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Lin CY, Chen RS, Hsu SH, Chen MH. A tricalcium phosphate (TCP) and hydroxyapatite (HA) based light-cured biomaterial for vital pulp therapy. Dent Mater 2024; 40:1417-1424. [PMID: 38937202 DOI: 10.1016/j.dental.2024.06.009] [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: 05/09/2024] [Accepted: 06/03/2024] [Indexed: 06/29/2024]
Abstract
OBJECTIVES Evaluate a new light-cured material with better properties for vital pulp therapy. METHODS Light-cured resin materials consisted of polyethylene glycol (600) diacrylate mixed with different ratios of TCP to HA. In addition to the temperature change (n = 5 for each subgroup) were tested, cell viability and Alizarin Red Staining (ARS) assay were also tested in vitro on human dental pulp cells (n = 6 for each subgroup). Lastly, the material was then compared with Biodentine and control groups in the molars of Wistar rats in vivo for histology assessment. RESULTS The temperature change for the new materials were under 5 degrees Celsius. For the in vitro assessments, there was no significant difference on day 3 and day 7 for cell viability test. ARS assay showed significantly higher mineralized nodule formation when treated without induction medium for Group D and Biodentine on day 10 compared to Group C and control. On the contrary, Biodentine and control groups treated with induction medium showed significant higher mineralization than the new materials. Histology assessments demonstrated higher mineralized content in Group D and Biodentine on week 3 and week 6. The inflammatory cells in the dental pulp complex of the Biodentine group resolved on week 6 while the inflammation resolved in Group D on week 3. SIGNIFICANCE The new material exhibits low heat production, low cytotoxicity, and good calcium ion release capability. Compared to traditional materials, it has shorter setting time and better aesthetic outcomes, making it highly suitable for use in vital pulp therapy.
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Affiliation(s)
- Chun-Yen Lin
- School of Dentistry, Tri-Service General Hospital and National Defense Medical Center, No. 325, Section 2, Chenggong Rd., Neihu Dist., Taipei City 114202, Taiwan, ROC; Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, No. 15-2, Gongyuan Rd., Zhongzheng Dist., Taipei City 100227, Taiwan, ROC
| | - Rung-Shu Chen
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, No. 15-2, Gongyuan Rd., Zhongzheng Dist., Taipei City 100227, Taiwan, ROC
| | - Sheng-Hao Hsu
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, No. 15-2, Gongyuan Rd., Zhongzheng Dist., Taipei City 100227, Taiwan, ROC
| | - Min-Huey Chen
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, No. 15-2, Gongyuan Rd., Zhongzheng Dist., Taipei City 100227, Taiwan, ROC; Department of Dentistry, National Taiwan University Hospital, No. 15-2, Gongyuan Rd., Zhongzheng Dist., Taipei City 100227, Taiwan, ROC.
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Atta H, Mahmoud KR, Salim ESI, Elmohsnawy E, El-Shaer A. Correlation between positron annihilation lifetime and photoluminescence measurements for calcined Hydroxyapatite. Sci Rep 2024; 14:10370. [PMID: 38710708 DOI: 10.1038/s41598-024-59855-1] [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: 11/27/2023] [Accepted: 04/16/2024] [Indexed: 05/08/2024] Open
Abstract
Hydroxyapatite (HAp) Ca10(PO4)6(OH)2 is a compound that has stable chemical properties, composition, and an affinity for human bone. As a result, it can be used in odontology, cancer treatment, and orthopedic grafts to repair damaged bone. To produce calcined HAp at 600 °C with different pH values, a wet chemical precipitation method was employed. All synthesized HAp samples were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), photoluminescence (PL), Zeta potential, and positron annihilation lifetime spectroscopy (PALS). The XRD results revealed that all calcined HAp samples were formed in a hexagonal structure with a preferred (002) orientation at different pH values. The crystal size of the samples was determined using the Scherrer equation, which ranged from 16 to 25 nm. The SEM and TEM results showed that the morphology of the samples varied from nanorods to nanospheres and rice-like structures depending on the pH value of the sample. The PL measurements indicated that the blue and green emission peaks of HAp were due to defects (bulk, surface, and interface) in the samples, which created additional energy levels within the band gap. According to Zeta potential measurements, the charge carrier changed from a positive to negative value, ranging from 3.94 mV to - 2.95 mV. PALS was used to understand the relationship between the defects and the photoluminescence (PL) properties of HAp. Our results suggest that HAp nanoparticles have excellent potential for developing non-toxic biomedical and optical devices for phototherapy.
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Affiliation(s)
- Hoda Atta
- Physics Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt.
| | - Kamal R Mahmoud
- Physics Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt.
| | - El Sayed I Salim
- Research Lab. of Molecular Carcinogenesis, Zoology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Eithar Elmohsnawy
- Department of Botany, Faculty of Science, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - Abdelhamid El-Shaer
- Physics Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt.
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Wang J, Zhang L, Wang K. Bioactive ceramic-based materials: beneficial properties and potential applications in dental repair and regeneration. Regen Med 2024; 19:257-278. [PMID: 39118532 PMCID: PMC11321270 DOI: 10.1080/17460751.2024.2343555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 04/12/2024] [Indexed: 08/10/2024] Open
Abstract
Bioactive ceramics, primarily consisting of bioactive glasses, glass-ceramics, calcium orthophosphate ceramics, calcium silicate ceramics and calcium carbonate ceramics, have received great attention in the past decades given their biocompatible nature and excellent bioactivity in stimulating cell proliferation, differentiation and tissue regeneration. Recent studies have tried to combine bioactive ceramics with bioactive ions, polymers, bioactive proteins and other chemicals to improve their mechanical and biological properties, thus rendering them more valid in tissue engineering scaffolds. This review presents the beneficial properties and potential applications of bioactive ceramic-based materials in dentistry, particularly in the repair and regeneration of dental hard tissue, pulp-dentin complex, periodontal tissue and bone tissue. Moreover, greater insights into the mechanisms of bioactive ceramics and the development of ceramic-based materials are provided.
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Affiliation(s)
- Jiale Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No.14, Section 3rd of Renmin South Road, Chengdu, 610041, China
| | - Linglin Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No.14, Section 3rd of Renmin South Road, Chengdu, 610041, China
| | - Kun Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No.14, Section 3rd of Renmin South Road, Chengdu, 610041, China
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Li A, Li Z, Chiu W, Xiong C, Chen Q, Chen J, Lai X, Li W, Ke Q, Liu J, Zhang X. Efficient Treatment of Pulpitis via Transplantation of Human Pluripotent Stem Cell-Derived Pericytes Partially through LTBP1-Mediated T Cell Suppression. Biomedicines 2023; 11:3199. [PMID: 38137420 PMCID: PMC10740489 DOI: 10.3390/biomedicines11123199] [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: 09/28/2023] [Revised: 11/10/2023] [Accepted: 11/23/2023] [Indexed: 12/24/2023] Open
Abstract
Dental pulp pericytes are reported to have the capacity to generate odontoblasts and express multiple cytokines and chemokines that regulate the local immune microenvironment, thus participating in the repair of dental pulp injury in vivo. However, it has not yet been reported whether the transplantation of exogenous pericytes can effectively treat pulpitis, and the underlying molecular mechanism remains unknown. In this study, using a lineage-tracing mouse model, we showed that most dental pulp pericytes are derived from cranial neural crest. Then, we demonstrated that the ablation of pericytes could induce a pulpitis-like phenotype in uninfected dental pulp in mice, and we showed that the significant loss of pericytes occurs during pupal inflammation, implying that the transplantation of pericytes may help to restore dental pulp homeostasis during pulpitis. Subsequently, we successfully generated pericytes with immunomodulatory activity from human pluripotent stem cells through the intermediate stage of the cranial neural crest with a high level of efficiency. Most strikingly, for the first time we showed that, compared with the untreated pulpitis group, the transplantation of hPSC-derived pericytes could substantially inhibit vascular permeability (the extravascular deposition of fibrinogen, ** p < 0.01), alleviate pulpal inflammation (TCR+ cell infiltration, * p < 0.05), and promote the regeneration of dentin (** p < 0.01) in the mouse model of pulpitis. In addition, we discovered that the knockdown of latent transforming growth factor beta binding protein 1 (LTBP1) remarkably suppressed the immunoregulation ability of pericytes in vitro and compromised their in vivo regenerative potential in pulpitis. These results indicate that the transplantation of pericytes could efficiently rescue the aberrant phenotype of pulpal inflammation, which may be partially due to LTBP1-mediated T cell suppression.
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Affiliation(s)
- Anqi Li
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; (A.L.); (W.C.)
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
| | - Zhuoran Li
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou 510080, China; (Z.L.); (C.X.); (Q.C.); (J.C.); (W.L.); (Q.K.)
| | - Weicheng Chiu
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; (A.L.); (W.C.)
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
| | - Chuanfeng Xiong
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou 510080, China; (Z.L.); (C.X.); (Q.C.); (J.C.); (W.L.); (Q.K.)
| | - Qian Chen
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou 510080, China; (Z.L.); (C.X.); (Q.C.); (J.C.); (W.L.); (Q.K.)
| | - Junhua Chen
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou 510080, China; (Z.L.); (C.X.); (Q.C.); (J.C.); (W.L.); (Q.K.)
| | - Xingqiang Lai
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518033, China;
| | - Weiqiang Li
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou 510080, China; (Z.L.); (C.X.); (Q.C.); (J.C.); (W.L.); (Q.K.)
- Guangdong Key Laboratory of Reproductive Medicine, Guangzhou 510080, China
| | - Qiong Ke
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou 510080, China; (Z.L.); (C.X.); (Q.C.); (J.C.); (W.L.); (Q.K.)
| | - Jia Liu
- VIP Medical Service Center, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China
| | - Xinchun Zhang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; (A.L.); (W.C.)
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
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Vohra F, Alamri RR, Almohsen FO, El Mourad AM, Farooq I, Alsaif R. Fiber post bonding with beta-tricalcium phosphate incorporated root dentin adhesive. SEM, EDX, FTIR, rheometric and bond strength study. Microsc Res Tech 2023. [PMID: 37129273 DOI: 10.1002/jemt.24330] [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: 03/05/2023] [Revised: 04/06/2023] [Accepted: 04/08/2023] [Indexed: 05/03/2023]
Abstract
The aim was to formulate an experimental adhesive (EA) and added nanoparticles (NPs) of beta-tricalcium phosphate (β-TCP) to see the impact on pushout bond strength (PBS) and other mechanical properties. Three adhesives were prepared, including EA (control, without β-TCP NPs), 2.5%-β-TCP NPs containing adhesive (2.5%-NPA), and 5% β-TCP NPs containing adhesive (5%-NPA). For the characterization of the NPs, scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) spectroscopy was accomplished. For the adhesive's characterization, rheological assessment, and degree of conversion (DC) analysis were performed. PBS of these adhesives against resin fiber post to root dentin, interfacial failure categories, and resin dentin interface analysis were also assessed. The β-TCP NPs were seen as agglomerated asymmetrical particles on SEM. These NPs were composed primarily of calcium (Ca), and phosphorus (P). Rheological evaluation of the adhesive's showed a drop in the viscosity of all adhesives at greater angular frequencies. The greatest DC was detected for the EA group (67.54 ± 7.9) followed by 2.5%-NPA group (45.32 ± 5.1), whereas the lowest DC values were seen for the 5%-NPA group (38.97 ± 6.5). Concerning PBS, the 2.5%-NPA revealed the highest values at the coronal (12.81 ± 3.0) and middle (8.50 ± 2.3) sections, whereas, for the apical section, the highest PBS values were seen for the 5%-NPA (4.9 ± 1.6). Most of the failures for all adhesive groups were seen at the adhesive-dentin interface (cohesive type failures) for all root segments (coronal, middle, and apical). The resin-dentin interface analysis verified hybrid layer and resin tag formation for all adhesives, but the presence of dispersed β-TCP NPs was only seen in the two NP-reinforced adhesives. The adding of β-TCP NPs in the adhesive could be beneficial as it could improve its PBS. Suitable rheological properties and dentin interaction were also observed for NP-reinforced adhesives. A reduced DC was seen for both β-TCP NP-containing adhesives as compared to the EA. RESEARCH HIGHLIGHTS: Experimental adhesives were reinforced with beta-tricalcium phosphate (β-TCP) nanocrystals. The β-TCP NPs were seen as agglomerated asymmetrical particles on SEM. These NPs were composed primarily of calcium (Ca), and phosphorus (P). β-TCP adhesives demonstrated superior pushout bond strength and a drop in the adhesive viscosity at greater angular frequencies compared to control adhesive. The greatest DC was detected for the EA group followed by 2.5%- β-TCP group, whereas the lowest DC values were for the 5%- β-TCP group.
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Affiliation(s)
- Fahim Vohra
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Renad R Alamri
- Intern, Department of General Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Fatimah O Almohsen
- Intern, Department of General Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Aminah M El Mourad
- Department of Restorative Dental Science, Operative Division, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Imran Farooq
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Rawan Alsaif
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
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6
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Hassouna A, Elgharbawy H, Morsy R. Development of porous scaffolds based on the in situ synthesis of biphasic calcium phosphate in a gelatin-polyvinyl alcohol matrix for bone tissue engineering. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.134951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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7
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Fan J, Abedi-Dorcheh K, Sadat Vaziri A, Kazemi-Aghdam F, Rafieyan S, Sohrabinejad M, Ghorbani M, Rastegar Adib F, Ghasemi Z, Klavins K, Jahed V. A Review of Recent Advances in Natural Polymer-Based Scaffolds for Musculoskeletal Tissue Engineering. Polymers (Basel) 2022; 14:polym14102097. [PMID: 35631979 PMCID: PMC9145843 DOI: 10.3390/polym14102097] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/09/2022] [Accepted: 05/17/2022] [Indexed: 02/01/2023] Open
Abstract
The musculoskeletal (MS) system consists of bone, cartilage, tendon, ligament, and skeletal muscle, which forms the basic framework of the human body. This system plays a vital role in appropriate body functions, including movement, the protection of internal organs, support, hematopoiesis, and postural stability. Therefore, it is understandable that the damage or loss of MS tissues significantly reduces the quality of life and limits mobility. Tissue engineering and its applications in the healthcare industry have been rapidly growing over the past few decades. Tissue engineering has made significant contributions toward developing new therapeutic strategies for the treatment of MS defects and relevant disease. Among various biomaterials used for tissue engineering, natural polymers offer superior properties that promote optimal cell interaction and desired biological function. Natural polymers have similarity with the native ECM, including enzymatic degradation, bio-resorb and non-toxic degradation products, ability to conjugate with various agents, and high chemical versatility, biocompatibility, and bioactivity that promote optimal cell interaction and desired biological functions. This review summarizes recent advances in applying natural-based scaffolds for musculoskeletal tissue engineering.
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Affiliation(s)
- Jingzhi Fan
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Pulka St 3, LV-1007 Riga, Latvia;
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Pulka St 3, LV-1007 Riga, Latvia
| | - Keyvan Abedi-Dorcheh
- Biomedical Engineering Division, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14117-13116, Iran; (K.A.-D.); (A.S.V.); (F.K.-A.); (S.R.); (M.S.); (M.G.); (F.R.A.); (Z.G.)
| | - Asma Sadat Vaziri
- Biomedical Engineering Division, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14117-13116, Iran; (K.A.-D.); (A.S.V.); (F.K.-A.); (S.R.); (M.S.); (M.G.); (F.R.A.); (Z.G.)
| | - Fereshteh Kazemi-Aghdam
- Biomedical Engineering Division, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14117-13116, Iran; (K.A.-D.); (A.S.V.); (F.K.-A.); (S.R.); (M.S.); (M.G.); (F.R.A.); (Z.G.)
| | - Saeed Rafieyan
- Biomedical Engineering Division, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14117-13116, Iran; (K.A.-D.); (A.S.V.); (F.K.-A.); (S.R.); (M.S.); (M.G.); (F.R.A.); (Z.G.)
| | - Masoume Sohrabinejad
- Biomedical Engineering Division, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14117-13116, Iran; (K.A.-D.); (A.S.V.); (F.K.-A.); (S.R.); (M.S.); (M.G.); (F.R.A.); (Z.G.)
| | - Mina Ghorbani
- Biomedical Engineering Division, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14117-13116, Iran; (K.A.-D.); (A.S.V.); (F.K.-A.); (S.R.); (M.S.); (M.G.); (F.R.A.); (Z.G.)
| | - Fatemeh Rastegar Adib
- Biomedical Engineering Division, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14117-13116, Iran; (K.A.-D.); (A.S.V.); (F.K.-A.); (S.R.); (M.S.); (M.G.); (F.R.A.); (Z.G.)
| | - Zahra Ghasemi
- Biomedical Engineering Division, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14117-13116, Iran; (K.A.-D.); (A.S.V.); (F.K.-A.); (S.R.); (M.S.); (M.G.); (F.R.A.); (Z.G.)
| | - Kristaps Klavins
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Pulka St 3, LV-1007 Riga, Latvia;
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Pulka St 3, LV-1007 Riga, Latvia
- Correspondence: (K.K.); (V.J.)
| | - Vahid Jahed
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Pulka St 3, LV-1007 Riga, Latvia;
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Pulka St 3, LV-1007 Riga, Latvia
- Correspondence: (K.K.); (V.J.)
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Camilleri J, Atmeh A, Li X, Meschi N. Present status and future directions: Hydraulic materials for endodontic use. Int Endod J 2022; 55 Suppl 3:710-777. [PMID: 35167119 PMCID: PMC9314068 DOI: 10.1111/iej.13709] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/11/2022] [Accepted: 02/13/2022] [Indexed: 01/07/2023]
Abstract
BACKGROUND Hydraulic materials are used in Endodontics due to their hydration characteristics namely the formation of calcium hydroxide when mixing with water and also because of their hydraulic properties. These materials are presented in various consistencies and delivery methods. They are composed primarily of tricalcium and dicalcium silicate, and also include a radiopacifier, additives and an aqueous or a non-aqueous vehicle. Only materials whose primary reaction is with water can be classified as hydraulic. OBJECTIVES Review of the classification of hydraulic materials by Camilleri and the literature pertaining to specific uses of hydraulic cements in endodontics namely intra-coronal, intra-radicular and extra-radicular. Review of the literature on the material properties linked to specific uses providing the current status of these materials after which future trends and gaps in knowledge could be identified. METHODS The literature was reviewed using PUBMED, and for each clinical use, the in vitro properties such as physical, chemical, biological and antimicrobial characteristics and clinical data were extracted and evaluated. RESULTS A large number of publications were retrieved for each clinical use and these were grouped depending on the property type being investigated. CONCLUSIONS The hydraulic cements have made a difference in clinical outcomes. The main shortcoming is the poor testing methodologies employed which provide very limited information and also inhibits adequate clinical translation. Furthermore, the clinical protocols need to be updated to enable the materials to be employed effectively.
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Affiliation(s)
- Josette Camilleri
- School of DentistryCollege of Medical and Dental SciencesUniversity of BirminghamBirminghamUK
| | - Amre Atmeh
- Hamdan Bin Mohammed College of Dental Medicine (HBMCDM)Mohammed Bin Rashid University of Medicine and Health Sciences (MBRU)DubaiUnited Arab Emirates
| | - Xin Li
- Department of Oral Health SciencesBIOMAT – Biomaterials Research GroupKU Leuven and DentistryUniversity Hospitals LeuvenLeuvenBelgium
| | - Nastaran Meschi
- Department of Oral Health SciencesBIOMAT – Biomaterials Research GroupKU Leuven and DentistryUniversity Hospitals LeuvenLeuvenBelgium
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9
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de Melo CCDSB, Cassiano FB, Bronze-Uhle ÉS, Stuani VDT, Bordini EAF, Gallinari MDO, de Souza Costa CA, Soares DG. Mineral-induced bubbling effect and biomineralization as strategies to create highly porous and bioactive scaffolds for dentin tissue engineering. J Biomed Mater Res B Appl Biomater 2022; 110:1757-1770. [PMID: 35138034 DOI: 10.1002/jbm.b.35032] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 01/16/2022] [Accepted: 01/29/2022] [Indexed: 12/15/2022]
Abstract
The objective of the study was to assess the biological and mechanical characteristics of chitosan-based scaffolds enriched by mineral phases and biomineralized in simulated body fluid (SBF) as a possible biomaterial for dentin regeneration. Thus, porous chitosan scaffolds were prepared by the mineral-induced bubbling-effect technique and subjected to biomineralization to create biomimetic scaffolds for dentin tissue engineering. Suspensions containing calcium hydroxide, nanohydroxyapatite, or β-tricalcium phosphate were added to the chitosan (CH) solution and subjected to gradual freezing and freeze-drying to obtain CHCa, CHnHA, and CHβTCP porous scaffolds, respectively, by the bubbling effect. Then, scaffolds were incubated in SBF for 5 days at 37°C, under constant stirring, to promote calcium-phosphate (CaP) biomineralization. Scanning electron microscopy revealed increased pore size and porosity degree on mineral-containing scaffolds, with CHCa and CHnHA presenting as round, well-distributed, and with an interconnected pore network. Nevertheless, incubation in SBF disrupted the porous architecture, except for CHCaSBF , leading to the deposition of CaP coverage, confirmed by Fourier Transform Infrared Spectroscopy analyses. All mineral-containing and SBF-treated formulations presented controlled degradation profiles and released calcium throughout 28 days. When human dental pulp cells (HDPCs) were seeded onto scaffold structures, the porous and interconnected architecture of CHCa, CHnHA, and CHCaSBF allowed cells to infiltrate and spread throughout the scaffold structure, whereas in other formulations cells were dispersed or agglomerated. It was possible to determine a positive effect on cell proliferation and odontogenic differentiation for mineral-containing formulations, intensely improved by biomineralization. A significant increase in mineralized matrix deposition (by 8.4 to 18.9 times) was observed for CHCaSBF , CHnHASBF , and CHβTCPSBF in comparison with plain CH. The bioactive effect on odontoblastic marker expression (ALP activity and mineralized matrix) was also observed for HDPCs continuously cultivated with conditioned medium obtained from scaffolds. Therefore, biomineralization of chitosan scaffolds containing different mineral phases was responsible for increasing the capacity for mineralized matrix deposition by pulpal cells, with potential for use in dentin tissue engineering.
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Affiliation(s)
- Camila Correa da Silva Braga de Melo
- Department of Operative Dentistry, Endodontics and Dental Materials, Sao Paulo University-USP, Bauru School of Dentistry, Bauru, Sao Paulo, Brazil
| | - Fernanda Balestrero Cassiano
- Department of Operative Dentistry, Endodontics and Dental Materials, Sao Paulo University-USP, Bauru School of Dentistry, Bauru, Sao Paulo, Brazil
| | - Érika Soares Bronze-Uhle
- Department of Operative Dentistry, Endodontics and Dental Materials, Sao Paulo University-USP, Bauru School of Dentistry, Bauru, Sao Paulo, Brazil
| | - Vitor de Toledo Stuani
- Department of Operative Dentistry, Endodontics and Dental Materials, Sao Paulo University-USP, Bauru School of Dentistry, Bauru, Sao Paulo, Brazil
| | - Ester Alves Ferreira Bordini
- Department of Operative Dentistry, Endodontics and Dental Materials, Sao Paulo University-USP, Bauru School of Dentistry, Bauru, Sao Paulo, Brazil
| | - Marjorie de Oliveira Gallinari
- Department of Physiology and Pathology, Univ. Estadual Paulista-UNESP, Araraquara School of Dentistry, Araraquara, Sao Paulo, Brazil
| | - Carlos Alberto de Souza Costa
- Department of Physiology and Pathology, Univ. Estadual Paulista-UNESP, Araraquara School of Dentistry, Araraquara, Sao Paulo, Brazil
| | - Diana Gabriela Soares
- Department of Operative Dentistry, Endodontics and Dental Materials, Sao Paulo University-USP, Bauru School of Dentistry, Bauru, Sao Paulo, Brazil
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Nano-β-tricalcium phosphate incorporated root dentin adhesive in the bonding interface of yttria-stabilized tetragonal zirconia polycrystalline post. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-022-02355-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Porous Biphasic Calcium Phosphate Granules from Oyster Shell Promote the Differentiation of Induced Pluripotent Stem Cells. Int J Mol Sci 2021; 22:ijms22179444. [PMID: 34502354 PMCID: PMC8430496 DOI: 10.3390/ijms22179444] [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] [Received: 08/09/2021] [Revised: 08/20/2021] [Accepted: 08/30/2021] [Indexed: 01/02/2023] Open
Abstract
Oyster shells are rich in calcium, and thus, the potential use of waste shells is in the production of calcium phosphate (CaP) minerals for osteopathic biomedical applications, such as scaffolds for bone regeneration. Implanted scaffolds should stimulate the differentiation of induced pluripotent stem cells (iPSCs) into osteoblasts. In this study, oyster shells were used to produce nano-grade hydroxyapatite (HA) powder by the liquid-phase precipitation. Then, biphasic CaP (BCP) bioceramics with two different phase ratios were obtained by the foaming of HA nanopowders and sintering by two different two-stage heat treatment processes. The different sintering conditions yielded differences in structure and morphology of the BCPs, as determined by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Brunauer–Emmett–Teller (BET) surface area analysis. We then set out to determine which of these materials were most biocompatible, by co-culturing with iPSCs and examining the gene expression in molecular pathways involved in self-renewal and differentiation of iPSCs. We found that sintering for a shorter time at higher temperatures gave higher expression levels of markers for proliferation and (early) differentiation of the osteoblast. The differences in biocompatibility may be related to a more hierarchical pore structure (micropores within macropores) obtained with briefer, high-temperature sintering.
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Application of β-Tricalcium Phosphate in Adhesive Dentin Bonding. Polymers (Basel) 2021; 13:polym13172855. [PMID: 34502894 PMCID: PMC8434446 DOI: 10.3390/polym13172855] [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] [Received: 07/24/2021] [Revised: 08/10/2021] [Accepted: 08/12/2021] [Indexed: 12/21/2022] Open
Abstract
The study aimed at synthesizing β-tricalcium phosphate (β-TCP) nanoparticles and comparing the mechanical properties and dentin interaction of two adhesives: experimental adhesive (EA) and EA with 5 wt.% β-TCP nanoparticles (β-TCP-5%). These filler nanoparticles were synthesized and then characterized with scanning electron microscopy (SEM) and micro-Raman spectroscopy. The β-TCP nanoparticles were incorporated in the adhesives to form two groups: gp-1: EA (control) and gp-2: β-TCP-5%. These adhesives were characterized by SEM, energy-dispersive X-ray (EDX) spectroscopy and were also assessed for their micro-tensile bond strength (μTBS) with (TC) and without thermocycling (NTC). Fourier Transform Infrared (FTIR) spectroscopy was performed to evaluate the degree of conversion (DC) of two adhesives. The β-TCP filler was seen as irregularly shaped agglomerates on SEM. The micro-Raman spectra revealed characteristic peaks associated with β-TCP nanoparticles. Both adhesives presented suitable dentin interaction, which was demonstrated by the formation of resin tags of variable depths. The EDX analysis verified the existence of calcium (Ca) and phosphate (P) for the β-TCP-5% group. The greatest μTBS values were shown by β-TCP-5% group samples when they were non-thermocycled (NTC) (β-TCP-5%-NTC: 34.11 ± 3.46) followed by the thermocycled (TC) samples of the same group (β-TCP-5%-TC: 30.38 ± 3.66), compared with the EA group. Although the DC presented by β-TCP-5% group was comparable to the EA group, it was still lower. The addition of β-TCP nanoparticles in the adhesive improved its μTBS and resulted in a suitable dentin interaction, seen in the form of hybrid layer and resin tag formation. Nonetheless, a decreased DC was observed for the β-TCP-5% adhesive. Future studies probing the effect of different filler concentrations on various properties of the adhesive are warranted.
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