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Mu R, Yang L, Wang X, Yang B, Li J, Wang A, Zhang G, Sun C, Wu Y, Yu B, Li B. Mechanically Stable and Biocompatible Polymer Brush Coated Dental Materials with Lubricious and Antifouling Properties. Macromol Biosci 2024:e2400194. [PMID: 39073313 DOI: 10.1002/mabi.202400194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 06/24/2024] [Indexed: 07/30/2024]
Abstract
Surface modification plays a crucial role in enhancing the functionality of implanted interventional medical devices, offering added advantages to patients, particularly in terms of lubrication and prevention of undesired adsorption of biomolecules and microorganisms, such as proteins and bacteria, on the material surfaces. Utilizing polymer brushes for surface modification is currently a promising approach to maintaining the inherent properties of materials while introducing new functionalities to surfaces. Here, surface-initiated atom transfer radical polymerization (SI-ATRP) technology to effectively graft anionic, cationic, and neutral polymer brushes from a mixed silane initiating layer is employed. The presence of a polymer brush layer significantly enhances the lubrication performance of the substrates and ensures a consistently low coefficient of friction over thousands of friction cycles in aqueous environments. The antimicrobial efficacy of polymer brushes is evaluated against gram-positive Staphylococcus aureus (S. aureus) and gram-negative Escherichia coli (E. coli). It is observed that polym er brushes grafted to diverse substrate surfaces displays notable antibacterial properties, effectively inhibiting bacterial attachment. Furthermore, the polymer brush layer shows favorable biocompatibility and anti-inflammatory characteristics, which shows potential applications in dental materials, and other fields such as catheters and food packaging.
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Affiliation(s)
- Rong Mu
- School of Chemical Engineering, Northwest Minzu University, Lanzhou, 730000, China
| | - Ling Yang
- School of Stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Xinyue Wang
- School of Stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Binrui Yang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Jia Li
- School of Chemical Engineering, Northwest Minzu University, Lanzhou, 730000, China
| | - Aijun Wang
- School of Chemical Engineering, Northwest Minzu University, Lanzhou, 730000, China
| | - Guorui Zhang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Chufeng Sun
- School of Chemical Engineering, Northwest Minzu University, Lanzhou, 730000, China
| | - Yang Wu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai, 264000, China
| | - Bo Yu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Bin Li
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai, 264000, China
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Han W, Zhang R, Liu S, Zhang T, Yao X, Cao Y, Li J, Liu X, Li B. Recent Advances in Whiskers: Properties and Clinical Applications in Dentistry. Int J Nanomedicine 2024; 19:7071-7097. [PMID: 39045343 PMCID: PMC11265390 DOI: 10.2147/ijn.s471546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Accepted: 06/22/2024] [Indexed: 07/25/2024] Open
Abstract
Whiskers are nanoscale, high-strength fibrous crystals with a wide range of potential applications in dentistry owing to their unique mechanical, thermal, electrical, and biological properties. They possess high strength, a high modulus of elasticity and good biocompatibility. Hence, adding these crystals to dental composites as reinforcement can considerably improve the mechanical properties and durability of restorations. Additionally, whiskers are involved in inducing the value-added differentiation of osteoblasts, odontogenic osteocytes, and pulp stem cells, and promoting the regeneration of alveolar bone, periodontal tissue, and pulp tissue. They can also enhance the mucosal barrier function, inhibit the proliferation of tumor cells, control inflammation, and aid in cancer prevention. This review comprehensively summarizes the classification, properties, growth mechanisms and preparation methods of whiskers and focuses on their application in dentistry. Due to their unique physicochemical properties, excellent biological properties, and nanoscale characteristics, whiskers show great potential for application in bone, periodontal, and pulp tissue regeneration. Additionally, they can be used to prevent and treat oral cancer and improve medical devices, thus making them a promising new material in dentistry.
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Affiliation(s)
- Wenze Han
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, 030001, People’s Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001, Shanxi, People’s Republic of China
| | - Ran Zhang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, 030001, People’s Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001, Shanxi, People’s Republic of China
| | - Shuzhi Liu
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, 030001, People’s Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001, Shanxi, People’s Republic of China
| | - Tong Zhang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, 030001, People’s Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001, Shanxi, People’s Republic of China
| | - Xuemin Yao
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, 030001, People’s Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001, Shanxi, People’s Republic of China
| | - Yuxin Cao
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, 030001, People’s Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001, Shanxi, People’s Republic of China
| | - Jiadi Li
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, 030001, People’s Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001, Shanxi, People’s Republic of China
| | - Xiaoming Liu
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, 030001, People’s Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001, Shanxi, People’s Republic of China
| | - Bing Li
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, 030001, People’s Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001, Shanxi, People’s Republic of China
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Yadfout A, Asri Y, Merzouk N, Regragui A. Denture Base Resin Coated with Titanium Dioxide (TiO 2): A Systematic Review. Int J Nanomedicine 2023; 18:6941-6953. [PMID: 38026530 PMCID: PMC10676651 DOI: 10.2147/ijn.s425702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
Background The main objective of this systematic review was to evaluate the effect of coating with titanium dioxide nanoparticles (TiO2 nanoparticle) on the surface condition of removable acrylic resin prosthetic base materials. Methods Our review is registered in the PROSPERO database under the identification code CRD42023397170. Electronic database searches of PubMed, Scopus and Science Direct including studies from January 2009 to January 2023 were conducted and supplemented with manual searches. Research questions were generated in accordance with the PICO strategy. The modified Consolidated Standards of Reporting Trials (CONSORT) checklist was used to evaluate the quality of the selected studies. Results Since the included studies were variable in design, a meta-analysis was not performed. The electronic searches retrieved 29 references that met the eligibility criteria, among which 5 studies matched the inclusion criteria for this review. Significant differences were detected between the TiO2 NP-coated and uncoated groups. The available data indicate that TiO2 NP coating elicits antimicrobial activity and improves the wear resistance of polymethylmethacrylate (PMMA) surfaces. Moreover, the nanoparticles provide high levels of glossiness and decelerate the process of color change of heat-cured acrylic resin, thus increasing the lifespan of dentures. Conclusion The collective results clearly indicate that TiO2 nanoparticle coating induces alterations in the surface properties of pure PMMA, enhancing the mechanical, physical and biological characteristics of the denture base material. Further studies are essential to identify the optimal thickness of coating and concentrations of nanoparticles for clinical applications.
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Affiliation(s)
- Asmae Yadfout
- Department of Removable Prosthodontics, Faculty of Dentistry, Mohammed V University, Rabat, Morocco
| | - Yousra Asri
- Department of Removable Prosthodontics, Faculty of Dentistry, Mohammed V University, Rabat, Morocco
| | - Nadia Merzouk
- Department of Removable Prosthodontics, Faculty of Dentistry, Mohammed V University, Rabat, Morocco
| | - Anissa Regragui
- Department of Removable Prosthodontics, Faculty of Dentistry, Mohammed V University, Rabat, Morocco
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Kaurani P, Hindocha AD, Jayasinghe RM, Pai UY, Batra K, Price C. Effect of addition of titanium dioxide nanoparticles on the antimicrobial properties, surface roughness and surface hardness of polymethyl methacrylate: A Systematic Review. F1000Res 2023; 12:577. [PMID: 37424742 PMCID: PMC10323281 DOI: 10.12688/f1000research.130028.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/29/2023] [Indexed: 07/11/2023] Open
Abstract
Background: Polymethyl Methacrylate (PMMA) denture-base resins have poor surface properties that facilitates microbial adhesion causing denture stomatitis. This systematic review aims to evaluate the effect of different sizes and percentages of titanium dioxide nanoparticles (TiO2NP) on the antimicrobial property, surface roughness and surface hardness of PMMA denture base resin. Methods: A systematic search of English peer-reviewed articles, clinical trial registries, grey literature databases and other online sources was performed using the PRISMA-S Guidelines for In-Vivo and In-Vitro studies. Qualitative data synthesis was performed to analyse sample dimensions, acrylic used, treatments of nanoparticles, methods used for testing and effect of size and percentage of nanoparticle. Risk of bias assessment was done using modified Cochrane risk of bias tool. Results: Out of 1376 articles, 15 were included. TiO 2NP of size less than 30 nm was most frequently used. Both antimicrobial property and surface hardness improved irrespective of the size of the added TiO 2NP. Three studies reported increase in the surface roughness with less than 50 nm TiO 2NP. 3% TiO 2NP was most frequently used. On increasing the percentage, three studies reported an increase in antimicrobial property, while two studies found no change. With TiO 2NP greater than or equal to 3%, six studies reported an increase in surface hardness, while two reported increase in surface roughness. Large methodological variations were observed across studies. All studies except one were of moderate quality. Conclusions: On addition of TiO 2NP to heat polymerized PMMA, the antimicrobial property and surface hardness improved irrespective of the size of the TiO 2NP, however, addition of nanoparticles less than 50 nm increased the surface roughness. Increasing the percentage of TiO 2NP increased the surface hardness but did not always increase the antimicrobial property. Addition of 3% TiO 2NP provided optimum results with regards to antimicrobial effect and surface hardness, but increase in the surface roughness.
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Affiliation(s)
- Pragati Kaurani
- Department of Prosthodontics, Mahatma Gandhi Dental College and Hospital, Jaipur, Rajasthan, 302022, India
| | - Amit D Hindocha
- Department of Prosthodontics, Sinhgad Dental College and Hospital, Pune, Maharashtra, 411041, India
| | - Rasika Manori Jayasinghe
- Department of Prosthetic Dentistry, Faculty of Dental Sciences , University of Peradeniya, Kandy, Central province, 20400, Sri Lanka
| | - Umesh Y Pai
- Department of Prosthodontics, Manipal College of Dental Sciences, Mangalore, Karnataka, 575004, India
| | - Kavita Batra
- Department of Medical Education, Kirk Kerkorian School of Medicine at University of Nevada, Las Vegas, Nevada, 89102, USA
| | - Carrie Price
- Health Professions Librarian, Albert S. Cook Library, Towson University, Towson, Maryland, 21252, USA
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Yang B, Ginsburg S, Li W, Vilela MM, Shahmohammadi M, Takoudis CG, Wu CD. Effect of nano-ceramic coating on surface property and microbial adhesion to poly(methyl methacrylate). J Biomed Mater Res B Appl Biomater 2023. [PMID: 36920405 DOI: 10.1002/jbm.b.35247] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 02/20/2023] [Accepted: 02/23/2023] [Indexed: 03/16/2023]
Abstract
To improve surface properties of poly(methyl methacrylate) (PMMA) using nano-ceramic coatings and assess microbial adherence after long-term use of a chemical cleanser. Thirty-six PMMA samples were fabricated, polished and coated with a nano-thin TiO2 or mixed TiO2 /ZrO2 , with uncoated samples as controls. Six samples in each group (n = 12) were soaked in Polident denture cleaner 180 times for 30 min, while six were soaked in deionized water. Surface roughness of PMMA before and after being soaked in Polident was assessed. All samples were subsequently exposed to Candida albicans for 6 h and the adherent cells were determined by viable colony count. Two-way analysis of variance was performed for statistical analysis. No significant difference in surface roughness was noted between the uncoated and coated PMMA before soaking. After soaking, surface roughness of the uncoated PMMA increased from 0.164 to 0.532 μm (p < .05). No significant change was observed for TiO2 -coated (0.105-0.143 μm) or TiO2 /ZrO2 -coated PMMA (0.104-0.141 μm). Attachment of C. albicans to PMMA soaked in water showed significantly less attachment to both TiO2 -coated (1.4 × 103 cfu/ml) and TiO2 /ZrO2 -coated PMMA (1.6 × 103 cfu/ml) than to the uncoated PMMA (2.6 × 103 cfu/ml). After soaking in Polident, the uncoated PMMA had significantly less C. albicans attachment than coated samples. Less attachment was noted on the TiO2 /ZrO2 -coated PMMA then the TiO2 -coated samples (p < .05). Nano-ceramic TiO22 /ZrO2 coating of PMMA denture base material alters surface properties thus reduces oral microbial adhesion. It represents a promising alternative to the chemical disinfection for PMMA denture materials.
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Affiliation(s)
- Bin Yang
- Department of Restorative Dentistry, College of Dentistry, University of Illinois Chicago, Chicago, Illinois, USA
| | - Shari Ginsburg
- Department of Restorative Dentistry, College of Dentistry, University of Illinois Chicago, Chicago, Illinois, USA
| | - Wei Li
- Department of Pediatric Dentistry, College of Dentistry, University of Illinois Chicago, Chicago, Illinois, USA
| | - Marina Moscardini Vilela
- Department of Pediatric Dentistry, College of Dentistry, University of Illinois Chicago, Chicago, Illinois, USA
| | - Mina Shahmohammadi
- Department of Chemical Engineering, College of Engineering, University of Illinois Chicago, Chicago, Illinois, USA
| | - Christos G Takoudis
- Department of Chemical Engineering, College of Engineering, University of Illinois Chicago, Chicago, Illinois, USA.,Department of Biomedical Engineering, College of Engineering, University of Illinois Chicago, Chicago, Illinois, USA
| | - Christine D Wu
- Department of Pediatric Dentistry, College of Dentistry, University of Illinois Chicago, Chicago, Illinois, USA
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Study of some mechanical and physical properties of PMMA reinforced with (TiO2 and TiO2-GO) nanocomposite for denture bases. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03284-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Kim YJ, Choe YE, Shin SJ, Park JH, Dashnyam K, Kim HS, Jun SK, Knowles JC, Kim HW, Lee JH, Lee HH. Photocatalytic effect-assisted antimicrobial activities of acrylic resin incorporating zinc oxide nanoflakes. BIOMATERIALS ADVANCES 2022; 139:213025. [PMID: 35882118 DOI: 10.1016/j.bioadv.2022.213025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/13/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
To overcome the deficiency of the antimicrobial effect of polymer, zinc oxide nanoparticles have been widely utilized as advanced nanofillers due to their antimicrobial and photocatalytic activity. However, the underlying antimicrobial mechanism has not been fully understood apart from topological and physical characteristics. In this study, we prepared zinc oxide nanoparticles-based acrylic resin to explore its antimicrobial mechanism under controlled mechanophysical conditions by using silane-treated zinc oxide nanoflakes (S-ZnNFs). S-ZnNFs incorporated acrylic resin (poly(methyl methacrylate), PMMA) composites up to 2 wt% were selected based on comparable mechanophysical properties (e.g., roughness, wettability, strength and hardness), possibly affecting antimicrobial properties beyond the zinc oxide nanoparticle effect, to bare PMMA. Antimicrobial adhesion results were still observed in 2 wt% S-ZnNFs incorporated PMMA using Candida albicans (C. albicans), one of the fungal infection species. In order to confirm the antimicrobial effects by photocatalysis, we pre-exposed the UV light on 2 wt% S-ZnNF composites before cell seeding, revealing synergetic antimicrobial effect via additional reactive oxygen species (ROS) generation to C. albicans over zinc oxide nanoparticle-induced one. RNA-seq analysis revealed distinguished cellular responses between zinc oxide nanoparticles and UV-mediated photocatalytic effect, but both linked to generation of intracellular ROS. Thus, the above data suggest that induction of high intracellular ROS of C. albicans was the main antimicrobial mechanism under controlled mechanophysical parameters and synergetic ROS accumulation can be induced by photocatalysis, recapitulating a promising use of a S-ZnNFs or possibly zinc oxide nanoparticles as intracellular-ROS-generating antimicrobial nanofillers in acrylic composite for biomedical applications.
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Affiliation(s)
- Yu-Jin Kim
- Department of Biomaterials Science, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea
| | - Young-Eun Choe
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea
| | - Seong-Jin Shin
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea
| | - Jeong-Hui Park
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea
| | - Khandmaa Dashnyam
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Drug Research Institute, Mongolian Pharmaceutical University & Monos Group, Ulaanbaatar 14250, Mongolia
| | - Hye Sung Kim
- Department of Biomaterials Science, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Mechanobiology Dental Medicine Research Center, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Cell & Matter Institute, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea
| | - Soo-Kyung Jun
- Department of Biomaterials Science, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Department of Hygiene, Hanseo University, 46 Hanseo 1-ro, Seosan, Chungcheongnam-do, 31962, Republic of Korea
| | - Jonathan C Knowles
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Cell & Matter Institute, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, Royal Free Hospital, Rowland Hill Street, London NW3 2PF, UK; The Discoveries Centre for Regenerative and Precision Medicine, Eastman Dental Institute, University College London, London, UK
| | - Hae-Won Kim
- Department of Biomaterials Science, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Mechanobiology Dental Medicine Research Center, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Cell & Matter Institute, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea
| | - Jung-Hwan Lee
- Department of Biomaterials Science, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Mechanobiology Dental Medicine Research Center, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Cell & Matter Institute, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea.
| | - Hae-Hyoung Lee
- Department of Biomaterials Science, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea; UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, 119 Dandae-ro, Cheonan, Chungcheongnam-do, 31116, Republic of Korea.
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Dental Poly(methyl methacrylate)-Based Resin Containing a Nanoporous Silica Filler. J Funct Biomater 2022; 13:jfb13010032. [PMID: 35323232 PMCID: PMC8948615 DOI: 10.3390/jfb13010032] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/11/2022] [Accepted: 03/11/2022] [Indexed: 02/04/2023] Open
Abstract
Poly(methyl methacrylate) (PMMA)-based resins have been conventionally used in dental prostheses owing to their good biocompatibility. However, PMMA-based resins have relatively poor mechanical properties. In the present study, a novel nanoporous silica filler was developed and introduced into PMMA-based resins to improve their mechanical properties. The filler was prepared by sintering a green body composed of silica and an organic binder, followed by grinding to a fine powder and subsequent silanization. The filler was added to photocurable PMMA-based resin, which was prepared from MMA, PMMA, ethylene glycol dimethacrylate, and a photo-initiator. The filler was characterized by scanning electron microscopy (SEM), X-ray diffraction analysis, nitrogen sorption porosimetry, and Fourier transform infrared (FT-IR) spectroscopy. The PMMA-based resins were characterized by SEM and FT-IR, and the mechanical properties (Vickers hardness, flexural modulus, and flexural strength) and physicochemical properties (water sorption and solubility) were evaluated. The results suggested that the filler consisted of microparticles with nanopores. The filler at 23 wt % was well dispersed in the PMMA-based resin matrix. The mechanical and physicochemical properties of the PMMA-based resin improved significantly with the addition of the developed filler. Therefore, such filler-loaded PMMA-based resins are potential candidates for improving the strength and durability of polymer-based crown and denture base.
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Surface engineering of poly(methyl methacrylate)–reduced graphene oxide composite films by Au7+ ion irradiation for biomedical application. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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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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11
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Flexural Strength and Hardness of Filler-Reinforced PMMA Targeted for Denture Base Application. MATERIALS 2021; 14:ma14102659. [PMID: 34069482 PMCID: PMC8159135 DOI: 10.3390/ma14102659] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/11/2021] [Accepted: 05/14/2021] [Indexed: 11/26/2022]
Abstract
The aim of this work was to evaluate the flexural strength and surface hardness of heat-cured Polymethyl methacrylate (PMMA) modified by the addition of ZrO2 nanoparticles, TiO2 nanoparticles, and E-glass fibre at different wt.% concentrations. Specimens were fabricated and separated into four groups (n = 10) to measure both flexural strength and surface hardness. Group C was the control group. The specimens in the remaining three groups differed according to the ratio of filler to weight of PMMA resin (1.5%, 3%, 5%, and 7%). A three-point bending test was performed to determine the flexural strength, while the surface hardness was measured using the Vickers hardness. Scanning Electron Microscope (SEM) was employed to observe the fractured surface of the specimens. The flexural strength was significantly improved in the groups filled with 3 wt.% ZrO2 and 5 and 7 wt.% E-glass fibre in comparison to Group C. All the groups displayed a significantly higher surface hardness than Group C, with the exception of the 1.5% TiO2 and 1.5% ZrO2 groups. The optimal filler concentrations to enhance the flexural strength of PMMA resin were between 3–5% ZrO2, 1.5% TiO2, and 3–7% E-glass fibre. Furthermore, for all composites, a filler concentration of 3 wt.% and above would significantly improve hardness.
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12
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Ozdemir AK, Ozdemir Dogan D, Tugut F, Demir H, Akin H. Effects of boron on the mechanical properties of polymethylmethacrylate denture base material. Eur Oral Res 2021; 55:45-53. [PMID: 33937762 PMCID: PMC8055257 DOI: 10.26650/eor.20210132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Purpose: The objective of this study was to determine whether the addition of different types
of boron (Borax, Boric Acid and Colemanite) to polymethyl methacrylate denture
base resin would improve flexural and impact strengths, and surface hardness of
polymethyl methacrylate. Materials and methods: Borax, Boric acid, Colemanite were added to heat polymerized polymethyl
methacrylate specimens were prepared for flexural strength (65x10x2.5 mm),
impact strength (50x6x4 mm), and hardness (20x6x4 mm) tests according to the
manufacturers’ instructions (n=10). To determine flexural strength of the specimens,
they were loaded until failure on a universal testing machine using a three point
bending test. Specimens were subjected to the Charpy impact test machine.
Hardness of the specimens was measured with an analog shoremeter Shore D. The
data were analyzed with Kruskal-Wallis and Mann-Whitney U tests (α=0.05). Results: The highest mean flexural strength value was seen in 3% Borax group and followed
by 1% Colemanite group. In addition, the highest mean impact strength value was
recorded in 1% Colemanite group, and differences between 1% Colemanite group
and control group were found to be statistically significant (p=0,001). Furthermore,
there was significant difference in hardness between control group and all other
groups (p<0.001). Conclusion: The addition of 1% Colemanite to polymethyl methacrylate improved the
mechanical properties of PMMA.
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Affiliation(s)
- Ali Kemal Ozdemir
- Department of Prosthodontics, Faculty of Dentistry,Trakya University, Edirne,Turkey
| | - Derya Ozdemir Dogan
- Department of Prosthodontics, Faculty of Dentistry,Cumhuriyet University, Sivas,Turkey
| | - Faik Tugut
- Department of Prosthodontics, Faculty of Dentistry,Cumhuriyet University, Sivas,Turkey
| | - Hakan Demir
- Department of Prosthodontics, Faculty of Dentistry,Cumhuriyet University, Sivas,Turkey
| | - Hakan Akin
- Department of Prosthodontics, Faculty of Dentistry,Sakarya University, Sakarya,Turkey
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13
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Effect of chitosan nanoparticles on the inhibition of Candida spp. biofilm on denture base surface. Arch Oral Biol 2018; 94:99-107. [PMID: 30015218 DOI: 10.1016/j.archoralbio.2018.07.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 07/03/2018] [Accepted: 07/07/2018] [Indexed: 12/30/2022]
Abstract
OBJECTIVES Chitosan nanoparticles (ChNPs) have antifungal effects, however there is a lack of information about the effects of ChNPs against Candida biofilm on denture base surface. This study investigated the ChNPs effect against C. albicans biofilm adhesion and formation, and against Candida spp. biofilm on heat-cured acrylic resin. DESIGN The ChNPs were synthetized (3800 μg/mL) and characterized by infra-red spectrophotometry and transmission electron microscopy. The minimum inhibitory/fungicidal concentrations (MIC/MFC) against Candida spp. were determined. The time-kill assay and changes on C. albicans micromorphology were evaluated. The % inhibition of ChNPs on C. albicans biofilm formation and reduction were investigated using 1 min and 8 h exposure. Candida biofilm was developed on resin surfaces and ChNPs were applied every 8 h for 5 days. After, fungal cells were counted (CFU/mL) and the surface roughness (Ra) and vickers microhardness (HV) of resin were analysed. For all experiments, sodium hypochlorite (NaOCl) was used as control. Data were analyzed by ANOVA, Tukey and paired t-tests (α = 0.05). RESULTS The MIC80% of ChNPs was 30.1 μg/mL. ChNPs at 4 MIC showed complete inhibition in the time-kill assays. Blastoconidia cells were predominant after ChNPs application. The % inhibition ChNPs on C. albicans was proportional to its concentration, regardless of the exposure time. ChNPs decreased the CFU/mL of Candida spp. and showed lower alteration of HV and Ra values of resin surface compared to NaOCl. CONCLUSIONS The ChNPs inhibited C. albicans biofilm, reduced Candida biofilm on resin and caused small changes in roughness and hardness of acrylic resin surface.
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14
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Saji GS, Shamnadh M, Varma S, Amanulla S, Bharath R, Oommen C. Experimental Evaluation of Compressive Strength of PMMA-Seashell based Biocomposites for Orthopedic Applications. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.matpr.2018.06.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Takahashi T, Gonda T, Mizuno Y, Fujinami Y, Maeda Y. Reinforcement in removable prosthodontics: a literature review. J Oral Rehabil 2017; 44:133-143. [PMID: 27893169 DOI: 10.1111/joor.12464] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/23/2016] [Indexed: 11/30/2022]
Abstract
Removable prosthodontics are often associated with mechanical troubles in daily use, such as fracture or deformation. These troubles render prostheses unusable and reduce wearers' QOL. Various reinforcements are used to prevent such problems, but consensus on reinforcement has not been reached. This review aimed to summarise the effects of reinforcement and to propose favourable reinforcement based on material, design and position in the prostheses. Initially, 139 articles were selected by electronic and manual searches. After exclusion of 99 articles based on the exclusion criteria, 40 articles were finally included in the review. Electronic searches were performed for articles published from 2005 to 2015 in PubMed, EMBASE, MEDLINE and Cochrane Library, and manual searches were performed in 10 journals relevant to the topic of removable prosthodontics. For in vitro studies, certain dental alloys and fibres were mainly used. Their forms were different, including complicated forms in dental alloys and various forms in fibres. The materials were examined for mechanical properties like fracture strength, flexural strength and elastic modulus and compared with one another or without reinforcement. There were a few clinical studies and one longitudinal study. Cast metal reinforcement seemed to be most favourable in terms of fracture toughness and stiffness. The most favourable forms differed depending on the prostheses, but placement around thin and deformable areas was effective. However, randomised or longitudinal clinical reports and comparative clinical studies on the use of reinforcement were still lacking and such studies are necessary in the future.
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Affiliation(s)
- T Takahashi
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Osaka University Graduate School of Dentistry, Suita, Japan
| | - T Gonda
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Y Mizuno
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Y Fujinami
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Y Maeda
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Osaka University Graduate School of Dentistry, Suita, Japan
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16
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Elshereksi NW, Ghazali M, Muchtar A, Azhari CH. Review of titanate coupling agents and their application for dental composite fabrication. Dent Mater J 2017; 36:539-552. [PMID: 28652551 DOI: 10.4012/dmj.2016-014] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Silane is a dominant coupler that is widely used in dentistry to promote adhesion among the components of dental composites. Silica-based fillers can be easily silanized because of their similarly ordered structure. However, silane is hydrolytically degraded in the aqueous oral environment and inefficiently bonds to non-silica fillers. Thus, the development of hydrolytically stable dental composites is an important objective in the research on dental materials. Titanate coupling agents (TCAs) exhibit satisfactory interfacial bonding, enhanced homogeneous filler dispersion, and improved mechanical properties of the composites. Titanates also provide superior hydrolytic stability in wet environments, which should be considered in fabricating dental composites. The addition of a small amount of titanates can improve the resistance of the composites to moisture. This paper reviews the effects of the instability of silanes in moisture on the performance of dental composites and presents TCAs as alternative couplers to silanes for fabricating dental composites.
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Affiliation(s)
- Nidal Wanis Elshereksi
- Department of Mechanical & Materials Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia.,Department of Dental Technology, College of Medical Technology
| | - Mariyam Ghazali
- Department of Mechanical & Materials Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia
| | - Andanastuti Muchtar
- Department of Mechanical & Materials Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia
| | - Che Husna Azhari
- Department of Mechanical & Materials Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia
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17
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Chen R, Han Z, Huang Z, Karki J, Wang C, Zhu B, Zhang X. Antibacterial activity, cytotoxicity and mechanical behavior of nano-enhanced denture base resin with different kinds of inorganic antibacterial agents. Dent Mater J 2017; 36:693-699. [PMID: 28701638 DOI: 10.4012/dmj.2016-301] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Silanized aluminum borate whiskers (ABWs) of 4 wt%, silanized zirconium dioxide nanoparticles (nano-ZrO2) of 2 wt% were mixed with polymethyl methacrylate (PMMA) powder to get ZrO2-ABWs/PMMA composites. Titanium dioxide (TiO2), silver-supported titanium dioxide (Ag/TiO2), silver-supported zirconium phosphate (Novaron) and tetrapod-like zinc oxide whiskers (T-ZnOw) antibacterial agents of 3 wt% were mixed with ZrO2-ABWs/PMMA composites respectively to fabricate standard specimens. Plaque biofilms on the specimens surface were investigated for colony-forming units (CFUs). In addition, cytotoxicity and mechanical behavior were evaluated. Results showed that the CFUs values of S. mutans and C. albican biofilms on the four antibacterial composites surface were all reduced (p<0.05) compared to the blank and control groups. The antibacterial composites did not have an adverse effect on fibroblast growth in this study (p>0.05) except TiO2 and Ag/TiO2 groups of undiluted extracts. The flexural strength and surface hardness of Novaron and T-ZnOw groups were increased (p<0.05) compared to the control group.
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Affiliation(s)
- Rongrong Chen
- Department of Prosthodontics, 9th People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology
| | - Zhihui Han
- Department of Prosthodontics, 9th People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology
| | - Zhuoli Huang
- Department of Prosthodontics, 9th People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology
| | - Junu Karki
- Department of Prosthodontics, 9th People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology
| | - Chenxin Wang
- Department of Prosthodontics, 9th People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology
| | - Bangshang Zhu
- Instrumental Analysis Center, Shanghai Jiao Tong University
| | - Xiuyin Zhang
- Department of Prosthodontics, 9th People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology
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18
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Gad MM, Fouda SM, Al-Harbi FA, Näpänkangas R, Raustia A. PMMA denture base material enhancement: a review of fiber, filler, and nanofiller addition. Int J Nanomedicine 2017; 12:3801-3812. [PMID: 28553115 PMCID: PMC5440038 DOI: 10.2147/ijn.s130722] [Citation(s) in RCA: 161] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
This paper reviews acrylic denture base resin enhancement during the past few decades. Specific attention is given to the effect of fiber, filler, and nanofiller addition on poly(methyl methacrylate) (PMMA) properties. The review is based on scientific reviews, papers, and abstracts, as well as studies concerning the effect of additives, fibers, fillers, and reinforcement materials on PMMA, published between 1974 and 2016. Many studies have reported improvement of PMMA denture base material with the addition of fillers, fibers, nanofiller, and hybrid reinforcement. However, most of the studies were limited to in vitro investigations without bioactivity and clinical implications. Considering the findings of the review, there is no ideal denture base material, but the properties of PMMA could be improved with some modifications, especially with silanized nanoparticle addition and a hybrid reinforcement system.
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Affiliation(s)
- Mohammed M Gad
- Department of Substitutive Dental Sciences, College of Dentistry, University of Dammam, Dammam, Kingdom of Saudi Arabia
| | - Shaimaa M Fouda
- Department of Substitutive Dental Sciences, College of Dentistry, University of Dammam, Dammam, Kingdom of Saudi Arabia.,Research Unit of Oral Health Sciences, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Fahad A Al-Harbi
- Department of Substitutive Dental Sciences, College of Dentistry, University of Dammam, Dammam, Kingdom of Saudi Arabia
| | - Ritva Näpänkangas
- Research Unit of Oral Health Sciences, Faculty of Medicine, University of Oulu, Oulu, Finland.,Medical Research Center, Oulu, 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, Oulu University Hospital and University of Oulu, Oulu, Finland
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19
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Kamonkhantikul K, Arksornnukit M, Takahashi H. Antifungal, optical, and mechanical properties of polymethylmethacrylate material incorporated with silanized zinc oxide nanoparticles. Int J Nanomedicine 2017; 12:2353-2360. [PMID: 28392692 PMCID: PMC5376186 DOI: 10.2147/ijn.s132116] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Fungal infected denture, which is typically composed of polymethylmethacrylate (PMMA), is a common problem for a denture wearer, especially an elderly patient with limited manual dexterity. Therefore, increasing the antifungal effect of denture by incorporating surface modification nanoparticles into the PMMA, while retaining its mechanical properties, is of interest. Aim of the study This study aimed to evaluate antifungal, optical, and mechanical properties of heat-cured PMMA incorporated with different amounts of zinc oxide nanoparticles (ZnOnps) with or without methacryloxypropyltrimethoxysilane modification. Materials and methods Specimens made from heat-cured PMMA containing 1.25, 2.5, and 5% (w/w) nonsilanized (Nosi) or silanized (Si) ZnOnps were evaluated. Specimens without filler served as control. The fungal assay was performed placing a Candida albicans suspension on the PMMA surface for 2 h, then Sabouraud Dextrose Broth was added, and growth after 24 h was determined by counting colony forming units on agar plates. A spectrophotometer was used to measure the color in L* (brightness), a* (red-green), b* (yellow-blue) and opacity of the experimental groups. Flexural strength and flexural modulus were determined using a three-point bending test on universal testing machine after 37°C water storage for 48 h and 1 month. Results The antifungal, optical, and mechanical properties of the PMMA incorporated with ZnOnps changed depending on the amount. With the same amount of ZnOnps, the silanized groups demonstrated a greater reduction in C. albicans compared with the Nosi groups. The color difference (ΔE) and opacity of the Nosi groups were greater compared with the Si groups. The flexural strength of the Si groups, except for the 1.25% group, was significantly greater compared with the Nosi groups. Conclusion PMMA incorporated with Si ZnOnps, particularly with 2.5% Si ZnOnps, had a greater antifungal effect, less color differences, and opacity compared with Nosi ZnOnps, while retaining its mechanical properties.
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Affiliation(s)
- Krid Kamonkhantikul
- Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Mansuang Arksornnukit
- Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Hidekazu Takahashi
- Oral Biomaterials Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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20
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Gungor H, Gundogdu M, Alkurt M, Yesil Duymus Z. Effect of polymerization cycles on flexural strengths and microhardness of different denture base materials. Dent Mater J 2017; 36:168-173. [PMID: 28090030 DOI: 10.4012/dmj.2016-023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The purpose of this study was to evaluate the effect of different polymerization cycles on the flexural strengths and microhardness of two denture base materials (Meliodent and Paladent). Heat-polymerized acrylic resin specimens (65.0 mm long×10.0 mm wide×2.5 mm in height) were prepared using different short and long polymerization cycles. After the specimens had been polymerized, they were stored in distilled water at 37±1°C for 24 h. Flexural strength test was performed at a cross-head speed of 5 mm/min and Vickers microhardness was measured. Data were analyzed with a 1-way analysis of variance followed by Tukey test, and Student t-test (α=0.05). The flexural strengths and microhardness were significantly different between Meliodent and Paladent (p<0.05). Significant differences were found among the polymerization cycles in terms of flexural strengths and microhardness (p<0.05). Polymerization with G cycle may be suggested for Meliodent and H cycle may be suggested for Paladent.
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Affiliation(s)
- Hasan Gungor
- Department of Prosthodontics, Faculty of Dentistry, Atatürk University
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21
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Antimicrobial hybrid biocompatible materials based on acrylic copolymers modified with (Ag)ZnO/chitosan composite nanoparticles. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.09.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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22
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Synthesis and characterization of POSS-(PAA)8 star copolymers and GICs for dental applications. Dent Mater 2016; 32:e82-92. [DOI: 10.1016/j.dental.2016.01.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 01/26/2016] [Indexed: 11/20/2022]
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23
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Zhang XY, Zhang XJ, Huang ZL, Zhu BS, Chen RR. Hybrid effects of zirconia nanoparticles with aluminum borate whiskers on mechanical properties of denture base resin PMMA. Dent Mater J 2015; 33:141-6. [PMID: 24492125 DOI: 10.4012/dmj.2013-054] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this study was to investigate the hybrid effects of ZrO₂ nanoparticles (nano-ZrO₂) and aluminum borate whiskers (ABWs) on flexural strength and surface hardness of denture base resin, polymethyl methacrylate (PMMA). Both nano-ZrO₂ and ABWs were modified by silane coupling agent (Z6030) before being mixed with PMMA. Various amounts of silanized nano-ZrO₂ and ABWs were mixed with PMMA to prepare ZrO₂-ABW/PMMA composites. Flexural strength and surface hardness were evaluated using three- point bending test and Vickers hardness test respectively. Fractured surfaces were also observed by scanning electron microscopy (SEM). The mechanical behaviors of silanized ZrO₂-ABW/PMMA composites were significantly improved. Flexural strength reached a maximum value of 108.01 ± 5.54 MPa when 2 wt% of nano-ZrO₂ was mixed with ABWs at a ZrO₂/ABW ratio of 1:2, amounting to an increase of 52% when compared with pure PMMA. Surface hardness achieved a maximum value of 22.50 ± 0.86 MPa when 3 wt% of nano-ZrO₂ was mixed with ABWs at the same ZrO₂/ABW ratio, which was an increase of 27% when compared with pure PMMA.
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Affiliation(s)
- Xiu-Yin Zhang
- Department of Prosthodontics, 9th People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology
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24
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Gül EB, Atala MH, Eşer B, Polat NT, Asiltürk M, Gültek A. Effects of coating with different ceromers on the impact strength, transverse strength and elastic modulus of polymethyl methacrylate. Dent Mater J 2015; 34:379-87. [PMID: 25904101 DOI: 10.4012/dmj.2014-203] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this study was to evaluate the mechanical properties of polymethyl methacrylate (PMMA) after coating with different ceromers. For transverse strength and modulus of elasticity tests, specimens of 65×10×2.5 mm dimensions were prepared (5 groups, n=10). For impact strength test, specimens of 60×7.5×4 mm dimensions were prepared (5 groups, n=10). Test group specimens were coated with one of four different types of ceromers, and specimens in the control group were not coated. After specimens were tested for transverse and impact strengths, the data were analyzed with Kruskal-Wallis and Conover post hoc tests (p<0.05). GLYMOTEOS-TiO2 and A174-TEOS significantly increased the transverse strength of PMMA. All ceromers caused a statistically significant increase in the elastic modulus of PMMA. While GLYMO-TEOS-ZrO2 significantly decreased the impact strength, the other ceromers did not cause any statistically significant difference in impact strength. Coating with ceromers substantially improved the mechanical properties of PMMA.
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Affiliation(s)
- Esma Başak Gül
- Department of Prosthodontics, Faculty of Dentistry, İnönü University
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25
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Wang Y, Liu M, Sun Y, Shang Y, Jiang B, Zhang H, Jiang Z. Aluminium borate whiskers grafted with boric acid containing poly(ether ether ketone) as a reinforcing agent for the preparation of poly(ether ether ketone) composites. RSC Adv 2015. [DOI: 10.1039/c5ra19635c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new soluble boron-containing poly(ether ether ketone) (B-PEEK) was synthesized through iridium-catalyzed C–H borylation and grafted on the surface of aluminum borate whiskers as the coupling agent between the whiskers and PEEK matrix.
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Affiliation(s)
- Yongpeng Wang
- College of Chemistry
- Engineering Research Center of High Performance Plastics
- Ministry of Education
- Jilin University
- Changchun 130012
| | - Mengzhu Liu
- College of Chemistry
- Engineering Research Center of High Performance Plastics
- Ministry of Education
- Jilin University
- Changchun 130012
| | - Yang Sun
- College of Chemistry
- Engineering Research Center of High Performance Plastics
- Ministry of Education
- Jilin University
- Changchun 130012
| | - Yingshuang Shang
- College of Chemistry
- Engineering Research Center of High Performance Plastics
- Ministry of Education
- Jilin University
- Changchun 130012
| | - Bo Jiang
- College of Chemistry
- Engineering Research Center of High Performance Plastics
- Ministry of Education
- Jilin University
- Changchun 130012
| | - Haibo Zhang
- College of Chemistry
- Engineering Research Center of High Performance Plastics
- Ministry of Education
- Jilin University
- Changchun 130012
| | - Zhenhua Jiang
- College of Chemistry
- Engineering Research Center of High Performance Plastics
- Ministry of Education
- Jilin University
- Changchun 130012
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26
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GUNDOGDU M, YANIKOGLU N, BAYINDIR F, CIFTCI H. Effect of repair resin type and surface treatment on the repair strength of polyamide denture base resin. Dent Mater J 2015; 34:485-9. [DOI: 10.4012/dmj.2014-362] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Mustafa GUNDOGDU
- Department of Prosthodontics, Faculty of Dentistry, Atatürk University
| | - Nuran YANIKOGLU
- Department of Prosthodontics, Faculty of Dentistry, Atatürk University
| | - Funda BAYINDIR
- Department of Prosthodontics, Faculty of Dentistry, Atatürk University
| | - Hilal CIFTCI
- Department of Prosthodontics, Faculty of Dentistry, Atatürk University
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27
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MATSUO H, SUENAGA H, TAKAHASHI M, SUZUKI O, SASAKI K, TAKAHASHI N. Deterioration of polymethyl methacrylate dentures in the oral cavity. Dent Mater J 2015; 34:234-9. [DOI: 10.4012/dmj.2014-089] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Hiroshi MATSUO
- Division of Oral Ecology and Biochemistry, Tohoku University Graduate School of Dentistry
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry
| | - Hanako SUENAGA
- Division of Preventive Dentistry, Tohoku University Graduate School of Dentistry
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry
| | - Masatoshi TAKAHASHI
- Division of Dental Biomaterials, Tohoku University Graduate School of Dentistry
| | - Osamu SUZUKI
- Division of Craniofacial Function Development, Tohoku University Graduate School of Dentistry
| | - Keiichi SASAKI
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry
| | - Nobuhiro TAKAHASHI
- Division of Oral Ecology and Biochemistry, Tohoku University Graduate School of Dentistry
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Effect of silver-supported materials on the mechanical and antibacterial properties of reinforced acrylic resin composites. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.matdes.2014.10.023] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Hamilton MF, Otte AD, Gregory RL, Pinal R, Ferreira-Zandoná A, Bottino MC. Physicomechanical and antibacterial properties of experimental resin-based dental sealants modified with nylon-6 and chitosan nanofibers. J Biomed Mater Res B Appl Biomater 2014; 103:1560-8. [PMID: 25532852 DOI: 10.1002/jbm.b.33342] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 10/07/2014] [Accepted: 12/02/2014] [Indexed: 11/07/2022]
Abstract
This study aimed to develop and evaluate resin-based experimental dental sealants containing electrospun nylon-6 (N6) and chitosan (CH) fibers in an attempt to improve the physicomechanical properties and provide an antibacterial protective effect, respectively. Electrospun N6 and CH mats were immersed into a resin mixture, light-cured, and then cryomilled to obtain micron-sized resin-modified fiber particles. Different levels of the novel cryomilled particles (i.e. 1, 2.5, and 5% relative to the resin mixture, % by weight) were used to prepare the N6- and CH-containing sealants. A commercial sealant and the experimental resin mixture (unfilled) were used as controls. Flexural strength (FS), Vickers microhardness (VH), and agar diffusion tests were performed. The data were analyzed at the 5% significance level. No significant difference in fiber diameter of N6 (503 ± 31 nm) and CH (595 ± 38 nm) was observed. Upon cryomilling, the resin-modified CH and N6 mats led to the formation of irregularly-shaped particles, with an average diameter of 14.24 µm and 15.87 µm, respectively. CH-5% had significantly higher FS (115.3 ± 1.3 MPa) than all the other groups. CH-1% had significantly higher hardness values (38.3 ± 0.3 VHN) than all the other groups. Collectively, the results indicated that CH-containing sealants presented the highest FS and hardness; however, none of the CH-containing sealants displayed antimicrobial properties.
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Affiliation(s)
- María F Hamilton
- Department of Restorative Dentistry, Graduate Operative and Preventive Dentistry, Indiana University School of Dentistry (IUSD), Indianapolis, Indiana.,Department of Restorative Dentistry, Dental Biomaterials Division, Indiana University School of Dentistry (IUSD), Indianapolis, Indiana
| | - Andrew D Otte
- Department of Industrial and Physical Pharmacy, Purdue University, College of Pharmacy, West Lafayette, Indiana
| | - Richard L Gregory
- Department of Oral Biology, Indiana University School of Dentistry (IUSD), Indianapolis, Indiana
| | - Rodolfo Pinal
- Department of Industrial and Physical Pharmacy, Purdue University, College of Pharmacy, West Lafayette, Indiana
| | - Andrea Ferreira-Zandoná
- Department of Operative Dentistry, University of North Carolina, Chapel Hill, North Carolina
| | - Marco C Bottino
- Department of Restorative Dentistry, Dental Biomaterials Division, Indiana University School of Dentistry (IUSD), Indianapolis, Indiana
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Gungor H, Gundogdu M, Yesil Duymus Z. Investigation of the effect of different polishing techniques on the surface roughness of denture base and repair materials. J Prosthet Dent 2014; 112:1271-7. [DOI: 10.1016/j.prosdent.2014.03.023] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 03/22/2014] [Accepted: 03/26/2014] [Indexed: 11/16/2022]
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31
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Lai WF, Oka K, Jung HS. Advanced functional polymers for regenerative and therapeutic dentistry. Oral Dis 2014; 21:550-7. [PMID: 25098817 DOI: 10.1111/odi.12281] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 06/23/2014] [Accepted: 08/01/2014] [Indexed: 01/16/2023]
Abstract
Use of ceramics and polymers continues to dominate clinical procedures in modern dentistry. Polymers have provided the basis for adhesives, tissue void fillers, and artificial replacements for whole teeth. They have been remarkably effective in the clinic at restoration of major dental functions after damage or loss of teeth. With the rapid development of polymer science, dental materials science has significantly lagged behind in harnessing these advanced polymer products. What they offer is new and unique properties superior to traditional polymers and crucially a range of properties that more closely match natural biomaterials. Therefore, we should pursue more vigorously the benefits of advanced polymers in dentistry. In this review, we highlight how the latest generation of advanced polymers will enhance the application of materials in the dental clinic using numerous promising examples. Polymers have a broad range of applications in modern dentistry. Some major applications are to construct frameworks that mimic the precise structure of tissues, to restore tooth organ function, and to deliver bioactive agents to influence cell behavior from the inside. The future of polymers in dentistry must include all these new enhancements to increase biological and clinical effectiveness beyond what can be achieved with traditional biomaterials.
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Affiliation(s)
- W-F Lai
- Division in Anatomy and Developmental Biology, Department of Oral Biology, BK21 PLUS Project, Oral Science Research Center, Yonsei University College of Dentistry, Seoul, Korea
| | - K Oka
- Section of Pediatric Dentistry, Department of Oral Growth and Development, Fukuoka Dental College, Fukuoka, Japan
| | - H-S Jung
- Division in Anatomy and Developmental Biology, Department of Oral Biology, BK21 PLUS Project, Oral Science Research Center, Yonsei University College of Dentistry, Seoul, Korea.,Oral Biosciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR
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Mechanical and Tribological Properties of PMMA-Sea Shell based Biocomposite for Dental application. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.mspro.2014.07.234] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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