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Influence of Propolis Extract (Caffeic Acid Phenethyl Ester) Addition on the Candida albicans Adhesion and Surface Properties of Autopolymerized Acrylic Resin. Int J Dent 2022; 2022:6118660. [PMID: 35572357 PMCID: PMC9095368 DOI: 10.1155/2022/6118660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 04/20/2022] [Indexed: 11/18/2022] Open
Abstract
Background. Denture stomatitis has been linked to the adhesion and proliferation of Candida albicans (C. albicans) on denture bases, which is a common and recurrent problem in denture wearers. The current study aimed to evaluate the effect of incorporating caffeic acid phenethyl ester (CAPE) into autopolymerized polymethyl methacrylate (PMMA) acrylic resin on C. albicans adhesion, surface roughness, and hardness as well as the correlation between tested properties. Methods. Autopolymerized acrylic resin discs (N = 100, 50/C. albicans adhesion; 50/C. albicans surface roughness and hardness test) were fabricated in dimensions 15 × 2.5 mm, samples were categorized into 5 groups (n = 10) based on CAPE concentrations; unmodified (control), 2.5, 5, 10 and 15% wt of acrylic powder. Specimens were stored in distilled water for 48 h at 37°C. C. albicans adhesion was evaluated via direct culture method. Profilometer and Vickers hardness tester were used for surface roughness and hardness measurement. Post hoc Tukey’s HSD with ANOVA test was performed to compare the difference of means amongst groups.
values were statistically significant at ≤0.05. Results. The addition of 2.5% of CAPE to PMMA has significantly reduced C. albicans counts in comparison to higher CAPE concentrations (
). As for surface roughness, it was noticed that it increased with increased CAPE concentrations (
). While surface hardness decreased as CAPE concentrations increased (
). All tested properties showed a significant difference amongst groups for C. albicans colony count and surface parameters. Conclusion. The addition of 2.5% of CAPE to PMMA acrylic resin significantly decreased C. albicans count compared to higher CAPE concentrations. CAPE can be used as an adjunct in the prevention of DS by incorporating in the PMMA acrylic resin.
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Wan P, Cui H, Zhou W, Fu W, Yang F, Wang Z, Du X, Chu PK, Yu XF. A water-soluble membrane for SARS-CoV-2 viral nucleic acid sampling and detection. NANOSCALE 2021; 13:18084-18088. [PMID: 34730160 DOI: 10.1039/d1nr05689a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This communication describes a novel water-soluble membrane prepared from chitosan intended for SARS-CoV-2 viral nucleic acid collection and detection. The CSH membrane formed from nanofibers shows promising potential in the quantitative determination of the SARS-CoV-2 viral nucleic acids at a concentration of 102 copies per L in air. The sponge-like structure which allows gas to pass through for collection of viral nucleic acids potentially provides simple, fast, and reliable sampling as well as detection of various types of airborne viruses.
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Affiliation(s)
- Peng Wan
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China.
- Shenzhen Water Planning & Design Institute Co., Ltd, Shenzhen 518001, China
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
- Guangdong Provincial Engineering and Technology Research Center for Water Affairs Big Data and Water Ecology, Shenzhen, 518001
| | - Haodong Cui
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China.
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Wenhua Zhou
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China.
| | - Wen Fu
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China.
| | - Fan Yang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China.
| | - Zhongying Wang
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xuemin Du
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China.
| | - Paul K Chu
- Department of Physics, Department of Materials Science and Engineering, and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
| | - Xue-Feng Yu
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China.
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Aldegheishem A, AlDeeb M, Al-Ahdal K, Helmi M, Alsagob EI. Influence of Reinforcing Agents on the Mechanical Properties of Denture Base Resin: A Systematic Review. Polymers (Basel) 2021; 13:polym13183083. [PMID: 34577983 PMCID: PMC8470293 DOI: 10.3390/polym13183083] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/22/2021] [Accepted: 08/30/2021] [Indexed: 12/29/2022] Open
Abstract
Knowledge about the influence of fillers in denture base resin is vague. This systematic review aimed to report the reinforcing effect of fillers on the mechanical properties of denture base resin by following PRISMA guidelines. Two electronic databases (Pubmed/Medline & Web of Science) were searched for articles using the keywords: fibers in denture base, fillers in denture base, and reinforcement of denture base. Laboratory studies complying with the inclusion criteria were reviewed according to the set protocol. The established focus question was: "Do reinforcing fillers positively influence the mechanical properties of polymethyl methacrylate (PMMA) heat polymerized denture base material?" A total of twenty-nine relevant papers qualified for final inclusion. Of these, 24 were determined to have a moderate risk of bias. Micron or nano-sized metal/metal oxides particles and glass fibers were the frequently used reinforcing agents. The trend of evaluating fractural strength (FS) was common. Most of the studies limited the use of reinforcing agents up to 5 wt.%. FS, fracture toughness (FT), and impact strength (IS) tend to increase if the fillers are chemically bonded and well-dispersed in denture base resin. Though fillers with a higher elastic modulus increase the hardness of the reinforced denture base resin, they compromise other mechanical properties. Well-dispersed lower filler loading PMMA denture base resin can enhance the FS, FT, and other related mechanical properties.
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Affiliation(s)
- Alhanoof Aldegheishem
- Clinical Dental Sciences Department, College of Dentistry, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia;
| | - Modhi AlDeeb
- Department of Prosthodontic Dental Science, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Khold Al-Ahdal
- Department of Restorative Dentistry, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Mohammad Helmi
- Periodontics and Community Dentistry Department, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Eman I. Alsagob
- Preventive Dental Sciences Department, College of Dentistry, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
- Correspondence: or ; Tel.: +966-555-178-877
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Gad MM, Al-Sunni M, Al-Shayeb A, Al-Namsy R, Al-Naser Z, Q Khan S. The in-vitro effects of white henna addition on the Candida albicans adhesion and physical properties of denture base resin. Eur Oral Res 2021; 55:86-93. [PMID: 34250475 PMCID: PMC8244940 DOI: 10.26650/eor.20210033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 09/18/2020] [Accepted: 12/22/2020] [Indexed: 12/02/2022] Open
Abstract
Purpose: This in-vitro study evaluated and compared the effect of white henna (WH) and
natural henna (NH) addition on Candida albicans adhesion and physical properties
of the denture base material. Materials and methods: A total of 243 acrylic resin specimens (9 per group) were divided as follows:
81 for flexural strength, 81 for Candida albicans adherence test, and 81 for
surface roughness, translucency, and hardness. Heat-polymerized acrylic
resin specimens were prepared by adding 0.5, 1.0, 1.5, or 2.0 wt% of WH or NH.
Candida albicans adhesion was determined using direct culture and slide count
methods. Flexural strength, surface roughness, hardness, and translucency were
measured using the three-point bending test, profilometer, Vickers hardness test,
and spectrophotometer, respectively. ANOVA and post hoc Tukey’s tests were
performed for data analysis. Results: Addition of 0.5% WH, 1% WH, and 0.5% NH to denture base resin significantly
decreased Candida albicans adhesion (p<0.05). WH and NH significantly decreased
the flexural strength and translucency, except 0.5% WH, and significantly increased
surface roughness, except 0.5% WH and 0.5% NH. WH addition showed nonsignificant differences in the hardness, while NH addition significantly decreased
hardness (p<0.05). Conclusion: Addition of WH and NH decreased C. albicans adhesion to PMMA denture base resin.
However, flexural strength, translucency, and surface roughness were adversely
affected, particularly at higher concentrations. Hardness was reduced with NH only.
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Affiliation(s)
- Mohammed M Gad
- Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Mouna Al-Sunni
- College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam,Saudi Arabia
| | - Abrar Al-Shayeb
- College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam,Saudi Arabia
| | - Reyam Al-Namsy
- College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam,Saudi Arabia
| | - Zainab Al-Naser
- College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam,Saudi Arabia
| | - Soban Q Khan
- Department of Dental Education, College of Dentistry, Imam Abdulrahman Bin Faisal University, Saudi Arabia
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Rakhimova M, Faizulloev E, Mametova A, Askalieva N, Gafforova H, Dzhumanazarova A, Zhakypova G, Abdullaeva Z. Complex formation in the Fe(II)-Fe(III)-acrylamide–water system and chemical models. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1766682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- M. Rakhimova
- Department of Inorganic Chemistry, Tajikistan National University, Dushanbe, Tajikistan
| | - E. Faizulloev
- Department of Inorganic Chemistry, Tajikistan National University, Dushanbe, Tajikistan
| | - A. Mametova
- Medical Faculty, Department of Clinical Biochemistry and Pathophysiology, Jolon Mamytov Campus, Osh State University, Osh, Kyrgyzstan
| | - N. Askalieva
- Department of Biochemistry and General Bioorganic Chemistry, Kyrgyz State Medical Academy, Bishkek, Kyrgyzstan
| | - H. Gafforova
- Medical Faculty, Department of Clinical Biochemistry and Pathophysiology, Jolon Mamytov Campus, Osh State University, Osh, Kyrgyzstan
| | - A. Dzhumanazarova
- Institute of Chemistry and Phytotechnology, National Academy of Sciences of Kyrgyz Republic, Bishkek, Kyrgyzstan
| | - G. Zhakypova
- Medical Faculty, Department of Pharmaceutical Chemistry and Drug Technology, Jolon Mamytov Campus, Osh State University, Osh, Kyrgyzstan
| | - Z. Abdullaeva
- International Medical Faculty, Jolon Mamytov Campus, Osh State University, Osh, Kyrgyzstan
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HAYRAN Y, KESKIN Y. Flexural strength of polymethyl methacrylate copolymers as a denture base resin. Dent Mater J 2019; 38:678-686. [DOI: 10.4012/dmj.2018-393] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Yeliz HAYRAN
- Tokat Gaziosmanpasa University, Department of Prosthodontics, Faculty of Dentistry
| | - Yasemin KESKIN
- Ankara University, Department of Prosthodontics, Faculty of Dentistry
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Gad MM, Al-Thobity AM, Fouda SM, Näpänkangas R, Raustia A. Flexural and Surface Properties of PMMA Denture Base Material Modified with Thymoquinone as an Antifungal Agent. J Prosthodont 2018; 29:243-250. [PMID: 30178899 DOI: 10.1111/jopr.12967] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/27/2018] [Indexed: 12/01/2022] Open
Abstract
PURPOSE To evaluate the effect of addition of different concentrations of thymoquinone (TQ) on the flexural strength, elastic modulus, surface roughness, and hardness of PMMA denture base material. MATERIALS AND METHODS A total of 160 rectangular specimens were prepared from heat-polymerized acrylic resin, with dimensions of 65 × 10 × 2.5 mm3 for flexural strength testing and 10 × 20 × 3 mm3 for surface property testing. The specimens were divided into eight groups of 20 specimens: one control group without addition of TQ and seven test groups prepared by adding TQ to acrylic powder in concentrations of 0.5, 1, 1.5, 2, 2.5, 3, and 5 wt%. The polymer was added to the monomer before being mixed, packed, and processed using the conventional water bath method. A universal testing machine was used to measure flexural strength and elastic modulus. A profilometer and a Vickers hardness tester were used to measure surface roughness and hardness, respectively. One-way ANOVA and the Tukey-Kramer multiple-comparison test were used for statistical analysis, with statistical significance at p ≤ 0.05. RESULTS Addition of TQ to PMMA denture base material significantly decreased flexural strength and elastic modulus at high concentrations (p < 0.01), while no significant differences were observed at low concentrations (0.5%, 1% TQ) in comparison with the control group. At high TQ concentrations, surface roughness increased while hardness decreased (p < 0.0001), and no significant differences were observed at low concentrations (0.5%, 1% TQ) in comparison with the control group. The most favorable addition values were 0.5% and 1% TQ in all TQ groups. CONCLUSIONS Addition of TQ did not affect the flexural and surface properties of PMMA denture base material at low concentrations (0.5%, 1% TQ) and could be incorporated into PMMA denture base material as an antifungal agent.
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Affiliation(s)
- Mohammed M Gad
- Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Ahmad M Al-Thobity
- Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Shaimaa M Fouda
- Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Ritva Näpänkangas
- Research Unit of Oral Health Sciences, Faculty of Medicine, University of Oulu, Oulu, Finland.,Medical Research Center, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Aune Raustia
- Research Unit of Oral Health Sciences, Faculty of Medicine, University of Oulu, Oulu, Finland.,Medical Research Center, Oulu University Hospital and University of Oulu, Oulu, Finland
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Duymus ZY, Ozdogan A, Ulu H, Ozbayram O. Evaluation the Vickers Hardness of Denture Base Materials. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/ojst.2016.64014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nam KY. Characterization and bacterial anti-adherent effect on modified PMMA denture acrylic resin containing platinum nanoparticles. J Adv Prosthodont 2014; 6:207-14. [PMID: 25006385 PMCID: PMC4085245 DOI: 10.4047/jap.2014.6.3.207] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Revised: 03/03/2014] [Accepted: 03/11/2014] [Indexed: 11/23/2022] Open
Abstract
PURPOSE This study characterized the synthesis of a modified PMMA (Polymethyl methacrylate) denture acrylic loading platinum nanoparticles (PtN) and assessed its bacterial inhibitory efficacy to produce novel antimicrobial denture base material. MATERIALS AND METHODS Polymerized PMMA denture acrylic disc (20 mm × 2 mm) specimens containing 0 (control), 10, 50, 100 and 200 mg/L of PtN were fabricated respectively. The obtained platinum-PMMA nanocomposite (PtNC) was characterized by TEM (transmission electron microscopy), SEM/EDX (scanning electron microscope/energy dispersive X-ray spectroscopy), thermogravimetric and atomic absorption spectrophotometer analysis. In antimicrobial assay, specimens were placed on the cell culture plate, and 100 µL of microbial suspensions of S. mutans (Streptococcus mutans) and S. sobrinus (Streptococcus sobrinus) were inoculated then incubated at 37℃ for 24 hours. The bacterial attachment was tested by FACS (fluorescence-activated cell sorting) analysis after staining with fluorescent probe. RESULTS PtN were successfully loaded and uniformly immobilized into PMMA denture acrylic with a proper thermal stability and similar surface morphology as compared to control. PtNC expressed significant bacterial anti-adherent effect rather than bactericidal effect above 50 mg/L PtN loaded when compared to pristine PMMA (P=.01) with no or extremely small amounts of Pt ion eluted. CONCLUSION This is the first report on the synthesis and its antibacterial activity of Pt-PMMA nanocomposite. PMMA denture acrylic loading PtN could be a possible intrinsic antimicrobial denture material with proper mechanical characteristics, meeting those specified for denture bases. For clinical application, future studies including biocompatibility, color stability and warranting the long-term effect were still required.
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Affiliation(s)
- Ki-Young Nam
- Department of Dentistry, Dongsan Medical Center, School of Medicine, Keimyung University, Daegu, Republic of Korea
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Pinheiro JB, Reis AC, Pisani MX, Leite VMF, Souza RF, Paranhos HFO, Cláudia Helena SL. Microstructural characterization and evaluation of the properties of polymeric materials for maxillofacial prosthetics. J Med Eng Technol 2014; 38:67-75. [DOI: 10.3109/03091902.2013.864715] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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