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Shehab NF, Hasan NH, Ismail HK. Investigating the Effect of Selenium Nanoparticles on Mineral Trioxide Aggregates as a Promising Novel Dental Material. J Int Soc Prev Community Dent 2024; 14:16-27. [PMID: 38559637 PMCID: PMC10980305 DOI: 10.4103/jispcd.jispcd_148_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/06/2023] [Accepted: 12/01/2023] [Indexed: 04/04/2024] Open
Abstract
Aim To enhance mineral trioxide aggregate high plasticity (MTA HP), a commonly used dental calcium silicate cement, by incorporating selenium nanoparticles (SeNPs) known for their antioxidant and anti-inflammatory properties. The objectives included investigating the impact of SeNPs on the setting time and chemical properties of MTA HP. Materials and Methods We performed a comprehensive study to formulate and profile SeNPs integrated into MTA HP. Diverse concentrations of SeNPs were introduced into MTA HP, and the commencement and culmination of the setting process were gauged employing a Gillmore needle cabinet. The chemical composition was validated using Fourier transform infrared spectroscopy with attenuated total reflectance and X-ray diffraction analysis. Results The incorporation of SeNPs led to remarkable improvements. Notably, SeNPs positively affected the setting time of MTA HP, with faster setting times corresponding to higher SeNPs concentrations. Chemical analyses confirmed the successful integration of SeNPs with MTA HP. These enhancements make the material may be suitable for dental applications, especially due to its accelerated setting time. Conclusions MTA HP incorporated with SeNPs represents a significant advancement in dental materials. Its faster setting time, combined with the antioxidant and anti-inflammatory properties of selenium, provides dental professionals with an efficient and time-saving option for complex treatments. This novel nanomaterial holds promise for improving dental procedures and patient outcomes.
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Affiliation(s)
- Njwan F Shehab
- Department of Conservative Dentistry, College of Dentistry, University of Mosul, Mosul, Iraq
| | - Nadia H Hasan
- Department of Conservative Dentistry, College of Dentistry, University of Mosul, Mosul, Iraq
| | - Hana K Ismail
- Department of Pathology and Poultry Disease, College of Veterinary Medicine, University of Mosul, Mosul, Iraq
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2
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Sadreddini S, Jodati H, Evis Z, Keskin D. Novel barium-doped-baghdadite incorporated PHBV-PCL composite fibrous scaffolds for bone tissue engineering. J Mech Behav Biomed Mater 2023; 148:106185. [PMID: 37837873 DOI: 10.1016/j.jmbbm.2023.106185] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/07/2023] [Accepted: 10/10/2023] [Indexed: 10/16/2023]
Abstract
Bioceramic/polymer composites have dragged a lot of attention for treating hard tissue damage in recent years. In this study, we synthesized barium-doped baghdadite (Ba-BAG), as a novel bioceramic, and later developed fibrous composite poly (hydroxybutyrate) co (hydroxyvalerate)- polycaprolactone (PHBV-PCL) scaffolds containing different amounts of baghdadite (BAG) and Ba-BAG, intended to be used in bone regeneration. Our results demonstrated that BAG and Ba-doped BAG powders were synthesized successfully using the sol-gel method and their microstructural, physicochemical, and cytotoxical properties results were evaluated. In the following, PHBV/PCL composite scaffolds containing different amounts of BAG and Ba-BAG (1, 3, and 5 wt%) were produced by the wet electrospinning method. The porosity of scaffolds decreased from 78% to 72% in Ba-BAG-incorporated PHBV/PCL scaffolds. The compressive strength of the scaffolds was between 4.69 and 9.28 kPa, which was increased to their maximum values in the scaffolds with Ba-BAG. The presence of BAG and Ba-BAG in the polymer scaffolds resulted in increasing bioactivity, and it was introduced as a suitable way to control the degradation rate of scaffolds. The presence of the BAG component was a major reason for higher cell proliferation in reinforced PHBV/PCL polymeric scaffolds, while Ba existence played its influential role in the higher osteogenic activity of cells on Ba-BAG incorporated PHBV/PCL scaffolds. Thus, the incorporation of Ba-BAG bioceramic materials into the structure of polymeric PHBV/PCL scaffolds promoted their various properties, and allow these scaffolds to be used as promising candidates in bone tissue engineering applications.
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Affiliation(s)
- Sanaossadat Sadreddini
- Department of Biomedical Engineering, Middle East Technical University, Ankara, 06800, Turkey
| | - Hossein Jodati
- Department of Biomedical Engineering, Middle East Technical University, Ankara, 06800, Turkey
| | - Zafer Evis
- Department of Biomedical Engineering, Middle East Technical University, Ankara, 06800, Turkey; Department of Engineering Sciences, Middle East Technical University, Ankara, 06800, Turkey.
| | - Dilek Keskin
- Department of Biomedical Engineering, Middle East Technical University, Ankara, 06800, Turkey; Department of Engineering Sciences, Middle East Technical University, Ankara, 06800, Turkey
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3
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Abu Zeid ST, Alnoury A. Characterisation of the Bioactivity and the Solubility of a New Root Canal Sealer. Int Dent J 2023; 73:760-769. [PMID: 37244780 PMCID: PMC10509446 DOI: 10.1016/j.identj.2023.04.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/09/2023] [Accepted: 04/11/2023] [Indexed: 05/29/2023] Open
Abstract
OBJECTIVES This study aimed to analyse the effect of using phosphate buffer solution (PBS) on the solubility, pH changes, surface structure, and elemental composition of a new bioceramic Cerafill sealer compared with Endosequence sealer and AH26 resin-based sealer. METHODS A fresh mixture of each sealer moistened with either deionised water or PBS was subjected to a setting time test. Set discs (n = 10) were submerged in either deionised water or PBS to evaluate pH changes and solubility at 1, 7, 14, 21, and 28 days. Surface characterisation of the sealers was done before and after solubility tests using scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), and Fourier transform infrared (FTIR) spectroscopy analyses. RESULTS An analysis of variance revealed a significant delay in setting of BC-Endosequence (P < .001) with no significant difference when each sealer was moistened with deionised water or PBS (P > .05). Both bioceramic sealers exhibited highly alkaline pH (range, 9.47-10.72). When the sealer was submerged in deionised water, Endosequence exhibited significantly greater solubility, whilst Cerafill and AH26 gained weight. When the sealers were submerged in PBS, both bioceramic sealers gained more weight, with significantly greater values for Endosequence (P < .001). Hydroxyapatite formation was revealed by SEM/EDX and FTIR. CONCLUSIONS PBS promoted the formation of hydroxyapatite crystals that protect the bioceramic sealers from dissolving.
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Affiliation(s)
- Sawsan T Abu Zeid
- Endodontic Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia; Endodontic Department, Faculty of Dentistry, Cairo University, Giza, Egypt.
| | - Arwa Alnoury
- Restorative Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
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4
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Maneesai K, Khammahong S, Siripoom P, Phrompet C, Sriwong C, Maensiri S, Ruttanapun C. Fabrication and thermoelectric conversion of thermoelectric concrete brick with buried unileg N-type CaMnO 3 thermoelectric module inside. Sci Rep 2023; 13:916. [PMID: 36650195 PMCID: PMC9845234 DOI: 10.1038/s41598-023-28080-7] [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: 12/11/2021] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
To investigate the effect of heat loss reduction due to thermal insulator and thermal interface resistance due to multi-layer structure in order to improve the efficiency of a thermoelectric device, a thermoelectric concrete brick was fabricated using a unileg n-type CaMnO3 thermoelectric module inside. CaMnO3 thermoelectric materials were synthesized by starting materials CaCO3 and MnO2 to produce a unileg n-type CaMnO3 module. Thermoelectric concrete brick consisted of two types: I-layer brick (one layer of concrete thermal insulator) and III-layer brick (three layers of different concrete insulators). The occurring temperature difference, electric current and voltage on the CaMnO3 module and thermoelectric concrete brick were measured in closed and open circuits. The temperature difference, thermal distribution, and output voltage when applying constant temperatures of 100, 200 and 400 °C were measured. Computer simulations of the Finite Element Method (FEM) were performed to compare with the experimental results. The trends of the temperature difference and the output voltage from the experimental and computer simulations were in good agreement. The results of the temperature difference during the hotter side temperature of 200 °C exhibited the temperature difference along the vertical direction of the thermoelectric concrete bricks for both types of the III-layer brick of 172 °C and the I-layer brick of 132 °C are larger than that of the CaMnO3 TEG module without using a thermal concrete insulator of 108 °C. The thermoelectric concrete bricks of the III-layer brick type of 27.70 mV displayed output voltage results being higher than those of the I-layer brick of 26.57 mV and the CaMnO3 TEG module without using a thermal concrete insulator of 24.35 mV. Thermoelectric concrete brick of the III-layer brick type displayed higher electric generation power than the I-layer brick and the CaMnO3 TEG module. Additionally, the results exhibited the capability of thermoelectric concrete brick in the III-layer brick model for electric generation power based on the temperature difference. The TEG concrete brick of I-layer concrete covering the series-parallel combination circuit of 120 modules of the unileg n-type CaMnO3 was constructed and then embedded on the outer surface of the furnace. During the maximum hotter side temperature of 580 °C of the concrete brick, the temperature difference between the hotter side and the cooler side of the brick occurred at 365 °C and the maximum output voltage was obtained at 581.7 mV.
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Affiliation(s)
- Keerati Maneesai
- grid.419784.70000 0001 0816 7508Department of Physics, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand ,grid.419784.70000 0001 0816 7508Smart Materials Research and Innovation Unit, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand ,grid.419784.70000 0001 0816 7508Center of Excellence in Smart Materials Research and Innovation, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand ,grid.450348.eThailand Center of Excellence in Physics, Ministry of Higher Education, Science, Research and Innovation, 328 Si Ayutthaya Road, Bangkok, 10400 Thailand
| | - Sunisar Khammahong
- grid.419784.70000 0001 0816 7508Department of Physics, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand ,grid.419784.70000 0001 0816 7508Smart Materials Research and Innovation Unit, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand ,grid.419784.70000 0001 0816 7508Center of Excellence in Smart Materials Research and Innovation, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand ,grid.450348.eThailand Center of Excellence in Physics, Ministry of Higher Education, Science, Research and Innovation, 328 Si Ayutthaya Road, Bangkok, 10400 Thailand
| | - Pongsakorn Siripoom
- grid.419784.70000 0001 0816 7508Department of Physics, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand ,grid.419784.70000 0001 0816 7508Smart Materials Research and Innovation Unit, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand
| | - Chaiwat Phrompet
- grid.419784.70000 0001 0816 7508Smart Materials Research and Innovation Unit, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand ,grid.419784.70000 0001 0816 7508Center of Excellence in Smart Materials Research and Innovation, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand ,grid.450348.eThailand Center of Excellence in Physics, Ministry of Higher Education, Science, Research and Innovation, 328 Si Ayutthaya Road, Bangkok, 10400 Thailand ,grid.419784.70000 0001 0816 7508College of Innovation and Industrial Management, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand
| | - Chaval Sriwong
- grid.419784.70000 0001 0816 7508Smart Materials Research and Innovation Unit, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand ,grid.419784.70000 0001 0816 7508Center of Excellence in Smart Materials Research and Innovation, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand ,grid.450348.eThailand Center of Excellence in Physics, Ministry of Higher Education, Science, Research and Innovation, 328 Si Ayutthaya Road, Bangkok, 10400 Thailand ,grid.419784.70000 0001 0816 7508Department of Chemistry, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand
| | - Santi Maensiri
- grid.6357.70000 0001 0739 3220School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000 Thailand
| | - Chesta Ruttanapun
- grid.419784.70000 0001 0816 7508Department of Physics, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand ,grid.419784.70000 0001 0816 7508Smart Materials Research and Innovation Unit, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand ,grid.419784.70000 0001 0816 7508Center of Excellence in Smart Materials Research and Innovation, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520 Thailand ,grid.450348.eThailand Center of Excellence in Physics, Ministry of Higher Education, Science, Research and Innovation, 328 Si Ayutthaya Road, Bangkok, 10400 Thailand
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Yoo KH, Kim YI, Yoon SY. Physicochemical and Biological Properties of Mg-Doped Calcium Silicate Endodontic Cement. MATERIALS (BASEL, SWITZERLAND) 2021; 14:1843. [PMID: 33917786 PMCID: PMC8068188 DOI: 10.3390/ma14081843] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/01/2021] [Accepted: 04/01/2021] [Indexed: 12/31/2022]
Abstract
Calcium silicate-based cement has been widely used for endodontic repair. However, it has a long setting time and needs to shorten setting time. This study investigated the effects of magnesium (Mg) ion on the setting reaction, mechanical properties, and biological properties of calcium silicate cement (CSC). Sol-gel route was used to synthesize Mg ion-doped calcium silicate cement. Synthesized cement was formulated with the addition of different contents of Mg ion, according to 0, 1, 3, 5 mol% of Mg ion-doped calcium silicate. The synthesized cements were characterized with X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). We also evaluated the physicochemical and biological properties of cement, such as the setting time, compressive strength, micro-hardness, simulated body fluid (SBF) immersion, cytotoxicity, and cell differentiation tests. As a result, the Mg ion improves the hydration properties of calcium silicate cement, and the setting time is reduced by increasing the amounts of Mg ion. However, the mechanical properties deteriorated with increasing Mg ion, and 1 and 3 mol% Mg-doped calcium silicate had appropriate mechanical properties. Also, the results of biological properties such as cytotoxicity, ALP activity, and ARS staining improved with Mg ion. Consequently, the optimal condition is 3 mol% of Mg ion-doped calcium silicate (3%Mg-CSC).
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Affiliation(s)
- Kyung-Hyeon Yoo
- School of Materials Science and Engineering, Pusan National University, Busan 46241, Korea;
| | - Yong-Il Kim
- Department of Orthodontics, Dental Research Institute, Pusan National University, Yangsan 50612, Korea
| | - Seog-Young Yoon
- School of Materials Science and Engineering, Pusan National University, Busan 46241, Korea;
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6
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Atmeh AR. Investigating the effect of bicarbonate ion on the structure and strength of calcium silicate-based dental restorative material—Biodentine. Clin Oral Investig 2020; 24:4597-4606. [DOI: 10.1007/s00784-020-03328-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 05/05/2020] [Indexed: 11/28/2022]
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7
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Bui Viet D, Chan WP, Phua ZH, Ebrahimi A, Abbas A, Lisak G. The use of fly ashes from waste-to-energy processes as mineral CO 2 sequesters and supplementary cementitious materials. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122906. [PMID: 32497860 DOI: 10.1016/j.jhazmat.2020.122906] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/26/2020] [Accepted: 05/03/2020] [Indexed: 06/11/2023]
Abstract
This study explores the simultaneous application of fly ash (FA) generated from the thermal treatment of municipal solid waste as a CO2 sequester through aqueous mineral carbonation and as a supplementary cementitious material (SCM) for the development of green construction materials. Two types of FAs are tested, namely an incineration fly ash (IFA) collected from electrostatic precipitator of an incineration plant and a gasification fly ash (GFA) collected from air pollution control unit of a high temperature slagging gasification waste-to-energy (WTE) plant. Ground waste glass (GWG) is used as a tertiary SCM. GFA demonstrates favorable sequestration capacity (87.5 mg/g) and high carbonation degree (74.1 %) while the IFA is found to be inactive during carbonation (3.1 mg/g, 4.6 %). Mortars blended with the wastes have shown delay in the cement hydration but eventually achieve compressive strength comparable to the control specimen. The mixing of GWG and GFA synergistically improves the performance of mortars which highlights the importance of strategic coupling of different waste streams. Most of the hazardous heavy metals, chloride and sulfate in FAs were stabilized in the mortars suggesting the potential for safe re-utilization of carbonated FAs as sustainable SCMs to concurrently close the waste loop and combat climate change.
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Affiliation(s)
- Dominic Bui Viet
- School of Chemical and Biomolecular Engineering, The University of Sydney, NSW 2006, Australia
| | - Wei-Ping Chan
- Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Clean Tech One, 637141, Singapore
| | - Zheng-Hui Phua
- Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Clean Tech One, 637141, Singapore
| | - Amirali Ebrahimi
- School of Chemical and Biomolecular Engineering, The University of Sydney, NSW 2006, Australia
| | - Ali Abbas
- School of Chemical and Biomolecular Engineering, The University of Sydney, NSW 2006, Australia.
| | - Grzegorz Lisak
- Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Clean Tech One, 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
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8
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Zhang Y, Luan J, Zhang Y, Sha S, Li S, Xu S, Xu D. Preparation and Characterization of Iron-Doped Tricalcium Silicate-Based Bone Cement as a Bone Repair Material. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3670. [PMID: 32825175 PMCID: PMC7504278 DOI: 10.3390/ma13173670] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 08/10/2020] [Accepted: 08/17/2020] [Indexed: 02/07/2023]
Abstract
Iron is one of the trace elements required by human body, and its deficiency can lead to abnormal bone metabolism. In this study, the effect of iron ions on the properties of tricalcium silicate bone cement (Fe/C3Ss) was investigated. It effectively solved the problems of high pH value and low biological activity of calcium silicate bone cement. The mechanical properties, in vitro mineralization ability and biocompatibility of the materials were systematically characterized. The results indicate that tricalcium silicate bone cement containing 5 mol% iron displayed good self-setting ability, mechanical properties and biodegradation performance in vitro. Compared with pure calcium silicate bone cement (C3Ss), Fe/C3Ss showed lower pH value (8.80) and higher porosity (45%), which was suitable for subsequent cell growth. Immersion test in vitro also confirmed its good ability to induce hydroxyapatite formation. Furthermore, cell culture experiments performed with Fe/C3Ss ion extracts clearly stated that the material had excellent cell proliferation abilities compared to C3Ss and low toxicity. The findings reveal that iron-doped tricalcium silicate bone cement is a promising bioactive material in bone repair applications.
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Affiliation(s)
- Yanan Zhang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China; (Y.Z.); (J.L.); (S.S.); (S.L.); (S.X.); (D.X.)
| | - Jiapan Luan
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China; (Y.Z.); (J.L.); (S.S.); (S.L.); (S.X.); (D.X.)
| | - Yin Zhang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China; (Y.Z.); (J.L.); (S.S.); (S.L.); (S.X.); (D.X.)
- Nanjing Haoqi Advanced Materials Co., Ltd., Nanjing 211300, China
| | - Shuai Sha
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China; (Y.Z.); (J.L.); (S.S.); (S.L.); (S.X.); (D.X.)
| | - Sha Li
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China; (Y.Z.); (J.L.); (S.S.); (S.L.); (S.X.); (D.X.)
| | - Shanqi Xu
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China; (Y.Z.); (J.L.); (S.S.); (S.L.); (S.X.); (D.X.)
| | - Dongqing Xu
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China; (Y.Z.); (J.L.); (S.S.); (S.L.); (S.X.); (D.X.)
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Huang CS, Hsieh SC, Teng NC, Lee WF, Negi P, Belem WF, Wu HC, Yang JC. A Silk Fibroin Based Hydration Accelerator for Root Canal Filling Materials. Polymers (Basel) 2020; 12:E994. [PMID: 32344691 PMCID: PMC7240371 DOI: 10.3390/polym12040994] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 04/17/2020] [Accepted: 04/22/2020] [Indexed: 12/14/2022] Open
Abstract
Mineral trioxide aggregate (MTA) is widely used in various dental endodontic applications such as root-end filling, furcal perforation repair, and vital pulp therapy. In spite of many attempts to improve handling properties and reduce the discoloration of MTA, the ideal root canal filling material has yet to be fully developed. The objective of this study was to investigate the setting time, mechanical properties, and biocompatibility of MTA set by a silk fibroin solution. A 5 wt% silk fibroin (SF) solution (a novel hydration accelerant) was used to set SavDen® MTA and ProRoot® white MTA (WMTA). Changes in setting time, diametral tensile strength (DTS), material crystallization, in vitro cell viability, and cell morphology were assessed by Vicat needle measurement, a universal testing machine, scanning electron microscopy (SEM), and WST-1 assay, respectively. The initial setting time of ProRoot® MTA and SavDen® MTA experienced a drastic decrease of 83.9% and 42.1% when deionized water was replaced by 5 wt% SF solution as the liquid phase. The DTS of SavDen® MTA showed a significant increase after set by the SF solution in 24 h. A human osteoblast-like cell (MG-63)-based WST-1 assay revealed that both ProRoot® MTA and SavDen® MTA hydrated using SF solution did not significantly differ (p > 0.05) in cell viability. MG-63 cells with pseudopodia attachments and nuclear protrusions represent a healthier and more adherent status on the surface of MTA when set with SF solution. The results suggest that the 5 wt% SF solution may be used as an alternative hydration accelerant for MTA in endodontic applications.
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Affiliation(s)
- Ching-Shuan Huang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110-31, Taiwan; (C.-S.H.); (S.-C.H.); (N.-C.T.)
| | - Sung-Chih Hsieh
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110-31, Taiwan; (C.-S.H.); (S.-C.H.); (N.-C.T.)
- Department of Dentistry, Taipei Municipal Wan-Fang Hospital, Taipei 116-96, Taiwan
| | - Nai-Chia Teng
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110-31, Taiwan; (C.-S.H.); (S.-C.H.); (N.-C.T.)
- Department of Dentistry, Taipei Medical University Hospital, Taipei 110-31, Taiwan
| | - Wei-Fang Lee
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan;
| | - Poonam Negi
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology and Management Sciences, Solan 173 212, India;
| | - Wendimi Fatimata Belem
- International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 110-31, Taiwan;
| | - Hsuan-Chen Wu
- Department of Biochemical Science and Technology, National Taiwan University, Taipei 106, Taiwan;
| | - Jen-Chang Yang
- International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 110-31, Taiwan;
- Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 110-31, Taiwan
- Research Center of Biomedical Device, Taipei Medical University, Taipei 110-52, Taiwan
- Research Center of Digital Oral Science and Technology, Taipei Medical University, Taipei 110-52, Taiwan
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Ghaffari S, Solati-Hashjin M, Zabihi-Neyshabouri E, Rabiee SM. Novel calcium phosphate coated calcium silicate-based cement: in vitro evaluation. ACTA ACUST UNITED AC 2020; 15:035008. [PMID: 31935700 DOI: 10.1088/1748-605x/ab6b30] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Calcium silicate-based cements are known for their wide applications in dentistry and orthopedics. The alkaline pH (up to 12) of these cements limits their application in other orthopedic areas. In this study, the effect of dicalcium phosphate dihydrate (DCPD) coating on set cement on pH reduction and biocompatibility improvement was examined. Samples with 0 and 10 weight ratio DCPD were prepared and characterized by XRD, FTIR, and SEM. The DCPD coating on the set cement was performed by a 7 d immersion in 1% monocalcium phosphate (MCP) solution and characterized by XRD, FTIR, SEM, and EDX. Also, the compressive strength and cytotoxicity of the samples were tested. The results showed that DCPD coating did not significantly change the compressive strength of the cement, but by decreasing the pH of the culture medium to the physiological range, it led to enhance adhesion, spreading and proliferation of human osteosarcoma cell line (Saos-2). The novel DCPD coated calcium silicate-based cement could be served as a bulk or porous bone substitute and scaffold.
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Affiliation(s)
- Somayeh Ghaffari
- Biomedical Engineering Department, Amirkabir University of Technology, Tehran, Iran
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Jiménez-Sánchez MDC, Segura-Egea JJ, Díaz-Cuenca A. Physicochemical parameters - hydration performance relationship of the new endodontic cement MTA Repair HP. J Clin Exp Dent 2019; 11:e739-e744. [PMID: 31598203 PMCID: PMC6776399 DOI: 10.4317/jced.56013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Accepted: 07/04/2019] [Indexed: 12/18/2022] Open
Abstract
Background To characterize the chemical composition and textural parameters of the MTA Repair HP precursor powder and their influence to hydration performance. Material and Methods Un-hydrated precursor material was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray fluorescence (XRF), laser diffraction (LD), N2 physisorption and field emission gun scanning electron microscopy (FEG-SEM). Setting time was assessed according to ASTM specification C 266. Hydrated material was analysed by XRD, FT-IR, energy dispersive X-ray (EDX) analysis and FEG-SEM. Results Ca3SiO5 and Ca2SiO4, in addition to CaWO4 as radiopacifier are the main compositional phases. Other measured parameter indicates high specific surface area of 4.8 m2 g-1, high aluminium content of 1.7 wt.% and low initial and final setting times of 12 and 199 min, respectively. Singular microstructural features consisting of high aspect ratio nanoparticles are main constituents of un-hydrated precursor. Besides, FEM-SEM observation shows notably growth of hexagonal shaped plate-like morphologies homogeneously distributed along the sample during hydration process. Conclusions The short setting time measured for HP Repair, is correlated with high surface area of precursor powder, high Al content and the absence of compositional sulphate phases. Key words:Bioactive endodontic cements, hydration performance, MTA HP Repair, physicochemical parameters.
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Affiliation(s)
- María Del Carmen Jiménez-Sánchez
- Department of Stomatology, Faculty of Dentistry, University of Sevilla, Sevilla, Spain.,Materials Science Institute of Sevilla (ICMS), Joint CSIC-University of Sevilla Center, Sevilla, Spain
| | - Juan-José Segura-Egea
- Department of Stomatology, Faculty of Dentistry, University of Sevilla, Sevilla, Spain
| | - Aránzazu Díaz-Cuenca
- Materials Science Institute of Sevilla (ICMS), Joint CSIC-University of Sevilla Center, Sevilla, Spain.,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
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12
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Separation of Cenospheres from Lignite Fly Ash Using Acetone–Water Mixture. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9183792] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This work reports on the separation of cenospheres from lignite fly ash through a wet separation process-the sink-float method. A better quality of cenospheres could be achieved through a physical–chemical approach using an acetone–water mixture as a medium. This work aimed to elucidate the correlation between the structure, morphology, and composition and medium fraction variables, with data for the freshly prepared and the reused mixtures presented for comparison. The work covers a study of the macrocomponent composition of an Fe2O3–SiO2–Al2O3 system, highlighting the pair dependences of SiO2–Al2O3, Al2O3–Fe2O3, and SiO2/Al2O3–Al2O3 and revealing an interesting result in terms of geochemical characteristics categorizing the collected cenosphere fractions separated from high-calcium class C fly ash produced from a lignite coal power plant in Thailand (as magnetic cenospheres). The CaO and SO3 contents increased monotonically with increased water content, particularly for the CaO composition profile, which was found to be similar to the increased carbonate concentration measured from the mixtures after use. The physicochemical properties in terms of the self-association ability of the acetone–water mixing phase is believed to have played an important role in determining the intermolecular interactions and reactivity of ions in the liquid phase, consequently affecting the separation efficiency, recovery yield, and quality of cenospheres.
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13
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Chang CC, Yeh CL, Chang HH, Kuo YF, Huang PY, Lin CP. Effect of different zinc concentrations on partially-stabilized cement for vital pulp therapy. J Formos Med Assoc 2019; 118:1610-1615. [PMID: 31445847 DOI: 10.1016/j.jfma.2019.08.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/04/2019] [Accepted: 08/07/2019] [Indexed: 10/26/2022] Open
Abstract
BACKGROUND/PURPOSE We have developed and investigated the partially-stabilized cements (PSC) with Zn for vital pulp therapy due to their short setting time and high cell biocompatibility. However, the effect of PSC with different concentrations of Zn on setting time and biocompatibility remained unknown. Therefore, the purpose of this study was to determine the optimal concentration of Zn to be synthesized with PSC for vital pulp therapy. METHODS PSC with different weight percentages of Zn (5%, 7%, 10%) were synthesized to attain 5%Zn-PSC, 7%Zn-PSC, and 10%Zn-PSC. The initial and final setting times were measured using the Gillmore needles method, and the compressive strength tests were conducted using a universal testing machine. The phases of Zn-PSC powders were observed using an X-ray diffractometer (XRD). Human dental pulp stem cells (hDPSCs) were used to evaluate the biocompatibility and cytotoxicity of the materials via Alamar blue and LDH assays. Mineral trioxide aggregate (MTA) was used to be compared with Zn-PSC samples. RESULTS The initial and final setting times of PSC with different concentrations of Zn were reduced considerably compared to those of MTA. The results also indicated that the initial and final setting times decreased as the weight % of Zn increased. 5%Zn-PSC had the highest compressive strength among all tested materials. 5%Zn-PSC samples also displayed comparatively higher cell biocompatibility than 7% and 10% Zn-PSC samples. However, there was no significant difference between the 5%Zn-PSC and MTA in cell biocompatibility. In addition, the results of the LDH release assay indicated a low level of cytotoxicity among all the test samples. CONCLUSION 5%Zn-PSC has a shorter setting time, better mechanical properties, and good biocompatibility and thus it has great potential for vital pulp therapy.
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Affiliation(s)
- Chih-Chun Chang
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Chun-Liang Yeh
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Hao-Hueng Chang
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Fang Kuo
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Po-Ya Huang
- 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; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.
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14
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Voicu G, Didilescu AC, Stoian AB, Dumitriu C, Greabu M, Andrei M. Mineralogical and Microstructural Characteristics of Two Dental Pulp Capping Materials. MATERIALS 2019; 12:ma12111772. [PMID: 31159182 PMCID: PMC6600720 DOI: 10.3390/ma12111772] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 05/26/2019] [Accepted: 05/28/2019] [Indexed: 02/07/2023]
Abstract
This paper aims to investigate the composition, surface, and microstructural characteristics, and bioactivity of two commercially available pulp capping materials known as TheraCal LC and BIO MTA+. The materials were prepared as cylindrical samples and assessed by X-ray diffraction (XRD) and complex thermal analysis for mineralogical characterization, and by scanning electron microscopy (SEM) coupled with energy dispersive of X-ray (EDX), Fourier-Transformed Infrared Spectroscopy (FT-IR), and atomic force microscopy (AFM) for microstructural and surface characteristics. The in vitro bioactivity was highlighted by surface mineralization throughout SEM coupled with EDX and FT-IR analysis. XRD analysis performed on both materials showed calcium silicate phases and different radiopacifying compounds. AFM measurements indicated a smoother and more homogenous surface with a lower average roughness for TheraCal LC due to the resin matrix from its composition. FT-IR analysis displayed bands for several compounds in both materials. Both materials exhibited bioactive properties showing surface mineralization after being immersed in solution similar to the human physiological environment. However, the MTA cement showed a better mineralization due to the anhydrous and hydrated phases.
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Affiliation(s)
- Georgeta Voicu
- Department of Biomaterials and Medical Devices, Faculty of Medical Engineering, University Politehnica of Bucharest, 1-7 Polizu, 011061 Bucharest, Romania.
| | - Andreea C Didilescu
- Division of Embryology, Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 8 Eroii Sanitari Boulevard, 050474 Bucharest, Romania.
| | - Andrei B Stoian
- Department of General Chemistry, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, University Politehnica of Bucharest, 1-7 Polizu, 011061 Bucharest, Romania.
| | - Cristina Dumitriu
- Department of General Chemistry, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, University Politehnica of Bucharest, 1-7 Polizu, 011061 Bucharest, Romania.
| | - Maria Greabu
- Division of Biochemistry, Carol Davila University of Medicine and Pharmacy, 8 Eroii Sanitari Boulevard, 050474 Bucharest, Romania.
| | - Mihai Andrei
- Division of Embryology, Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 8 Eroii Sanitari Boulevard, 050474 Bucharest, Romania.
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15
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Jiménez-Sánchez MDC, Segura-Egea JJ, Díaz-Cuenca A. Higher hydration performance and bioactive response of the new endodontic bioactive cement MTA HP repair compared with ProRoot MTA white and NeoMTA plus. J Biomed Mater Res B Appl Biomater 2019; 107:2109-2120. [PMID: 30637928 DOI: 10.1002/jbm.b.34304] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 12/19/2018] [Indexed: 12/31/2022]
Abstract
The aim of this study was to characterize the hydration performance and the bioactive response of the new bioactive endodontic cement MTA HP repair (HP), comparing its physicochemical parameters with those of ProRoot MTA White (Pro) and NeoMTA Plus (Neo). Un-hydrated precursor materials were characterized by X-ray fluorescence, laser diffraction, N2 physisorption and field emission gun scanning electron microscopy (FEG-SEM). Setting time was assessed according to ASTM specification C 266. Hydrated materials were analyzed by X-ray diffraction, Fourier transform infrared spectroscopy (FT-IR) and (FEG-SEM). Bioactivity evaluation in vitro was carried out, by soaking processed cement disk in simulated body fluid (SBF) during 168 h. The cements surface was studied by FT-IR, FEG-SEM, and energy dispersive X-ray. Release to the SBF media of ionic degradation products was monitored using inductively coupled plasma atomic emission spectroscopy. HP showed shorter initial setting time compared to Pro and Neo and produce a quick and effective bioactive response in vitro in terms of phosphate phase surface coating formation. This higher bioactive response for HP is correlated with increasing calcium aluminate content, increasing surface area of un-hydrated powder precursor and the increasing release capacity of Si ionic products of the final hydrated product. The higher bioactive response of MTA HP repair highlights this material, as very interesting to further investigate its performance to improve the outcome of vital pulp therapy procedures. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 2109-2120, 2019.
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Affiliation(s)
- María Del Carmen Jiménez-Sánchez
- Department of Stomatology, Faculty of Dentistry, University of Sevilla, Sevilla, Spain.,Materials Science Institute of Seville (ICMS), Joint CSIC-University of Seville Center, Sevilla, Spain
| | - Juan José Segura-Egea
- Department of Stomatology, Faculty of Dentistry, University of Sevilla, Sevilla, Spain
| | - Aránzazu Díaz-Cuenca
- Materials Science Institute of Seville (ICMS), Joint CSIC-University of Seville Center, Sevilla, Spain.,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
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16
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Huang KH, Lin YH, Shie MY, Lin CP. Effects of bone morphogenic protein-2 loaded on the 3D-printed MesoCS scaffolds. J Formos Med Assoc 2018; 117:879-887. [PMID: 30097222 DOI: 10.1016/j.jfma.2018.07.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 06/08/2018] [Accepted: 07/09/2018] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND/PURPOSE The mesoporous calcium silicate (MesoCS) 3D-printed scaffold show excellent bioactivity and can enhance the bone-like apatite formation. The purpose of this study aims to consider the effects of the different loading methods on the novel grafting materials which composed of bone morphogenetic protein-2 (BMP-2) loaded MesoCS scaffold by employing 3D-printing technique. METHODS The MesoCS scaffold were fabricated by fused deposition modeling. In this study, there are two methods of loading BMP-2: (1) the pre-loading (PL) method by mixing MesoCS and BMP-2 as a raw material for a 3D-printer, and (2) the direct-loading (DL) method by soaking the 3D-printed MesoCS scaffold in a BMP-2 solution. The characteristics of MesoCS scaffold were examined by transmission electron microscopy (TEM), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Their physical properties, biocompatibility, and osteogenic-related ability were also evaluated. RESULTS The 3D MesoCS/PCL scaffolds showed excellent biocompatibility and physical properties. After soaking in simulated body fluid, the bone-like apatite layer of the PL and DL groups could be formed. In addition, the DL group released fifty percent more than the PL group at the end of the first day and PL showed a sustained release profile after 2 weeks. CONCLUSION The 3D MesoCS/PCL porous scaffolds were successfully fabricated via a 3D printing system and were tested in vitro and were found to show good cellular activity for cell behavior although the PL method was not favorable for clinical application in relation with the preservation of BMP-2. With regards to different growth factor loading methods, this study demonstrated that PL of BMP-2 into MesoCS prior to printing will result in a more sustained drug release pattern as compared to traditional methods of scaffolds directly immersed with BMP-2.
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Affiliation(s)
- Kuo-Hao Huang
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Yen-Hong Lin
- The Ph.D. Program for Medical Engineering and Rehabilitation Science, China Medical University, Taichung, Taiwan; 3D Printing Medical Research Center, China Medical University Hospital, Taichung, Taiwan
| | - Ming-You Shie
- 3D Printing Medical Research Center, China Medical University Hospital, Taichung, Taiwan; School of Dentistry, China Medical University, Taichung, Taiwan; Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan
| | - Chun-Pin Lin
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.
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17
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Ashofteh Yazdi K, Ghabraei S, Bolhari B, Kafili M, Meraji N, Nekoofar MH, Dummer PMH. Microstructure and chemical analysis of four calcium silicate-based cements in different environmental conditions. Clin Oral Investig 2018; 23:43-52. [PMID: 29603021 DOI: 10.1007/s00784-018-2394-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 02/15/2018] [Indexed: 12/21/2022]
Abstract
OBJECTIVE The objective of this study was to analyze the microstructure and crystalline structures of ProRoot MTA, Biodentine, CEM Cement, and Retro MTA when exposed to phosphate-buffered saline, butyric acid, and blood. METHODS AND MATERIALS Mixed samples of ProRoot MTA, Biodentine, CEM Cement, and Retro MTA were exposed to either phosphate-buffered saline, butyric acid, or blood. Scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopic (EDX) evaluations were conducted of specimens. X-ray diffraction (XRD) analysis was also performed for both hydrated and powder forms of evaluated calcium silicate cements. RESULTS The peak of tricalcium silicate and dicalcium silicate detected in all hydrated cements was smaller than that seen in their unhydrated powders. The peak of calcium hydroxide (Ca(OH)2) in blood- and acid-exposed ProRoot MTA, CEM Cement, and Retro MTA specimens were smaller than that of specimens exposed to PBS. The peak of Ca(OH)2 seen in Biodentine™ specimens exposed to blood was similar to that of PBS-exposed specimens. On the other hand, those exposed to acid exhibited smaller peaks of Ca(OH)2. CONCLUSION Exposure to blood or acidic pH decreased Ca(OH)2 crystalline formation in ProRoot MTA, CEM Cement and Retro MTA. However, a decrease in Ca(OH)2 was only seen when Biodentine™ exposed to acid. CLINICAL RELEVANCE The formation of Ca(OH)2 which influences the biological properties of calcium silicate cements was impaired by blood and acid exposures in ProRoot MTA, CEM Cement, and Retro MTA; however, in the case of Biodentine, only exposure to acid had this detrimental effect.
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Affiliation(s)
- K Ashofteh Yazdi
- Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Sh Ghabraei
- Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - B Bolhari
- Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - M Kafili
- Department of Endodontics, School of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - N Meraji
- Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
| | - M H Nekoofar
- Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran. .,School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK.
| | - P M H Dummer
- School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK
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18
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Estrada-Flores S, Martínez-Luévanos A, Bartolo-Pérez P, García-Cerda LA, Flores-Guia TE, Aguilera-González EN. Facile synthesis of novel calcium silicate hydrated-nylon 6/66 nanocomposites by solution mixing method. RSC Adv 2018; 8:41818-41827. [PMID: 35558795 PMCID: PMC9091975 DOI: 10.1039/c8ra07116k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Accepted: 12/04/2018] [Indexed: 11/25/2022] Open
Abstract
In this article a facile and green procedure for the synthesis of novel calcium silicate hydrated-nylon 6/66 nanocomposites is proposed. Calcium silicate hydrate (CSH) was synthesized by a hydrolysis technique assisted by ultrasound and using sodium dodecyl sulphate (SDS) as surfactant. CSH-nylon 6/66 nanocomposites were obtained by a solution mixing method at CSH loadings of 2.5, 25, 50 and 75 weight percent (samples CA, CD, CB and CC, respectively). The synthesis of CSH was confirmed by DRX and ATR-FTIR techniques; the CSH sample presents as mesoporous with a diameter between 3.34 nm and 52.68 nm and an average size of 27.07 nm; the specific surface area of the CSH sample was 343.99 m2 g−1. The formation of the CSH-nylon 6/66 nanocomposites was confirmed by ATR-FTIR, SEM, XRD, TGA, DSC and XPS techniques. The crystallization and melting temperatures (Tm and Tc, respectively) of CSH-nylon 6/66 nanocomposites occur at a slightly lower temperatures than those of neat Ny 6/66. These results suggest a slight decrease of the crystallite size and crystallization rate of nylon 6/66. The fusion enthalpy (ΔHf) decreases with increase in CSH content in nylon 6/66, which can be associated to a good dispersion. The XRD peaks of the nylon 6/66 at 19.99° and 23.77° were displaced at slightly higher values of 2θ with the incorporation of CSH in the polymer forming nanocomposite materials. In this work it was possible to synthesize novel CSH-nylon 6/66 nanocomposites using a simple and easy methodology such as the solution mixing method and using green solvents like water, formic acid and ethanol.![]()
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Affiliation(s)
- S. Estrada-Flores
- Departamento de Materiales Cerámicos Avanzados y Energía
- Facultad de Ciencias Químicas
- Universidad Autónoma de Coahuila
- Saltillo
- Mexico
| | - A. Martínez-Luévanos
- Departamento de Materiales Cerámicos Avanzados y Energía
- Facultad de Ciencias Químicas
- Universidad Autónoma de Coahuila
- Saltillo
- Mexico
| | | | | | - T. E. Flores-Guia
- Departamento de Materiales Cerámicos Avanzados y Energía
- Facultad de Ciencias Químicas
- Universidad Autónoma de Coahuila
- Saltillo
- Mexico
| | - E. N. Aguilera-González
- Departamento de Materiales Cerámicos Avanzados y Energía
- Facultad de Ciencias Químicas
- Universidad Autónoma de Coahuila
- Saltillo
- Mexico
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19
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Anti-inflammation performance of curcumin-loaded mesoporous calcium silicate cement. J Formos Med Assoc 2017; 116:679-688. [DOI: 10.1016/j.jfma.2017.06.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 05/26/2017] [Accepted: 06/07/2017] [Indexed: 12/18/2022] Open
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