation resulting in either reversible gingivitis or irreversible periodontal hard and soft tissue damages, leading to loss of teeth when left untreated. Commensal bacteria play an important role in oral health in many aspects. Mainly by colonizing oral tissues, they (i) contribute to maturation of immune response, and (ii) foreclose attachment of pathobiont and, therefore, prevent from infection. The main goal of the study was to investigate if blocking of receptors on a commensal biofilm can prevent or reduce the attachment of pathogenic strains. To do so, biofilm produced by commensal Streptococcus sanguinis was treated with whole cell lysate of pathobionts Fusobacterium nucleatum or Porphyromonas gingivalis, followed by incubation with respective strain(s). The study revealed significant reduction in pathobiont adhesion to lysate-treated commensal biofilm. Therefore, adhesion of pathobionts onto the lysate-blocked biofilm was hindered; however, not completely eliminated supporting the idea that such approach in the oral cavity would benefit the production of a well-balanced and healthy bioactive interface.
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Affiliation(s)
- Beatrice Gutt
- Laboratory for Biointerfaces, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
| | - Qun Ren
- Laboratory for Biointerfaces, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
| | - Irmgard Hauser-Gerspach
- Department of Preventive Dentistry and Oral Microbiology, University Center for Dental Medicine, University of Basel, Basel, Switzerland
| | - Piotr Kardas
- Department of Preventive Dentistry and Oral Microbiology, University Center for Dental Medicine, University of Basel, Basel, Switzerland
| | - Stefan Stübinger
- Hightech Research Center of Cranio-Maxillofacial Surgery, University of Basel, Basel, Switzerland
| | - Monika Astasov-Frauenhoffer
- Department of Preventive Dentistry and Oral Microbiology, University Center for Dental Medicine, University of Basel, Basel, Switzerland
| | - Tuomas Waltimo
- Department of Preventive Dentistry and Oral Microbiology, University Center for Dental Medicine, University of Basel, Basel, Switzerland
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Astasov-Frauenhoffer M, Mukaddam K, Hauser-Gerspach I, Köser J, Glatzel T, Kisiel M, Marot L, Kühl S. Antibacterial effects of bio-inspired nanostructured materials. J Oral Microbiol 2017. [PMCID: PMC5646622 DOI: 10.1080/20002297.2017.1325241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Several properties of bio-inspired surfaces like chemical composition, surface topography, surface hydrophilicity and even surface charge could influence bacterial adhesion to implant materials. Therefore, a nanostructured surface is being investigated to avoid bacterial colonization by their physico-mechanical and chemical aspects. Both smooth and rough-surfaced titanium (PT, SLA) and zirconia (M and ZLA) surfaces were used as controls. Titanium SLA was modified by two-step-etching to create nanostructured surface. Antibacterial properties of the materials were tested by adhesion of Porphyromonas gingivalis (ATCC 33277). The vitality of bacteria was assessed by Live/Dead BacLight™ Bacterial Viability Kit or by conventional culturing on Columbia blood agar. Conventional culturing revealed reduction of bacteria on nanostructured titanium (5.27±0.8 x 104 CFU/mm2) in comparison to rough-surfaced control materials (ZLA 6.16±4.86 x 104 and SLA 1.53±0.75 x 105 CFU/mm2). However, smooth-surfaced control materials (M 2.25±0.84 x 104 and PT 6.63±5.77 x 103 CFU/mm2) showed similar results to the nanostructured material. Live/dead staining demonstrated the antimicrobial efficacy of the nanostructured material revealing reduction of vital bacteria population up to 70%. This effect was not observed on the control materials (bacterial vitality ≥95%). In conclusion, nanostructured titanium surface shows a reduction of vital bacteria. Therefore, bio-inspired nanostructures can modify the bacteria–titanium interaction.
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Affiliation(s)
- Monika Astasov-Frauenhoffer
- Department of Preventive Dentistry and Oral Microbiology, University Center for Dental Medicine, University of Basel, Basel, Switzerland
| | - Khaled Mukaddam
- Department of Oral Surgery, Oral Radiology and Oral Medicine, University Center for Dental Medicine, University of Basel, Basel, Switzerland
| | - Irmgard Hauser-Gerspach
- Department of Preventive Dentistry and Oral Microbiology, University Center for Dental Medicine, University of Basel, Basel, Switzerland
| | - Joachim Köser
- Institut für Chemie und Bioanalytik, Hochschule für Life Sciences, Muttenz, Switzerland
| | - Thilo Glatzel
- Department of Physics, University of Basel, Basel, Switzerland
| | - Marcin Kisiel
- Department of Physics, University of Basel, Basel, Switzerland
| | - Laurent Marot
- Department of Physics, University of Basel, Basel, Switzerland
| | - Sebastian Kühl
- Department of Oral Surgery, Oral Radiology and Oral Medicine, University Center for Dental Medicine, University of Basel, Basel, Switzerland
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Roehling S, Astasov-Frauenhoffer M, Hauser-Gerspach I, Braissant O, Woelfler H, Waltimo T, Kniha H, Gahlert M. In Vitro Biofilm Formation on Titanium and Zirconia Implant Surfaces. J Periodontol 2017; 88:298-307. [DOI: 10.1902/jop.2016.160245] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Stefan Roehling
- Clinic for Oral and Cranio-Maxillofacial Surgery, Hightech Research Center, University Hospital Basel, University of Basel, Basel, Switzerland
- Clinic for Oral and Cranio-Maxillofacial Surgery, Cantonal Hospital Aarau, Aarau, Switzerland
| | - Monika Astasov-Frauenhoffer
- Clinic for Preventive Dentistry and Oral Microbiology, University Center for Dental Medicine Basel, University of Basel
| | - Irmgard Hauser-Gerspach
- Clinic for Preventive Dentistry and Oral Microbiology, University Center for Dental Medicine Basel, University of Basel
| | - Olivier Braissant
- Center of Biomechanics & Biocalorimetry, University of Basel
- Department of Urology, University Hospital Basel, University of Basel
| | | | - Tuomas Waltimo
- Clinic for Preventive Dentistry and Oral Microbiology, University Center for Dental Medicine Basel, University of Basel
| | | | - Michael Gahlert
- Clinic for Oral and Cranio-Maxillofacial Surgery, Hightech Research Center, University Hospital Basel, University of Basel, Basel, Switzerland
- Private practice, Munich, Germany
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Zaugg LK, Astasov-Frauenhoffer M, Braissant O, Hauser-Gerspach I, Waltimo T, Zitzmann NU. Determinants of biofilm formation and cleanability of titanium surfaces. Clin Oral Implants Res 2016; 28:469-475. [PMID: 26992098 DOI: 10.1111/clr.12821] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2016] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The aim of the present study was to analyze biofilm formation on four different titanium-based surfaces (machined titanium zirconium (TiZr) alloy, M; machined, acid-etched TiZr alloy, modMA; machined, sandblasted, acid-etched TiZr alloy, modSLA; and micro-grooved titanium aluminum vanadium alloy, TAV MG) in an experimental human model. MATERIAL AND METHODS Custom-made discs were mounted in individual intraoral splint housings and worn by 16 volunteers for 24 h. The safranin staining assay, isothermal microcalorimetry (IMC), and SEM were applied before and after surface cleaning. RESULTS The hydrophilic surfaces modMA and modSLA with greater surface micro-roughness exhibited significantly more biofilm than the hydrophobic surfaces TAV MG and M. The standardized cleaning procedure substantially reduced the biofilm mass on all surfaces. After cleaning, the IMC analyses demonstrated a longer lag time of the growth curve on TAV MG compared to modSLA. Inter- and intraindividual variations in biofilm formation on the titanium discs were evident throughout the study. CONCLUSIONS Surface hydrophilicity and roughness enhanced biofilm formation in vivo, whereas surface topography was the most influential factor that determined surface cleanability. While the grooved surface retained larger amounts of initial biofilm, the machined surface was easier to clean, but proliferation indicated by increased metabolic activity (growth rate) in IMC occurred despite mechanical biofilm removal.
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Affiliation(s)
- Lucia K Zaugg
- Department of Periodontology, Endodontology and Cariology, University Center for Dental Medicine, University of Basel, Basel, Switzerland
| | - Monika Astasov-Frauenhoffer
- Clinic for Preventive Dentistry and Oral Microbiology, University Center for Dental Medicine, University of Basel, Basel, Switzerland
| | - Olivier Braissant
- Center of Biomechanics & Biocalorimetry, University of Basel, Allschwil, Switzerland.,Department of Urology, University Hospital Basel, Basel, Switzerland
| | - Irmgard Hauser-Gerspach
- Clinic for Preventive Dentistry and Oral Microbiology, University Center for Dental Medicine, University of Basel, Basel, Switzerland
| | - Tuomas Waltimo
- Clinic for Preventive Dentistry and Oral Microbiology, University Center for Dental Medicine, University of Basel, Basel, Switzerland
| | - Nicola U Zitzmann
- Department of Periodontology, Endodontology and Cariology, University Center for Dental Medicine, University of Basel, Basel, Switzerland
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Hauser-Gerspach I, Erb S, Meyer J. [Not Available]. Swiss Dent J 2016; 126:687-693. [PMID: 27622545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This article gives a short overview about the epidemiology, transmission, clinical appearance, testing and therapy of hepatitis C virus infection and its importance in the healthcare setting. Standard infection control measures in dental practice remain essential for the prevention of HCV transmission.
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Affiliation(s)
- Irmgard Hauser-Gerspach
- Klinik für Präventivzahnmedizin und Orale Mikrobiologie, UZB-Universitätszahnkliniken, Basel, Switzerland
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Astasov-Frauenhoffer M, Braissant O, Hauser-Gerspach I, Weiger R, Walter C, Zitzmann NU, Waltimo T. Microcalorimetric Determination of the Effects of Amoxicillin, Metronidazole, and Their Combination on In Vitro Biofilm. J Periodontol 2014; 85:349-57. [DOI: 10.1902/jop.2013.120733] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Zaugg LK, Zitzmann NU, Hauser-Gerspach I, Waltimo T, Weiger R, Krastl G. Antimicrobial activity of short- and medium-term applications of polyhexamethylene biguanide, chlorhexidine digluconate and calcium hydroxide in infected immature bovine teethin vitro. Dent Traumatol 2013; 30:326-31. [DOI: 10.1111/edt.12077] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2013] [Indexed: 12/22/2022]
Affiliation(s)
- Lucia K. Zaugg
- Department of Periodontology, Endodontology and Cariology; University of Basel; Basel Switzerland
| | - Nicola U. Zitzmann
- Department of Periodontology, Endodontology and Cariology; University of Basel; Basel Switzerland
- Center of Dental Traumatology; University of Basel; Basel Switzerland
| | - Irmgard Hauser-Gerspach
- Department of Preventive Dentistry and Oral Microbiology; University of Basel; Basel Switzerland
| | - Tuomas Waltimo
- Center of Dental Traumatology; University of Basel; Basel Switzerland
- Department of Preventive Dentistry and Oral Microbiology; University of Basel; Basel Switzerland
| | - Roland Weiger
- Department of Periodontology, Endodontology and Cariology; University of Basel; Basel Switzerland
- Center of Dental Traumatology; University of Basel; Basel Switzerland
| | - Gabriel Krastl
- Department of Periodontology, Endodontology and Cariology; University of Basel; Basel Switzerland
- Center of Dental Traumatology; University of Basel; Basel Switzerland
- Department of Oral Surgery; School of Dentistry; University of Birmingham; Birmingham UK
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Hauser-Gerspach I, Mauth C, Waltimo T, Meyer J, Stübinger S. Effects of Er:YAG laser on bacteria associated with titanium surfaces and cellular response in vitro. Lasers Med Sci 2013; 29:1329-37. [DOI: 10.1007/s10103-013-1303-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Accepted: 03/05/2013] [Indexed: 11/28/2022]
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Astasov-Frauenhoffer M, Braissant O, Hauser-Gerspach I, Daniels AU, Weiger R, Waltimo T. Isothermal microcalorimetry provides new insights into biofilm variability and dynamics. FEMS Microbiol Lett 2012; 337:31-7. [DOI: 10.1111/1574-6968.12007] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 08/13/2012] [Accepted: 09/03/2012] [Indexed: 11/27/2022] Open
Affiliation(s)
- Monika Astasov-Frauenhoffer
- Institute of Preventive Dentistry and Oral Microbiology; School of Dental Medicine; University of Basel; Basel; Switzerland
| | | | - Irmgard Hauser-Gerspach
- Institute of Preventive Dentistry and Oral Microbiology; School of Dental Medicine; University of Basel; Basel; Switzerland
| | - Alma U. Daniels
- Laboratory of Biomechanics and Biocalorimetry; c/o Biozentrum/Pharmazentrum; University of Basel; Basel; Switzerland
| | - Roland Weiger
- Clinic for Periodontology, Endodontology and Cariology; University of Basel; Basel; Switzerland
| | - Tuomas Waltimo
- Institute of Preventive Dentistry and Oral Microbiology; School of Dental Medicine; University of Basel; Basel; Switzerland
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Masdea L, Kulik EM, Hauser-Gerspach I, Ramseier AM, Filippi A, Waltimo T. Antimicrobial activity of Streptococcus salivarius K12 on bacteria involved in oral malodour. Arch Oral Biol 2012; 57:1041-7. [PMID: 22405584 DOI: 10.1016/j.archoralbio.2012.02.011] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Revised: 01/23/2012] [Accepted: 02/11/2012] [Indexed: 10/28/2022]
Abstract
OBJECTIVE To investigate the antimicrobial activity of the bacteriocin-producing strain Streptococcus salivarius K12 against several bacteria involved in halitosis. DESIGN The inhibitory activity of S. salivarius K12 against Solobacterium moorei CCUG39336, four clinical S. moorei isolates, Atopobium parvulum ATCC33793 and Eubacterium sulci ATCC35585 was examined by a deferred antagonism test. Eubacterium saburreum ATCC33271 and Parvimonas micra ATCC33270, which have been tested in previous studies, served as positive controls, and the Gram-negative strain Bacteroides fragilis ZIB2800 served as a negative control. Additionally, the occurrence of resistance in S. moorei CCUG39336 to S. salivarius K12 was analysed by either direct plating or by passage of S. moorei CCUG39336 on chloroform-inactived S. salivarius K12-containing agar plates. RESULTS S. salivarius K12 suppressed the growth of all Gram-positive bacteria tested, but the extent to which the bacteria were inhibited varied. E. sulci ATCC35585 was the most sensitive strain, while all five S. moorei isolates were inhibited to a lesser extent. Natural resistance seems to be very low in S. moorei CCUG39336, and there was only a slight decrease in sensitivity after exposure to S. salivarius K12 over 10 passages. CONCLUSION Our studies demonstrate that S. salivarius K12 has antimicrobial activity against bacteria involved in halitosis. This strain might be an interesting and valuable candidate for the development of an antimicrobial therapy for halitosis.
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Affiliation(s)
- L Masdea
- Institute of Preventive Dentistry and Oral Microbiology, School of Dental Medicine, University of Basel, Switzerland
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12
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Astasov-Frauenhoffer M, Braissant O, Hauser-Gerspach I, Daniels AU, Wirz D, Weiger R, Waltimo T. Quantification of vital adherent Streptococcus sanguinis cells on protein-coated titanium after disinfectant treatment. J Mater Sci Mater Med 2011; 22:2045-2051. [PMID: 21670995 DOI: 10.1007/s10856-011-4377-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Accepted: 06/06/2011] [Indexed: 05/30/2023]
Abstract
The quantification of vital adherent bacteria is challenging, especially when efficacy of antimicrobial agents is to be evaluated. In this study three different methods were compared in order to quantify vital adherent Streptococcus sanguinis cells after exposure to disinfectants. An anaerobic flow chamber model accomplished initial adhesion of S. sanguinis on protein-coated titanium. Effects of chlorhexidine, Betadine®, Octenidol®, and ProntOral® were assessed by quantifying vital cells using Live/Dead BacLight™, conventional culturing and isothermal microcalorimetry (IMC). Results were analysed by Kruskal-Wallis one-way analysis of variance. Live/dead staining revealed highest vital cell counts (P < 0.05) and demonstrated dose-dependent effect for all disinfectants. Microcalorimetry showed time-delayed heat flow peaks that were proportioned to the remaining number of viable cells. Over 48 h there was no difference in total heat between treated and untreated samples (P > 0.05), indicating equivalent numbers of bacteria were created and disinfectants delayed growth but did not eliminate it. In conclusion, contrary to culturing, live/dead staining enables detection of cells that may be viable but non-cultivable. Microcalorimetry allows unique evaluation of relative disinfectant effects by quantifying differences in time delay of regrowth of remaining vital cells.
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Affiliation(s)
- Monika Astasov-Frauenhoffer
- Institute of Preventive Dentistry and Oral Microbiology, School of Dental Medicine, University of Basel, Basel, Switzerland.
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Hauser-Gerspach I, Stübinger S, Meyer J. Bactericidal effects of different laser systems on bacteria adhered to dental implant surfaces: anin vitrostudy comparing zirconia with titanium. Clin Oral Implants Res 2010; 21:277-83. [DOI: 10.1111/j.1600-0501.2009.01835.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hauser-Gerspach I, Pfäffli-Savtchenko V, Dähnhardt JE, Meyer J, Lussi A. Comparison of the immediate effects of gaseous ozone and chlorhexidine gel on bacteria in cavitated carious lesions in children in vivo. Clin Oral Investig 2008; 13:287-91. [DOI: 10.1007/s00784-008-0234-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2008] [Revised: 10/22/2008] [Accepted: 10/31/2008] [Indexed: 11/28/2022]
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Meier R, Hauser-Gerspach I, Lüthy H, Meyer J. Adhesion of oral streptococci to all-ceramics dental restorative materials in vitro. J Mater Sci Mater Med 2008; 19:3249-3253. [PMID: 18470704 DOI: 10.1007/s10856-008-3457-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2007] [Accepted: 04/16/2008] [Indexed: 05/26/2023]
Abstract
In recent years, patients have benefited from the development of better and more esthetic materials, including all-ceramics dental restorative materials. Dental plaque formation on teeth and restorative materials plays an important role in the pathogenesis of oral diseases. This study investigates initial adhesion of stationary phase streptococcal species to different all-ceramics dental restorative materials. The saliva-coated materials were incubated with the bacteria for 1 h in an in vitro flow chamber which mimics environmental conditions in the oral cavity. Number and vitality of adhering bacteria were determined microscopically after staining. Surface roughness and the composition of the materials had no distinctive influence on bacterial adhesion. However, S. mutans and S. sobrinus adhered about tenfold less numerous to all materials than the other streptococcal species. Further, there was a correlation between bacterial vitality and materials' glass content. The results showed that early plaque formation was influenced predominantly by the presence of the salivary pellicle rather than by material dependent parameters whereas the composition of the all-ceramics appeared to have influenced the percentage of viable cells during the adhesion process. This presented in vitro technique may provide a useful model to study the influence of different parameters on adherence of oral streptococcal species.
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Affiliation(s)
- R Meier
- Institute of Preventive Dentistry and Oral Microbiology, Dental School, University of Basel, Hebelstrasse 3, 4056 Basel, Switzerland
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Slenters TV, Hauser-Gerspach I, Daniels AU, Fromm KM. Silver coordination compounds as light-stable, nano-structured and anti-bacterial coatings for dental implant and restorative materials. ACTA ACUST UNITED AC 2008. [DOI: 10.1039/b813026d] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Hauser-Gerspach I, de Freitas PS, Dan Daniels AU, Meyer J. Adhesion ofStreptococcus sanguinis to glass surfaces measured by isothermal microcalorimetry (IMC). J Biomed Mater Res B Appl Biomater 2008; 85:42-9. [PMID: 17696148 DOI: 10.1002/jbm.b.30914] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Bacterial adhesion is the first step in the development of the oral biofilm, called dental plaque. Plaque is the cause of caries, periodontal diseases, and periimplantitis. Investigations of dental plaque, including bacterial adhesion, employ various in vivo and in vitro models using microscopic methods. Microcalorimetry offers another direct approach. The model organism Streptococcus sanguinis is one of the first colonizers adhering to the saliva-coated human tooth surfaces or dental materials within minutes after tooth cleaning. TAM III thermostats, equipped with microcalorimeters, were used for isothermal microcalorimetric (IMC) measurements of heat production as a function of time, expressed by power-time (p-t) curves. Continuous measurements of heat production of growing S. sanguinis cells showed their overall metabolic activity and were highly reproducible. For the adhesion experiments the bacteria were allowed to adhere to different amounts of glass beads. Growing S. sanguinis cells produced a characteristic p-t curve with a maximum of 500 microW at 4.5 h when reaching 10(9) cells ml(-1). The same number of stationary S. sanguinis cells, suspended in PBS produced only approximately 30 microW at 0.5 h due to adhesion. But the amount of heat increased with available glass surface area, indicating that a portion of the heat of adhesion was measured. Similar results were obtained with stationary S. sanguinis cells suspended in human saliva. This study shows that microcalorimetric evaluation of initial bacterial adhesion is indeed possible and may become a rapid, reproducible screening method to study adhesion of different bacteria to different dental materials or to modified surfaces.
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Affiliation(s)
- Irmgard Hauser-Gerspach
- Institute of Preventive Dentistry and Oral Microbiology, Dental School, University of Basel, Hebelstrasse 3, 4056 Basel, Switzerland.
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Hauser-Gerspach I, Kulik EM, Weiger R, Decker EM, Von Ohle C, Meyer J. Adhesion of Streptococcus sanguinis to Dental Implant and Restorative Materials in vitro. Dent Mater J 2007; 26:361-6. [PMID: 17694745 DOI: 10.4012/dmj.26.361] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Bacterial adhesion to tooth surfaces or dental materials starts immediately upon exposure to the oral environment. The aim of this study, therefore, was to compare the adhesion of Streptococcus sanguinis to saliva-coated human enamel and dental materials - during a one-hour period - using an in vitro flow chamber system which mimicked the oral cavity. After fluorescent staining, the number of adhered cells and their vitality were recorded. The dental materials used were: titanium (Rematitan M), gold (Neocast 3), ceramic (Vita Omega 900), and composite (Tetric Ceram). The number of adherent bacterial cells was higher on titanium, gold, and ceramic surfaces and lower on composite as compared to enamel. As for the percentage of adherent vital cells, it was higher on enamel than on the restorative materials tested. These results suggested that variations in the number and vitality of the adherent pioneer oral bacteria, S. sanguinis, in the in vitro system depended on the surface characteristics of the substratum and the acquired salivary pellicle. The in vitro adhesion model used herein provided a simple and reproducible approach to investigate the impact of surface-modified dental materials on bacterial adhesion and vitality.
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Affiliation(s)
- Irmgard Hauser-Gerspach
- Institute of Preventive Dentistry and Oral Microbiology, University of Basel, Hebelstrasse 3, 4056 Basel, Switzerland.
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