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Deng J, Yu W, Wei Y, Deng X. A new era in restorative dentistry: in situ growth strategy. Sci Bull (Beijing) 2024; 69:17-21. [PMID: 38052699 DOI: 10.1016/j.scib.2023.11.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Affiliation(s)
- Jingjing Deng
- Beijing Laboratory of Biomedical Materials, Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - Weiyi Yu
- Beijing Laboratory of Biomedical Materials, Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - Yan Wei
- Beijing Laboratory of Biomedical Materials, Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China.
| | - Xuliang Deng
- Beijing Laboratory of Biomedical Materials, Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China.
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Xu J, Shi H, Luo J, Yao H, Wang P, Li Z, Wei J. Advanced materials for enamel remineralization. Front Bioeng Biotechnol 2022; 10:985881. [PMID: 36177189 PMCID: PMC9513249 DOI: 10.3389/fbioe.2022.985881] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 08/22/2022] [Indexed: 11/13/2022] Open
Abstract
Dental caries, a chronic and irreversible disease caused by caries-causing bacteria, has been listed as one of the three major human diseases to be prevented and treated. Therefore, it is critical to effectively stop the development of enamel caries. Remineralization treatment can control the progression of caries by inhibiting and reversing enamel demineralization at an early stage. In this process, functional materials guide the deposition of minerals on the damaged enamel, and the structure and hardness of the enamel are then restored. These remineralization materials have great potential for clinical application. In this review, advanced materials for enamel remineralization were briefly summarized, furthermore, an outlook on the perspective of remineralization materials were addressed.
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Affiliation(s)
- Jiarong Xu
- School of Stomatology, Nanchang University, Nanchang, Jiangxi, China
| | - Hui Shi
- School of Stomatology, Nanchang University, Nanchang, Jiangxi, China
- Jiangxi Province Clinical Research Center for Oral Diseases, Nanchang, China
| | - Jun Luo
- School of Stomatology, Nanchang University, Nanchang, Jiangxi, China
- Jiangxi Province Clinical Research Center for Oral Diseases, Nanchang, China
| | - Haiyan Yao
- School of Stomatology, Nanchang University, Nanchang, Jiangxi, China
- Jiangxi Province Key Laboratory of Oral Biomedicine, Nanchang, Jiangxi, China
| | - Pei Wang
- School of Stomatology, Nanchang University, Nanchang, Jiangxi, China
- Jiangxi Province Clinical Research Center for Oral Diseases, Nanchang, China
- Jiangxi Province Key Laboratory of Oral Biomedicine, Nanchang, Jiangxi, China
| | - Zhihua Li
- School of Stomatology, Nanchang University, Nanchang, Jiangxi, China
- Jiangxi Province Clinical Research Center for Oral Diseases, Nanchang, China
- Jiangxi Province Key Laboratory of Oral Biomedicine, Nanchang, Jiangxi, China
- *Correspondence: Zhihua Li, ; Junchao Wei,
| | - Junchao Wei
- School of Stomatology, Nanchang University, Nanchang, Jiangxi, China
- Jiangxi Province Clinical Research Center for Oral Diseases, Nanchang, China
- Jiangxi Province Key Laboratory of Oral Biomedicine, Nanchang, Jiangxi, China
- *Correspondence: Zhihua Li, ; Junchao Wei,
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Biomimetic Mineralization of Tooth Enamel Using Nanocrystalline Hydroxyapatite under Various Dental Surface Pretreatment Conditions. Biomimetics (Basel) 2022; 7:biomimetics7030111. [PMID: 35997431 PMCID: PMC9397024 DOI: 10.3390/biomimetics7030111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 11/17/2022] Open
Abstract
In this report, we demonstrated the formation of a biomimetic mineralizing layer obtained on the surface of dental enamel (biotemplate) using bioinspired nanocrystalline carbonate-substituted calcium hydroxyapatite (ncHAp), whose physical and chemical properties are closest to the natural apatite dental matrix, together with a complex of polyfunctional organic and polar amino acids. Using a set of structural, spectroscopy, and advanced microscopy techniques, we confirmed the formation of a nanosized ncHAp-based mineralized layer, as well as studying its chemical, substructural, and morphological features by means of various methods for the pretreatment of dental enamel. The pretreatment of a biotemplate in an alkaline solution of Ca(OH)2 and an amino acid booster, together with the executed subsequent mineralization with ncHAp, led to the formation of a mineralized layer with homogeneous micromorphology and the preferential orientation of the ncHAp nanocrystals. It was shown that the homogeneous crystallization of hydroxyapatite on the biotemplate surface and binding of individual nanocrystals and agglomerates into a single complex by an amino acid booster resulted in an increase (~15%) in the nanohardness value in the enamel rods area, compared to that of healthy natural enamel. Obtaining a similar hierarchy and cleavage characteristics as natural enamel in the mineralized layer, taking into account the micromorphological features of dental tissue, is an urgent problem for future research.
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Raman and XANES Spectroscopic Study of the Influence of Coordination Atomic and Molecular Environments in Biomimetic Composite Materials Integrated with Dental Tissue. NANOMATERIALS 2021; 11:nano11113099. [PMID: 34835863 PMCID: PMC8625886 DOI: 10.3390/nano11113099] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/11/2021] [Accepted: 11/15/2021] [Indexed: 12/18/2022]
Abstract
In this work, for the first time, the influence of the coordination environment as well as Ca and P atomic states on biomimetic composites integrated with dental tissue was investigated. Bioinspired dental composites were synthesised based on nanocrystalline calcium carbonate-substituted hydroxyapatite Ca4ICa6IIPO46−xCO3x+yOH2−y (nano-cHAp) obtained from a biogenic source and a set of polar amino acids that modelled the organic matrix. Biomimetic composites, as well as natural dental tissue samples, were investigated using Raman spectromicroscopy and synchrotron X-ray absorption near edge structure (XANES) spectroscopy. Molecular structure and energy structure studies revealed several important features related to the different calcium atomic environments. It was shown that biomimetic composites created in order to reproduce the physicochemical properties of dental tissue provide good imitation of molecular and electron energetic properties, including the carbonate anion CO32− and the atomic Ca/P ratio in nanocrystals. The features of the molecular structure of biomimetic composites are inherited from the nano-cHAp (to a greater extent) and the amino acid cocktail used for their creation, and are caused by the ratio between the mineral and organic components, which is similar to the composition of natural enamel and dentine. In this case, violation of the nano-cHAp stoichiometry, which is the mineral basis of the natural and bioinspired composites, as well as the inclusion of different molecular groups in the nano-cHAp lattice, do not affect the coordination environment of phosphorus atoms. The differences observed in the molecular and electron energetic structures of the natural enamel and dentine and the imitation of their properties by biomimetic materials are caused by rearrangement in the local environment of the calcium atoms in the HAp crystal lattice. The surface of the nano-cHAp crystals in the natural enamel and dentine involved in the formation of bonds with the organic matrix is characterised by the coordination environment of the calcium atom, corresponding to its location in the CaI position—that is, bound through common oxygen atoms with PO4 tetrahedrons. At the same time, on the surface of nano-cHAp crystals in bioinspired dental materials, the calcium atom is characteristically located in the CaII position, bound to the hydroxyl OH group. The features detected in the atomic and molecular coordination environment in nano-cHAp play a fundamental role in recreating a biomimetic dental composite of the natural organomineral interaction in mineralised tissue and will help to find an optimal way to integrate the dental biocomposite with natural tissue.
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Yanyan S, Guangxin W, Guoqing S, Yaming W, Wuhui L, Osaka A. Effects of amino acids on conversion of calcium carbonate to hydroxyapatite. RSC Adv 2020; 10:37005-37013. [PMID: 35521267 PMCID: PMC9057079 DOI: 10.1039/d0ra07636h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 09/30/2020] [Indexed: 11/21/2022] Open
Abstract
Conversion of calcium carbonate (calcite; CC) to hydroxyapatite (HAp) was examined when the CC particles of sub μm size were soaked at 37 °C for up to 10 d in 0.15 M K2HPO4 (20 ml), whose pH was set to 3-12. Here, the solution contained amino acids, such as glutamine (Glu), arginine (Arg), and glycine (Gly), and their content varied from 0-1.0 g per ml of solution. From the X-ray diffraction (XRD) intensity of the 104 and 211 diffractions of calcite and apatite, respectively, it was seen that the presence of the amino acids promoted the conversion. This was supported by the thermogravimetry (TG) results. The highest promotion was observed at 0.5 g addition of amino acids to the phosphate solution, while Glu showed the highest promotion among the amino acids and Gly the lowest. A scanning electron microscopy study indicated that petal-like HAp nano-crystallites covered the entire surface of the CC particles when they were soaked in the phosphate solution with 0.1 g or more of amino acid for 10 d. The XRD intensity ratio 104(CC)/211(HAp) indicated greater CC to HAp conversion in the solutions at pH 3 and 6 than in the more alkaline solutions. This was attributed to the dissolution of CC in the acidic solutions, which was confirmed by bubbling in these solutions.
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Affiliation(s)
- Sun Yanyan
- Department of Materials Science and Engineering, Henan University of Science and Technology Luoyang Henan Province 471023 China
| | - Wang Guangxin
- Department of Materials Science and Engineering, Henan University of Science and Technology Luoyang Henan Province 471023 China
| | - Sun Guoqing
- School of Vehicle Engineering, Luoyang Institute of Technology Luoyang Henan Province 471023 China
| | - Wang Yaming
- Department of Materials Science and Engineering, Henan University of Science and Technology Luoyang Henan Province 471023 China
| | - Li Wuhui
- Department of Materials Science and Engineering, Henan University of Science and Technology Luoyang Henan Province 471023 China
| | - Akiyoshi Osaka
- Department of Materials Science and Engineering, Henan University of Science and Technology Luoyang Henan Province 471023 China
- Faculty of Engineering, Okayama University Tsushima Okayama 700-8530 Japan
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Hanafy RA, Mostafa D, Abd El-Fattah A, Kandil S. Biomimetic chitosan against bioinspired nanohydroxyapatite for repairing enamel surfaces. BIOINSPIRED, BIOMIMETIC AND NANOBIOMATERIALS 2020; 9:85-94. [DOI: 10.1680/jbibn.19.00008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
In this study, chitosan was employed as a novel biomimetic mineralization model to repair damaged enamel to compare its performance with that of bioinspired zinc-doped nanohydroxyapatite. Fifty human premolar tooth slices were prepared, and artificial caries lesions were induced to produce demineralized enamel surfaces. The etched slices were randomly divided into two groups: a chitosan-hydrogel-treated group and a zinc-doped nanohydroxyapatite-treated group. In vitro assessment using energy-dispersive X-ray analysis, X-ray diffraction analysis and scanning electron microscopy was conducted at the baseline, demineralization and remineralization stages. Baseline results were matched with those for normal enamel; a marked reduction in the calcium (Ca)/phosphorus (P) ratio to 1·12 and the lack of the characteristic hydroxyapatite diffraction peaks were detected for demineralized enamel. The remineralization stage revealed evident recovery of the mineral contents (the calcium/phosphorus ratio was 1·61 for the chitosan-treated group and 1·58 for the bioinspired-nanohydroxyapatite-treated one), with apparent distinctive X-ray diffraction patterns of hydroxyapatite in both groups. Scanning electron microscopic analysis showed the absence of etched enamel porosity, with the formation of a newly formed rod-like apatite layer, similar to natural enamel, which extended over the treated enamel surfaces of both groups. Chitosan hydrogel is recommended as a biomimetic mineralization smart system for repairing demineralized carious enamel.
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Affiliation(s)
- Rania Ahmed Hanafy
- Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt; Department of Dental Biomaterials, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Dawlat Mostafa
- Department of Dental Biomaterials, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Ahmed Abd El-Fattah
- Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt; Department of Chemistry, College of Science, University of Bahrain, Sakhir, Kingdom of Bahrain
| | - Sherif Kandil
- Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
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Seredin PV, Uspenskaya OA, Goloshchapov DL, Ippolitov IY, Vongsvivut JP, Ippolitov YA. Organic-Mineral Interaction between Biomimetic Materials and Hard Dental Tissues. Sovrem Tekhnologii Med 2020; 12:43-50. [PMID: 34513036 PMCID: PMC8353705 DOI: 10.17691/stm2020.12.1.05] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Indexed: 01/03/2023] Open
Abstract
The aim of the investigation was to study the integration between native human dental tissue and new-generation biomimetic materials replicating the mineral-organic complex of dentin and enamel using IR microspectroscopy for multidimensional visualization and analysis.
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Affiliation(s)
- P V Seredin
- Senior Researcher, Department of Solid State Physics and Nanostructures, Voronezh State University, 1 University Square, Voronezh, 394018, Russia
| | - O A Uspenskaya
- Associate Professor, Head of the Department of Therapeutic Dentistry, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod, 603005, Russia
| | - D L Goloshchapov
- Leading Engineer, Department of Solid State Physics and Nanostructures, Voronezh State University, 1 University Square, Voronezh, 394018, Russia
| | - I Yu Ippolitov
- Tutor, Department of Pediatric Dentistry and Orthodontics, Voronezh State Medical University named after N.N. Burdenko, 10 Studencheskaya St., Voronezh, 394036, Russia
| | - Jitraporn Pimm Vongsvivut
- Beamline Scientist, IR Microspectroscopy, The Australian Synchrotron (Synchrotron Light Source Australia Pty LTD), 800 Blackburn Rd., Clayton VIC 3168, Melbourne, Australia
| | - Yu A Ippolitov
- Professor, Head of the Department of Pediatric Dentistry and Orthodontics, Voronezh State Medical University named after N.N. Burdenko, 10 Studencheskaya St., Voronezh, 394036, Russia
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Zhang Y, Wang Z, Jiang T, Wang Y. Biomimetic regulation of dentine remineralization by amino acid in vitro. Dent Mater 2018; 35:298-309. [PMID: 30545612 DOI: 10.1016/j.dental.2018.11.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 11/18/2018] [Accepted: 11/20/2018] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate the effect of conditioning solutions containing DL-aspartic amino (Asp) on dentine remineralization induced by bioactive glass 45S5 (BAG) in a simulated oral environment. METHODS Sixty dentine discs from human third molars were used. Dentine specimens were treated with ethylene diamine tetraacetic acid (EDTA) to create a partially demineralization model and randomly divided to 4 groups: Artificial saliva (AS) group, Asp group (pretreated with Asp and remineralized with distilled water), BAG group (pretreated with distilled water and remineralized by BAG), Asp-BAG group (pretreated with Asp and remineralized by BAG). Each samples were measured at various time points, and at the end of the experiment, 6% citric acid challenge were taken. The remineralization characteristics were analyzed by using the spectroscopic data from attenuated total reflectance spectroscopy (ATR-IR) and Raman spectroscopy. The micro-morphology and structure were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Dentine permeability was measured before and after each treatment to evaluate the resistance of remineralized layer to acid and simulated oral environment. RESULTS Both BAG and Asp-BAG groups significantly reduced dentine permeability and formed enamel-like apatite layers on dentine surface. For the mineralization of BAG, Asp showed inhibition effect. The 7-day mineral matrix area ratio in BAG group (12.54±2.29) was lower than the value in the Asp-BAG group (17.77±2.27) (p<0.05) and the Raman intensity (RI%) in Asp-BAG Group (1.49±0.26) was also significantly higher than that of BAG group (1.34±0.14) (p<0.05). According to permeability test, the apatite layer in BAG group and Asp-BAG group effectively occluded the dentinal tubules (p<0.05) and had certain acidic resistance (p>0.05). Furthermore, adsorbed acidic amino acid on hydroxyapatite (HAP) altered the crystal to increase into a larger size in diameter during crystal growth. SIGNIFICANCE The study demonstrated that a superior remineralization efficacy of BAG with Asp pretreatment on dentine.
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Affiliation(s)
- Yuanmei Zhang
- Department of Stomatology, the First Affiliated Hospital of Zhengzhou University, No.1, Jianshe East Road, Zhengzhou, China.
| | - Zhejun Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, 237# Luoyu Road, Wuhan 430079, China; Division of Endodontics, Department of Oral Biological & Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, Canada
| | - Tao Jiang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, 237# Luoyu Road, Wuhan 430079, China
| | - Yining Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, 237# Luoyu Road, Wuhan 430079, China.
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Wang K, Wang Y, Zhao X, Li Y, Yang T, Zhang X, Wu X. Sustained release of simvastatin from hollow carbonated hydroxyapatite microspheres prepared by aspartic acid and sodium dodecyl sulfate. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:565-571. [DOI: 10.1016/j.msec.2017.02.066] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Revised: 11/09/2016] [Accepted: 02/14/2017] [Indexed: 11/16/2022]
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