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Fei X, Li Y, Zhang Q, Tian C, Li Y, Dong Q, Weir MD, Homayounfar N, Oates TW, Imazato S, Dai Q, Xu HHK, Ruan J. Novel pit and fissure sealant with nano-CaF 2 and antibacterial monomer: Fluoride recharge, microleakage, sealing ability and cytotoxicity. Dent Mater J 2024; 43:346-358. [PMID: 38583998 DOI: 10.4012/dmj.2023-166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Conventional resin-based sealants release minimal fluoride ions (F) and lack antibacterial activity. The objectives of this study were to: (1) develop a novel bioactive sealant containing calcium fluoride nanoparticles (nCaF2) and antibacterial dimethylaminohexadecyl methacrylate (DMAHDM), and (2) investigate mechanical performance, F recharge and re-release, microleakage, sealing ability and cytotoxicity. Helioseal F served as commercial control. The initial F release from sealant containing 20% nCaF2 was 25-fold that of Helioseal F. After ion exhaustion and recharge, the F re-release from bioactive sealant did not decrease with increasing number of recharge and re-release cycles. Elastic modulus of new bioactive sealant was 44% higher than Helioseal F. The new sealant had excellent sealing, minimal microleakage, and good cytocompatibility. Hence, the nanostructured sealant had substantial and sustained F release and antibacterial activity, good sealing ability and biocompatibility. The novel bioactive nCaF2 sealant is promising to provide long-term F ions for caries prevention.
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Affiliation(s)
- Xiuzhi Fei
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University
- Center of Oral Public Health, College of Stomatology, Xi'an Jiaotong University
| | - Yuncong Li
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University
- Department of Prosthodontics, College of Stomatology, Xi'an Jiaotong University
| | - Qian Zhang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University
- Center of Oral Public Health, College of Stomatology, Xi'an Jiaotong University
| | - Chunli Tian
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University
- Center of Oral Public Health, College of Stomatology, Xi'an Jiaotong University
| | - Yue Li
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University
- Center of Oral Public Health, College of Stomatology, Xi'an Jiaotong University
| | - Qiannan Dong
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University
- Center of Oral Public Health, College of Stomatology, Xi'an Jiaotong University
| | - Michael D Weir
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry
| | - Negar Homayounfar
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry
| | - Thomas W Oates
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry
| | - Satoshi Imazato
- Department of Dental Biomaterials, Osaka University Graduate School of Dentistry
| | - Quan Dai
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University
| | - Hockin H K Xu
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry
- Center for Stem Cell Biology and Regenerative Medicine, University of Maryland School of Medicine
- Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine
| | - Jianping Ruan
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University
- Center of Oral Public Health, College of Stomatology, Xi'an Jiaotong University
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Lee KH, Wang CY, Tsai YR, Huang SY, Huang WT, Kasimayan U, K P O M, Chiang YC. Epigallocatechin gallate-immobilized antimicrobial resin with rechargeable fluorinated synergistic composite for enhanced caries control. Dent Mater 2024; 40:407-419. [PMID: 38123384 DOI: 10.1016/j.dental.2023.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 12/10/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023]
Abstract
OBJECTIVES Given the global prevalence of dental caries, impacting 2.5 billion individuals, the development of sophisticated prevention filling materials is crucial. Streptococcus mutans, the principal caries-causing strain, produces acids that demineralize teeth and initiate dental caries. To address this issue, we aimed to develop a synergistic resin-based composite for enhancing caries control. METHODS The synergistic resin composite incorporates fluorinated kaolinite and silanized Al2O3 nanoparticle fillers into an epigallocatechin gallate (EGCG) immobilized urethane-modified epoxy acrylate (U-EA) resin matrix, referred to the as-prepared resin composite. The EGCG-modified TPGDA/U-EA network was synthesized by preparing methacrylate-functionalized isocyanate (HI), reacting it with EGCG to form HI-EGCG, and then incorporating HI-EGCG into the TPGDA/U-EA matrix. The lamellar space within the kaolinite layer was expanded through the intercalation of acrylamide into kaolinite, enhancing its capability to adsorb and release fluoride ions (F-). The layered structure of acrylamide/ kaolinite in the U-EA resin composite acts as a F- reservoir. RESULTS The physico-mechanical properties of the as-prepared resin composites are comparable to those of commercial products, exhibiting lower polymerization shrinkage, substantial F- release and recharge and favorable diametral tensile strength. The immobilized EGCG in the composite exhibits potent antimicrobial properties, effectively reducing the biofilm biomass. Furthermore, the synergistic effect of EGCG and fluorinated kaolinite efficiently counteracts acid-induced hydroxyapatite dissolution, thereby suppressing demineralization and promoting enamel remineralization. SIGNIFICANCE Our innovative EGCG and fluoride synergistic composite provides enhanced antimicrobial properties, durable anti-demineralization, and tooth remineralization effects, positioning it as a promising solution for effective caries control and long-term dental maintenance.
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Affiliation(s)
- Kuan-Han Lee
- Department of Dentistry, Shin Kong Wu Ho-Su Memorial Hospital, Taipei 111, Taiwan; Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, 1, Chang-de Street, Taipei 10016, Taiwan
| | - Chen-Ying Wang
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, 1, Chang-de Street, Taipei 10016, Taiwan; Division of Periodontology, Department of Dentistry, National Taiwan University Hospital, Taiwan
| | - Yun-Rong Tsai
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, 1, Chang-de Street, Taipei 10016, Taiwan; Division of Restorative and Esthetic Dentistry, Department of Dentistry, National Taiwan University Hospital, 1, Chang-de Street, Taipei 10016, Taiwan
| | - Szu-Ying Huang
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, 1, Chang-de Street, Taipei 10016, Taiwan; Division of Restorative and Esthetic Dentistry, Department of Dentistry, National Taiwan University Hospital, 1, Chang-de Street, Taipei 10016, Taiwan
| | - Wei-Te Huang
- School of Dentistry, National Defense Medical Center, Taipei 114, Taiwan
| | - Uma Kasimayan
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, 1, Chang-de Street, Taipei 10016, Taiwan
| | - Mahesh K P O
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, 1, Chang-de Street, Taipei 10016, Taiwan
| | - Yu-Chih Chiang
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, 1, Chang-de Street, Taipei 10016, Taiwan; Division of Restorative and Esthetic Dentistry, Department of Dentistry, National Taiwan University Hospital, 1, Chang-de Street, Taipei 10016, Taiwan; School of Dentistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Molecular Imaging Center, National Taiwan University, Taipei 10617, Taiwan.
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Effect of Zinc Oxide Incorporation on the Antibacterial, Physicochemical, and Mechanical Properties of Pit and Fissure Sealants. Polymers (Basel) 2023; 15:polym15030529. [PMID: 36771830 PMCID: PMC9919382 DOI: 10.3390/polym15030529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/12/2023] [Accepted: 01/16/2023] [Indexed: 01/22/2023] Open
Abstract
This study aimed to evaluate the antibacterial, physicochemical, and mechanical properties of pit and fissure sealants containing different weight percentages of zinc oxide nanoparticles (ZnO NPs). The following amounts of ZnO NPs were added to a commercially available pit and fissure sealant (BeautiSealant, Shofu, Japan) to prepare the experimental materials: 0 wt.% (commercial control (CC)), 0.5 wt.% (ZnO 0.5), 1 wt.% (ZnO 1.0), 2 wt.% (ZnO 2.0), and 4 wt.% (ZnO 4.0). The antibacterial effect against S. mutans was confirmed by counting the colony-forming units (CFUs) and observing live/dead bacteria. In addition, ion release, depth of cure, water sorption and solubility, and flexural strength tests were conducted. When compared with the CC, the experimental groups containing ZnO NPs showed zinc ion emission and significantly different CFUs (p < 0.05) with fewer live bacteria. ZnO NP addition reduced the depth of cure and water solubility and increased water sorption in comparison with the CC (p < 0.05). However, all groups showed similar flexural strength (p > 0.05). The pit and fissure sealants containing ZnO NPs exhibited antibacterial activity against S. mutans with no negative effects on physicochemical and mechanical properties, and thus, these sealants can be ideal secondary caries prevention material.
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Safwat EM, Alkabani YM, Zaki DY, Elbatanony MM, Abd-elsatar AG, Saleh RS, Khater GA. Preparation and characterization of dental pit and fissure sealant based on calcium sodium silicate bioactive glasses.. [DOI: 10.21203/rs.3.rs-2453592/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Abstract
This study aimed to prepare a resin based dental sealant loaded with novel bioactive glass formulated from (50 wt% calcium silicate and 50 wt% sodium silicate) with different percentages of fluorapatite. Four glass batches were formulated then characterized using Fourier Transform Infrared Spectroscopy analysis, X-ray powder diffraction analysis and Transmission electron microscopy. Density, microhardness and bioactivity testing after insertion in artificial saliva were done. Four Bisphenol-A glycerolate dimethacrylate based sealant loaded with the glass batch that showed the preeminent properties and silica fillers were prepared. The prepared sealants were compared to commercial sealants regarding flow, curing depth, compressive strength and microhardness. Sealant composition that showed comparable properties to that of the commercial sealant was selected for pH changes, ion release testing after immersion in artificial saliva for different time intervals. Results indicated the structural stability, amorphous nature, and bioactive behavior with apatite forming ability of the tested glass batches. Experimental sealant revealed comparable tested properties with lower compressive strength compared to the commercial sealants at P < 0.001. The mean pH values of the tested sealants ranged from 6.75 to 6.35 with extended calcium and phosphorus ion release up to 90 days. It was concluded that the 85 wt% calcium silicate and sodium silicate with 15 wt% fluoroapatite had the best trend regarding ion release and appetite forming ability. Sealant loaded with 65 wt% bioactive glass, 10 wt% sintered nanosilica and 10 wt% nanosilica had the best acceptable mechanical properties. The novel pit and fissure sealant is a promising bioactive and ion releasing material.
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Lai CC, Lin CP, Wang YL. Development of antibacterial composite resin containing chitosan/fluoride microparticles as pit and fissure sealant to prevent caries. J Oral Microbiol 2021; 14:2008615. [PMID: 34992735 PMCID: PMC8725701 DOI: 10.1080/20002297.2021.2008615] [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: 08/04/2021] [Revised: 11/15/2021] [Accepted: 11/17/2021] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Develop a fissure sealant containing chitosan/fluoride microparticles (C/F) with antibacterial, fluoride release and recharge ability. MATERIALS AND METHODS Chitosan/fluoride microparticles were synthesized and added to Bis-GMA as C/F. The experimental group comprised 0%, 2%, 4% C/F, with ClinproTM fissure sealant as control. Antibacterial activity was detected by Alamar Blue assay and colony-forming units (CFU). Biocompatibility was determined by WST-1 and LDH test. Curing depth, flowability, tensile strength and flexural strength were measured according to the ISO standard; microhardness by Vickers hardness test. Fluoride release and recharge were recorded through ionic chromatography. Statistical analysis was performed with an independent t-test, one-way and two-way ANOVA. P values less than 0.05 were considered significant. RESULTS 2% and 4% C/F showed antibacterial ability with CFU ratios decreasing to 10% and 25% respectively (P < 0.01). Nonetheless, 4% C/F was concerned because biocompatibility revealed cytotoxicity compared to medium (P < 0.001). 2% C/F had superior mechanical properties to ClinproTM fissure sealant in terms of curing depth (P < 0.001), microhardness and tensile strength (P < 0.01). It had good fluoride release and recharge ability (P = 0.67). CONCLUSIONS 2% C/F could be an antibacterial sealant with good mechanical strength, fluoride release and recharge ability.
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Affiliation(s)
- Chun-Cheng Lai
- Pediatric Dentistry, Far Eastern Memorial Hospital, Taipei, Taiwan
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Chun-Pin Lin
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
- College of Medicine, National Taiwan University Hospital, National Taiwan University, Taipei, Taiwan
| | - Yin-Lin Wang
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
- College of Medicine, National Taiwan University Hospital, National Taiwan University, Taipei, Taiwan
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Li KY, Tsai CC, Lin TC, Wang YL, Lin FH, Lin CP. Fluorinated Montmorillonite and 3YSZ as the Inorganic Fillers in Fluoride-Releasing and Rechargeable Dental Composition Resin. Polymers (Basel) 2020; 12:polym12010223. [PMID: 31963243 PMCID: PMC7023564 DOI: 10.3390/polym12010223] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 01/11/2020] [Accepted: 01/13/2020] [Indexed: 12/29/2022] Open
Abstract
Dental caries (tooth decay) is the most frequent oral disease in humans. Filling cavities with a dental restorative material is the most common treatment, and glass ionomer cements are the main fluoride ion release restorative materials. The goal of this study was to develop a restorative compound with superior fluoride ion release and recharge abilities. Previously developed fluorinated bentolite and hydrophobized 3YSZ were used as two different inorganic fillers mixed in a bisphenol A-glycidyl methacrylate (Bis-GMA) matrix. XRD, FTIR, and TGA were used to determine the hydrophobic modification of these two inorganic fillers. In mechanical tests, including diameter tensile strength, flexural strength, and wear resistance, the developed composite resin was significantly superior to the commercial control. A WST-1 assay was used to confirm that the material displayed good biocompatibility. Furthermore, the simulation of the oral environment confirmed that the composite resin had good fluoride ion release and reloading abilities. Thus, the composite resin developed in this study may reduce secondary caries and provide a new choice for future clinical treatments.
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Affiliation(s)
- Keng-Yuan Li
- Institute of Biomedical Engineering, National Taiwan University, No.49, Fanglan Rd., Da’an Dist., Taipei 10672, Taiwan; (K.-Y.L.); (T.-C.L.)
| | - Cheng-Chia Tsai
- Department of Neurosurgery, Mackay Memorial Hospital, No.92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei 10449, Taiwan;
| | - Tzu-Chieh Lin
- Institute of Biomedical Engineering, National Taiwan University, No.49, Fanglan Rd., Da’an Dist., Taipei 10672, Taiwan; (K.-Y.L.); (T.-C.L.)
| | - Yin-Lin Wang
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, No.1, Sec. 1, Ren’ai Rd., Zhongzheng Dist., Taipei 10051, Taiwan;
- National Taiwan University Hospital, College of Medicine, National Taiwan University, No.1, Changde St., Zhongzheng Dist., Taipei 10048, Taiwan
| | - Feng-Huei Lin
- Institute of Biomedical Engineering, National Taiwan University, No.49, Fanglan Rd., Da’an Dist., Taipei 10672, Taiwan; (K.-Y.L.); (T.-C.L.)
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, No.35, Keyan Rd., Zhunan Township, Miaoli County 35053, Taiwan
- Correspondence: (F.-H.L.); (C.-P.L.); Tel.: +886-2-2732-0443 (F.-H.L.); +886-2-2312-3456 (C.-P.L.)
| | - Chun-Pin Lin
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, No.1, Sec. 1, Ren’ai Rd., Zhongzheng Dist., Taipei 10051, Taiwan;
- National Taiwan University Hospital, College of Medicine, National Taiwan University, No.1, Changde St., Zhongzheng Dist., Taipei 10048, Taiwan
- Correspondence: (F.-H.L.); (C.-P.L.); Tel.: +886-2-2732-0443 (F.-H.L.); +886-2-2312-3456 (C.-P.L.)
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