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Almeida NLM, Peralta LCF, Pontes FML, Rinaldo D, Porto VC, Lara VS. Anti-Candida activity and biocompatibility of silver nanoparticles associated with denture glaze: a new approach to the management of denture stomatitis. Folia Microbiol (Praha) 2024:10.1007/s12223-024-01161-4. [PMID: 38652435 DOI: 10.1007/s12223-024-01161-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 03/26/2024] [Indexed: 04/25/2024]
Abstract
The association of silver nanoparticles (AgNps) to sealant agent Palaseal® can be a promising alternative for complete denture wearers who may develop denture stomatitis (DS). The study aimed to evaluate the anti-Candida and biocompatible potential of silver nanoparticles synthesized by three routes associated with denture glaze to prevent and/or treat oral candidiasis. Surface acrylic resin specimens were treated with different associations of glaze with AgNps (VER+AgUV, VER+AgTurk and VER+AgGm). As controls, specimens were treated with glaze+nystatin (VER+Nyst), glaze only (VER) or submerged in PBS (PBS). Afterwards, Candida albicans biofilm was developed for 24 h, 15 d and 30 d. Subsequently, the biofilm was quantified by CFU/mL, XTT assay and confocal laser scanning microscopy. Fibroblasts were submitted to conditioned medium with the same associations for 24, 48 and 72 h and LIVE/DEAD® viability test was carried out. Regardless of the period, there was a significant reduction (p < 0.01) of viable fungal cells load, as well as inhibition of fungal metabolic activity, in specimens treated with glaze+AgNps associations, compared to VER and PBS. The anti-Candida effects of the associations were similar to the VER+Nyst group, with emphasis on VER+AgGm, which showed the highest percentage values of non-viable fungal cells maintained over time. The associations did not prove toxicity to fibroblasts. The AgNps exerted antimicrobial activity against C. albicans biofilms and are biocompatible. The most effective results were achieved with the association of glaze+silver nanoparticles synthesized by the green chemistry method (AgGm), proving to be an innovative alternative in the management of DS.
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Affiliation(s)
- Nara Lígia Martins Almeida
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo (USP), Bauru, 17012-901, Brazil
| | - Laura Catalí Ferreira Peralta
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru 17012-901, Brazil
| | | | - Daniel Rinaldo
- Department of Chemistry, São Paulo State University (UNESP), Bauru 17033-360, Brazil
| | - Vinicius Carvalho Porto
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru 17012-901, Brazil
| | - Vanessa Soares Lara
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo (USP), Bauru, 17012-901, Brazil.
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Sugio CYC, Garcia AAMN, Kitamoto KADA, Santiago Júnior JF, Soares S, Porto VC, Urban VM, Ferrari PC, Fernandes MH, Neppelenbroek KH. Mucoadhesive delivery systems for oral candidiasis treatment: A systematic review and meta-analysis. Oral Dis 2024. [PMID: 38523365 DOI: 10.1111/odi.14928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 02/01/2024] [Accepted: 03/06/2024] [Indexed: 03/26/2024]
Abstract
OBJECTIVES This systematic review and meta-analysis aimed to evaluate the clinical and mycological effectiveness of mucoadhesives as vehicles for drugs or natural products in the treatment of oral candidiasis. MATERIALS AND METHODS The search for articles was carried out in the Medline/PubMed, SCOPUS, EMBASE, Web of Science, Cochrane Library, and SciELO databases before August 2023. We selected the studies, extracted the data, evaluated the study quality, graded the evidence, performed the risk of bias, and carried out meta-analysis. RESULTS A total of 389 potentially relevant articles were identified, and 11 studies (1869 participants) met the inclusion criteria of the systematic review. The overall risk of bias was considered low. The most common presentation of mucoadhesives was tablets, with miconazole being the most frequently drug used in the delivery system. Mucoadhesives demonstrated comparable efficacy with topical or systemic antifungal agents, with no significant differences between treatments in terms of clinical (RR = 0.907; 95CI = 0.3-1.297; p = 0.591; I2 = 64.648) or mycological (RR = 0.95; 95CI = 0.667-1.360; p = 0.789; I2 = 73.271) efficacy. CONCLUSIONS Mucoadhesives may be a suitable alternative to conventional treatments, with the advantage of reducing the frequency of application by up to 5 times and the daily dosage by up to 20 times.
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Affiliation(s)
- Carolina Yoshi Campos Sugio
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil
- BoneLab-Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, Associated Laboratory for Green Chemistry/Network of Chemistry and Technology (LAQV/REQUIMTE), University of Porto (UP), Porto, Portugal
| | | | - Klaryssa Akemi de Araujo Kitamoto
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil
- BoneLab-Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, Associated Laboratory for Green Chemistry/Network of Chemistry and Technology (LAQV/REQUIMTE), University of Porto (UP), Porto, Portugal
| | | | - Simone Soares
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil
| | - Vinicius Carvalho Porto
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil
| | | | | | - Maria Helena Fernandes
- BoneLab-Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, Associated Laboratory for Green Chemistry/Network of Chemistry and Technology (LAQV/REQUIMTE), University of Porto (UP), Porto, Portugal
| | - Karin Hermana Neppelenbroek
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil
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Gomes ACG, Maciel JG, Garcia AAMN, Coelho LAS, Rodrigues GM, Porto VC, Polyzois G, Klein MI, Soares S, Urban VM, Neppelenbroek KH. Anti-biofilm effectiveness of protocols for cleaning complete dentures in hospitalized patients: a randomized controlled trial. J Appl Oral Sci 2024; 32:e20230381. [PMID: 38537031 PMCID: PMC10984580 DOI: 10.1590/1678-7757-2022-0381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/15/2024] [Accepted: 02/01/2024] [Indexed: 04/01/2024] Open
Abstract
BACKGROUND Denture biofilm acts as a potential reservoir for respiratory pathogens, considerably increasing the risk of lung infections, specifically aspiration pneumonia, mainly 48h after hospital admission. The establishment of a straightforward, affordable, and applicable hygiene protocol in a hospital environment for the effective control of denture biofilm can be particularly useful to prevent respiratory infections or reduce the course of established lung disease. OBJECTIVES To evaluate the anti-biofilm effectiveness of denture cleaning protocols in hospitalized patients. METHODOLOGY The maxillary complete dentures (MCDs) of 340 hospitalized participants were randomly cleaned once using one of the following 17 protocols (n=20): brushing with distilled water, toothpaste, or neutral liquid soap (controls); immersion in chemical solutions (1% sodium hypochlorite, alkaline peroxide, 0.12% or 2% chlorhexidine digluconate), or microwave irradiation (650 W for 3 min) combined or not with brushing. Before and after the application of the protocols, the biofilm of the intaglio surface of the MCDs was evaluated using two methods: denture biofilm coverage area (%) and microbiological quantitative cultures on blood agar and Sabouraud Dextrose Agar (CFU/mL). Data were subjected to the Wilcoxon and Kruskal-Wallis tests (α=0.05). RESULTS All 17 protocols significantly reduced the percentage area of denture biofilm and microbial and fungal load (P<0.05). The highest percentage reductions in the area of denture biofilm were observed for 1% hypochlorite solution with or without brushing and for 2% chlorhexidine solution and microwave irradiation only in association with brushing (P<0.05). The greatest reductions in microbial and fungal load were found for the groups that used solutions of 2% chlorhexidine and 1% hypochlorite and microwave irradiation, regardless of the association with brushing (P<0.05). CONCLUSIONS A single immersion for 10 min in 1% sodium hypochlorite, even in the absence of brushing, proved to be a straightforward, rapid, low-cost, and effective protocol for cleaning the dentures of hospitalized patients.
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Affiliation(s)
- Anna Clara Gurgel Gomes
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Prótese e Periodontia, Bauru, SP, Brasil
| | - Janaina Gomes Maciel
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Prótese e Periodontia, Bauru, SP, Brasil
| | | | - Letycia Accioly Simões Coelho
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, SP, Brasil
| | - Giulia Murcia Rodrigues
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Prótese e Periodontia, Bauru, SP, Brasil
| | - Vinicius Carvalho Porto
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Prótese e Periodontia, Bauru, SP, Brasil
| | - Grigorios Polyzois
- National and Kapodistrian University of Athens, School of Dentistry, Athens, Greece
| | - Marlise Inêz Klein
- Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba, Departamento de Diagnóstico Oral, Piracicaba, SP, Brasil
| | - Simone Soares
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Prótese e Periodontia, Bauru, SP, Brasil
| | | | - Karin Hermana Neppelenbroek
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Prótese e Periodontia, Bauru, SP, Brasil
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Carneiro CA, Santiago Junior JF, Peralta LCF, Neppelenbroek KH, Porto VC. What is the Best Tooth-Supported Attachment System for Distal-Extension Removable Partial Dentures? A Systematic Review with Meta-Analysis. INT J PROSTHODONT 2023; 0:0. [PMID: 37729481 DOI: 10.11607/ijp.8337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
PURPOSE To evaluate the published literature on tooth-tissue supported removable partial dentures (RPDs) and determine the attachment system that provides the best clinical outcome. MATERIALS AND METHODS A comprehensive search of studies published up to November 2021 was performed in the PubMed/MEDLINE, Web of Science, and Cochrane Library databases according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) criteria. The study protocol was approved and was registered in the International Prospective Register of Systematic Reviews (PROSPERO: CRD42021268449). The PICO question was, "What is the best attachment system used in Kennedy class I and II removable partial dentures?" RESULTS The search identified 871 articles, of which 21 met the inclusion criteria. The evaluation period in the studies ranged from 3 to 282 months. A total of 1,357 patients were included, of which 526 used prostheses with attachments. The mini SG attachment (extracoronal) was the most commonly used attachment, and the survival rate ranged from 37% to 98.1% in 10 studies, with no significant differences between the systems. Among the 10 studies selected for quantitative analysis, the meta-analysis revealed an overall failure rate of 16.6% (95% confidence interval: 10.4-25.4%), and heterogeneity of I²=65.725 (Q-value: 26.258, P=.002). CONCLUSION Clinical studies comparing different attachment systems for rehabilitation are lacking. Our findings suggest that attachment-retained RPDs have good retention and better esthetics than conventional RPDs and that the extracoronal attachment system is the most viable choice for treatment at the free end.
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Peralta LCF, Almeida NLM, Pontes FML, Rinaldo D, Carneiro CA, Neppelenbroek KH, Lara VS, Porto VC. Silver nanoparticles in denture adhesive: An antimicrobial approach against Candida albicans. J Dent 2023; 131:104445. [PMID: 36773742 DOI: 10.1016/j.jdent.2023.104445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 01/21/2023] [Accepted: 02/03/2023] [Indexed: 02/11/2023] Open
Abstract
OBJECTIVE To evaluate the antimicrobial potential of silver nanoparticles (Ag NPs) synthesized using three different routes (ultraviolet light, Turkevich, and green chemistry method using Glycine max extract) associated with COREGA® denture powder adhesive. METHODS Heat-cured acrylic resin specimens were treated with different Ag NPs associated with the adhesive (AD + Ag UV, AD + Ag Turk, and AD + Ag Gm groups). As controls, the specimens were treated with a combination of adhesive and nystatin (AD + Nyst group), only adhesive (AD group), or submerged on the surface of the specimens (PBS group). After the treatments, biofilms of C. albicans developed for 3, 6, and 12 h on the specimen surfaces. The biofilm was quantified using colony-forming units per milliliter, colorimetric assay, and confocal laser scanning microscopy. RESULTS Regardless of the period, we observed an inhibition of fungal load and a reduction in metabolic activity and biofilm mass in the resin specimens treated with the combinations AD/Ag NPs, compared to AD and PBS. The antimicrobial action of the AD + Turk and AD + Ag Gm groups was similar than that for the AD + Nyst group in all periods and viability tests, except for the biofilm mass (12 h). CONCLUSIONS The COREGA® adhesive with Ag NPs, mainly those synthesized using the Turkevich and Glycine max methods, showed excellent antimicrobial activity against C. albicans biofilms, maintained for up to 12 h. CLINICAL SIGNIFICANCE The association of Ag NPs to the adhesive can add preventive or therapeutic effects against denture stomatitis, to this prosthetic material.
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Affiliation(s)
- Laura Catalí Ferreira Peralta
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil, 17012-901
| | - Nara Ligia Martins Almeida
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil, 17012-901
| | | | - Daniel Rinaldo
- Department of Chemistry, São Paulo State University (UNESP), Bauru, Brazil
| | - Camila Alves Carneiro
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil, 17012-901
| | - Karin Hermana Neppelenbroek
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil, 17012-901
| | - Vanessa Soares Lara
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil, 17012-901
| | - Vinicius Carvalho Porto
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil, 17012-901.
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Pordeus MD, Gasparetto GD, Machado LMR, Noritomi PY, Costa RMBD, Chappuis-Chocano AP, Venante HS, Junior JFS, Porto VC. A New Proposal for Calibrated Gauges for Removable Partial Dentures: A Finite Element Analysis. J Contemp Dent Pract 2022; 23:1230-1236. [PMID: 37125521 DOI: 10.5005/jp-journals-10024-3453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
AIM The aim of this study was to evaluate the stress distribution of a planned removable partial denture (RPD) using new proposals for calibrated gauges of 0.3 mm and 0.35 mm undercuts through the three-dimensional (3D) finite element methodology, and compare them with 0.25 mm and 0.5 mm gauges that are already existing in clinical practice. MATERIALS AND METHODS Kennedy class-I edentulous 3D models and their respective RPDs (InVesalius software; Rhinoceros and SolidWorks CAD) were created and exported to the finite element program HyperMesh 2019 for mesh configuration. In the following steps, axial loading (0º) of 40 N per point was performed, with 3 points on the molars and 2 points on the premolars, totaling 280 N unilaterally. The model was processed by the OptiStruct 2019 software and imported into the HyperView 2019 software to obtain the stress maps (MPa). RESULTS The use of 0.30 and 0.35 mm calibrated gauges presented tensions similar to those with the 0.25 mm gauge (gold standard) and caused no significant damage to biological structures. The use of a 0.5 mm undercut caused greater traction force in the periodontal ligament of the abutments. CONCLUSIONS The 0.35 mm undercut seems promising as it presented more favorable results in this simulation, on the other hand, a 0.5 mm undercut is greater than that necessary for retainers made of CoCr. CLINICAL SIGNIFICANCE This study aims to measure a new undercut gauge (0.35 mm) to increase the retention area in abutment teeth of removable partial dentures.
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Affiliation(s)
- Mariana Domingues Pordeus
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | | | | | | | | | - Ana Paula Chappuis-Chocano
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Helena Sandrini Venante
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Joel Ferreira Santiago Junior
- Centro Universitário Sagrado Coração, UNISAGRADO, Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil, e-mail:
| | - Vinicius Carvalho Porto
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
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Neppelenbroek KH, Falcão Procópio AL, Gurgel Gomes AC, Campos Sugio CY, Maia Neves Garcia AA, Porto VC, Urban VM. A modified Newton classification for denture stomatitis. Prim Dent J 2022; 11:55-58. [PMID: 35658661 DOI: 10.1177/20501684221101095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The effectiveness of denture stomatitis (DS) treatment should be evaluated by associating clinical and mycological parameters. Although widely used in clinical studies, the Newton classification does not accurately represent the degree of severity of palatal inflammation in terms of extent of the lesions and intensity of the erythema. Therefore, a modified Newton classification has been proposed considering the coverage area of palatal inflammation and the erythema level. This consistent and direct ranking will help standardise randomised clinical trials, as well as the statistical comparison among blind evaluations of the obtained scores within and between studies.
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Affiliation(s)
- Karin Hermana Neppelenbroek
- Associate Professor, Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | | | - Anna Clara Gurgel Gomes
- Postgraduate student, Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Carolina Yoshi Campos Sugio
- Postgraduate student, Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Amanda Aparecida Maia Neves Garcia
- Postgraduate student, Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Vinicius Carvalho Porto
- Associate Professor, Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Vanessa Migliorini Urban
- Assistant Professor, Department of Dentistry, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
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da Costa RMB, Venante HS, Pordeus MD, Chappuis-Chocano AP, Neppelenbroek KH, Santiago Júnior JF, Porto VC. Does microwave disinfection affect the dimensional stability of denture base acrylic resins? A systematic review. Gerodontology 2021; 39:339-347. [PMID: 34661315 DOI: 10.1111/ger.12597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 09/17/2021] [Accepted: 10/04/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To systematically evaluate the effect of microwave disinfection on the dimensional stability of denture base acrylic resins. BACKGROUND Microwave disinfection has been considered as an alternative method for disinfecting complete dentures to help prevent and treat denture stomatitis. However, data on the impact of microwave disinfection on the dimensional stability of acrylic resins are still scarce. METHODS The PubMed/Medline, SCOPUS and EMBASE databases were searched in order to assess articles published in English up to January 2021 (CRD42021212267). We included studies that have assessed the effect of microwave disinfection, on the dimensional stability of acrylic resins, comparing them with negative or positive controls. RESULTS A total of seven in vitro studies were included. The qualitative synthesis demonstrated that, in general, microwave disinfection produced more distortion on the materials than do immersion in sodium hypochlorite, chloride solution, chlorhexidine, and water immersion. However, considering the dimensional stability of the specimens, microwave disinfection at 500 W for 3 minutes, and at 450 W for 5 minutes, produced similar or better outcomes than did control groups. CONCLUSION In general, microwave disinfection promotes changes in the dimensional stability of denture base acrylic resins, and should thus be used with caution. However, microwave disinfection protocols at lower power settings (500 and 450 W) and exposure times (3 and 5 minutes) produces similar or less distortion than chemical disinfection. More studies are still required in order to evaluate the clinical and long-term implications of microwave disinfection.
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Affiliation(s)
| | - Helena Sandrini Venante
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Mariana Domingues Pordeus
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Ana Paula Chappuis-Chocano
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Karin Hermana Neppelenbroek
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | | | - Vinicius Carvalho Porto
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
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Chappuis Chocano AP, Venante HS, Bringel da Costa RM, Pordeus MD, Santiago Junior JF, Porto VC. Evaluation of the clinical performance of dentures manufactured by computer-aided technology and conventional techniques: A systematic review. J Prosthet Dent 2021; 129:547-553. [PMID: 34332774 DOI: 10.1016/j.prosdent.2021.06.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 11/19/2022]
Abstract
STATEMENT OF PROBLEM The introduction of computer-aided design and computer-aided manufacturing (CAD-CAM) technology for complete denture fabrication may have improved clinical outcomes compared with conventional techniques. However, systematic reviews comparing these techniques are lacking. PURPOSE The purpose of this systematic review was to identify, compare, and synthesize the outcomes of published clinical studies related to complete denture fabrication, with respect to the differences between CAD-CAM technology and conventional techniques. MATERIAL AND METHODS A comprehensive search of studies published up to March 16, 2020, was conducted by using the PubMed/MEDLINE, Web of Science, Cochrane Library, SciELO, and Embase databases according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement criteria and was registered in the International Prospective Register of Systematic Reviews (PROSPERO ID 42020202614). The population, intervention, comparison, and outcome (PICO) question was: Do CAD-CAM complete dentures have a similar functional performance to those fabricated by conventional techniques? The quality of publications was appraised by using the Critical Appraisal Skills Program (CASP) checklists. RESULTS Of the 1232 titles, 6 articles were selected. The studies reported better retention of digitally manufactured complete dentures without denture adhesives than that of conventional complete dentures with or without denture adhesives. Other studies reported that dentures manufactured with digital systems were better adapted to tissue surfaces, required less clinical time, were lower in cost, and provided better experience and satisfaction to patients. CONCLUSIONS The assessment of CAD-CAM planning and manufacturing through clinical studies is ongoing. However, preliminary results indicate better clinical performance and lower overall costs of digital complete dentures than conventional dentures.
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Affiliation(s)
- Ana Paula Chappuis Chocano
- PhD student, Department of Periodontics and Prosthodontics, Dental School of Bauru, FOB-USP, University of São Paulo, Bauru, São Paulo, Brazil
| | - Helena Sandrini Venante
- PhD student, Department of Periodontics and Prosthodontics, Dental School of Bauru, FOB-USP, University of São Paulo, Bauru, São Paulo, Brazil.
| | - Rodrigo Moreira Bringel da Costa
- PhD student, Department of Periodontics and Prosthodontics, Dental School of Bauru, FOB-USP, University of São Paulo, Bauru, São Paulo, Brazil
| | - Mariana Domingues Pordeus
- PhD student, Department of Periodontics and Prosthodontics, Dental School of Bauru, FOB-USP, University of São Paulo, Bauru, São Paulo, Brazil
| | | | - Vinicius Carvalho Porto
- Professor, Department of Periodontics and Prosthodontics, Dental School of Bauru, FOB-USP, University of São Paulo, Bauru, São Paulo, Brazil
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Neppelenbroek KH, Campos Sugio CY, Gomes ACG, Cano IP, Urban VM, Porto VC. Occlusal marking film for accurate interference assessments of removable partial denture frameworks: A dental technique. J Prosthet Dent 2021; 128:864-866. [PMID: 33715831 DOI: 10.1016/j.prosdent.2021.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/03/2021] [Accepted: 02/04/2021] [Indexed: 11/25/2022]
Abstract
A technique is described for detecting areas of interference for removable partial denture frameworks. An occlusal marking film is placed between the misfitted abutment teeth and framework region. Gentle pressure is applied to seat the framework, and the exact areas of interference are seen on removal. With this clean, rapid, cost-effective, and straightforward approach, areas of interference can be precisely adjusted for complete seating of the removable partial denture framework.
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Affiliation(s)
- Karin Hermana Neppelenbroek
- Associate Professor, Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, SP, Brazil.
| | - Carolina Yoshi Campos Sugio
- Postgraduate student, Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, SP, Brazil
| | - Anna Clara Gurgel Gomes
- Postgraduate student, Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, SP, Brazil
| | - Isadora Prado Cano
- Postgraduate student, Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, SP, Brazil
| | - Vanessa Migliorini Urban
- Assistant Professor, Department of Dentistry, State University of Ponta Grossa (UEPG), Ponta Grossa, PR, Brazil
| | - Vinicius Carvalho Porto
- Associate Professor, Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, SP, Brazil
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Pordeus MD, Santiago Junior JF, Venante HS, Bringel da Costa RM, Chappuis Chocano AP, Porto VC. Computer-aided technology for fabricating removable partial denture frameworks: A systematic review and meta-analysis. J Prosthet Dent 2021; 128:331-340. [PMID: 33581866 DOI: 10.1016/j.prosdent.2020.06.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 06/26/2020] [Accepted: 06/29/2020] [Indexed: 11/18/2022]
Abstract
STATEMENT OF PROBLEM A consensus that establishes the indications and clinical performance of removable partial denture (RPD) frameworks designed and manufactured with computer-aided design and computer-aided manufacturing (CAD-CAM) systems is lacking. PURPOSE The purpose of this systematic review and meta-analysis was to evaluate the currently published literature investigating different CAD-CAM methods and techniques for RPD manufacturing and their clinical performance. MATERIAL AND METHODS A comprehensive search of studies published up to September 2019 was performed in PubMed/MEDLINE, Web of Science, Cochrane Library, and SciELO databases according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA Statement) criteria and was registered and approved in the International Prospective Register of Systematic Reviews (PROSPERO: CRD42020152197). The population, intervention, comparison, outcome (PICO) question was "Do the CAD-CAM frameworks have similar performances to those fabricated by conventional techniques?" The meta-analysis included clinical and in vitro studies based on the effect size and test of Null (2-Tail) with 95% confidence interval (CI). Clinical and in vitro studies were selected and analyzed separately. RESULTS A total of 15 articles out of 358 were selected. For clinical studies, quantitative analysis with a sample of 25 participants showed a mean discrepancy between occlusal rests and rest seats of 184.91 μm (95% CI: 152.6 μm-217.15 μm) and heterogeneity (I2) of 0%. Clinical data considered that frameworks were acceptable for continuity of treatment. The predominant materials were cobalt-chromium (Co-Cr) and polyetheretherketone (PEEK), and studies using Co-Cr reported that the structure required adjustments. In addition, it has been reported that the indirect technique was time-consuming and selective laser melting (SLM) can be costly. PEEK structures have been more widely accepted because of improved esthetics. Quantitative data from the in vitro studies revealed that the additive manufacturing technique (2.006 mm: 95% CI: -2.021 mm to 6.032 mm) was not significantly different from the indirect technique (0.026 mm; P=.455; random: I2: 98.402%). CONCLUSIONS Clinical studies and in vitro research on CAD-CAM planning and manufacturing of removable prosthesis frameworks are still sparse. However, preliminary data indicate a similar fit and esthetic improvement when compared with the conventional technique.
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Affiliation(s)
- Mariana Domingues Pordeus
- MSc student, Dental School of Bauru, FOB-USP - University of São Paulo, Octávio Pinheiro Brisolla, Jardim Brasil, Bauru, São Paulo, Brazil
| | | | - Helena Sandrini Venante
- PhD student, Dental School of Bauru, FOB-USP - University of São Paulo, Bauru, São Paulo, Brazil.
| | | | | | - Vinicius Carvalho Porto
- Associate Professor, Dental School of BauruFOB-USP - University of São Paulo, Bauru, São Paulo, Brazil
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da Costa RMB, Poluha RL, De la Torre Canales G, Junior JFS, Conti PCR, Neppelenbroek KH, Porto VC. The effectiveness of microwave disinfection in treating Candida-associated denture stomatitis: a systematic review and metaanalysis. Clin Oral Investig 2020; 24:3821-3832. [PMID: 32974776 DOI: 10.1007/s00784-020-03599-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 09/16/2020] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To evaluate the effectiveness of microwave disinfection in treating Candida-associated denture stomatitis (CADS). MATERIALS AND METHODS The PubMed/MEDLINE, Embase, and Scopus databases were searched for reports on randomized clinical trials (RCTs) published in English until May 2020 (PROSPERO CRD42020192062) that evaluated the treatment of CADS by using microwave disinfection. The main outcomes were the improvement of clinical signs and/or the decrease in the residual yeast present on the dentures and palatal mucosa. The mean differences, standard deviations, risk ratio, and 95% confidence interval were calculated by using the random-effects model. Heterogeneity was assessed by using Cochran's Q test and I2 values. The level of significance was set at α = 0.05. RESULTS Five RCTs with 245 participants were included. The descriptive investigations demonstrated that microwave disinfection was as effective (p > 0.05) as 0.2% chlorhexidine, 0.02% sodium hypochlorite, and topical nystatin (100.000 IU/mL), and was superior to topical miconazole in treating CADS. The metaanalysis did not show a statistical difference between microwave disinfection and nystatin (100.000 IU/mL) treatment in terms of mycological counts, cure, and recurrence rates (p > 0.05). CONCLUSION Microwave disinfection showed comparable results with those of conventional therapies for treating CADS. In addition, treatment with 650 W for 3 min once a week for 14 days had better cost-effect results, indicating both the prevention and treatment of CADS. CLINICAL RELEVANCE Our findings provide evidence regarding the treatment of CADS using microwave disinfection, and also indicating the best cost-effective option for this treatment modality.
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Affiliation(s)
- Rodrigo Moreira Bringel da Costa
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, SP, 17012-901, Brazil.
| | - Rodrigo Lorenzi Poluha
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, SP, 17012-901, Brazil
| | - Giancarlo De la Torre Canales
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, SP, 17012-901, Brazil
| | - Joel Ferreira Santiago Junior
- Department of Health Sciences, School of Dentistry, Centro Universitário Sagrado Coração - UNISAGRADO, Irmã Arminda St., 10-50, Bauru, SP, 17011-160, Brazil
| | - Paulo Cesar Rodrigues Conti
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, SP, 17012-901, Brazil
| | - Karin Hermana Neppelenbroek
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, SP, 17012-901, Brazil
| | - Vinicius Carvalho Porto
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, SP, 17012-901, Brazil
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da Silva RA, Ishikiriama BLC, Ribeiro Lopes MM, de Castro RD, Garcia CR, Porto VC, Santos CF, Neppelenbroek KH, Lara VS. Antifungal activity of Punicalagin-nystatin combinations against Candida albicans. Oral Dis 2020; 26:1810-1819. [PMID: 32583467 DOI: 10.1111/odi.13507] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 05/19/2020] [Accepted: 05/31/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Oral candidiasis is the most common opportunistic fungal infection of oral mucosa and results from an overgrowth of Candida, especially Candida albicans. The potential anti-C. albicans and cytotoxicity of punicalagin (PCG), isolated from Punica granatum, alone or with nystatin (NYS) were evaluated. METHODS Activity of compounds alone or in combinations was determined against two C. albicans strains (ATCC 90028 and SC5314). Minimal inhibitory concentration (MIC)-50 and Minimum Fungicidal Concentration (MFC) were assessed by XTT assay and CFU counts, respectively. For combinations, determination of fractional inhibitory concentration index was performed. Ergosterol pathway was investigated as a possible PCG antifungal mechanism. Cytotoxicity assays were undertaken on human primary oral keratinocytes and gingival fibroblasts incubated with antifungal concentrations of PCG and/or NYS for 24 hr. RESULTS Combination of NYS and PCG increased antifungal efficacy, compared with compounds tested alone. Combinations 4 (PCG-6.25 μg/ml; NYS-3.9 μg/ml) and 5 (PCG-12.5 μg/ml; NYS-1.95 μg/ml) were more effective since they reduced the MIC-50 of PCG (50 μg/ml) by 8 and 4 times, respectively, increased the candidal inhibition and nullified the PCG cytotoxicity for keratinocytes. PCG antifungal mechanism did not involve ergosterol biosynthesis pathway. CONCLUSIONS The favorable outcomes for combination of PCG and NYS encourage further testing this therapeutic strategy against C. albicans.
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Affiliation(s)
- Rafaela Alves da Silva
- Integrated Research Center, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil
| | | | | | - Ricardo Dias de Castro
- Department of Clinical and Social Dentistry, Federal University of Paraíba, Castelo Branco III, João Pessoa, Brazil
| | - Cindy Ruiz Garcia
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil
| | - Vinicius Carvalho Porto
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil
| | - Carlos Ferreira Santos
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil
| | - Karin Hermana Neppelenbroek
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil
| | - Vanessa Soares Lara
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil
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Pereira JR, Pamato S, Santini MF, Porto VC, Ricci WA, Só MVR. Push-out bond strength of fiberglass posts cemented with adhesive and self-adhesive resin cements according to the root canal surface. Saudi Dent J 2019; 33:22-26. [PMID: 33473238 PMCID: PMC7801235 DOI: 10.1016/j.sdentj.2019.11.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 11/18/2019] [Accepted: 11/21/2019] [Indexed: 11/18/2022] Open
Abstract
Evaluating the bond strength of fiberglass posts cemented with different resin cements. MATERIALS AND METHODS Seventy freshly extracted roots of healthy human canines were endodontically treated and prepared to receive fiberglass posts. The roots were randomly divided into seven groups: (G1) RelyX ARC, (G2) Enforce, (G3) BisCem, (G4) Duo-Link, (G5) Cement Post, (G6) Variolink II, and (G7) RelyX U200. After post cementation, the specimens were sectioned perpendicularly to the root axis using a high-speed diamond disc, totaling 340 specimens. The strength values obtained in the push-out test were submitted to two-factor ANOVA and Tukey test (p = 0.05). RESULTS The root thirds (p = 0.001) and the type of cement (p = 0.001) influenced the bond strength values. The relation between these two factors was also significant (p = 0.011). CONCLUSIONS The bond strength of self-adhesive resin cements was significantly higher as compared to other cements. Besides the cervical third in roots cemented with conventional cements types presented the highest bond strength values (p < 0.05).
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Affiliation(s)
- Jefferson Ricardo Pereira
- Postgraduate Program of Health Sciences, University of Southern Santa Catarina, Tubarão, Brazil
- Corresponding author at: Rua Recife 200 - Apto 601 - Bairro: Recife, Tubarão/SC CEP 88701-420, Brazil.
| | - Saulo Pamato
- Postgraduate Program of Health Sciences, University of Southern Santa Catarina, Tubarão, Brazil
| | - Manuela Favarin Santini
- Department of Conservative Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Weber Adad Ricci
- Department of Prosthodontics, Paulista State University at Araraquara, Araraquara, Brazil
| | - Marcus Vinícius Reis Só
- Department of Conservative Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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Almeida NLM, Saldanha LL, da Silva RA, Pinke KH, da Costa EF, Porto VC, Dokkedal AL, Lara VS. Antimicrobial activity of denture adhesive associated with Equisetum giganteum- and Punica granatum-enriched fractions against Candida albicans biofilms on acrylic resin surfaces. Biofouling 2018; 34:62-73. [PMID: 29250982 DOI: 10.1080/08927014.2017.1407408] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 11/07/2017] [Indexed: 06/07/2023]
Abstract
Candida biofilms adhere to the internal surface of removable dentures, which is an etiological factor in the pathogenesis of denture stomatitis (DS). Adhesive materials are used at the base of maxillary complete dentures to improve their retention and chewing qualities. This article reports the antimicrobial activity of the enriched fractions of Equisetum giganteum and Punica granatum incorporated into a denture adhesive against C. albicans biofilm. The biofilms were induced on the surface of heat-cured acrylic resin specimens that were previously treated with a mixture of adhesive/herb extracts. The antimicrobial activity was evaluated by CFU counts, XTT reduction, and SEM and CLSM analysis. Both herb extracts amplified the anti-biofilm action of the adhesive on the acrylic resin by up to 12 h. Therefore, when these extracts were combined with COREGA®, they played a collaborative and innovative role in biofilm control and can be considered alternatives for temporary use in the treatment and/or prevention of DS.
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Affiliation(s)
- Nara Ligia Martins Almeida
- a Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry , University of São Paulo , Bauru , Brazil
| | - Luiz Leonardo Saldanha
- b Department of Botany, Institute of Biosciences , São Paulo State University (UNESP) , Botucatu , Brazil
- c Department of Biological Sciences, Faculty of Sciences , São Paulo State University (UNESP) , Bauru , Brazil
| | - Rafaela Alves da Silva
- a Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry , University of São Paulo , Bauru , Brazil
| | - Karen Henriette Pinke
- a Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry , University of São Paulo , Bauru , Brazil
| | - Eliane Ferraz da Costa
- a Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry , University of São Paulo , Bauru , Brazil
| | - Vinicius Carvalho Porto
- d Department of Prosthodontics and Periodontics, Bauru School of Dentistry , University of São Paulo , Bauru , Brazil
| | - Anne Lígia Dokkedal
- c Department of Biological Sciences, Faculty of Sciences , São Paulo State University (UNESP) , Bauru , Brazil
| | - Vanessa Soares Lara
- a Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry , University of São Paulo , Bauru , Brazil
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da Silva RA, Bernardo LP, Moreno JML, Lara VS, Porto VC. Equisetum giganteum influences the ability of Candida albicans in forming biofilms over the denture acrylic resin surface. Pharm Biol 2017; 55:1698-1702. [PMID: 28454505 PMCID: PMC6130476 DOI: 10.1080/13880209.2017.1321024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
CONTEXT Equisetum giganteum L. (Equisetaceae) is an endemic plant of Central and South America used in traditional medicine. Natural drugs have been frequently used in the treatment of a myriad of diseases, proving to be an alternative to synthetic chemicals, and have been intensively studied in the prevention of sicknesses, including oral diseases. OBJECTIVE This study evaluated the in vitro antiadherent activity of E. giganteum extract against Candida albicans biofilms. MATERIALS AND METHODS Crystal violet and colony-forming units assays were used to quantify the total biofilm biomass and biofilm living cells on a denture base acrylic resin pretreated with hydroethanolic extract of E. giganteum in different concentrations (50, 25, 16, 8, and 4 mg/mL), after 24 h of biofilm development. RESULTS Equisetum giganteum affected biofilms by reduction of biomass and living cells per area of acrylic specimens. The results revealed reduction of 15-44% of the biofilm mass and reduction of numbers of colony-forming units (CFUs) present in biofilms (79%) compared to the untreated control (CTRL/PBS). At all concentrations, it demonstrated important antiadherent activity on Candida albicans biofilms, the main microbe in denture stomatitis. DISCUSSION AND CONCLUSION The present findings show that E. giganteum antimicrobial effects may qualify the extract as a promising natural alternative for topical treatment or prevention of denture stomatitis. The usage of drugs made of natural products shows advantages in relation to synthetic drugs on the market, such as lower cost, lower toxicity, and in relation to the occurrence of microbial resistance.
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Affiliation(s)
- Rafaela Alves da Silva
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo (USP), Bauru, SP, Brazil
- CONTACT Rafaela Alves da SilvaDepartment of Stomatology (Pathology), Bauru School of Dentistry, University of São Paulo (USP), Alameda Dr. Otávio Pinheiro Brizolla, 9-75, 17012-901, Bauru/SP, Brazil
| | | | | | - Vanessa Soares Lara
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo (USP), Bauru, SP, Brazil
| | - Vinicius Carvalho Porto
- Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, SP, Brazil
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Gama MCM, de Oliveira DG, da Silva PMB, Ordinola-Zapata R, Duarte MH, Porto VC. Antifungal activity of 4% chlorhexidine and 2% sodium hypochlorite against Candida albicans biofilms. Gen Dent 2015; 63:43-47. [PMID: 26325641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The purpose of this study was to determine the antifungal efficacy of 4% chlorhexidine (CHX) and 2% sodium hypochlorite (NaOCl) on 24-hour Candida albicans biofilms. Candida albicans biofilms were developed on acrylic resin specimens, which were randomly assigned to 1 of 5 groups (n = 3 per group) exposed to 1 mL of 4% CHX for 2, 4, 6, 8, or 10 minutes. Biofilms in contact with 1 mL of distilled water or 2% NaOCl for 10 minutes were used as positive and negative controls (n = 3 per group), respectively. Specimens were analyzed with confocal laser scanning microscopy and a cell viability assay technique. The biovolume of the live subpopulation of the biofilm was calculated with biofilm image analysis software. Statistically significant differences (P < 0.05) in the biovolume of surviving cells were found among the positive control group and the 4-, 6-, 8-, and 10-minute experimental periods. The biovolumes found after 6-10 minutes of exposure to chlorhexidine were significantly different (P < 0.05) from the biovolume after 2 minutes of exposure. The most effective decrease of the biovolume was found after the use of the negative control (sodium hypochlorite) solution. Exposure to 10 minutes of 2% NaOCl removed fungal cells more effectively than all the experimental groups (P < 0.05). The 4% CHX solution showed an antifungal activity against C albicans biofilms but failed to decrease the biovolume to the levels of 2% NaOCl, which eliminated viable cells more effectively and appeared to be more effective in disrupting the attached biofilms.
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Lie Tobouti P, Casaroto AR, de Almeida RSC, de Paula Ramos S, Dionísio TJ, Porto VC, Santos CF, Lara VS. Expression of Secreted Aspartyl Proteinases in an Experimental Model of Candida albicans
-Associated Denture Stomatitis. J Prosthodont 2015; 25:127-34. [DOI: 10.1111/jopr.12285] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/01/2014] [Indexed: 01/12/2023] Open
Affiliation(s)
- Priscila Lie Tobouti
- Department of Stomatology (Oral Pathology), Bauru School of Dentistry; University of São Paulo; Bauru Brazil
| | - Ana Regina Casaroto
- Department of Stomatology (Oral Pathology), Bauru School of Dentistry; University of São Paulo; Bauru Brazil
| | | | | | - Thiago José Dionísio
- Department of Biological Sciences, Bauru School of Dentistry; University of São Paulo; Bauru Brazil
| | - Vinicius Carvalho Porto
- Department of Prosthodontics, Bauru School of Dentistry; University of São Paulo; Bauru Brazil
| | - Carlos Ferreira Santos
- Department of Biological Sciences, Bauru School of Dentistry; University of São Paulo; Bauru Brazil
| | - Vanessa Soares Lara
- Department of Stomatology (Oral Pathology), Bauru School of Dentistry; University of São Paulo; Bauru Brazil
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Rodríguez Acosta EJT, da Silva PMB, Jacobina M, Lara VS, Neppelenbroek KH, Porto VC. Candida albicans adherence to denture base material: chemical disinfection and the effect of acquired salivary pellicle formation. J Prosthodont 2014; 24:200-6. [PMID: 25142962 DOI: 10.1111/jopr.12197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2014] [Indexed: 11/30/2022] Open
Abstract
PURPOSE The aim of this study was to evaluate the effect of 1% sodium hypochlorite (H1%) and 4% chlorhexidine gluconate (CG4%) on the adhesion of Candida albicans to denture base acrylic resins, as well as to verify the effect of the acquired salivary pellicle (ASP) formation on this process. MATERIALS AND METHODS A total of 300 acrylic specimens were immersed in distilled water (control) (n = 100), H1% (n = 100), or CG4% (n = 100) for 30 days. Twenty specimens were used in each experimental period (0, 1, 7, 15, 30 days). At the end of disinfection testing periods, 10 specimens of each group were exposed to human whole saliva to simulate ASP formation, and then all specimens were incubated with C. albicans ATTC 90028. Microorganism adhesion was analyzed by fluorescence microscopy, after staining with Acridine orange. RESULTS In the 30(th) disinfection cycle in relation to baseline, the H1% or CG4%, without ASP formation, reduced the C. albicans adhesion by approximately 80%; however, with ASP, this reduction after disinfection with H1% was higher (88%). The presence of ASP resulted in higher reduction of adhered fungal cells in comparison to resin without ASP, at the 1(st) H1% or CG4% disinfection cycle, as well as at 30(th) H1% disinfection cycles. CONCLUSIONS Our results suggest that the presence of saliva might influence the adhesion of C. albicans and improve the effectiveness of methods to reduce fungal adhesion.
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Bueno MG, Urban VM, Barbério GS, da Silva WJ, Porto VC, Pinto L, Neppelenbroek KH. Effect of antimicrobial agents incorporated into resilient denture relines on the Candida albicans biofilm. Oral Dis 2013; 21:57-65. [PMID: 24219354 DOI: 10.1111/odi.12207] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 10/19/2013] [Accepted: 11/01/2013] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The antimicrobial action of five drugs incorporated in temporary denture relines on the fungal biofilm was evaluated. MATERIALS AND METHODS A Candida albicans biofilm (SC5314) was formed on specimens (10 × 1 mm) of materials (Trusoft and Softone) modified or not (control) by the drugs (nystatin, miconazole, ketoconazole, itraconazole, and chlorhexidine diacetate). Cell viability was determined spectrophotometrically by the tetrazolium salt reduction assay (XTT) after 24 h, 48 h, and 7 and 14 days of incubation. The minimum inhibitory concentrations (MICs) were those which inhibited 90% or more of fungal growth. Fungal susceptibility was confirmed by confocal laser scanning microscopy analysis. RESULTS The MICs of drugs incorporated in the materials were 0.032, 0.256, 0.128, 0.256, and 0.064 g ml(-1) for nystatin, miconazole, ketoconazole, itraconazole, and chlorhexidine, respectively. Images from nystatin, chlorhexidine, and ketoconazole demonstrated no viable cells. CONCLUSIONS The antimicrobials incorporated in the resilient materials inhibited fungal growth during 14 days, with lower MICs for nystatin and chlorhexidine.
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Affiliation(s)
- M G Bueno
- Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
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Silva AMJD, Guerrero JG, Pinto LDR, Carvalho RM, Porto VC. Evaluation of surface roughness and color change of a light-cured and a heat-cured acrylic resin employed for fabrication of prosthetic bases after exposure to different types of disinfectants. ACTA ACUST UNITED AC 2013. [DOI: 10.19177/jrd.v1e32013199-209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study evaluated the changes in surface roughness and color of materials employed in the fabrication of prosthetic bases after immersion in disinfectants. Sixty specimens were fabricated using a round matrix; half of the specimens were fabricated with a heat-cured composite resin, and the other half with a light-cured composite resin. After polishing, the specimens were stored in distilled water at 37ºC from 48 to 52 hours, and then submitted to initial tests of surface roughness and color. The specimens were randomly divided into three groups and immersed in the following chemicals: G1 (1% sodium hypochlorite for 10 minutes), G2 (5.25% sodium hypochlorite for 5 minutes) and G3 (2% acidic glutaraldehyde for 10 minutes). The surface roughness and color tests were once again performed and the specimens were then stored in deionized water at 37ºC for 6 days. On the seventh day, the immersion was repeated; this procedure was performed at every 7 days during 1 month and the tests were repeated after the fourth week. The results were submitted to three-way analysis of variance (ANOVA) and to the Tukey test. Within the same groups of specimens, statistically significant differences were only observed for the light-cured resin, which presented slight changes after exposure to 5.25% sodium hypochlorite and 2% glutaraldehyde for the interval ΔE2, which indicates differences in reading values between immersion after 30-day storage and the first immersion in the disinfectants.
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Gasparoto TH, de Oliveira CE, Vieira NA, Porto VC, Gasparoto CT, Campanelli AP, Lara VS. The pattern recognition receptors expressed on neutrophils and the associated cytokine profile from different aged patients with Candida-related denture stomatitis. Exp Gerontol 2012; 47:741-8. [PMID: 22796226 DOI: 10.1016/j.exger.2012.07.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Revised: 06/21/2012] [Accepted: 07/03/2012] [Indexed: 10/28/2022]
Abstract
This study evaluated the expression of pattern recognition receptors (PRRs) and activation factors associated with salivary and blood neutrophils from different aged patients diagnosed with Candida-related denture stomatitis (DS). Expression of neutrophil PRRs was determined by flow cytometry and immunofluorescence, and the levels of selected cytokines that influence immune activation were determined by ELISA. The salivary (but not the serum derived) neutrophils of individuals with DS were found to have an increased expression of CD69 regardless of the age of the patient compared to patients without DS. However, these salivary neutrophils had a lower expression of CD66b and CD64. Expression of TLR2 was lower on the salivary- and serum-derived neutrophils from elderly individuals compared to the neutrophils of younger subjects, regardless of whether the individual had DS. Salivary interleukin (IL)-4 was elevated in both of the elderly subject groups (with or without DS). Only elderly DS patients were observed to have increased serum IL-4 levels and reduced salivary IL-12 levels. Younger DS patients showed an increase in salivary IL-10 levels, and both the saliva and the serum levels of IFN-γ were increased in all of the younger subjects. Our data demonstrated that changes in both the oral immune cells and the protein components could be associated with DS. Furthermore, changes in the blood-derived factors were more associated with age than DS status.
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Affiliation(s)
- Thaís Helena Gasparoto
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, SP, Brazil.
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Gasparoto TH, Vieira NA, Porto VC, Campanelli AP, Lara VS. Differences between salivary and blood neutrophils from elderly and young denture wearers. J Oral Rehabil 2011; 38:41-51. [PMID: 20663018 DOI: 10.1111/j.1365-2842.2010.02126.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We previously showed that neutrophils from patients with Candida-related denture stomatitis exhibited damaged function, and the advance in age intensified this condition. Because such alterations had been determined in elderly people that were not denture wearers, the purpose of this study was to clarify functional and phenotypic characteristics of neutrophils from elderly denture wearers (EDW) and young denture wearers (YDW) without oral lesion. We enrolled 20 denture wearers (12 EDW and 8 YDW) and determined the positivity of Candida species on maxillary prosthesis and palate. Additionally, blood and salivary neutrophils were evaluated. Furthermore, cytokines and chemokines salivary levels were detected. YDW presented higher positivity of Candida albicans than elderly ones. However, blood neutrophils from EDW expressed less CXCR1, CD62L and CD11b and had lower C. albicans phagocytosis than YDW. Although myeloperoxidase and elastase activity was significantly higher in C. albicans-stimulated blood neutrophils from elderly, they produced high levels of IL-10 and low levels of Granulocyte macrophage-colony stimulating factor (GM-CSF). Despite apoptosis rate of salivary neutrophils was enhanced, these cells were at a high number in YDW. GM-CSF and IL10 were lower in saliva from elderly group. These data confirmed that ageing affects blood and salivary neutrophils and could predispose elderly to persistent oral infections.
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Affiliation(s)
- T H Gasparoto
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil.
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de Oliveira CE, Gasparoto TH, Dionísio TJ, Porto VC, Vieira NA, Santos CF, Lara VS. Candida albicans and denture stomatitis: evaluation of its presence in the lesion, prosthesis, and blood. INT J PROSTHODONT 2010; 23:158-159. [PMID: 20305856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Denture stomatitis is a primarily oral disease that affects denture wearers. The presence of Candida albicans in the palatal mucosa, on the internal surface of the maxillary denture, and in the blood of patients with denture stomatitis was evaluated. Although the results did not show C albicans in the bloodstream of patients, a strong relationship between denture stomatitis and Candida sp was confirmed for both the palatal mucosa and maxillary denture.
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Affiliation(s)
- Carine Ervolino de Oliveira
- Department of Stomatology, Pathology, Bauru School of Dentistry, University of São Paulo, and Laboratory of Clinical Analysis, Hospital for Rehabilitation of Craniofacial Anomalies, Bauru, SP, Brazil
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Gasparoto TH, Dionísio TJ, de Oliveira CE, Porto VC, Gelani V, Santos CF, Campanelli AP, Lara VS. Isolation of Candida dubliniensis from denture wearers. J Med Microbiol 2009; 58:959-962. [DOI: 10.1099/jmm.0.008391-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Candida albicans is considered the most important Candida species able to cause oral infections in denture wearers. In recent years, Candida dubliniensis has emerged as a pathogenic yeast in humans. The close phenotypic similarities of C. albicans and C. dubliniensis have led to the misidentification of these species. In this work, our aim was to verify through PCR the presence of C. dubliniensis in palate and maxillary denture samples from 112 denture wearers presenting with or without denture-related stomatitis (DRS). C. dubliniensis was isolated at low rates from both palate (5.3 % and 10.7 %) and maxillary denture (5.3 % and 8.9 %) samples from wearers regardless of the presence of the disease. However, when C. dubliniensis was detected in individuals with DRS, it was always associated with C. albicans. In addition, our results showed that C. albicans was the most commonly identified candidal species in maxillary denture and hard palate samples from DRS patients (78.5 % and 89.2 %, respectively) as well as from controls (31.2 % and 28.5 %, respectively). In conclusion, C. dubliniensis was detected in the oral environment of denture wearers. The association of C. dubliniensis with C. albicans occurred in approximately 10 % of the DRS cases.
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Affiliation(s)
- Thaís Helena Gasparoto
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Thiago José Dionísio
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Carine Ervolino de Oliveira
- Department of Stomatology (Pathology), Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Vinicius Carvalho Porto
- Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Valéria Gelani
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Carlos Ferreira Santos
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Ana Paula Campanelli
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Vanessa Soares Lara
- Department of Stomatology (Pathology), Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
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Gasparoto TH, Vieira NA, Porto VC, Campanelli AP, Lara VS. Ageing exacerbates damage of systemic and salivary neutrophils from patients presenting Candida-related denture stomatitis. Immun Ageing 2009; 6:3. [PMID: 19327169 PMCID: PMC2669447 DOI: 10.1186/1742-4933-6-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2008] [Accepted: 03/28/2009] [Indexed: 01/12/2023]
Abstract
Background Ageing leads to a decline in the function of the immune system, increasing the body's susceptibility to infections through the impairment of T-cells, macrophages, neutrophils and dendritic cells Denture stomatitis is a primary oral disease affecting elderly denture wearers. The major etiologic factor involved in this pathology is the infection by Candida albicans, an opportunistic pathogen that causes local and disseminated diseases in immunosuppressed humans. Neutrophils play a critical role in the immune response against C. albicans and are continually present in the salivary fluid and in the blood. The aim of this study was to determine ageing-related changes in salivary and blood neutrophils and their potential implications in Candida-related denture stomatitis. Results Our results showed a lower number of neutrophils in the saliva from patients presenting Candida-related denture stomatitis in comparison to their matched controls. Furthermore, fewer neutrophils were isolated from the saliva of aged control individuals in comparison to matched younger subjects. CXCR1, CD62L and CD11b expression were significantly greater on systemic neutrophils from younger control individuals. Elderly individuals showed more apoptotic salivary neutrophils and lower GM-CSF levels than younger ones, regardless of the occurrence of Candida infection. On the other hand, CXCL-8 concentrations were higher in the saliva from elderly individuals. Besides, TNF-α was detected at elevated levels in the saliva from infected elderly subjects. Salivary neutrophils from elderly and young patients presented impaired phagocytic activity against C. albicans. However, just systemic neutrophils from elderly showed decreased phagocytosis when compared to the younger ones, regardless of the occurrence of infection. In addition, neutrophils from aged individuals and young patients presented low fungicidal activity. Conclusion The data suggests that the Candida related-denture stomatitis is associated to neutrophils function deficiency, and ageing drastically appears to alter important characteristics of such cells, facilitating the establishment of this infection.
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Affiliation(s)
- Thaís Helena Gasparoto
- Department of Biological Sciences (Microbiology and Immunology), Bauru Dental School, Bauru, SP, Brazil.
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