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Fardi A, Lillis T, Podaropoulos L, Papadimitriou S, Veis A, Dabarakis Ν. Hard and soft tissue healing around implants with Ag coating: An experimental study in dogs. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2024; 125:101714. [PMID: 38013117 DOI: 10.1016/j.jormas.2023.101714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 11/24/2023] [Indexed: 11/29/2023]
Abstract
Introduction The purpose of this randomized controlled canine experimental study was to evaluate peri‑implant hard and soft tissue healing around implants with silver coating. Methods All mandibular premolars and molars of five male beagle dogs were extracted. 25 test and 25 control implants were randomly installed and connected with the healing abutments. After 2 and 4 month healing period, implants with soft and hard tissues were obtained for histologic and histomorphometric analysis. Results In mesio-distal sections, supracrestal tissue attachment dimensions were 4.03±0.48 mm and 4.25±0.66 mm for test and 4.34±0.6 mm and 5.21±0.72 mm for control implants at 2 and 4 month healing time. The respective crestal bone loss values were 1.10±0.69 mm and 0.74±0.67 mm for test and 1.13±0.48 mm and 1.49±0.65 mm for control implants. The differences were statistically significant only in the 4-month healing period. In buccolingual sections, supracrestal tissue attachment height at 2 and 4 month healing periods were 4.09±0.64 mm and 4.5±0.8 mm for test implants and 4.17±0.76 mm and 4.48±0.76 mm for control implants. The respective mean values for crestal bone loss were 1.31±0.6 mm and 1.02±0.58 mm for test implants, and 1.28±0.61 mm and 1.29±0.69 mm for control implants. No statistical significant differences were recorded, apart from the height of connective tissue at the 2 month healing group. No significant difference in terms of BIC between implants or healing periods was recorded. Conclusions The Ag implant coating resulted in smaller supracrestal tissue attachment dimensions and less bone loss. Within the limits of a canine study, prevention of crestal bone loss along with the effectiveness of Ag antimicrobial properties in dental implantology is demonstrated.
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Affiliation(s)
- Anastasia Fardi
- Department of Dentoalveolar Surgery, Surgical Implantology & Radiology, Faculty of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, Greece.
| | - Theodoros Lillis
- Department of Dentoalveolar Surgery, Surgical Implantology & Radiology, Faculty of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Leonidas Podaropoulos
- Department of Oral and Maxillofacial Surgery, Dental School, University of Athens, Greece
| | | | - Alexander Veis
- Department of Dentoalveolar Surgery, Surgical Implantology & Radiology, Faculty of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Νikolaos Dabarakis
- Department of Dentoalveolar Surgery, Surgical Implantology & Radiology, Faculty of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, Greece
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Daud NM, Masri NA, Nik Malek NAN, Abd Razak SI, Saidin S. Long-term antibacterial and stable chlorhexidine-polydopamine coating on stainless steel 316L. PROGRESS IN ORGANIC COATINGS 2018; 122:147-153. [DOI: 10.1016/j.porgcoat.2018.05.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Bayramov DF, Neff JA. Beyond conventional antibiotics - New directions for combination products to combat biofilm. Adv Drug Deliv Rev 2017; 112:48-60. [PMID: 27496704 DOI: 10.1016/j.addr.2016.07.010] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 06/10/2016] [Accepted: 07/26/2016] [Indexed: 12/17/2022]
Abstract
Medical device related infections are a significant and growing source of morbidity and mortality. Biofilm formation is a common feature of medical device infections that is not effectively prevented or treated by systemic antibiotics. Antimicrobial medical device combination products provide a pathway for local delivery of antimicrobial therapeutics with the ability to achieve high local concentrations while minimizing systemic side effects. In this review, we present considerations for the design of local antimicrobial delivery systems, which can be facilitated by modeling local pharmacokinetics in the context of the target device application. In addition to the need for local delivery, a critical barrier to progress in the field is the need to incorporate agents effective against biofilm. This article aims to review key properties of antimicrobial peptides that make them well suited to meet the demands of the next generation of antimicrobial medical devices, including broad spectrum activity, rapid and biocidal mechanisms of action, and efficacy against biofilm.
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Müller G, Benkhai H, Matthes R, Finke B, Friedrichs W, Geist N, Langel W, Kramer A. Poly (hexamethylene biguanide) adsorption on hydrogen peroxide treated Ti–Al–V alloys and effects on wettability, antimicrobial efficacy, and cytotoxicity. Biomaterials 2014; 35:5261-5277. [DOI: 10.1016/j.biomaterials.2014.03.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 03/14/2014] [Indexed: 11/16/2022]
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Javed F, Hussain HA, Romanos GE. Re-stability of dental implants following treatment of peri-implantitis. Interv Med Appl Sci 2013; 5:116-21. [PMID: 24265901 DOI: 10.1556/imas.5.2013.3.4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2013] [Revised: 08/04/2013] [Accepted: 08/05/2013] [Indexed: 11/19/2022] Open
Abstract
It is hypothesized that active treatment of peri-implantitis (PI) leads to re-stabilization of dental implants. The aim was to assess whether or not dental implants can re-stabilize following treatment of PI. To address the focused question, MEDLINE/PubMed and Google-Scholar databases were explored from 1977 up to and including August 2013. Any disagreements between the authors were resolved via discussion. Articles published only in English were included. Hand searching was also performed. Thirteen experimental studies were included. The treatment regimes adopted in these studies comprised of antibiotic therapy, guided bone regeneration (GBR), laser therapy, use of bone matrix proteins with membrane, conventional flap surgery and mechanical debridement. In four studies, GBR promoted new bone formation; whereas two studies showed photosensitization therapy (in combination with either mechanical debridement or GBR) to regenerate bone around peri-implant defects. Six studies reported that mechanical debridement in conjunction with antibiotic therapy promoted re-stability of dental implants. In one study, recombinant human bone matrix protein-2 with a collagen membrane helped promote re-stabilization of dental implants. New bone formation may occur to some extent around dental implants following treatment for PI; however, a "complete" re-stability may be difficult to achieve without GBR.
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Machtei EE, Frankenthal S, Levi G, Elimelech R, Shoshani E, Rosenfeld O, Tagger‐Green N, Shlomi B. Treatment of peri‐implantitis using multiple applications of chlorhexidine chips: a double‐blind, randomized multi‐centre clinical trial. J Clin Periodontol 2012; 39:1198-205. [DOI: 10.1111/jcpe.12006] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/11/2012] [Indexed: 11/30/2022]
Affiliation(s)
- Eli E. Machtei
- Department of Periodontology School of Graduate Dentistry Rambam HCC and Faculty of Medicine Technion – Israeli Institute of Technology Haifa Israel
| | - Shai Frankenthal
- Department of Periodontology School of Graduate Dentistry Rambam HCC and Faculty of Medicine Technion – Israeli Institute of Technology Haifa Israel
| | - Guy Levi
- Department of Periodontology School of Graduate Dentistry Rambam HCC and Faculty of Medicine Technion – Israeli Institute of Technology Haifa Israel
| | - Rina Elimelech
- Department of Periodontology School of Graduate Dentistry Rambam HCC and Faculty of Medicine Technion – Israeli Institute of Technology Haifa Israel
| | | | - Olivia Rosenfeld
- Department of Oral and Maxillofacial Surgery Tel Aviv Sourasky Medical Center Tel‐Aviv Israel
| | - Nirit Tagger‐Green
- Department of Oral and Maxillofacial Surgery Tel Aviv Sourasky Medical Center Tel‐Aviv Israel
| | - Benjamin Shlomi
- Department of Oral and Maxillofacial Surgery Tel Aviv Sourasky Medical Center Tel‐Aviv Israel
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Titanium as a Reconstruction and Implant Material in Dentistry: Advantages and Pitfalls. MATERIALS 2012. [PMCID: PMC5449026 DOI: 10.3390/ma5091528] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Commercial pure titanium (cpTi) has been the material of choice in several disciplines of dentistry due to its biocompatibility, resistance to corrosion and mechanical properties. Despite a number of favorable characteristics, cpTi as a reconstruction and oral implant material has several shortcomings. This paper highlights current knowledge on material properties, passive oxidation film formation, corrosion, surface activation, cell interactions, biofilm development, allergy, casting and machining properties of cpTi for better understanding and potential improvement of this material for its clinical applications.
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Surface Engineering for Bone Implants: A Trend from Passive to Active Surfaces. COATINGS 2012. [DOI: 10.3390/coatings2030095] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Pfeufer NY, Hofmann-Peiker K, Mühle M, Warnke PH, Weigel MC, Kleine M. Bioactive coating of titanium surfaces with recombinant human β-defensin-2 (rHuβD2) may prevent bacterial colonization in orthopaedic surgery. J Bone Joint Surg Am 2011; 93:840-6. [PMID: 21543673 DOI: 10.2106/jbjs.i.01738] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND A promising strategy to prevent infections around orthopaedic titanium implants is to use naturally occurring cationic antimicrobial peptides (CAMPs) such as the human β-defensin-2 as antibacterial coatings. Human antimicrobial peptides represent a part of the innate immune system and have a broad antimicrobial spectrum against bacteria, fungi, and viruses. METHODS In the present study, titanium surfaces were functionalized by four different self-assembled monolayers (SAMs) forming methoxy silanes: (1) hexadecyltrimethoxysilane, (2) dimethoxymethyloctylsilane, (3) allyltrimethylsilane, and (4) 3-aminopropyltrimethoxysilane. In addition, calf skin type-I collagen was cross-linked to the SAM surface 3-aminopropyltrimethoxysilane by means of two different treatments: (1) N-hydroxysuccinimide and (2) glutaraldehyde. The functionalized titanium surfaces were coated with recombinant human β-defensin-2 (rHuβD2), an antimicrobial peptide, and were tested for antibacterial activity against Escherichia coli. The release of rHuβD2 was quantified by means of enzyme-linked immunosorbent assay (ELISA). RESULTS The coating of functionalized titanium surfaces with rHuβD2 was successful. Recombinant HuβD2 was eluted from the titanium surfaces continuously, yielding antimicrobial activity up to several hours. Antimicrobial activity with a killing rate of 100% was observed for all functionalized titanium surfaces after two hours of incubation. The dimethoxymethyloctylsilane-functionalized titanium surface delivered 0.65 μg of rHuβD2 after six hours with a 60% bacterial killing rate. The silane-functionalized surfaces exhibited a faster release of antimicrobially active rHuβD2 compared with collagen modifications. CONCLUSIONS Natural antibiotics such as rHuβD2 integrated into the metal surface of titanium implants may be a promising tool to prevent and control infections around orthopaedic implants.
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Carrilho MR, Carvalho RM, Sousa EN, Nicolau J, Breschi L, Mazzoni A, Tjäderhane L, Tay FR, Agee K, Pashley DH. Substantivity of chlorhexidine to human dentin. Dent Mater 2010; 26:779-85. [PMID: 20472282 DOI: 10.1016/j.dental.2010.04.002] [Citation(s) in RCA: 139] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Accepted: 04/21/2010] [Indexed: 10/19/2022]
Abstract
OBJECTIVES To better comprehend the role of CHX in the preservation of resin-dentin bonds, this study investigated the substantivity of CHX to human dentin. MATERIAL AND METHODS Dentin disks (n=45) were obtained from the mid-coronal portion of human third molars. One-third of dentin disks were kept mineralized (MD), while the other two-thirds had one of the surfaces partially demineralized with 37% phosphoric acid for 15 s (PDD) or they were totally demineralized with 10% phosphoric acid (TDD). Disks of hydroxyapatite (HA) were also prepared. Specimens were treated with: (1) 10 microL of distilled water (controls), (2) 10 microL of 0.2% chlorhexidine diacetate (0.2% CHX) or (3) 10 microL of 2% chlorhexidine diacetate (2% CHX). Then, they were incubated in 1 mL of PBS (pH 7.4, 37 degrees C). Substantivity was evaluated as a function of the CHX-applied dose after: 0.5 h, 1 h, 3 h, 6 h, 24 h, 168 h (1 week), 672 h (4 weeks) and 1344 h (8 weeks) of incubation. CHX concentration in eluates was spectrophotometrically analyzed at 260 nm. RESULTS Significant amounts of CHX remained retained in dentin substrates (MD, PPD or TDD), independent on the CHX-applied dose or time of incubation (p<0.05). High amounts of retained CHX onto HA were observed only for specimens treated with the highest concentration of CHX (2%) (p<0.05). CONCLUSION The outstanding substantivity of CHX to dentin and its reported effect on the inhibition of dentinal proteases may explain why CHX can prolong the durability of resin-dentin bonds.
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Affiliation(s)
- Marcela R Carrilho
- GEO/UNIBAN, Health Institute, Bandeirante University of São Paulo, São Paulo, Brazil
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Zhao L, Chu PK, Zhang Y, Wu Z. Antibacterial coatings on titanium implants. J Biomed Mater Res B Appl Biomater 2009; 91:470-80. [DOI: 10.1002/jbm.b.31463] [Citation(s) in RCA: 645] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Li B, Liu X, Cao C, Dong Y, Wang Z, Ding C. Biological and antibacterial properties of plasma sprayed wollastonite coatings grafting gentamicin loaded collagen. J Biomed Mater Res A 2008; 87:84-90. [DOI: 10.1002/jbm.a.31776] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ghiselli R, Giacometti A, Cirioni O, Mocchegiani F, Silvestri C, Orlando F, Kamysz W, Licci A, Nadolski P, Della Vittoria A, Łukasiak J, Scalise G, Saba V. Pretreatment with the protegrin IB-367 affects Gram-positive biofilm and enhances the therapeutic efficacy of linezolid in animal models of central venous catheter infection. JPEN J Parenter Enteral Nutr 2007; 31:463-468. [PMID: 17947600 DOI: 10.1177/0148607107031006463] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
BACKGROUND Biofilms play an important role in the pathogenesis of several chronic infections and nosocomial infections related to indwelling medical devices. METHODS To assess the efficacy of IB-367 and linezolid (LZD) in the treatment of central venous catheter (CVC) infections using the antibiotic-lock technique, in vitro and in vivo studies were performed. The in vitro antibiotic susceptibility assay for Staphylococcus aureus and Enterococcus faecalis biofilms developed on 96-well polystyrene tissue culture plates was performed to determine the activity of the compounds. Efficacy studies were performed in rat models of Gram-positive CVC infection. Silastic catheters were implanted into the superior cava of adult male Wistar rats. Twenty-four hours after implantation, the catheters were pretreated by filling with IB-367. Thirty minutes later, rats were challenged via the CVC with 1.0 x 10(6) CFU (colony forming units) of S aureus strain diffuse Smith and clinical isolate of slime-producing E faecalis. Administration of LZD into the CVC at a concentration equal to the minimum bacteriocidal concentration observed using adherent cells or at a much higher concentration (1024 microg/mL) began 24 hours later. RESULTS Both for S aureus and E faecalis, the killing activities of LZD against adherent bacteria were at least 4-fold to 8-fold lower than that against freely growing cells. For both strains, in IB-367-pretreated wells, LZD strongly increases its activity. The in vivo studies showed that when CVCs were pretreated with IB-367, Gram-positive biofilm bacterial load was further decreased to 10(1) CFU/mL and bacteremia was not detected. CONCLUSIONS IB-367 has potential as an adjunctive agent to LZD in the treatment of Gram-positive biofilm infections such as CVC infections.
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Affiliation(s)
- Roberto Ghiselli
- Department of General Surgery, I.N.R.C.A. I.R.R.C.S., Università Politecnica delle Marche, Ancona, Italy
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Li B, Liu X, Cao C, Ding C. Biocompatibility and antibacterial activity of plasma sprayed titania coating grafting collagen and gentamicin. J Biomed Mater Res A 2007; 83:923-930. [PMID: 17567859 DOI: 10.1002/jbm.a.31414] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In this article, the plasma sprayed titania coatings were treated by grafting pure and gentamicin loaded collagen to improve the biocompatibility and antibacterial activity. The biocompatibility of the titania coating grafting collagen was evaluated by in vitro cell culturing test. The release rate of gentamicin from collagen was measured in tris-HCl buffer using UV spectrophotometer, and the antibacterial activity of the titania coating with gentamicin against Staphylococcus aureus was examined using the zone of inhibition test. The results showed that collagen was successfully grafted on the surface of titania coatings treated by sulfuric acid. The in vitro cell culturing test revealed that collagen significantly improved the cell adhesion and proliferation on the surface of titania coatings. The gentamicin loaded in collagen matrix could retain a sustained release in tris-HCl for 30 days, which was efficient to protect against the postoperative infection caused by S. aureus. The results indicated that the plasma sprayed titania coating grafting collagen and gentamicin would have the antibacterial activity together with the biocompatibility, which might be beneficial for the long term stability and surgical success rate of implants.
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Affiliation(s)
- Baoe Li
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China
| | - Xuanyong Liu
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China
| | - Cong Cao
- Department of Orthopaedics, Renji Hospital, College of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Chuanxian Ding
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China
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