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Chladek G, Kalamarz I, Pakieła W, Barszczewska-Rybarek I, Czuba Z, Mertas A. A Temporary Acrylic Soft Denture Lining Material Enriched with Silver-Releasing Filler-Cytotoxicity, Mechanical and Antifungal Properties. MATERIALS (BASEL, SWITZERLAND) 2024; 17:902. [PMID: 38399153 PMCID: PMC10890124 DOI: 10.3390/ma17040902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/07/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024]
Abstract
Colonization of temporary denture soft linings and underlying tissues by yeast-like fungi is an important clinical problem due to the negative influence on the process of prosthetic treatment. Typical hygienic procedures are often insufficient to prevent fungal infections, so in this study, an antimicrobial filler (silver sodium hydrogen zirconium phosphate) was introduced into acrylic soft liner at concentrations of 1, 2, 4, 6, 8 and 10% (w/w). The effect of this modification on antifungal properties against Candida albicans, cytotoxicity, Shore A hardness, tensile strength and tensile bond strength, sorption and solubility was investigated, considering the recommended 30-day period of temporary soft lining use. The most favorable compilation of properties was obtained at a 1 to 6% filler content, for which nearly a total reduction in Candida albicans was registered even after 30 days of sample storing. The tensile and bond strength of these composites was at the desired and stable level and did not differ from the results for the control material. Hardness increased with the increasing concentration in filler but were within the range typical for soft lining materials and their changes during the experiment were similar to the control material. The materials were not cytotoxic and sorption and solubility levels were stable.
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Affiliation(s)
- Grzegorz Chladek
- Materials Research Laboratory, Faculty of Mechanical Engineering, Silesian University of Technology, 18a Konarskiego Str., 41-100 Gliwice, Poland
| | - Igor Kalamarz
- Igor Kalamarz Dental Practice, 6 Kotlarza Str., 40-139 Katowice, Poland;
| | - Wojciech Pakieła
- Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, 18a Konarskiego Str., 41-100 Gliwice, Poland;
| | - Izabela Barszczewska-Rybarek
- Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology, Strzody 9 Str., 44-100 Gliwice, Poland;
| | - Zenon Czuba
- Department of Microbiology and Immunology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 19 Jordana Str., 41-808 Zabrze, Poland; (Z.C.); (A.M.)
| | - Anna Mertas
- Department of Microbiology and Immunology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 19 Jordana Str., 41-808 Zabrze, Poland; (Z.C.); (A.M.)
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2
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Chladek G, Nowak M, Pakieła W, Barszczewska-Rybarek I, Żmudzki J, Mertas A. The Effect of Exposure to Candida Albicans Suspension on the Properties of Silicone Dental Soft Lining Material. MATERIALS (BASEL, SWITZERLAND) 2024; 17:723. [PMID: 38591629 PMCID: PMC10856526 DOI: 10.3390/ma17030723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/19/2024] [Accepted: 01/31/2024] [Indexed: 04/10/2024]
Abstract
While functioning in the oral cavity, denture soft linings (SL) are exposed to contact with the microbiota. Dentures can offer perfect conditions for the multiplication of pathogenic yeast-like fungi, resulting in rapid colonisation of the surface of the materials used. In vitro experiments have also shown that yeast may penetrate SL. This may lead to changes in their initially beneficial functional properties. The aim of this work was to investigate the effect of three months of exposure to a Candida albicans suspension on the mechanical properties of SL material and its bond strength to the denture base polymer, and to additionally verify previous reports of penetration using a different methodology. Specimens of the SL material used were incubated for 30, 60 and 90 days in a suspension of Candida albicans strain (ATCC 10231). Their shore A hardness, tensile strength, and bond strength to acrylic resin were tested. The colonization of the surface and penetration on fractured specimens were analysed with scanning electron and inverted fluorescence microscopes. Exposure to yeast did not affect the mechanical properties. The surfaces of the samples were colonised, especially in crystallized structures of the medium; however, the penetration of hyphae and blastospores into the material was not observed.
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Affiliation(s)
- Grzegorz Chladek
- Materials Research Laboratory, Faculty of Mechanical Engineering, Silesian University of Technology, 18a Konarskiego Str., 41-100 Gliwice, Poland
| | - Michał Nowak
- Nova Clinic, 22 Jankego Str., 40-612 Katowice, Poland;
| | - Wojciech Pakieła
- Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, 18a Konarskiego Str., 41-100 Gliwice, Poland; (W.P.); (J.Ż.)
| | - Izabela Barszczewska-Rybarek
- Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology, Strzody 9 Str., 44-100 Gliwice, Poland;
| | - Jarosław Żmudzki
- Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, 18a Konarskiego Str., 41-100 Gliwice, Poland; (W.P.); (J.Ż.)
| | - Anna Mertas
- Department of Microbiology and Immunology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 19 Jordana Str., 41-808 Zabrze, Poland;
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Ahmed AQ, Al-Hmedat SJAZ, Hanweet DM, Haider J. Assessing the Antifungal Activity of a Soft Denture Liner Loaded with Titanium Oxide Nanoparticles (TiO2 NPs). Dent J (Basel) 2023; 11:dj11040090. [PMID: 37185468 PMCID: PMC10137426 DOI: 10.3390/dj11040090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 02/28/2023] [Accepted: 03/24/2023] [Indexed: 03/31/2023] Open
Abstract
Aim: Soft denture lining materials are susceptible to be colonized by different microorganisms, especially by Candida albicans (C. albicans), causing denture-induced stomatitis. This study was designed to evaluate the effectiveness of incorporating titanium dioxide nanoparticles (TiO2 NPs) into a soft denture liner towards reducing microbial activity. Method: A total of 40 PEMA-TiO2 nanocomposites samples were fabricated by adding 0.0 wt.% (control), 1.0 wt.%, 1.5 wt.%, and 2 wt.% TiO2 NPs to a heat cured soft denture lining material (polyethyl methacrylate, PEMA). The prepared samples were divided into four groups (n = 10) according to the content of TiO2 NPs. The uniformity of TiO2 NPS distribution within the denture liner matrix was assessed using a Scanning Electron Microscope (SEM). The viable count of C. albicans was evaluated to test the antifungal resistance of the developed composite. Results: The SEM images showed fairly homogeneous dispersion, with patches of TiO2 NPs agglomeration within the PEMA matrix and an increasing concentration of NPs with higher NP content. The particle map and EDX analysis confirmed the evidence of the TiO2 NPs. The mean viable count results for the control (0.0 wt.%) and 1.0 wt.%, 1.5 wt.%, and 2 wt.% TiO2 groups were 139.80, 12.00, 6.20, and 1.00, respectively, with a significant difference from the control group (p < 0.05). The antifungal activity also increased with the increase in the concentration of TiO2 NPs. Conclusions: The addition of TiO2 NPs into a heat-cured soft denture liner provided antifungal activity as evidenced by the reduced colonization of C. albicans. The antimicrobial activity of the liner material increased with the increased concentration of TiO2 NPS.
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Rai A, Misra SR, Panda S, Sokolowski G, Mishra L, Das R, Lapinska B. Nystatin Effectiveness in Oral Candidiasis Treatment: A Systematic Review & Meta-Analysis of Clinical Trials. Life (Basel) 2022; 12:1677. [PMID: 36362833 PMCID: PMC9697841 DOI: 10.3390/life12111677] [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: 09/28/2022] [Revised: 10/18/2022] [Accepted: 10/21/2022] [Indexed: 02/12/2024] Open
Abstract
Oral candidiasis is the most common opportunistic fungal infection caused by commensal Candida species. Since there are various local and systemic predisposing factors for the disease, the treatment also varies from topical to systemic antifungal agents. Nystatin is a common antifungal agent used topically. The aim of this systematic review was to evaluate and compare the efficacy of different antifungal agents and the safety of nystatin in the treatment of oral candidiasis. Three electronic databases were searched for randomized controlled trials comparing nystatin with other anti-fungal therapies or placebo. Clinical and/or mycological cure was the outcome evaluation. A meta-analysis and descriptive study on the efficacy, treatment protocols, and safety of nystatin was also conducted. The meta-analysis included five studies, which compared the efficacy of nystatin suspensions with photodynamic therapy. A significant difference in the colony-forming units per milliliters (CFU/mL) of Candida species was observed at 60 days intervals for both palatal mucosa and denture surfaces, with both groups favoring nystatin with low heterogeneity at a 95% confidence interval. Nystatin and photodynamic therapy were found to be equally effective for the clinical remission of denture stomatitis as well as a significant reduction of CFU/mL of Candida species from dentures and palatal surfaces of the patients.
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Affiliation(s)
- Anamika Rai
- Department of Oral Medicine & Radiology, Institute of Dental Sciences, Siksha ‘O’ Anusandhan University, Bhubaneswar 751003, India
| | - Satya Ranjan Misra
- Department of Oral Medicine & Radiology, Institute of Dental Sciences, Siksha ‘O’ Anusandhan University, Bhubaneswar 751003, India
| | - Saurav Panda
- Department of Periodontics, Institute of Dental Sciences, Siksha ‘O’ Anusandhan University, Bhubaneswar 751003, India
| | - Grzegorz Sokolowski
- Department of Prosthetics, Medical University of Lodz, 251 Pomorska St., 92-213 Lodz, Poland
| | - Lora Mishra
- Department of Conservative Dentistry & Endodontics, Institute of Dental Sciences, Siksha ‘O’ Anusandhan University, Bhubaneswar 751003, India
| | - Rupsa Das
- Department of Oral Medicine & Radiology, Institute of Dental Sciences, Siksha ‘O’ Anusandhan University, Bhubaneswar 751003, India
| | - Barbara Lapinska
- Department of General Dentistry, Medical University of Lodz, 251 Pomorska St, 92-213 Lodz, Poland
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Chuchulska B, Hristov I, Dochev B, Raychev R. Changes in the Surface Texture of Thermoplastic (Monomer-Free) Dental Materials Due to Some Minor Alterations in the Laboratory Protocol-Preliminary Study. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6633. [PMID: 36233975 PMCID: PMC9570521 DOI: 10.3390/ma15196633] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 09/16/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
Contemporary thermoplastic monomer-free prosthetic materials are widely used nowadays, and there are a great variety available on the market. These materials are of interest in terms of the improvement of the quality features of the removable dentures. The aim of this study is to establish how minimal changes in the laboratory protocol of polyamide prosthetic base materials influence the surface texture. Two polyamide materials intended for the fabrication of removable dentures bases were used-Perflex Biosens (BS) and VertexTM ThermoSens (TS). A total number of 20 coin-shaped samples were prepared. They were injected under two different modes-regular, as provided by the manufacturer, and modified, proposed by the authors of this study. Scanning electronic microscopy (SEM) under four magnifications-×1000, ×3000, ×5000, and ×10,000-was conducted. With minimal alterations to the melting temperature (5 °C) and the pressure (0.5 Bar), in Biosens, no changes in terms of surface improvement were found, whereas in ThermoSens, the surface roughness of the material significantly changed in terms of roughness reduction. By modifying the technological mode during injection molding, a smoother surface was achieved in one of the studied materials.
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Affiliation(s)
- Bozhana Chuchulska
- Department of Prosthetic Dental Medicine, Faculty of Dental Medicine, Medical University of Plovdiv, 4000 Plovdiv, Bulgaria
| | - Ilian Hristov
- Department of Prosthetic Dental Medicine, Faculty of Dental Medicine, Medical University of Plovdiv, 4000 Plovdiv, Bulgaria
| | - Boyan Dochev
- Department of Mechanics, Faculty of Mechanical Engineering, Technical University of Sofia, Branch Plovdiv, 4000 Plovdiv, Bulgaria
| | - Raycho Raychev
- Department of Mechanics, Faculty of Mechanical Engineering, Technical University of Sofia, Branch Plovdiv, 4000 Plovdiv, Bulgaria
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Tasopoulos T, Vrioni G, Naka O, Diamantatou T, Zoidis P, Tsakris A. Adherence Of Candida Albicans to Five Long-Term Silicone-Based Denture Lining Materials Bonded to CAD-CAM Denture Base. J Prosthodont 2022; 32:292-297. [PMID: 35637596 DOI: 10.1111/jopr.13551] [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: 04/03/2022] [Accepted: 05/21/2022] [Indexed: 11/29/2022] Open
Abstract
PURPOSE Knowledge about quantifying the number as well as the retention and adhesion of Candida albicans blastoconidia to silicone denture liners is limited. Thus, the aim of this in vitro study was to explore the adherence of Candida albicans to the surface of five long-term silicone-based soft denture lining materials, using artificial saliva. MATERIALS & METHODS A total of 50 specimens (10 × 10 × 3 mm) of five long-term resilient liners (Molloplast-B; GC Reline Soft; Elite Soft Relining; Tokuyama Sofreliner S; Ufigel SC), bonded to a computer-aided design and computer-aided manufacturing denture base, were prepared. The specimens were inoculated and incubated in artificial saliva for 1h and 24h with a standardized (2.8 × 106 cfu/ml) Candida albicans suspension. At the end of the incubation period, the specimens were stained with acridine orange and observed, using fluorescence microscopy. RESULTS After 1h and in 24h, Molloplast B demonstrated significantly earlier adherence of Candida albicans cells compared to the other chairside materials (p<0.001 and p<0.001, respectively), where the mean number of cells also increased in the frontal parts. Regarding the rate of Candida albicans proliferation from 1h to 24 hours within the materials, there was an increase in all materials (Molloplast B: p<0.001; GC Reline Soft: p = 0.220; Elite Soft Relining: p = 0.032; Tokuyama Sofreliner S: p = 0.001; Ufigel Sc: p = 0.001). The Ufigel Sc showed a significant 2.5-fold increase at 24h. CONCLUSIONS Long-term silicone denture liners accumulate a significant amount of Candida albicans blastoconidia and their coverage by them increases progressively over time. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Theodoros Tasopoulos
- Prosthodontist, Department of Microbiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Georgia Vrioni
- Professor of Medical Microbiology, Department of Microbiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Olga Naka
- Assistant Professor, Department of Prosthodontics, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Theodora Diamantatou
- Prosthodontist, Resident in Oral Surgery, Department of Prosthodontics, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Panagiotis Zoidis
- Clinical Associate Professor, Division of Prosthodontics, Department of Restorative Dental Sciences College of Dentistry, University of Florida, Gainesville, FL, USA
| | - Athanasios Tsakris
- Professor of Microbiology, Department of Microbiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
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Redfern J, Tosheva L, Malic S, Butcher M, Ramage G, Verran J. The denture microbiome in health and disease: an exploration of a unique community. Lett Appl Microbiol 2022; 75:195-209. [PMID: 35634756 PMCID: PMC9546486 DOI: 10.1111/lam.13751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/21/2022] [Accepted: 05/25/2022] [Indexed: 11/26/2022]
Abstract
The United Nations suggests the global population of denture wearers (an artificial device that acts as a replacement for teeth) is likely to rise significantly by the year 2050. Dentures become colonized by microbial biofilms, the composition of which is influenced by complex factors such as patient’s age and health, and the nature of the denture material. Since colonization (and subsequent biofilm formation) by some micro‐organisms can significantly impact the health of the denture wearer, the study of denture microbiology has long been of interest to researchers. The specific local and systemic health risks of denture plaque are different from those of dental plaque, particularly with respect to the presence of the opportunist pathogen Candida albicans and various other nonoral opportunists. Here, we reflect on advancements in our understanding of the relationship between micro‐organisms, dentures, and the host, and highlight how our growing knowledge of the microbiome, biofilms, and novel antimicrobial technologies may better inform diagnosis, treatment, and prevention of denture‐associated infections, thereby enhancing the quality and longevity of denture wearers.
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Affiliation(s)
- J Redfern
- Department of Natural Sciences, Faculty of Science and Engineering Manchester Metropolitan University UK
| | - L Tosheva
- Department of Natural Sciences, Faculty of Science and Engineering Manchester Metropolitan University UK
| | - S Malic
- Department of Life Sciences, Faculty of Science and Engineering Manchester Metropolitan University UK
| | - M Butcher
- Department of Oral Sciences, Glasgow Dental School, School of Medicine, Dentistry and Nursing University of Glasgow UK
| | - G Ramage
- Department of Oral Sciences, Glasgow Dental School, School of Medicine, Dentistry and Nursing University of Glasgow UK
| | - J Verran
- Department of Life Sciences, Faculty of Science and Engineering Manchester Metropolitan University UK
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Chladek G, Nowak M, Pakieła W, Mertas A. Effect of Candida albicans Suspension on the Mechanical Properties of Denture Base Acrylic Resin. MATERIALS 2022; 15:ma15113841. [PMID: 35683140 PMCID: PMC9182068 DOI: 10.3390/ma15113841] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/10/2022] [Accepted: 05/26/2022] [Indexed: 01/10/2023]
Abstract
Yeast-like fungi such as Candida albicans (C. albicans) are the primary pathogenic microorganism in the oral cavity of denture wearers. The research available so far, conducted according to a protocol based on the exposure of specimens to a C. albicans suspension and their cutting with water cooling, shows that hard polymethyl methacrylate (PMMA) prosthetic materials are not only surface colonized, but also penetrated by microorganisms in a short time. This justifies the hypothesis that exposure to a suspension of the C. albicans strain causes the changes in mechanical properties due to surface colonization and/or penetration of the samples. In the current study, the chosen mechanical properties (flexural strength, flexural modulus, tensile strength, impact strength, ball indentation hardness, and surface Vickers hardness at 300 g load) of the PMMA denture base material Vertex RS (Vertex-Dental, The Netherlands) exposed for 30, 60, and 90 days to a suspension of C. albicans were investigated. The potential penetration of yeast was examined on the fractured surfaces (interior of specimens) to eliminate the risk of the contamination of samples during cutting. There was no influence on the flexural strength, flexural modulus, tensile strength, impact strength, or ball indentation hardness, but a significant decrease in surface hardness was registered. Microscopic observations did not confirm the penetration of C. albicans. On the surface, blastospores and pseudohyphae were observed in crystallized structures and in traces after grinding, which indicates that in clinical conditions, it is not penetration but the deterioration of surface quality, which may lead to the formation of microareas that are difficult to disinfect, causing rapid recolonization.
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Affiliation(s)
- Grzegorz Chladek
- Chair of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, 18a Konarskiego Str., 41-100 Gliwice, Poland;
- Correspondence:
| | - Michał Nowak
- Nova Clinic, 22 Jankego Str., 40-612 Katowice, Poland;
| | - Wojciech Pakieła
- Chair of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, 18a Konarskiego Str., 41-100 Gliwice, Poland;
| | - Anna Mertas
- Department of Microbiology and Immunology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 19 Jordana Str., 41-808 Zabrze, Poland;
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Tokajuk J, Deptuła P, Chmielewska SJ, Skłodowski K, Mierzejewska ŻA, Grądzka-Dahlke M, Tołstoj A, Daniluk T, Paprocka P, Savage PB, Bucki R. Ceragenin CSA-44 as a Means to Control the Formation of the Biofilm on the Surface of Tooth and Composite Fillings. Pathogens 2022; 11:pathogens11050491. [PMID: 35631012 PMCID: PMC9143991 DOI: 10.3390/pathogens11050491] [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: 03/08/2022] [Revised: 04/14/2022] [Accepted: 04/16/2022] [Indexed: 02/04/2023] Open
Abstract
Recurrent oral infections, as manifested by endodontic and periodontal disease, are often caused by Enterococcus faecalis (E. faecalis) and Candida albicans (C. albicans). Here, we assessed the anti-biofilm activity of ceragenin CSA-44 against these microbes growing as a biofilm in the presence of saliva on the surface of human teeth and dental composite (composite filling) subjected to mechanical stresses. Methods: Biofilm mass analysis was performed using crystal violet (CV) staining. The morphology, viscoelastic properties of the biofilm after CSA-44 treatment, and changes in the surface of the composite in response to biofilm presence were determined by AFM microscopy. Results: CSA-44 prevented biofilm formation and reduced the mass of biofilm formed by tested microorganisms on teeth and dental composite. Conclusion: The ability of CSA-44 to prevent the formation and to reduce the presence of established biofilm on tooth and composite filling suggests that it can serve as an agent in the development of new methods of combating oral pathogens and reduce the severity of oral infections.
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Affiliation(s)
- Joanna Tokajuk
- Department of Medical Microbiology and Nanobiomedical Engineering, Medical University of Białystok, Białystok, 15-222 Bialystok, Poland; (J.T.); (P.D.); (S.J.C.); (K.S.); (T.D.)
- Dentistry and Medicine Tokajuk, Żelazna 9/7, 15-297 Bialystok, Poland
| | - Piotr Deptuła
- Department of Medical Microbiology and Nanobiomedical Engineering, Medical University of Białystok, Białystok, 15-222 Bialystok, Poland; (J.T.); (P.D.); (S.J.C.); (K.S.); (T.D.)
| | - Sylwia J Chmielewska
- Department of Medical Microbiology and Nanobiomedical Engineering, Medical University of Białystok, Białystok, 15-222 Bialystok, Poland; (J.T.); (P.D.); (S.J.C.); (K.S.); (T.D.)
| | - Karol Skłodowski
- Department of Medical Microbiology and Nanobiomedical Engineering, Medical University of Białystok, Białystok, 15-222 Bialystok, Poland; (J.T.); (P.D.); (S.J.C.); (K.S.); (T.D.)
| | - Żaneta A Mierzejewska
- Institute of Biomedical Engineering, Faculty of Mechanical Engineering, Białystok University of Technology, Wiejska 45C Street, 15-351 Białystok, Poland;
| | - Małgorzata Grądzka-Dahlke
- Institute of Mechanical Engineering, Faculty of Mechanical Engineering, Białystok University of Technology, Wiejska 45C Street, 15-351 Białystok, Poland; (M.G.-D.); (A.T.)
| | - Adam Tołstoj
- Institute of Mechanical Engineering, Faculty of Mechanical Engineering, Białystok University of Technology, Wiejska 45C Street, 15-351 Białystok, Poland; (M.G.-D.); (A.T.)
| | - Tamara Daniluk
- Department of Medical Microbiology and Nanobiomedical Engineering, Medical University of Białystok, Białystok, 15-222 Bialystok, Poland; (J.T.); (P.D.); (S.J.C.); (K.S.); (T.D.)
| | - Paulina Paprocka
- Institute of Medical Science, Collegium Medicum, Jan Kochanowski University of Kielce, IX Wieków Kielc 19A, 25-317 Kielce, Poland;
| | - Paul B Savage
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA;
| | - Robert Bucki
- Department of Medical Microbiology and Nanobiomedical Engineering, Medical University of Białystok, Białystok, 15-222 Bialystok, Poland; (J.T.); (P.D.); (S.J.C.); (K.S.); (T.D.)
- Correspondence: ; Tel.: +48-85-748-54-83
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10
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Manikandan S, Vinesh E, Selvi DT, Kannan RK, Jayakumar A, Dinakaran J. Prevalence of Candida among denture wearers and nondenture wearers. J Pharm Bioallied Sci 2022; 14:S702-S705. [PMID: 36110628 PMCID: PMC9469301 DOI: 10.4103/jpbs.jpbs_781_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 12/07/2021] [Indexed: 12/03/2022] Open
Abstract
Introduction: A denture wearer is highly prone to develop Candida-associated denture stomatitis (CADS) due to the conversion of the normal oral commensal Candida spp. into a pathogen under favorable conditions. Immuno-compromised status, trauma from the prosthesis, other systemic conditions, and improper maintenance of the dentures by the patient are few of the causative agents which turn the oral balance into an unhealthy and unsuitable foundation for the wearing of the prosthesis. Objective: The objective of this study was to compare subjects wearing complete dentures and nondenture wearers regarding Candida isolates associated with disease and colonization among the different age groups. Methodology: A cross-sectional study was conducted among 60 subjects, 30 wearing complete dentures (Group-A) and 30 nondentures wearers (Group-B), were matched for gender, race, and age. The unstimulated saliva sample was collected and cultured in CHROMagar using standard protocols. Results: The mean value of the candidal colony-forming units with respect to Group A is Candida Albicans 0.36 ± 2.008, Candida krusei 0.27 ± 1.061, P value Group B: C. albicans 0.73 ± 2.196, C. krusei 0.36 ± 1.084. There was a significant relation between denture wearers and heavy growth of C. albicans and C. krusei in saliva culture with a P value of P-0.054 and P-0.036, respectively. Conclusions: These results indicate that denture wearers with oral Candida had a higher prevalence of CADS. Patients with removable prostheses should be informed about the importance of proper prosthesis and personal hygiene since dentures and age-related immunosuppression are both well-known risk factors associated with candidiasis development, the presence of yeast, even in healthy denture wearers, should be considered a risk factor for denture stomatitis that increases with the duration of denture use.
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11
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Mańka-Malara K, Trzaskowski M, Gawlak D. The Influence of Decontamination Procedures on the Surface of Two Polymeric Liners Used in Prosthodontics. Polymers (Basel) 2021; 13:4340. [PMID: 34960891 PMCID: PMC8706804 DOI: 10.3390/polym13244340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/01/2021] [Accepted: 12/08/2021] [Indexed: 11/18/2022] Open
Abstract
Polymeric liners are materials commonly used in prosthodontics to reshape denture surfaces contacting the soft tissues of the oral cavity. The aim of the study was to determine the impact of different cleaning methods on two polymeric materials used in prosthodontics as non-adhesive permanent liners. The material for the research consisted of samples made from Mollosil Plus (Detax, Ettlingen, Germany)-direct polysiloxan liner; and Plastitanium (Pressing Dental, San Marino, Republic of San Marino)-an injection-molded liner. A total of 198 samples were made, 99 of each assessed material. They were exposed to different cleaning methods-a toothbrush, a toothbrush and soap, a toothbrush and toothpaste (BlendaMed, Procter&Gamble, Cincinnati, OH, USA), a toothpaste and denture cleaning paste (Protefix Hygiene Denture Paste, Queisser Pharma, Germany), denture cleansing tablets (Protefix Hygiene Cleaning Tablets, Queisse Pharma, Germany), and a disinfecting spray (Aftermat, Port Jefferson Station, New York City, NY, USA)-for 1 min, 5 min, 10 min, and 15 min. The image acquisition was performed with scanning electron microscopy and samples were analyzed for the homogeneity of their surfaces-the presence of holes, grooves, precipitate, and small and large separating pieces of the material marking departures from this homogeneity. For each type of damage, one point was given. Continuous data from two groups were compared with Mann-Whitney U testing. Due to a small sample size and distribution of variables other than normal, to compare more than two groups, Kruskal-Wallis testing with post hoc analysis (Dunn test with Bonferroni correction) was used. Categorical data were compared with the chi-square test and the Fisher's exact test. The Mollosil Plus material should be decontaminated with the use of a toothbrush or toothbrush with soap, while Plastitanium material should be disinfected. Plastitanium samples are more susceptible to damage during the decontamination procedures than Mollosil Plus.
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Affiliation(s)
- Katarzyna Mańka-Malara
- Department of Prosthodontics, Medical University of Warsaw, 02-097 Warsaw, Poland; (M.T.); (D.G.)
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12
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Tonprasong W, Inokoshi M, Tamura M, Uo M, Wada T, Takahashi R, Hatano K, Shimizubata M, Minakuchi S. Tissue Conditioner Incorporating a Nano-Sized Surface Pre-Reacted Glass-Ionomer (S-PRG) Filler. MATERIALS 2021; 14:ma14216648. [PMID: 34772173 PMCID: PMC8588282 DOI: 10.3390/ma14216648] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/23/2021] [Accepted: 11/01/2021] [Indexed: 11/16/2022]
Abstract
We aimed to evaluate the properties of a novel tissue conditioner containing a surface pre-reacted glass-ionomer (S-PRG) nanofiller. Tissue conditioners containing 0 (control), 2.5, 5, 10, 20, or 30 wt% S-PRG nanofiller or 10 or 20 wt% S-PRG microfiller were prepared. The S-PRG nanofillers and microfillers were observed using scanning electron microscopy. The ion release, acid buffering capacity, detail reproduction, consistency, Shore A0 hardness, surface roughness, and Candida albicans adhesion of the tissue conditioners were examined. The results indicated that the nanofiller particles were smaller and more homogeneous in size than the microfiller particles. In addition, Al, B, F, and Sr ions eluted from S-PRG were generally found to decrease after 1 day. Acid neutralization was confirmed in a concentration-dependent manner. The mechanical properties of tissue conditioners containing S-PRG nanofiller were clinically acceptable according to ISO standard 10139-1:2018, although the surface roughness increased with increasing filler content. Conditioners with 5-30 wt% nanofiller had a sublethal effect on C. albicans and reduced fungal adhesion in vitro. In summary, tissue conditioner containing at least 5 wt% S-PRG nanofiller can reduce C. albicans adhesion and has potential as an alternative soft lining material.
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Affiliation(s)
- Watcharapong Tonprasong
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan; (W.T.); (K.H.); (M.S.); (S.M.)
| | - Masanao Inokoshi
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan; (W.T.); (K.H.); (M.S.); (S.M.)
- Correspondence:
| | - Muneaki Tamura
- Department of Microbiology, Nihon University School of Dentistry, 1-8-13 Kanda Surugadai, Chiyoda, Tokyo 101-8310, Japan;
| | - Motohiro Uo
- Department of Advanced Biomaterials, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan; (M.U.); (T.W.)
| | - Takahiro Wada
- Department of Advanced Biomaterials, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan; (M.U.); (T.W.)
| | - Rena Takahashi
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan;
| | - Keita Hatano
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan; (W.T.); (K.H.); (M.S.); (S.M.)
| | - Makoto Shimizubata
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan; (W.T.); (K.H.); (M.S.); (S.M.)
| | - Shunsuke Minakuchi
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan; (W.T.); (K.H.); (M.S.); (S.M.)
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Kumpanich J, Eiampongpaiboon T, Kanchanavasita W, Chitmongkolsuk S, Puripattanavong J. Effect of Piper betle extract on anti-candidal activity, gelation time, and surface hardness of a short-term soft lining material. Dent Mater J 2020; 39:1016-1021. [PMID: 32727964 DOI: 10.4012/dmj.2019-314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The purpose of this study was to evaluate anti-candidal activity, gelation time, and surface hardness of a short-term soft lining material incorporated with varying concentrations of Piper betle extract (0.25 to 20% w/w). Agar-diffusion assay was conducted to evaluate an inhibitory effect against Candida albicans. The gelation time was assessed and surface hardness was measured at 2 h and 7 days by Shore AO durometer. A soft liner containing at least 5% w/w of P. betle extract was observed the inhibitory effect against C. albicans. An increasing of P. betle concentrations provided larger inhibition zone. Incorporating 5% w/w of P. betle extract into the soft liner did not significantly alter its gelation time and surface hardness (ANOVA; p>0.05). The optimum composition at 5% w/w of P. betle extract can be used as an additive in the soft liner to provide the anti-candidal activity without significantly affect these two main properties.
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Affiliation(s)
| | | | | | | | - Jindaporn Puripattanavong
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University
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14
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Kumar PS. The influence of Azadirachta indica, Melaleuca alternifolia, and Cocos nucifera on Candida albicans strain in tissue conditioner at varying time intervals. J Indian Prosthodont Soc 2020; 20:171-179. [PMID: 32655221 PMCID: PMC7335031 DOI: 10.4103/jips.jips_366_19] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 12/05/2019] [Accepted: 02/29/2020] [Indexed: 11/26/2022] Open
Abstract
Aim: The search for alternative therapies for oral candidiasis is a necessity and the use of medicinal plants seems to be one such promising solutions. Incorporation of phytotherapeutic agents, Azadirachta indica (neem oil), Melaleuca alternifolia oil (tea tree oil), and Cocos nucifera oil (coconut oil), were tested for their efficacy as antifungal agents against Candida albicans. Next, the efficacy of these three antifungal agents when incorporated in a soft relining material at minimum inhibitory concentration (MIC) was evaluated. Settings and Design: Evaluative - In-vitro study design. Materials and Methods: The MIC against C. albicans ATCC 24433 was calculated for M. alternifolia oil, A. indica oil, and C. nucifera oil using the broth microdilution method. Based on the preliminary screening results for MIC, tissue conditioner samples were prepared to evaluate the zone of inhibition (ZOI) and MIC. Antifungal activity of the MIC of the three oils was assessed and compared by measuring the mean ZOI. Antifungal activity of the three oils was assessed using one-way analysis of variance (ANOVA) and post hoc test. Statistical Analysis Used: Oneway ANOVA and post hoc Tukey honestly significant difference test. Results: Inhibition against C. albicans was exhibited when 20% v/v, 25% v/v, and 15% v/v of C. nucifera oil, M. alternifolia oil, and A. indica oil were used, respectively. The results of ANOVA and post hoc test at the end of 48 h and 7 days suggested that all three oils were significantly different from each other (P = 0.000) and A. indica/neem oil with 15% concentration had the best antifungal activity at the end of 48 h and 7 days. Conclusion: The antimycotic activity of M. alternifolia, C. nucifera, and A. indica mixed with the Visco-gel tissue conditioner can be used as an alternative therapy for denture stomatitis.
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Affiliation(s)
- Preeti Satheesh Kumar
- Department of Prosthodontics, The Oxford Dental College and Hospital, Bengaluru, Karnataka, India
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Chladek G, Pakieła K, Pakieła W, Żmudzki J, Adamiak M, Krawczyk C. Effect of Antibacterial Silver-Releasing Filler on the Physicochemical Properties of Poly(Methyl Methacrylate) Denture Base Material. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E4146. [PMID: 31835665 PMCID: PMC6947518 DOI: 10.3390/ma12244146] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/02/2019] [Accepted: 12/09/2019] [Indexed: 12/24/2022]
Abstract
Colonization of polymeric dental prosthetic materials by yeast-like fungi and the association of these microorganisms with complications occurring during prosthetic treatment are important clinical problems. In previously presented research, submicron inorganic particles of silver sodium hydrogen zirconium phosphate (S-P) were introduced into poly(methyl methacrylate) (PMMA) denture base material which allowed for obtaining the antimicrobial effect during a 90 day experiment. The aim of the present study was to investigate the flexural strength, impact strength, hardness, wear resistance, sorption, and solubility during three months of storage in distilled water. With increasing S-P concentration after 2 days of conditioning in distilled water, reduced values of flexural strength (107-72 MPa), impact strength (18.4-5.5 MPa) as well as enhanced solubility (0.95-1.49 µg/mm3) were registered, but they were at acceptable levels, and the sorption was stable. Favorable changes included increased hardness (198-238 MPa), flexural modulus (2.9-3.3 GPa), and decreased volume loss during wear test (2.9-0.2 mm3). The percentage changes of the analyzed properties during the 90 days of storage in distilled water were similar for all materials.
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Affiliation(s)
- Grzegorz Chladek
- Faculty of Mechanical Engineering, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland; (K.P.); (W.P.); (J.Ż.); (M.A.)
| | - Katarzyna Pakieła
- Faculty of Mechanical Engineering, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland; (K.P.); (W.P.); (J.Ż.); (M.A.)
| | - Wojciech Pakieła
- Faculty of Mechanical Engineering, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland; (K.P.); (W.P.); (J.Ż.); (M.A.)
| | - Jarosław Żmudzki
- Faculty of Mechanical Engineering, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland; (K.P.); (W.P.); (J.Ż.); (M.A.)
| | - Marcin Adamiak
- Faculty of Mechanical Engineering, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland; (K.P.); (W.P.); (J.Ż.); (M.A.)
| | - Cezary Krawczyk
- Department of Dental Technology, Medical College, ul. 3 Maja 63, 41-800 Zabrze, Poland;
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Iwawaki Y, Matsuda T, Kurahashi K, Honda T, Goto T, Ichikawa T. Effect of water temperature during ultrasonic denture cleaning. J Oral Sci 2019; 61:140-145. [PMID: 30918210 DOI: 10.2334/josnusd.17-0387] [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: 11/01/2022]
Abstract
Denture plaque is a biofilm composed of various microorganisms aggregated with saliva. Various denture cleansers and cleaning apparatuses have been developed and studied. However, the optimum water temperature for denture cleaning is unknown. Therefore, the present study investigated the effects of water temperature during ultrasonic denture cleaning. In vitro, resin disks with artificial Candida albicans biofilm were pressed onto Candida GE media after ultrasonic cleaning with water at different temperatures for 5 min. The media were subsequently cultured at 37°C for 24 h. The colonies formed were observed and colony areas were quantified using ImageJ software (US National Institutes of Health, Bethesda, MD, USA). In situ, the bacterial count and degree of cleanliness on the tissue surface of maxillary dentures were measured before and after ultrasonic cleaning with water at different temperatures for 5 min. Changes in bacterial counts and cleanliness were calculated for each temperature. The ratio of the area occupied by bacterial colonies in vitro and reduction rates in situ after cleaning with warm water were markedly less than those observed after cleaning with cold water. Therefore, ultrasonic denture cleaning with warm water is more effective.
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Affiliation(s)
- Yuki Iwawaki
- Department of Oral & Maxillofacial Prosthodontics, Tokushima University Graduate School of Biomedical Sciences
| | - Takashi Matsuda
- Department of Oral & Maxillofacial Prosthodontics, Tokushima University Graduate School of Biomedical Sciences
| | - Kosuke Kurahashi
- Department of Oral & Maxillofacial Prosthodontics, Tokushima University Graduate School of Biomedical Sciences
| | - Tsuyoshi Honda
- Department of Oral Care and Clinical Education, Tokushima University Hospital
| | - Takaharu Goto
- Department of Oral & Maxillofacial Prosthodontics, Tokushima University Graduate School of Biomedical Sciences
| | - Tetsuo Ichikawa
- Department of Oral & Maxillofacial Prosthodontics, Tokushima University Graduate School of Biomedical Sciences
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17
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Retentive characteristics of individual and prefabricated polyvinylsiloxane overdenture attachments: alternative treatment options for geriatric patients. Clin Oral Investig 2018; 23:1425-1434. [PMID: 30032470 DOI: 10.1007/s00784-018-2568-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 07/12/2018] [Indexed: 10/28/2022]
Abstract
OBJECTIVES Stud attachments are often too adhesive and too susceptible to damage for use in geriatric patients, especially when implants are angulated. This study aimed to evaluate alternative anchoring systems comprising individual and prefabricated polyvinylsiloxane (PVS) attachments. MATERIALS AND METHODS A total of 182 specimens with individual PVS (IPVS) attachments (Shore hardness [SH] 25, SH50, SH65], prefabricated PVS (PPVS) attachments (SM green, yellow, and red), and Locator attachments (LR blue) were fabricated (n = 7 per group). Retention force was measured using the following parameters: insertion/removal (100, 200, 500, 1000, and 5000 cycles), thermal undulation (10,000 cycles at 5-55 °C; one implant per specimen), implant angulation (0°, 5°, and 10° convergence and divergence; two implants per specimen), and artificial saliva. RESULTS Insertion/removal and thermal undulation caused no changes in retention force in SM green and IPVS subgroups; conversely, LR blue, SM red, and SM yellow attachments exhibited significant decreases in retention force of up to 66% (all P ≤ 0.001). Implant angulation produced relevant changes in retention force only in LR blue attachments. Artificial saliva caused a general decrease in retention force. CONCLUSIONS Retention force of low-retentive PVS attachments proved to be comparatively immune to dislocation and thermal undulation, as well as to implant angulation up to 10°. CLINICAL RELEVANCE Low-retentive PVS attachments could be a treatment option if reduced denture retention is required and/or if angulated implants are in place. Clinical studies are necessary to evaluate the materials' durability under oral conditions.
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Takakusaki K, Fueki K, Tsutsumi C, Tsutsumi Y, Iwasaki N, Hanawa T, Takahashi H, Takakuda K, Wakabayashi N. Effect of incorporation of surface pre-reacted glass ionomer filler in tissue conditioner on the inhibition of Candida albicans adhesion. Dent Mater J 2018; 37:453-459. [PMID: 29415971 DOI: 10.4012/dmj.2017-171] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We investigated the effects of incorporation of surface pre-reacted glass ionomer (S-PRG) filler in tissue conditioner (TC) on Candida albicans adhesion. We prepared specimens containing 0, 5, 10, or 20 wt% of S-PRG filler, and measured the amount of C. albicans on the surface using a colony forming unit (CFU) assay and scanning electron microscopic images. In addition, we measured the consistency, penetration depth, and surface roughness (Ra). CFU values for 10 and 20 wt% were significantly lower than that for the control (p<0.05). Hyphal density on the surface was greater in the control. The 10 and 20 wt% specimens showed significantly higher consistency and Ra, lower penetration depth ratio than control (p<0.05). These results suggest that incorporation of S-PRG filler may reduce C. albicans adhesion onto TC surface; however, the optimal amount of filler is dictated by the influence of filler incorporation on mechanical and surface characters of TC.
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Affiliation(s)
- Kensuke Takakusaki
- Removable Partial Prosthodontics, Tokyo Medical and Dental University (TMDU)
| | - Kenji Fueki
- Removable Partial Prosthodontics, Tokyo Medical and Dental University (TMDU)
| | - Chiaki Tsutsumi
- Department of Oral Medicine and Stomatology, Tsurumi University School of Dental Medicine
| | - Yusuke Tsutsumi
- Department of Metallic Biomaterials, Institute of Biomaterials and Bioengineering, TMDU
| | - Naohiko Iwasaki
- Oral Biomaterials Engineering, Graduate School of Medical and Dental Sciences, TMDU
| | - Takao Hanawa
- Department of Metallic Biomaterials, Institute of Biomaterials and Bioengineering, TMDU
| | - Hidekazu Takahashi
- Oral Biomaterials Engineering, Graduate School of Medical and Dental Sciences, TMDU
| | - Kazuo Takakuda
- Medical and Dental Device Technology Incubation Center, Institute of Biomaterials and Bioengineering, TMDU
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Rathi A, Banerjee R, Radke U, Lahoti S, Sahni S. Knowledge and attitude about relining of complete dentures in clinical practice: A cross-sectional study. J Indian Prosthodont Soc 2018; 18:174-180. [PMID: 29692572 PMCID: PMC5903182 DOI: 10.4103/jips.jips_302_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 02/23/2018] [Indexed: 11/04/2022] Open
Abstract
Background Residual ridge resorption is crucial sequelae of tooth loss. Complete dentures are the most common way of rehabilitating edentulous patients. However, with continuing residual ridge resorption, dentures tend to become loose and unstable causing discomfort, chewing disability, and speech problems. Denture relining is an economical means of improving a denture's stability and retention. An understanding of the clinical indications and limitations of these materials and procedures is crucial for clinical success. Aim and Objective The purpose of this survey was to assess knowledge, attitude, and practice in relining dentures among dental practitioners. Materials and Methods The cross-sectional survey was conducted using a validated questionnaire on 200 (n = 200) dental practitioners in Nagpur city, Maharashtra. Data analysis was done using proportion test with SPSS EPI INFO software. Results Although all 200 practitioners were aware of the relining procedure and were routinely carrying out the procedure in their dental clinics, 50% of the practitioners were unaware of the correct relining step by step procedure and were also not sure about the antimicrobial properties of the relining material available in the market. Conclusion Awareness and scientific knowledge about the relining materials and procedure should be enhanced within general dental practitioners through CDE program and workshops. Steps should be taken to include relining procedure as a part of undergraduate clinical curriculum as well as internship program.
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Affiliation(s)
- Akhil Rathi
- Department of Prosthodontics, VSPM DCRC, Nagpur, Maharashtra, India
| | | | - Usha Radke
- Department of Prosthodontics, VSPM DCRC, Nagpur, Maharashtra, India
| | - Seema Lahoti
- Department of Orthodontics, RKDF Dental College, Bhopal, Madhya Pradesh, India
| | - Shraddha Sahni
- Department of Prosthodontics, VSPM DCRC, Nagpur, Maharashtra, India
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Jabłońska-Stencel E, Pakieła W, Mertas A, Bobela E, Kasperski J, Chladek G. Effect of Silver-Emitting Filler on Antimicrobial and Mechanical Properties of Soft Denture Lining Material. MATERIALS 2018; 11:ma11020318. [PMID: 29470441 PMCID: PMC5849015 DOI: 10.3390/ma11020318] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 02/14/2018] [Accepted: 02/18/2018] [Indexed: 12/17/2022]
Abstract
Colonization of silicone-based soft lining materials by pathogenic yeast-type fungi is a common problem associated with the use of dentures. In this study, silver sodium hydrogen zirconium phosphate (SSHZP) was introduced into polydimethylsiloxane-based material as an antimicrobial filler at concentrations of 0.25, 0.5, 1, 2, 4, 6, 8, 10, 12, and 14% (w/w). The in vitro antimicrobial efficacy was investigated. Candida albicans was used as a characteristic representative of pathogenic oral microflora. Staphylococcus aureus and Escherichia coli were used as the typical Gram-positive and Gram-negative bacterial strains, respectively. The effect of filler addition on the Shore A hardness, tensile strength, tensile bond strength, sorption, and solubility was investigated. An increase in the filler concentration resulted in an increase in hardness, sorption, and solubility, and for the highest concentration, a decrease in bond strength. The favorable combination of antimicrobial efficacy with other properties was achieved at filler concentrations ranging from 2% to 10%. These composites exhibited mechanical properties similar to the material without the antimicrobial filler and enhanced in vitro antimicrobial efficiency.
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Affiliation(s)
| | - Wojciech Pakieła
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland.
| | - Anna Mertas
- Chair and Department of Microbiology and Immunology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia in Katowice, ul. Jordana 19, 41-808 Zabrze, Poland.
| | - Elżbieta Bobela
- Chair and Department of Microbiology and Immunology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia in Katowice, ul. Jordana 19, 41-808 Zabrze, Poland.
| | - Jacek Kasperski
- Department of Prosthetic Dentistry, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, pl. Akademicki 17, 41-902 Bytom, Poland.
| | - Grzegorz Chladek
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland.
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21
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Lee HL, Wang RS, Hsu YC, Chuang CC, Chan HR, Chiu HC, Wang YB, Chen KY, Fu E. Antifungal effect of tissue conditioners containing poly(acryloyloxyethyltrimethyl ammonium chloride)-grafted chitosan on Candida albicans growth in vitro. J Dent Sci 2018; 13:160-166. [PMID: 30895112 PMCID: PMC6388835 DOI: 10.1016/j.jds.2017.06.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 06/28/2017] [Indexed: 11/30/2022] Open
Abstract
Background/purpose Denture stomatitis is a pathological condition affecting the mucosa underneath ill-fitting dentures, and Candida albicans is considered its main etiologic factor. Tissue conditioners are temporary lining materials often applied to dentures to treat inflamed tissues. However, tissue conditioners do not exert antifungal activity, and the soft surface texture harbors C. albicans easily. The aim of this study was to examine the antifungal activity of tissue conditioners modified with chitosan (CS) or a quaternized chitosan (QCS), which was synthesized by grafting 2-[(acryloyloxy)ethyl] trimethyl ammonium chloride onto CS. Materials and methods Tissue conditioners containing varying weight percentages of CS or QCS were prepared as experimental discs 10 mm in diameter and 1 mm in thickness. Samples were co-cultured with C. albicans and the number of colony forming units was recorded. Other evaluations included cell toxicity and tensile bond strength to the resin denture base. Results It was found significantly fewer fungal colonies in tissue conditioners modified with CS or QCS, and none when the weight percentage of QCS exceeded 5%. CS and QCS did not affect the viability of human gingival epithelium cells or fibroblasts, and tensile bond strength did not differ between control and modified tissue conditioners. Conclusion This study provides a foundation for the development of QCS as a novel and safe antifungal agent applied to tissue conditioners in clinical practice.
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Affiliation(s)
- Hsin-Lin Lee
- Department of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Ren-Syue Wang
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin, Taiwan
| | - Yung-Chuang Hsu
- Department of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Chuan-Chung Chuang
- Department of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Hui-Rong Chan
- Department of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Hsien-Chung Chiu
- Department of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Yi-Bing Wang
- Department of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Kuo-Yu Chen
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin, Taiwan
| | - Earl Fu
- Department of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
- Department of Dentistry, Taipei Tzu Chi General Hospital, Xindian, Taipei, Taiwan
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22
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Baygar T, Ugur A, Sarac N, Balci U, Ergun G. Functional denture soft liner with antimicrobial and antibiofilm properties. J Dent Sci 2017; 13:213-219. [PMID: 30895123 PMCID: PMC6388823 DOI: 10.1016/j.jds.2017.10.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 10/13/2017] [Indexed: 11/25/2022] Open
Abstract
Background/purpose Denture soft liners, especially used for elders who have poor disinfection habits, provide a favourable environment for accumulation and colonization of microorganisms. This in vitro study is aimed to investigate the effectiveness of natural carvacrol incorporation into soft lining material on the inhibition of oral pathogens. Materials and methods Antimicrobial susceptibility of carvacrol was primarily determined by disc diffusion method. Soft lining material was prepared as recommended by the manufacturer and 10 μL carvacrol was added aseptically to the soft liner discs. Inhibition zones for the control discs without carvacrol (C) and carvacrol-incorporated discs (CL) were determined by disc diffusion method. The biofilm inhibition percentages of carvacrol on soft liner was determined by MTT assay and also observed by Scanning Electron Microscopy (SEM). Results Carvacrol displayed great antimicrobial activity for yeast, Gram-negative and Gram-positive strains. The highest inhibition zone of carvacrol (41.33 ± 1.53 mm) was measured for Bacillus subtilis strain which is followed by Candida albicans and Streptococcus sanguis (34.00 ± 1.73 mm and 32.33 ± 0.58 mm, respectively). The inhibition zones were also similar for soft liner discs with carvacrol, with the highest inhibition zones against B. subtilis, Streptococcus mutans and C. albicans (43.67 ± 0.58 mm, 40.33 ± 0.58 mm and 38.33 ± 1.15 mm, respectively). Incorporation of carvacrol into the soft liner decreased (98.03 ± 0.2%) of the biofilm formation for C. albicans. Conclusion Carvacrol-incorporation obviously decreased the colonization and plaque formation of oral pathogens, especially C. albicans accumulation. Carvacrol may be useful as a promising agent for antibacterial and antifungal management for denture soft lining materials.
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Affiliation(s)
- Tuba Baygar
- Material Research Laboratory, Research Laboratories Center, Mugla Sitki Kocman University, Mugla, Turkey
| | - Aysel Ugur
- Section of Medical Microbiology, Department of Basic Sciences, Faculty of Dentistry, Gazi University, Ankara, Turkey
| | - Nurdan Sarac
- Department of Biology, Faculty of Science, Mugla Sitki Kocman University, Mugla, Turkey
| | - Uydu Balci
- Department of Biology, Faculty of Science, Mugla Sitki Kocman University, Mugla, Turkey
| | - Gulfem Ergun
- Department of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey
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Inhibitory effect of probiotic lactobacilli supernatants on single and mixed non-albicans Candida species biofilm. Arch Oral Biol 2017; 85:40-45. [PMID: 29031236 DOI: 10.1016/j.archoralbio.2017.10.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 10/02/2017] [Accepted: 10/03/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVES Oral candidiasis is one of the most common human fungal infections. While most cases of the Candida species isolated from the oral cavity are Candida albicans, a large number of candidiasis is attributed to non-albicans Candida species. In this study, we aim to evaluate the in vitro inhibition of supernatants of Lactobacillus gasseri and Lactobacillus rhamnosus on the single and mixed species biofilm of non-albicans Candida species, including Candida tropicalis, Candida krusei and Candida parapsilosis. DESIGN Cell-free supernatants of Lactobacillus gasseri and Lactobacillus rhamnosus were prepared. Single and mixed non-albicans Candida species biofilm were formed in the 96-well microplate and on the surfaces of medical grade silicone. Biomass and cell viability were tested with crystal violet and cell counting kit-8. In order to examine the ability of the supernatant to disrupt pre-formed biofilm, supernatant was added to 24h-old biofilms. Biofilm architecture on silicone was investigated by scanning electron microscopy and confocal laser scanning microscopy was used to examine live/dead organisms within biofilm. RESULTS Single and mixed species biofilms and cell viability of non-albicans Candida biofilms were inhibited by probiotic lactobacilli supernatants. Matrue biofilm formation was disrupted by lactobacilli supernatants added at 24h after biofilm initiation. Examination with confocal laser scanning microscopy and scanning electron microscopy confirmed that lactobacilli supernatants inhibited the mixed biofilms and damaged the cells. CONCLUSIONS Our data elucidate the inhibitory activity of probiotic lactobacilli on non-albicans Candida biofilm, so as to support their utility as an adjunctive therapeutic mode against oral candida infections.
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Gauch LMR, Pedrosa SS, Silveira-Gomes F, Esteves RA, Marques-da-Silva SH. Isolation of Candida spp. from denture-related stomatitis in Pará, Brazil. Braz J Microbiol 2017; 49:148-151. [PMID: 29054393 PMCID: PMC5790581 DOI: 10.1016/j.bjm.2017.07.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 05/02/2016] [Indexed: 11/05/2022] Open
Abstract
The aim of this study was to isolate and identify Candida species from the oral cavity of denture wearers with denture-related stomatitis who were attended at the University Federal of Pará (Belém City, Pará State, Brazil). A total of 36 denture wearers with denture-related stomatitis were included, and type I (50%), type II (33%) and type III (17%) stomatitis were observed. Candida spp. were isolated from 89% of the cases and included five different Candida species. C. albicans was the most frequently recovered species (78% of the cases), followed by C. famata and C. tropicalis. We observed a significant association between Candida species isolation and unsatisfactory denture condition (p = 0.0017). Our results demonstrated the highly frequency of Candida species isolation in denture wearers with denture-related stomatitis and showed the relationship between these species and poor denture maintenance.
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Affiliation(s)
- Lurdete Maria Rocha Gauch
- Federal University of Pará, Science Health Institute Belém, Odontology College, Belém, PA, Brazil; Federal University of Pará, Science Biologic Institute, Postgraduate Program in Biology of Infectious and Parasitic Agents, Belém, PA, Brazil.
| | - Simone Soares Pedrosa
- Federal University of Pará, Science Health Institute Belém, Odontology College, Belém, PA, Brazil
| | - Fabíola Silveira-Gomes
- Federal University of Pará, Science Biologic Institute, Postgraduate Program in Biology of Infectious and Parasitic Agents, Belém, PA, Brazil
| | - Renata Antunes Esteves
- Federal University of Pará, Science Health Institute Belém, Odontology College, Belém, PA, Brazil
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Vankadara SK, Hallikerimath RB, Patil V, Bhat K, Doddamani MH. Effect of Melaleuca alternifolia Mixed with Tissue Conditioners in Varying Doses on Colonization and Inhibition of Candida albicans: An In Vitro Study. Contemp Clin Dent 2017; 8:446-450. [PMID: 29042733 PMCID: PMC5644005 DOI: 10.4103/ccd.ccd_542_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
AIMS AND OBJECTIVES The study was conducted to evaluate the Colonization & Inhibition of Candida albicans in selected commercially available denture lining materials material by mixing them with varying concentrations and doses of tea tree oil. MATERIALS AND METHODS Five test discs of 10mm diameter and 1.5mm thickness were prepared using commercially available soft denture lining materials (Viscogel and GC-soft). Tea tree oil of varying concentrations (10%, 20%, 30%, and 40%) and doses (0.5 ml, 1.0 ml, 1.5 ml, 2.0 ml) were added during manipulation. Test discs kept in sterile artificial saliva were inoculated with Candida albicans (ATCC-2091 strain) and incubated for 6 weeks. These discs were fixed, dehydrated air dried and stained using 0.03% acridine orange stain and observed under Fluorescent microscope to count the colonies on the surface of each disc to evaluate the colonization. To evaluate inhibition, test discs were placed on the top of Sabouraud's dextrose agar inoculated with Candida albicans (ATCC-2091 strain). After incubation at 370C for 48 hours, the zone of Inhibition formed around the samples was measured. RESULTS The GC soft liner had higher mean colonization and lesser zone of inhibition of C.albicans when compared to Visco-gel soft liner (P < 0.001) and highest zone of inhibition observed with 2 ml volume and 40% vol/vol concentration of melaleuca alternifolia (P < 0.05). INTERPRETATION AND CONCLUSION By the addition of Tea Tree oil, Viscogel had good acquired good antifungal properties than GC-soft lining materials.
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Affiliation(s)
- Siva Kumar Vankadara
- Department of Prosthodontics and Crown and Bridge, SJM Dental College and Hospital, Chitradurga, India
| | - Rajendra Basavaraj Hallikerimath
- Department of Prosthodontics and Crown and Bridge, Maratha Mandal's N. G. Halgekar Institute of Dental Sciences and Research Centre, Belgaum, Karnataka, India
| | - Viraj Patil
- Department of Prosthodontics and Crown and Bridge, Maratha Mandal's N. G. Halgekar Institute of Dental Sciences and Research Centre, Belgaum, Karnataka, India
| | - Kishore Bhat
- Department of Microbiology and Immunology, Maratha Mandal's N. G. Halgekar Institute of Dental Sciences and Research Centre, Belgaum, Karnataka, India
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Selecman A, Ahuja S. A combination technique for relining removable prostheses. Br Dent J 2017; 222:841-843. [DOI: 10.1038/sj.bdj.2017.490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/20/2017] [Indexed: 11/09/2022]
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Altinci P, Mutluay M, Söderling E, Tezvergil-Mutluay A. Antimicrobial efficacy and mechanical properties of BAC-modified hard and soft denture liners. Odontology 2017; 106:83-89. [PMID: 28321584 DOI: 10.1007/s10266-017-0303-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 02/09/2017] [Indexed: 11/30/2022]
Abstract
This study investigated the antimicrobial efficacy and mechanical strength of hard and soft denture liners modified with benzalkonium chloride (BAC). The specimens (1 mm thickness, 8 mm diameter) were prepared by mixing 0.5, 1, 2 and 5 wt% BAC with soft (Sofreliner Medium, Tokuyama) and hard (Rebase II, Tokuyama) denture liners (n = 5/group). BAC was not added to the controls. Candida albicans ATCC 28366 (A 550 = 0.5) and Streptococcus mutans Ingbritt suspensions (A 550 = 0.35) were pipetted onto the specimens, and incubated for 4 h. The viable cells were collected, and determined by plate-culturing (CFU). The tests were repeated after the specimens were soaked in distilled water for 7 days. The mechanical strengths were evaluated by tear and 4-point flexural strength tests for soft and hard liners, respectively. The data were analyzed with ANOVA and Tukey's HSD tests at p = 0.05. C. albicans viability was lost in all groups of BAC-modified soft liners (p < 0.001), and S. mutans viability was reduced (p < 0.01), except of soaked BAC 0.5 wt% group (p > 0.05). For the hard liner, BAC 5 wt% killed the C. albicans and S. mutans cells both before and after soaked in water (p < 0.001). BAC 2 wt% showed comparable tear strength with the soft liner control (p > 0.05). BAC did not reduce the flexural strength of the hard liner (p > 0.05), except of BAC 5 wt% group (p < 0.01). BAC can be a promising agent reducing the C. albicans and S. mutans viability on the soft and hard denture liner surfaces.
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Affiliation(s)
- Pinar Altinci
- Finnish Doctoral Program in Oral Sciences, Turku, Finland. .,Department of Restorative Dentistry and Cariology, Institute of Dentistry, University of Turku, Lemminkaisenkatu 2, 20520, Turku, Finland.
| | - Murat Mutluay
- Department of Restorative Dentistry and Cariology, Institute of Dentistry, University of Turku, Lemminkaisenkatu 2, 20520, Turku, Finland.,TYKS University Hospital, University of Turku, Turku, Finland
| | - Eva Söderling
- Department of Restorative Dentistry and Cariology, Institute of Dentistry, University of Turku, Lemminkaisenkatu 2, 20520, Turku, Finland
| | - Arzu Tezvergil-Mutluay
- Department of Restorative Dentistry and Cariology, Institute of Dentistry, University of Turku, Lemminkaisenkatu 2, 20520, Turku, Finland.,TYKS University Hospital, University of Turku, Turku, Finland
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Balouiri M, Bouhdid S, Sadiki M, Ouedrhiri W, Barkai H, El Farricha O, Ibnsouda SK, Harki EH. Effect of preconditioning cobalt and nickel based dental alloys with Bacillus sp. extract on their surface physicochemical properties and theoretical prediction of Candida albicans adhesion. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:111-117. [PMID: 27987667 DOI: 10.1016/j.msec.2016.09.083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 08/14/2016] [Accepted: 09/29/2016] [Indexed: 10/20/2022]
Abstract
Biofilm formation on dental biomaterials is implicated in various oral health problems. Thus the challenge is to prevent the formation of this consortium of microorganisms using a safe approach such as antimicrobial and anti-adhesive natural products. Indeed, in the present study, the effects of an antifungal extract of Bacillus sp., isolated from plant rhizosphere, on the surface physicochemical properties of cobalt and nickel based dental alloys were studied using the contact angle measurements. Furthermore, in order to predict the adhesion of Candida albicans to the treated and untreated dental alloys, the total free energy of adhesion was calculated based on the extended Derjaguin-Landau-Verwey-Overbeek approach. Results showed hydrophobic and weak electron-donor and electron-acceptor characteristics of both untreated dental alloys. After treatment with the antifungal extract, the surface free energy of both dental alloys was influenced significantly, mostly for cobalt based alloy. In fact, treated cobalt based alloy became hydrophilic and predominantly electron donating. Those effects were time-dependent. Consequently, the total free energy of adhesion of C. albicans to this alloy became unfavorable after treatment with the investigated microbial extract. A linear relationship between the electron-donor property and the total free energy of adhesion has been found for both dental alloys. Also, a linear relationship has been found between this latter and the hydrophobicity for the cobalt based alloy. However, the exposure of nickel based alloy to the antifungal extract failed to produce the same effect.
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Affiliation(s)
- Mounyr Balouiri
- Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdellah, BP 2202, 30007 Fez, Morocco.
| | - Samira Bouhdid
- Faculté des Sciences de Tétouan, Université Abdelmalek Essaadi, Avenue de Sebta, Mhannech II, 93002 Tétouan, Morocco
| | - Moulay Sadiki
- Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdellah, BP 2202, 30007 Fez, Morocco
| | - Wessal Ouedrhiri
- Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdellah, BP 2202, 30007 Fez, Morocco
| | - Hassan Barkai
- Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdellah, BP 2202, 30007 Fez, Morocco
| | - Omar El Farricha
- Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdellah, BP 2202, 30007 Fez, Morocco
| | - Saad Koraichi Ibnsouda
- Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdellah, BP 2202, 30007 Fez, Morocco; Cité de l'innovation, Université Sidi Mohamed Ben Abdellah, BP 2626, 30007 Fez, Morocco
| | - El Houssaine Harki
- Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdellah, BP 2202, 30007 Fez, Morocco
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Cakan U, Kara O, Kara HB. Effects of various denture cleansers on surface roughness of hard permanent reline resins. Dent Mater J 2017; 34:246-51. [PMID: 25740306 DOI: 10.4012/dmj.2014-194] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this study was to investigate the influence of denture cleansers on surface roughness (Ra, µm) of two hard permanent reline resins and a conventional acrylic denture base resin. Fifty specimens of each material, measuring 10 mm×2 mm were randomly divided into 1 control and 4 experimental subgroups (n=10). Surface roughness values were measured using profilometer before and after immersion in distilled water and in 4 different denture cleansers for 8 h for 140 days. The Kruskal Wallis and Wilcoxon Signed Ranks tests were used for comparison among groups with a significance level of α=0.05. Immersion in denture cleansers significantly increased the surface roughness of reline resins and the difference among the cleansers was statistically significant (p=0.059). Denture cleansers can cause significant surface roughness alterations on hard permanent reline resins and denture base resin where their effect may differ according to the selected resin material.
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Affiliation(s)
- Umut Cakan
- Department of Prosthodontics, Faculty of Dentistry, Istanbul Medipol University
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Krishnamurthy S, Hallikerimath RB. An In-vitro Evaluation of Retention, Colonization and Penetration of Commonly Used Denture Lining Materials By Candida albicans. J Clin Diagn Res 2016; 10:ZC84-ZC88. [PMID: 27891466 DOI: 10.7860/jcdr/2016/20892.8665] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 07/13/2016] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Colonization of the surface by Candida albicans and related Candida species is one of the major concerns of denture lining materials. AIM We evaluated retention, colonization and penetration of the four denture lining materials namely Molloplast B, Permaflex, GC Soft Liner and Ufi Gel Hard C by Candida albicans. MATERIAL AND METHODS a) Evaluation of retention: Five test discs of each material with smooth surface on one side and rough on the other were prepared and surface roughness (Ra) was measured with profilometer. Retention of C. albicans to discs was monitored after one hour of incubation (37°C) with standardized (2.8 x 106 cfu/ml) washed cell suspension. Discs were stained with acridine orange and attached cells were counted using inverted microscope; b) Evaluation of colonization and penetration: Eight test discs of each material in sterile artificial saliva, were inoculated with C. albicans and incubated for six weeks. Two sections were cut across each test disc to provide three replicate samples. Candida cells on cut disc sections were fixed, dehydrated, air dried and viewed via fluorescence microscope; c) Evaluation of antifungal action: Two test discs of each material were placed onto diagnostic sensitivity testing the agar plate. After incubation at 37°C for 24 hours, the zone of inhibition formed around the samples were measured at four places, and the mean calculated. RESULTS a) All rough surfaces showed higher retention of C. albicans than smooth surfaces. Among the smooth surfaces, Molloplast B and GC Soft Liner showed highest and lowest retention of C. albicans respectively (p=0.0090). Among the rough surfaces, the variation in the retention of C. albicans was not statistically significant; b) Penetration of C. albicans was observed through all three sections of the test discs of each material. There was no statistically significant difference among the test materials; c) Molloplast B and Permaflex produced a mean zone of inhibition of 16.9±4.8mm and 14.80±3.8mm respectively. CONCLUSION a) Smoother surfaces retain fewer cells than rough surfaces; b) Denture lining materials permit infiltration of Candida through their structure; c) Denture lining materials have insignificant anti-fungal properties.
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Affiliation(s)
- Sushma Krishnamurthy
- Senior Lecturer, Deparment of Prosthodontics and Crown and Bridge, Maratha Mandal's NGH Institute of Dental Sciences and Research Centre , Belgaum, Karnataka, India
| | - Rajendra B Hallikerimath
- Professor and Head, Deparment of Prosthodontics and Crown and Bridge, Maratha Mandal's NGH Institute of Dental Sciences and Research Centre , Belgaum, Karnataka, India
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The influence of cyclic stress on surface properties of soft liners. Odontology 2016; 105:214-221. [PMID: 27456685 DOI: 10.1007/s10266-016-0260-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 06/20/2016] [Indexed: 10/21/2022]
Abstract
Soft polymers used under tissue-supported prostheses have limited service life because of surface degradation. PURPOSE This paper evaluates the changes in surface properties and softness of soft relining materials after cyclic loading in water. MATERIALS AND METHODS 3 polysiloxane (Silagum AM Comfort, Molloplast B, Mollosil Plus) and 2 acrylic-based (Vertex Soft, Astron LC Soft) proprietary soft relining materials and a vinyl polysiloxane (Imprint 2 Garant) as the reference impression material evaluated. A stainless steel block for detail reproduction was used on the basis of the apparatus recommended by the ISO 4823:1992 test method for preparing a standardized surface. A control group from each material was only subjected to water immersion. Non-destructive cyclic loading was carried out with a strain of 16.6 % and a frequency of 1.6 Hz 200,000 times in distilled water at 37 °C. The specimens were then duplicated and compared with the controls using roughness measurements, detail reproduction and Scanning Electron Microscope. Shore A hardness values before and after cycling were also measured. RESULTS After degradation in the form of mechanical cycling in water, loss of substance and loss of surface detail was observed. Surface properties and Shore A hardness values of acrylic-based soft liners changed significantly (p < 0.05). CONCLUSIONS The chemical composition of the soft relining materials seemed to affect their potential of preserving the surface texture and softness after mechanical cycling. Mechanical cycling influences the surface degradation process leading to changes of the surface texture. Polysiloxane-based materials preserved their softness, surface texture and surface smoothness better under cyclic loading compared to acrylic resin -based plasticized materials.
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Chladek G, Basa K, Mertas A, Pakieła W, Żmudzki J, Bobela E, Król W. Effect of Storage in Distilled Water for Three Months on the Antimicrobial Properties of Poly(methyl methacrylate) Denture Base Material Doped with Inorganic Filler. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E328. [PMID: 28773451 PMCID: PMC5503091 DOI: 10.3390/ma9050328] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 04/26/2016] [Accepted: 04/27/2016] [Indexed: 11/16/2022]
Abstract
The colonization of poly(methyl methacrylate) (PMMA) denture base materials by pathogenic microorganisms is a major problem associated with the use of prostheses, and the incorporation of antimicrobial fillers is a method of improving the antimicrobial properties of these materials. Numerous studies have demonstrated the initial in vitro antimicrobial effectiveness of this type of material; however, reports demonstrating the stability of these fillers over longer periods are not available. In this study, silver sodium hydrogen zirconium phosphate was introduced into the powder component of a PMMA denture base material at concentrations of 0.25%, 0.5%, 1%, 2%, 4%, and 8% (w/w). The survival rates of the gram-positive bacterium Staphylococcus aureus, gram-negative bacterium Escherichia coli and yeast-type fungus Candida albicans were established after fungal or bacterial suspensions were incubated with samples that had been previously stored in distilled water. Storage over a three-month period led to the progressive reduction of the initial antimicrobial properties. The results of this study suggest that additional microbiological tests should be conducted for materials that are treated with antimicrobial fillers and intended for long-term use. Future long-term studies of the migration of silver ions from the polymer matrix and the influence of different media on this ion emission are required.
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Affiliation(s)
- Grzegorz Chladek
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, Gliwice 44-100, Poland.
| | - Katarzyna Basa
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, Gliwice 44-100, Poland.
| | - Anna Mertas
- Chair and Department of Microbiology and Immunology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia in Katowice, Jordana 19, Zabrze 41-808, Poland.
| | - Wojciech Pakieła
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, Gliwice 44-100, Poland.
| | - Jarosław Żmudzki
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, Gliwice 44-100, Poland.
| | - Elżbieta Bobela
- Chair and Department of Microbiology and Immunology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia in Katowice, Jordana 19, Zabrze 41-808, Poland.
| | - Wojciech Król
- Chair and Department of Microbiology and Immunology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia in Katowice, Jordana 19, Zabrze 41-808, Poland.
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Arias LS, Delbem ACB, Fernandes RA, Barbosa DB, Monteiro DR. Activity of tyrosol against single and mixed-species oral biofilms. J Appl Microbiol 2016; 120:1240-9. [PMID: 26801208 DOI: 10.1111/jam.13070] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 12/24/2015] [Accepted: 01/18/2016] [Indexed: 11/30/2022]
Abstract
AIM This study aimed to evaluate the effect of tyrosol on the formation of single and mixed biofilms of Candida albicans ATCC 10231, Candida glabrata ATCC 90030 and Streptococcus mutans ATCC 25175 formed on acrylic resin (AR) and hydroxyapatite (HA) surfaces. METHODS AND RESULTS Single and mixed biofilms were formed on AR and HA in the presence of tyrosol at 50, 100 and 200 mmol l(-1), during 48 h. Next, antimicrobial activity was assessed through metabolic activity (XTT reduction assay) and the number of colony-forming units (CFUs). Scanning electron microscopy observations were performed in order to analyse biofilm structure. Tyrosol, mainly at 200 mmol l(-1), significantly decreased the metabolic activity and number of CFUs for all single and mixed-species biofilms formed on both surfaces. SEM images suggested cell damage caused by tyrosol. CONCLUSION Tyrosol showed inhibitory effects against biofilms formed by important oral pathogens. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first study showing the antibiofilm effect of tyrosol on Candida species and Strep. mutans in single and mixed cultures. These results may be useful in the development of topical therapies focused on preventing biofilm-associated oral diseases, such as denture stomatitis and dental caries.
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Affiliation(s)
- L S Arias
- Department of Pediatric Dentistry and Public Health, Araçatuba Dental School, Univ Estadual Paulista (UNESP), Araçatuba, SP, Brazil
| | - A C B Delbem
- Department of Pediatric Dentistry and Public Health, Araçatuba Dental School, Univ Estadual Paulista (UNESP), Araçatuba, SP, Brazil
| | - R A Fernandes
- Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Univ Estadual Paulista (UNESP), Araçatuba, SP, Brazil
| | - D B Barbosa
- Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Univ Estadual Paulista (UNESP), Araçatuba, SP, Brazil
| | - D R Monteiro
- Department of Pediatric Dentistry and Public Health, Araçatuba Dental School, Univ Estadual Paulista (UNESP), Araçatuba, SP, Brazil
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Monteiro DR, Feresin LP, Arias LS, Barão VAR, Barbosa DB, Delbem ACB. Effect of tyrosol on adhesion ofCandida albicansandCandida glabratato acrylic surfaces. Med Mycol 2015; 53:656-65. [DOI: 10.1093/mmy/myv052] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 06/01/2015] [Indexed: 11/12/2022] Open
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Abstract
Soft denture liners are used in complete and partial removable dentures to distribute functional loads homogeneously on the denture-bearing tissues. These materials are recommended in cases of irregular bone resorption, bony undercuts, thin atrophic mucosa, immediate prosthesis, healing after implant placement, and for patients with bruxism and xerostomia. The resilient lining materials can be categorized as plasticized acrylic resins or silicone elastomers. The plasticized acrylic resin comprises of acrylic polymers and copolymers, a liquid containing an acrylic monomer and plasticisers, such as ethyl alcohol and/or ethyl acetate responsible for preserving the material softness. The silicone elastomers, consisting of dimethylsiloxane polymers, with a chemical composition similar to that of the silicone impression materials devoid of leachable plasticisers, retain their elastic properties for prolonged periods. Most of the currently available materials have several disadvantages, including color stability, long-term resiliency, abrasion resistance, bond strength and porosity. Several modifications have been done recently to overcome of these disadvantages of the soft liners. The current review summarizes the recent developments in soft liners.
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Affiliation(s)
- Mohammed Ibrahim Hashem
- Assistant Professor, Department of Dental Health, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia; Department of Dental Biomaterials, Al-Azhar University, Cairo Egypt, e-mail:
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Silver nanoparticles in dental biomaterials. Int J Biomater 2015; 2015:485275. [PMID: 25667594 PMCID: PMC4312639 DOI: 10.1155/2015/485275] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 12/23/2014] [Accepted: 12/23/2014] [Indexed: 01/01/2023] Open
Abstract
Silver has been used in medicine for centuries because of its antimicrobial properties. More recently, silver nanoparticles have been synthesized and incorporated into several biomaterials, since their small size provides great antimicrobial effect, at low filler level. Hence, these nanoparticles have been applied in dentistry, in order to prevent or reduce biofilm formation over dental materials surfaces. This review aims to discuss the current progress in this field, highlighting aspects regarding silver nanoparticles incorporation, such as antimicrobial potential, mechanical properties, cytotoxicity, and long-term effectiveness. We also emphasize the need for more studies to determine the optimal concentration of silver nanoparticle and its release over time.
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The effects of silane-SiO2 nanocomposite films on Candida albicans adhesion and the surface and physical properties of acrylic resin denture base material. J Prosthet Dent 2014; 112:1530-8. [DOI: 10.1016/j.prosdent.2014.06.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 06/11/2014] [Accepted: 06/13/2014] [Indexed: 11/21/2022]
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Effect of Aging on Bond Strength of Two Soft Lining Materials to a Denture Base Polymer. J Indian Prosthodont Soc 2014. [PMID: 26199507 DOI: 10.1007/s13191-014-0389-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
The purpose of this study was evaluation the effect of immersion in distilled water and inorganic artificial saliva on the shear bond strength of a heat-polymerized and an auto-polymerized silicone-based denture lining materials. The denture liners investigated were Molloplast-B (heat-polymerized), and Mollosil plus (auto-polymerized). The soft liner specimens were 10 × 10 × 2.5 mm and were processed between two poly(methylmethacrylate) plates. Thirty shear specimens for each type of test lining material were prepared. Specimens were divided equally into three groups for each test lining material: first group, specimens were tested after 48 h of preparation without immersion; second group, specimens were tested following immersion in distilled water at 37 °C for 12 months; and third group, specimens were tested following immersion in inorganic artificial saliva at 37 °C for 12 months. Shear bond strength was measured using an universal testing machine at a crosshead speed of 40 mm/min and failure mode (adhesive, cohesive and mixed) after debonding was assessed. Data were statistically analyzed with one-way analysis of variance (ANOVA) (α = 0.05). ANOVA was followed by Bonferroni post hoc tests for pairwise comparisons. A significant difference in shear bond strength was detected between Molloplast-B and Mollosil plus following immersion in distilled water and artificial saliva. Molloplast-B demonstrated considerably higher shear strength than Mollosil plus after immersion. Shear strengths of the lining materials investigated reduced significantly after immersion in both solutions. Visual examination after separation revealed that the soft materials tested exhibited mostly adhesive failure. The effect of immersion in distilled water and inorganic artificial saliva on bond strength of test lining materials was perceivable; however, both of them had acceptable bond strength and might be proper for long-term use.
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Segundo ADLM, Pisani MX, Nascimento CD, Souza RF, Paranhos HDFO, Silva-Lovato CH. Clinical trial of an experimental cleaning solution: antibiofilm effect and integrity of a silicone-based denture liner. J Contemp Dent Pract 2014; 15:534-42. [PMID: 25707822 DOI: 10.5005/jp-journals-10024-1575] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
AIM This study evaluated the antibiofilm effect of an experimental solution of 2% Ricinus communis (R. communis) on a silicone-based denture liner by means of a randomized clinical trial, as well as the integrity of such liner following a cleansing regimen with such solution. MATERIALS AND METHODS About 30 complete denture wearers had their lower dentures relined with a silicone-based denture liner and randomly allocated to cleanse their dentures by means of: (A) a specific toothbrush for complete dentures and dentifrice; (B) soaking in an experimental 2% R. communis solution; and (C) association of A and B. Considered outcomes were biofilm coverage area (%), microbial counts by means of the deoxy-ribonucleic acid (DNA) checkerboard hybridization technique and physical integrity of the soft liner, assessed during a time interval of 60 days. Mean group values were compared by analysis of variance (ANOVA) and Tukey tests or generalized linear method (α = 0.05). RESULTS The mechanical method presented the lowest biofilm percentage (1.45 ± 1.03) if compared to the chemical method (2.96 ± 1.98) and the associated one (2.71 ± 1.76). After 60 days (3.37 ± 2.04), biofilm accumulation was higher than at 15 days (1.28 ± 0.77) and 30 days (2.46 ± 1.54). The denture liner was less deteriorated and kept its physical integrity when the mechanical method was applied. The chemical method presented higher effectiveness against microorganisms, including some Candida species. CONCLUSION The 2% R. communis solution presented stronger antimicrobial capacity than brushing on a silicone-based denture liner after immersion. However, it was not superior to the mechanical method in preserving the physical integrity of the material and in biofilm removal. CLINICAL SIGNIFICANCE Soft denture liners hygiene is a very important issue and not conclusive in the literature. The experimental solution of 2% R. communis evaluated presented promising antimicrobial potential and should be more explored to be recommended as cleanser.
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Affiliation(s)
- Antonio de Luna Malheiros Segundo
- PhD, Department of Dental Materials and Prosthodontics, Ribeirao Preto Dental School, University of São Paulo, Ribeirao Preto São Paulo, Brazil
| | - Marina Xavier Pisani
- PhD Student, Department of Dental Materials and Prosthodontics, Ribeirao Preto Dental School, University of São Paulo, Ribeirao Preto São Paulo, Brazil, e-mail:
| | - Céssio do Nascimento
- PhD Student, Department of Dental Materials and Prosthodontics, Ribeirao Preto Dental School, University of São Paulo, Ribeirao Preto São Paulo, Brazil
| | - Raphael Freitas Souza
- Associate Professor, Department of Dental Materials and Prosthodontics, Ribeirao Preto Dental School, University of São Paulo, Ribeirao Preto São Paulo, Brazil
| | - Helena de Freitas Oliveira Paranhos
- Associate Professor, Department of Dental Materials and Prosthodontics, Ribeirao Preto Dental School, University of São Paulo, Ribeirao Preto São Paulo, Brazil
| | - Cléudia Helena Silva-Lovato
- Associate Professor, Department of Dental Materials and Prosthodontics, Ribeirao Preto Dental School, University of São Paulo, Ribeirao Preto São Paulo, Brazil
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Chladek G, Żmudzki J, Kasperski J. Long-Term Soft Denture Lining Materials. MATERIALS 2014; 7:5816-5842. [PMID: 28788163 PMCID: PMC5456172 DOI: 10.3390/ma7085816] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 07/31/2014] [Accepted: 08/01/2014] [Indexed: 11/16/2022]
Abstract
Long-term soft denture lining (LTSDL) materials are used to alleviate the trauma associated with wearing complete dentures. Despite their established clinical efficacy, the use of LTSDLs has been limited due to the unfavorable effects of the oral environment on some of their mechanical and performance characteristics. The unresolved issue of LTSDL colonization by Candida albicans is particularly problematic. Silicone-based LTSDL (SLTSDL) materials, which are characterized by more stable hardness, sorption and solubility than acrylic-based LTSDLs (ALTSDLs), are currently the most commonly used LTSDLs. However, SLTSDLs are more prone to debonding from the denture base. Moreover, due to their limitations, the available methods for determining bond strength do not fully reflect the actual stability of these materials under clinical conditions. SLTSDL materials exhibit favorable viscoelastic properties compared with ALTSDLs. Furthermore, all of the lining materials exhibit an aging solution-specific tendency toward discoloration, and the available cleansers are not fully effective and can alter the mechanical properties of LTSDLs. Future studies are needed to improve the microbiological resistance of LTSDLs, as well as some of their performance characteristics.
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Affiliation(s)
- Grzegorz Chladek
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, Gliwice 44-100, Poland.
| | - Jarosław Żmudzki
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, Gliwice 44-100, Poland.
| | - Jacek Kasperski
- Department of Prosthetic Dentistry, Medical University of Silesia, pl. Akademicki 17, Bytom 41-902, Poland.
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Mendonça e Bertolini MD, Cavalcanti YW, Bordin D, Silva WJD, Cury AADB. Candida albicans biofilms and MMA surface treatment influence the adhesion of soft denture liners to PMMA resin. Braz Oral Res 2014; 28:61-6. [PMID: 25000598 DOI: 10.1590/s1806-83242013005000025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effect of Candida albicans biofilms and methyl methacrylate (MMA) pretreatment on the bond strength between soft denture liners and polymethyl methacrylate (PMMA) resin was analyzed. Specimens were prepared and randomly divided with respect to PMMA pretreatment, soft liner type (silicone-based or PMMA-based), and presence or absence of a C. albicans biofilm. Samples were composed of a soft denture liner bonded between two PMMA bars. Specimens (n = 10) were incubated to produce a C. albicans biofilm or stored in sterile PBS for 12 days. The tensile bond strength test was performed and failure type was determined using a stereomicroscope. Surface roughness (SR) and scanning electron microscopy (SEM) analysis were performed on denture liners (n = 8). Highest bond strength was observed in samples containing a silicone-based soft liner and stored in PBS, regardless of pretreatment (p < 0.01). Silicone-based specimens mostly underwent adhesive failures, while samples containing PMMA-based liners predominantly underwent cohesive failures. The silicone-based specimens SR decreased after 12 days of biofilm accumulation or PBS storage, while the SR of PMMA-based soft liners increased (p < 0.01). The PMMA-based soft liners surfaces presented sharp valleys and depressions, while silicone-based specimens surfaces exhibited more gentle features. In vitro exposure to C. albicans biofilms reduced the adhesion of denture liners to PMMA resin, and MMA pretreatment is recommended during relining procedures.
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Huh JB, Lim Y, Youn HI, Chang BM, Lee JY, Shin SW. Effect of denture cleansers on Candida albicans biofilm formation over resilient liners. J Adv Prosthodont 2014; 6:109-14. [PMID: 24843395 PMCID: PMC4024554 DOI: 10.4047/jap.2014.6.2.109] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 06/24/2013] [Accepted: 01/20/2014] [Indexed: 11/08/2022] Open
Abstract
PURPOSE The purpose of this study was to analyze the effect of denture cleansers on Candida albicans biofilm formation over resilient liners and to evaluate compatibility between resilient liners and denture cleansers. MATERIALS AND METHODS Acrylic resin (Lucitone 199®) and 3 resilient liners (COE-SOFT™, GC RELINE™ and SOFRELINER TOUGH TOUGH®) were incubated in denture cleansers (Polident® and Cleadent®) for 8 hours a day and in unstimulated saliva for 16 hours a day (n=25/gp) for 60 days. Two-way and three-way repeated measures ANOVA were performed to compare the surface roughness (Ra), pH and C. albicans binding level by radioisotope (α=0.05). The statistical significance of the relation between Ra and adhesion was evaluated by correlation analysis. RESULTS THE DEGREE OF RA WAS SIGNIFICANTLY DECREASED IN THE FOLLOWING ORDER: COE-SOFT™, acrylic resin, GC RELINE™ and SOFRELINER TOUGH®. The immersion in denture cleansers significantly increased Ra of resilient liners, except for SOFRELINER TOUGH® in Cleadent®. No significant differences in pH curves were observed among groups immersed in distilled water and denture cleansers. The binding levels of C. albicans were significantly decreased in the following order: COE-SOFT™, GC RELINE™, SOFRELINER TOUGH®, and acrylic resin. The immersion in Cleadent® seemed to decrease C. albicans binding level on GC RELINE™ and SOFRELINER TOUGH®. CONCLUSION Based on the C. albicans binding levels results, it is not recommended to immerse COE-SOFT™ in denture cleansers, and GC RELINE™ and SOFRELINER TOUGH® should be immersed in Cleadent®.
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Affiliation(s)
- Jung-Bo Huh
- Department of Prosthodontics, Busan National University, School of Dentistry, Dental Research Institute, Yangsan, Republic of Korea
| | - Younghun Lim
- College of Arts and Science, New York University, NY, USA
| | - Hye-In Youn
- Department of Prosthodontics, Institute for Clinical Dental Research, Korea University Guro Hospital, Korea University, Seoul, Republic of Korea
| | - Brian Myung Chang
- Maxillofacial Prosthodontics, Head and Neck Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Jeong-Yol Lee
- Department of Prosthodontics, Institute for Clinical Dental Research, Korea University Guro Hospital, Korea University, Seoul, Republic of Korea
| | - Sang-Wan Shin
- Department of Prosthodontics, Institute for Clinical Dental Research, Korea University Guro Hospital, Korea University, Seoul, Republic of Korea
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Time-lapse video microscopy and image analysis of adherence and growth patterns of Candida albicans strains. Appl Microbiol Biotechnol 2014; 98:5185-94. [DOI: 10.1007/s00253-014-5696-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 03/12/2014] [Accepted: 03/14/2014] [Indexed: 11/30/2022]
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Salloum AM. Creep and stress relaxation behavior of two soft denture liners. J Indian Prosthodont Soc 2014; 14:93-7. [PMID: 24605004 DOI: 10.1007/s13191-013-0279-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Accepted: 03/13/2013] [Indexed: 11/26/2022] Open
Abstract
Numerous investigators stated the indications of soft denture lining materials; but no one determined the indications of these materials according to their chemical structure. The purpose of this investigation was to evaluate the viscoelastic properties of acrylic and silicon lining materials. This study investigated and compared viscoelastic properties of two resilient denture lining materials. Tested materials were laboratory processed; one of them was silicone-based liner product (Molloplast-B), and the other was plasticized acrylic resin (Vertex™ Soft). Twenty cylindrical specimens (10-20 mm in length, 11.55 mm in diameter) were fabricated in an aluminum mold from each material for creep and stress relaxation testing (the study of viscoelastic properties). Tests were performed by using the universal testing machine DY-34. Collected data were analyzed with t test statistics for statistically significant differences at the 95 % confidence level. There was a clear difference in creep and stress relaxation behavior between acrylic and silicone liners. Statistical study of Young's moduli illustrated that Vertex™ Soft was softer than Molloplast-B. On the other hand, the results explained that the recovery of silicone material was better than of acrylic one. The creep test revealed that the plasticized acrylic resin lining material exhibited considerable creep, whereas silicone-based liner exhibited elastic behavior. Besides, the stress relaxation test showed that relaxation of the plasticized acrylic resin material was bigger than of the silicone-based liner.
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Affiliation(s)
- Alaa'a M Salloum
- Faculty of Dental Medicine, Department of Removable Prosthodontics, Damascus University, Damascus, Syria
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Srivatstava A, Ginjupalli K, Perampalli NU, Bhat N, Ballal M. Evaluation of the properties of a tissue conditioner containing origanum oil as an antifungal additive. J Prosthet Dent 2013; 110:313-9. [DOI: 10.1016/s0022-3913(13)60381-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Valentini F, Luz MS, Boscato N, Pereira-Cenci T. Biofilm formation on denture liners in a randomised controlled in situ trial. J Dent 2013; 41:420-7. [DOI: 10.1016/j.jdent.2013.02.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2012] [Revised: 02/19/2013] [Accepted: 02/20/2013] [Indexed: 12/20/2022] Open
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Atay A, Piskin B, Akin H, Sipahi C, Karakas A, Saracli MA. Evaluation of Candida albicans adherence on the surface of various maxillofacial silicone materials. J Mycol Med 2013; 23:27-32. [PMID: 23375858 DOI: 10.1016/j.mycmed.2012.12.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 12/06/2012] [Accepted: 12/07/2012] [Indexed: 10/27/2022]
Abstract
OBJECTIVES Fungal infection resulting from Candida adherence on material surface is one of the most important medical risks for maxillofacial prosthesis wearers. Despite wide usage, there is a sparse data evaluating C. albicans adherence on various commercial maxillofacial silicone materials that have different surface contact angles. The objective of this study was to investigate the relationship between surface contact angle and fungal adherence on widely used maxillofacial silicone materials. MATERIALS AND METHODS Three maxillofacial silicone materials titled VST-50, A-2006, and A-2186F were used for fabrication of disc-shaped specimens. Surface contact angle of specimens were measured by the goniometric method. Adhesion quantity of two different C. albicans strains was evaluated with a colorimetric method using XTT/Coenzyme Q0. The Kruskal-Wallis and Mann-Whitney U tests were used for statistical analysis of data. RESULTS The lowest surface contact angle values with the highest Candida adhesion quantity were measured on the specimens fabricated with A-2006 silicone material. Statistically significant differences were found among three maxillofacial silicone materials in terms of both surface contact angle values and adhesion quantity (P<0.01). CONCLUSION There is a close relationship between surface contact angle and quantity of Candida adherence. However, it should be noted that various factors arising from material properties may affect the complex nature of the Candida adhesion process.
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Affiliation(s)
- A Atay
- Haydarpasa Training Hospital, Department of Prosthodontics, Istanbul, Turkey.
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Kang SH, Lee HJ, Hong SH, Kim KH, Kwon TY. Influence of surface characteristics on the adhesion of Candida albicans to various denture lining materials. Acta Odontol Scand 2013; 71:241-8. [PMID: 22428860 DOI: 10.3109/00016357.2012.671360] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE This study evaluated the influence of surface characteristics of various denture lining materials on the adherence of Candida albicans. MATERIALS AND METHODS Four different types of materials (tissue conditioners, acrylic and silicone soft liners and hard reline materials) were selected. Disk-shaped material specimens were prepared and their surface roughness values (R(a) ) measured using a profilometer. The contact angles of four reference liquids were measured on the material surfaces and surface energy parameters (total surface energy, acid and base components, degree of hydrophobicity/hydrophilicity) of the materials were calculated in accordance with acid-base theory. Specimens were incubated with C. albicans and adhering fungi quantified using the colony counting method. Data were statistically analyzed using a one-way ANOVA with Games-Howell post-hoc test (α = 0.05). Pearson correlation analysis was applied to detect correlations between surface characteristics and Candida adhesion. RESULTS Significant differences in the surface roughness of the materials were found (p < 0.001). The acrylic soft liners were more hydrophilic than the other materials. Overall, the acrylic soft liners and tissue conditioners showed significantly greater Candida adhesion than silicone soft liners and hard reline materials (p < 0.05). The Pearson correlation analysis indicated that the base component and degree of hydrophobicity/hydrophilicity of the materials (p = 0.005/0.008), rather than the total surface energy and the surface roughness (p = 0.093/0.057), affected C. albicans adherence in a statistically significant way. CONCLUSIONS The adhesion of C. albicans to denture lining materials can be accounted for in terms of interfacial acid-base interactions.
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Affiliation(s)
- Seol-Hee Kang
- Department of Dental Biomaterials, School of Dentistry, Kyungpook National University, Daegu, Korea
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Chladek G, Kasperski J, Barszczewska-Rybarek I, Żmudzki J. Sorption, solubility, bond strength and hardness of denture soft lining incorporated with silver nanoparticles. Int J Mol Sci 2012; 14:563-74. [PMID: 23271371 PMCID: PMC3565282 DOI: 10.3390/ijms14010563] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 12/12/2012] [Accepted: 12/17/2012] [Indexed: 11/16/2022] Open
Abstract
The colonization of denture soft lining material by oral fungi can result in infections and stomatitis of oral tissues. In this study, 0 ppm to 200 ppm of silver nanoparticles was incorporated as an antimicrobial agent into composites to reduce the microbial colonization of lining materials. The effect of silver nanoparticle incorporation into a soft lining material on the sorption, solubility, hardness (on the Shore A scale) and tensile bond strength of the composites was investigated. The data were statistically analyzed using two-way ANOVA and Newman-Keuls post hoc tests or the chi-square Pearson test at the p < 0.05 level. An increase in the nanosilver concentration resulted in a decrease in hardness, an increase in sorption and solubility, a decrease in bond strength and a change in the failure type of the samples. The best combination of bond strength, sorption, solubility and hardness with antifungal efficacy was achieved for silver nanoparticle concentrations ranging from 20 ppm to 40 ppm. These composites did not show properties worse than those of the material without silver nanoparticles and exhibited enhanced in vitro antifungal efficiency.
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Affiliation(s)
- Grzegorz Chladek
- Division of Materials Processing Technology, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, Gliwice 44-100, Poland; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +48-32-237-29-07
| | - Jacek Kasperski
- Department of Prosthetic Dentistry, Medical University of Silesia, pl. Akademicki 17, Bytom 41-902, Poland; E-Mail:
| | - Izabela Barszczewska-Rybarek
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, ul. M. Strzody 9, Gliwice 44-100, Poland; E-Mail:
| | - Jarosław Żmudzki
- Division of Materials Processing Technology, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, Gliwice 44-100, Poland; E-Mail:
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Mantri SS, Parkhedkar RD, Mantri SP. Candida colonisation and the efficacy of chlorhexidine gluconate on soft silicone-lined dentures of diabetic and non-diabetic patients. Gerodontology 2012; 30:288-95. [PMID: 23137002 DOI: 10.1111/ger.12012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/02/2012] [Indexed: 12/01/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate Candida colonisation in the dentures with silicone soft liner in diabetic and non-diabetic patients and to assess the antifungal efficacy of chlorhexidine gluconate on Candida colonies. MATERIALS AND METHODS Thirty patients with resorbed ridges, fifteen each in the diabetic and non-diabetic group, were selected. The mandibular denture of each patient was lined with heat-polymerised silicone resilient liner. Patients were instructed to clean the dentures with soap water and brush. Samples from the fitting surface of mandibular dentures were collected at 15, 21 and 30 days. Subsequently, samples were collected at 15, 21 and 30 days, after cleaning the dentures with a detergent solution of 4% chlorhexidine gluconate, and incubated for the evaluation of Candida growth. These data were subjected to statistical analysis by Mann-Whitney U-test. RESULTS Normal oral flora in diabetics and non-diabetics showed no difference (p > 0.05). The density of colonies increased after 21 and 30 days in diabetic patients (p < 0.05). Number of Candida colonies significantly reduced in both the groups after 21 and 30 days of cleaning the dentures with 4% chlorhexidine gluconate (p < 0.05). CONCLUSION Dentures with silicone resilient liner exhibit increased Candida growth in diabetic patients. Four per cent chlorhexidine gluconate solution effectively disinfects these dentures.
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Affiliation(s)
- Sneha S Mantri
- Departmentt of Prosthodontics, Hitkarini Dental College & Hospital, Jabalpur, India
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