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Jadhav GR, Mittal P, Shinde S, Al-Qarni MA, Al-Obaid M, Abullais SS, Cicciù M, Minervini G. Biomimetic approach to strengthen the incisal fracture composite build-up: an in vitro study. BMC Oral Health 2024; 24:42. [PMID: 38191343 PMCID: PMC10773035 DOI: 10.1186/s12903-023-03679-4] [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: 09/28/2023] [Accepted: 11/20/2023] [Indexed: 01/10/2024] Open
Abstract
OBJECTIVE Incisal composite build-up shows a high failure susceptibility. The incorporation of fiber-reinforced composite (FRC) during composite restoration could improve its strength. Hence the study was planned to compare the effect of various positions of FRC on the strength of composite resin incisal build-ups. METHODS In maxillary incisors (n = 90), 3 mm of the incisal edge was cut and teeth were categorized into three groups based on the location and number of fibers used during incisal composite build-up - Group I: composite resin; Group II: composite resin and a single fiber palatally and Group III: composite resin along with two fibers palatally. RESULTS The data showed that group II had the maximum load-bearing values followed by group I and group III. CONCLUSION Within the confines of our study, it can be concluded that the addition of FRC to the conventional incisal composite build-up increased the overall strength restoration. Such composite restoration reinforced with a single fiber on the palatal side showed the highest load-bearing capacity compared to two fibers reinforced and unreinforced composites. The common mode of failure in group I was in composite resin, in two fibers reinforced at fibers-composite junction, and in one fiber reinforced composite was in the remaining part of the tooth.
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Affiliation(s)
| | - Priya Mittal
- Department of Conservative Dentistry and Endodontics, Swargiya Dadasaheb Kalmegh Smruti Dental College & Hospital, Nagpur, India.
| | - Siddharth Shinde
- Department of Orthodontics and Dentofacial Orthopedics, Bharati Vidyapeeth (Deemed to be University) Dental College and Hospital, Pune, Maharashtra, India
| | - Mohammed A Al-Qarni
- Department of Restorative Dental Sciences, College of Dentistry, King Khalid University, Abha, 61471, Saudi Arabia
| | - Mohammed Al-Obaid
- Department of Restorative Dental Sciences, College of Dentistry, King Khalid University, Abha, 61471, Saudi Arabia
| | - Shahabe Saquib Abullais
- Department of Periodontics and Community Dental Sciences, King Khalid University, 61421, Abha, KSA, Saudi Arabia
| | - Marco Cicciù
- Department of Biomedical and Surgical and Biomedical Sciences, Catania University, Catania, 95123, Italy
| | - Giuseppe Minervini
- Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, Tamil Nadu, India.
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania "Luigi Vanvitelli", Caserta, 81100, Italy.
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Wang MC, Chang KW, Lin SC, Hsu LH, Hung PS. Dental pulp cells cocultured with macrophages aggravate the inflammatory conditions stimulated by LPS. BMC Oral Health 2023; 23:991. [PMID: 38071305 PMCID: PMC10710708 DOI: 10.1186/s12903-023-03625-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/05/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Pulp inflammation is complex interactions between different types of cells and cytokines. To mimic the interactions of different types of cells in inflamed dental pulp tissues, dental pulp cells (DPCs) were cocultured with different ratios of macrophages (THP-1) or LPS treatment. METHODS DPCs were cocultured with various ratios of THP-1, then photographed cell morphology and determined cell viability by MTT assay at preset times. Total RNA was also extracted to measure the inflammation marker-IL-6 and IL-8 expressions by RT-Q-PCR. The DPCs and THP-1 were treated with 0.01 - 1μg/ml lipopolysaccharide (LPS) and extract RNA at preset times, and detected IL-6 and IL-8 expression. DPCs were cocultured with various ratios of THP-1 with 0.1 μg/mL LPS, and detected IL-6 and IL-8 expression after 24 and 48 h. The data were analyzed by unpaired t-test or Mann-Whitney test. Differences were considered statistically significant when p < 0.05. RESULTS THP-1 and DPCs coculture models did not suppress the viability of DPCs and THP-1. Cocultured with various ratios of THP-1 could increase IL-6 and IL-8 expressions of DPCs (p = 0.0056 - p < 0.0001). The expressions of IL-6 and IL-8 were stronger in higher ratio groups (p = 0.0062 - p < 0.0001). LPS treatment also induced IL-6 and IL-8 expressions of DPCs and THP-1 (p = 0.0179 - p < 0.0001 and p = 0.0189 - p < 0.0001, separately). Under the presence of 0.1 μg/mL LPS, DPCs cocultured with THP-1 for 24 h also enhanced IL-6 and IL-8 expression (p = 0.0022). After cocultured with a higher ratio of THP-1 for 48 h, IL-6 and IL-8 expressions were even stronger in the presence of LPS (p = 0.0260). CONCLUSIONS Coculturing dental pulp cells and macrophages under LPS treatment aggravate the inflammatory process. The responses of our models were more severe than traditional inflamed dental models and better represented what happened in the real dental pulp. Utilizing our models to explore the repair and regeneration in endodontics will be future goals.
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Affiliation(s)
- Min-Ching Wang
- Division of Pediatric Dentistry, Department of Dentistry, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Kuo-Wei Chang
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Institute of Oral Biology, School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Shu-Chun Lin
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Institute of Oral Biology, School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Ling-Hsin Hsu
- Department of Dentistry, Taipei City Hospital, Taipei, Taiwan
| | - Pei-Shih Hung
- Institute of Oral Biology, School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan.
- Department of Medical Research, National Yang Ming Chiao Tung University Hospital, Yilan, Taiwan.
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Jimenez-Bueno I, Garcia-Contreras R, Aranda-Herrera B, Sakagami H, Lopez-Ayuso CA, Nakajima H, Jurado CA, Nurrohman H. Cytotoxicity, Differentiation, and Biocompatibility of Root-End Filling: A Comprehensive Study. Biomimetics (Basel) 2023; 8:514. [PMID: 37999155 PMCID: PMC10669418 DOI: 10.3390/biomimetics8070514] [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: 09/20/2023] [Revised: 10/11/2023] [Accepted: 10/26/2023] [Indexed: 11/25/2023] Open
Abstract
Assessing the biocompatibility of endodontic root-end filling materials through cell line responses is both essential and of utmost importance. This study aimed to the cytotoxicity of the type of cell death through apoptosis and autophagy, and odontoblast cell-like differentiation effects of MTA, zinc oxide-eugenol, and two experimental Portland cements modified with bismuth (Portland Bi) and barium (Portland Ba) on primary cell cultures. Material and methods: The cells corresponded to human periodontal ligament and gingival fibroblasts (HPLF, HGF), human pulp cells (HPC), and human squamous carcinoma cells from three different patients (HSC-2, -3, -4). The cements were inoculcated in different concentrations for cytotoxicity evaluation, DNA fragmentation in electrophoresis, apoptosis caspase activation, and autophagy antigen reaction, odontoblast-like cells were differentiated and tested for mineral deposition. The data were subject to a non-parametric test. Results: All cements caused a dose-dependent reduction in cell viability. Contact with zinc oxide-eugenol induced neither DNA fragmentation nor apoptotic caspase-3 activation and autophagy inhibitors (3-methyladenine, bafilomycin). Portland Bi accelerated significantly (p < 0.05) the differentiation of odontoblast-like cells. Within the limitation of this study, it was concluded that Portland cement with bismuth exhibits cytocompatibility and promotes odontoblast-like cell differentiation. This research contributes valuable insights into biocompatibility, suggesting its potential use in endodontic repair and biomimetic remineralization.
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Affiliation(s)
- Ignacio Jimenez-Bueno
- Department of Endodontics, Faculty of Dentistry, Autonomous University State of Mexico (UAEMex), Toluca 50130, State of Mexico, Mexico;
| | - Rene Garcia-Contreras
- Interdisciplinary Research Laboratory, Nanostructures and Biomaterials Area, National School of Higher Studies (ENES) Leon, National Autonomous University of Mexico (UNAM), Leon 37684, Guanajuato, Mexico; (R.G.-C.); (C.A.L.-A.)
| | - Benjamin Aranda-Herrera
- Interdisciplinary Research Laboratory, Nanostructures and Biomaterials Area, National School of Higher Studies (ENES) Leon, National Autonomous University of Mexico (UNAM), Leon 37684, Guanajuato, Mexico; (R.G.-C.); (C.A.L.-A.)
| | - Hiroshi Sakagami
- Meikai University Research Institute of Odontology (M-RIO), Meikai University School of Dentistry, Sakado 350-0283, Saitama, Japan;
| | - Christian Andrea Lopez-Ayuso
- Interdisciplinary Research Laboratory, Nanostructures and Biomaterials Area, National School of Higher Studies (ENES) Leon, National Autonomous University of Mexico (UNAM), Leon 37684, Guanajuato, Mexico; (R.G.-C.); (C.A.L.-A.)
| | - Hiroshi Nakajima
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, Sakado 350-0283, Saitama, Japan
| | - Carlos A. Jurado
- Department of Prosthodontics, The University of Iowa College of Dentistry and Dental Clinics, Iowa City, IA 52242, USA
| | - Hamid Nurrohman
- Department of Restorative Dentistry & Prosthodontics, University of Texas School of Dentistry, Houston, TX 77054, USA
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Panahipour L, Abbasabadi AO, Gruber R. Gingival Fibroblasts Are Sensitive to Oral Cell Lysates Indicated by Their IL11 Expression. Bioengineering (Basel) 2023; 10:1193. [PMID: 37892923 PMCID: PMC10604186 DOI: 10.3390/bioengineering10101193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/05/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
Damaged cells that appear as a consequence of invasive dental procedures or in response to dental materials are supposed to release damage-associated signals. These damage-associated signals not only support tissue regeneration but might also contribute to unwanted fibrosis. The aim of this study was to identify a molecular target that reflects how fibroblasts respond to necrotic oral tissue cells. To simulate the cell damage, we prepared necrotic cell lysates by sonication of the osteocytic cell line IDG-SW3 and exposed them to gingival fibroblasts. RNAseq revealed a moderate increase in IL11 expression in the gingival fibroblasts, a pleiotropic cytokine involved in fibrosis and inflammation, and also in regeneration following trauma. Necrotic lysates of the human squamous carcinoma cell lines HSC2 and TR146, as well as of gingival fibroblasts, however, caused a robust increase in IL11 expression in the gingival fibroblasts. Consistently, immunoassay revealed significantly increased IL11 levels in the gingival fibroblasts when exposed to the respective lysates. Considering that IL11 is a TGF-β target gene, IL11 expression was partially blocked by SB431542, a TGF-β receptor type I kinase inhibitor. Moreover, lysates from the HSC2, TR146, and gingival fibroblasts caused a moderate smad2/3 nuclear translocation in the gingival fibroblasts. Taken together and based on IL11 expression, our findings show that fibroblasts are sensitive to damaged oral tissue cells.
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Affiliation(s)
- Layla Panahipour
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria; (L.P.); (A.O.A.)
| | - Azarakhsh Oladzad Abbasabadi
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria; (L.P.); (A.O.A.)
| | - Reinhard Gruber
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria; (L.P.); (A.O.A.)
- Department of Periodontology, School of Dental Medicine, University of Bern, 3010 Bern, Switzerland
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
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5
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Elashiry MM, Raafat SN, Tay FR, Saber SM. Effect of rapamycin on human periodontal ligament stem cells that have been exposed to sodium hypochlorite. Life Sci 2023; 329:121989. [PMID: 37524163 DOI: 10.1016/j.lfs.2023.121989] [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: 05/31/2023] [Revised: 07/20/2023] [Accepted: 07/28/2023] [Indexed: 08/02/2023]
Abstract
AIMS The present study investigated the effect of rapamycin on the viability and osteogenic differentiation potential of human periodontal ligament stem cells (hPDLSCs) in the presence of sodium hypochlorite (NaOCl). MAIN METHODS After determining the minimum inhibitory concentration of NaOCl and optimum concentration of rapamycin, the viability of hPDLSCs was evaluated using the MTT assay subsequent to their exposure to NaOCl, rapamycin, or a combination of both. Osteogenic differentiation was evaluated by the cell mineralization assay performed by alizarin red S staining, alkaline phosphatase activity, and monitoring the expression of osteogenic genes markers Runt-related transcription factor 2, osteocalcin, and osteoprotegerin, using real-time quantitative polymerase chain reaction (RT-qPCR). The expression of autophagy-related genes PI3K, Akt, and mTOR, was also analyzed with RT-qPCR. KEY FINDINGS Stem cells treated with rapamycin showed the highest percentage of viable cells in the presence of NaOCl. The same trend was observed for all osteogenic differentiation assays. The hPDLSCs treated with rapamycin demonstrated the highest calcium nodule deposition, alkaline phosphatase activity, and the expression of osteogenic gene markers. These effects were not adversely affected by the presence of NaOCl. Rapamycin significantly inhibited mTOR gene expression, while there were no differences in the gene expression of PI3K and Akt. SIGNIFICANCE Rapamycin counteracts the cytotoxic effect of NaOCl by enhancing the viability and osteogenic differentiation potential of hPDLSCs. Rapamycin appears to accomplish these processes via autophagy activation, by inhibiting mTOR gene expression. The incorporation of rapamycin in regenerative endodontic therapy may encourage a higher success rate.
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Affiliation(s)
- Mohamed M Elashiry
- Department of Endodontics, Dental College of Georgia, Augusta University, GA, USA; Department of Endodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt.
| | - Shereen N Raafat
- Department of Pharmacology, Faculty of Dentistry, The British University in Egypt, Egypt; Center of Innovative Dental Sciences (CIDS), Faculty of Dentistry, The British University in Egypt, Egypt
| | - Franklin R Tay
- Department of Endodontics, Dental College of Georgia, Augusta University, GA, USA
| | - Shehabeldin M Saber
- Department of Endodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt; Center of Innovative Dental Sciences (CIDS), Faculty of Dentistry, The British University in Egypt, Egypt; Department of Endodontics, Faculty of Dentistry, The British University in Egypt, Egypt
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Iandolo A, Pisano M, Buonavoglia A, Giordano F, Amato A, Abdellatif D. Traditional and Recent Root Canal Irrigation Methods and Their Effectiveness: A Review. Clin Pract 2023; 13:1059-1072. [PMID: 37736930 PMCID: PMC10514886 DOI: 10.3390/clinpract13050094] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 08/25/2023] [Accepted: 08/25/2023] [Indexed: 09/23/2023] Open
Abstract
According to contemporary dental standards, the primary goal of endodontic therapy is the chemo-mechanical cleaning of the complex root canal system. Watering root canals with approved solutions and activating them are essential parts of this operation. This review outlines various irrigant activation methods for root canal therapy. Specifically, a comparison among the methods of manual dynamic activation, sonics (subsonic, sonic, and ultrasonic), internal heating, and lasers, was conducted. The results in this work were gathered using Scopus, Web of Science, Google Scholar, and PubMed databases by searching the following keywords: sodium hypochlorite, cleaning, activation, and irrigation methods. The present work concluded that the use of irrigant activation has a greater benefit than its absence. Regardless, it is impossible to point to a single effective activation method.
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Affiliation(s)
- Alfredo Iandolo
- Department of Medicine and Surgery, School of Dentistry, University of Salerno, 84081 Salerno, Italy; (M.P.); (F.G.); (A.A.)
| | - Massimo Pisano
- Department of Medicine and Surgery, School of Dentistry, University of Salerno, 84081 Salerno, Italy; (M.P.); (F.G.); (A.A.)
| | - Alessio Buonavoglia
- Department of Biomedical and Neuromotor Sciences, School of Dentistry, University of Bologna, 40125 Bologna, Italy;
| | - Francesco Giordano
- Department of Medicine and Surgery, School of Dentistry, University of Salerno, 84081 Salerno, Italy; (M.P.); (F.G.); (A.A.)
| | - Alessandra Amato
- Department of Medicine and Surgery, School of Dentistry, University of Salerno, 84081 Salerno, Italy; (M.P.); (F.G.); (A.A.)
| | - Dina Abdellatif
- Department of Endodontics, Faculty of Dentistry, University of Alexandria, Alexandria 21531, Egypt;
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Hengtrakool C, Wanichpakorn S, Kedjarune-Leggat U. Chitosan Resin-Modified Glass Ionomer Cement Containing Epidermal Growth Factor Promotes Pulp Cell Proliferation with a Minimum Effect on Fluoride and Aluminum Release. Polymers (Basel) 2023; 15:3511. [PMID: 37688136 PMCID: PMC10490150 DOI: 10.3390/polym15173511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/17/2023] [Accepted: 08/17/2023] [Indexed: 09/10/2023] Open
Abstract
The development of biomaterials that are able to control the release of bioactive molecules is a challenging task for regenerative dentistry. This study aimed to enhance resin-modified glass ionomer cement (RMGIC) for the release of epidermal growth factor (EGF). This RMGIC was formulated from RMGIC powder supplemented with 15% (w/w) chitosan at a molecular weight of either 62 or 545 kDa with 5% bovine serum albumin mixed with the same liquid component as the Vitrebond. EGF was added while mixing. ELISA was used to determine EGF release from the specimen immersed in phosphate-buffered saline at 1 h, 3 h, 24 h, 3 d, 1 wk, 2 wks, and 3 wks. Fluoride and aluminum release at 1, 3, 5, and 7 d was measured by electrode and inductively coupled plasma optical emission spectrometry. Pulp cell viability was examined through MTT assays and the counting of cell numbers using a Coulter counter. The RMGIC with 65 kDa chitosan is able to prolong the release of EGF for significantly longer than RMGIC for at least 3 wks due to its retained bioactivity in promoting pulp cell proliferation. This modified RMGIC can prolong the release of fluoride, with a small amount of aluminum also released for a limited time. This biomaterial could be useful in regenerating pulp-dentin complexes.
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Affiliation(s)
- Chanothai Hengtrakool
- Department of Conservative Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand;
| | - Supreya Wanichpakorn
- Department of Oral Biology and Occlusion, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand;
- Cell Biology and Biomaterials Research Unit, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Ureporn Kedjarune-Leggat
- Department of Oral Biology and Occlusion, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand;
- Cell Biology and Biomaterials Research Unit, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
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Singer L, Fouda A, Bourauel C. Biomimetic approaches and materials in restorative and regenerative dentistry: review article. BMC Oral Health 2023; 23:105. [PMID: 36797710 PMCID: PMC9936671 DOI: 10.1186/s12903-023-02808-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 02/10/2023] [Indexed: 02/18/2023] Open
Abstract
Biomimetics is a branch of science that explores the technical beauty of nature. The concept of biomimetics has been brilliantly applied in famous applications such as the design of the Eiffel Tower that has been inspired from the trabecular structure of bone. In dentistry, the purpose of using biomimetic concepts and protocols is to conserve tooth structure and vitality, increase the longevity of restorative dental treatments, and eliminate future retreatment cycles. Biomimetic dental materials are inherently biocompatible with excellent physico-chemical properties. They have been successfully applied in different dental fields with the advantages of enhanced strength, sealing, regenerative and antibacterial abilities. Moreover, many biomimetic materials were proven to overcome significant limitations of earlier available generation counterpart. Therefore, this review aims to spot the light on some recent developments in the emerging field of biomimetics especially in restorative and regenerative dentistry. Different approaches of restoration, remineralisation and regeneration of teeth are also discussed in this review. In addition, various biomimetic dental restorative materials and tissue engineering materials are discussed.
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Affiliation(s)
- Lamia Singer
- Oral Technology, University Hospital Bonn, 53111, Bonn, North Rhine-Westphalia, Germany. .,Department of Orthodontics, University Hospital Bonn, 53111, Bonn, North Rhine-Westphalia, Germany.
| | - Ahmed Fouda
- grid.15090.3d0000 0000 8786 803XOral Technology, University Hospital Bonn, 53111 Bonn, North Rhine-Westphalia Germany ,grid.33003.330000 0000 9889 5690Department of Fixed Prosthodontics, Suez Canal University, Ismailia, Egypt
| | - Christoph Bourauel
- grid.15090.3d0000 0000 8786 803XOral Technology, University Hospital Bonn, 53111 Bonn, North Rhine-Westphalia Germany
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