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Su QQ, Zhang C, Mai S, Lin HC, Zhi QH. Effect of poly (γ-glutamic acid)/tricalcium phosphate (γ-PGA/TCP) composite for dentin remineralization in vitro. Dent Mater J 2020; 40:26-34. [PMID: 32779606 DOI: 10.4012/dmj.2019-324] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The poly (γ-glutamic acid)/tricalcium phosphate (γ-PGA/TCP) composite was fabricated as a novel biomineralization material function in preventing caries. Demineralized bovine dentin specimens were prepared and randomly divided into 5 groups (i. α-TCP, ⅱ. γ-PGA, ⅲ. γ-PGA/TCP, ⅳ. CPP-ACP, and ⅴ. deionized water) and subjected to 14 days of pH cycling. Remineralization ability was evaluated by lesion depth, mineral loss and microhardness. The morphology of dentin depositions was observed with scanning electron microscope (SEM), the crystal structure was determined by X-ray diffraction (XRD), and the wettability was tested by contact angle measurements. ANOVA revealed specimens treated by γ-PGA/TCP presented the statistically least lesion depth (p<0.01) and mineral loss (p<0.001), and the highest hardness (p<0.001). SEM revealed prominent intra- and inter-tubular precipitates in both γ-PGA and γ-PGA/TCP groups. The XRD patterns of the deposition structures in all groups were similar to those of sound dentin, and the contact angle of water decreased after γ-PGA/TCP treatment.
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Affiliation(s)
- Qing-Qing Su
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology
| | - Chao Zhang
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instruments, School of Engineering, Sun Yat-Sen University
| | - Sui Mai
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology
| | - Huan-Cai Lin
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology
| | - Qing-Hui Zhi
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology
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Lowe B, Ottensmeyer MP, Xu C, He Y, Ye Q, Troulis MJ. The Regenerative Applicability of Bioactive Glass and Beta-Tricalcium Phosphate in Bone Tissue Engineering: A Transformation Perspective. J Funct Biomater 2019; 10:E16. [PMID: 30909518 PMCID: PMC6463135 DOI: 10.3390/jfb10010016] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 03/15/2019] [Accepted: 03/15/2019] [Indexed: 12/12/2022] Open
Abstract
The conventional applicability of biomaterials in the field of bone tissue engineering takes into consideration several key parameters to achieve desired results for prospective translational use. Hence, several engineering strategies have been developed to model in the regenerative parameters of different forms of biomaterials, including bioactive glass and β-tricalcium phosphate. This review examines the different ways these two materials are transformed and assembled with other regenerative factors to improve their application for bone tissue engineering. We discuss the role of the engineering strategy used and the regenerative responses and mechanisms associated with them.
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Affiliation(s)
- Baboucarr Lowe
- School of Dentistry, The University of Queensland, Brisbane, Herston 4006, Queensland, Australia.
- Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital and Harvard School of Dental Medicine, Boston, MA 02114, USA.
| | - Mark P Ottensmeyer
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.
| | - Chun Xu
- School of Dentistry, The University of Queensland, Brisbane, Herston 4006, Queensland, Australia.
| | - Yan He
- School of Dentistry, The University of Queensland, Brisbane, Herston 4006, Queensland, Australia.
| | - Qingsong Ye
- School of Dentistry, The University of Queensland, Brisbane, Herston 4006, Queensland, Australia.
| | - Maria J Troulis
- Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital and Harvard School of Dental Medicine, Boston, MA 02114, USA.
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Shu X, Feng J, Feng J, Huang X, Li L, Shi Q. Combined delivery of bone morphogenetic protein-2 and insulin-like growth factor-1 from nano-poly (γ-glutamic acid)/β-tricalcium phosphate-based calcium phosphate cement and its effect on bone regeneration in vitro. J Biomater Appl 2018; 32:547-560. [PMID: 29113568 DOI: 10.1177/0885328217737654] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this study, nano-doped calcium phosphate cement delivery systems (poly (γ-glutamic acid)/β-tricalcium phosphate/calcium phosphate ceramics and nano (γ-glutamic acid)/β-tricalcium phosphate/calcium phosphate ceramic) were fabricated, and low doses (10 µg/g) of two growth factors, insulin-like growth factor-1 and bone morphogenetic protein-2, were encapsulated then sequentially released. We characterized the delivery systems using Fourier transform infrared spectroscopy and X-ray diffraction and measured washout resistance and compressive strength, and thus optimized the most appropriate proportioning of delivery systems for the two growth factors. One of the growth factors was absorbed by the nano-poly (γ-glutamic acid)/β-tricalcium phosphate, which was then mixed into the calcium phosphate ceramic solid phase to create a new solid phase calcium phosphate ceramic. Nano-poly (γ-glutamic acid)/β-tricalcium phosphate/calcium phosphate ceramic carriers were then prepared by blending the new calcium phosphate ceramic solid phase powder with a solution of the remaining growth factor. The effects of different release patterns (studying sequential behavior) of insulin-like growth factor-1 and bone morphogenetic protein-2 on osteogenic proliferation and differentiation of the MC3t3-E1 mouse osteoblast cell were investigated. This combinational delivery system provided a controlled release of the two growth factors, in which nano-doping significantly affected their release kinetics. The incorporation of dual growth factors could potentially stimulate bone healing and promoting bone ingrowth processes at a low dose.
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Affiliation(s)
- Xiulin Shu
- 1 Guangdong Institute of Microbiology, China.,2 State Key Laboratory of Applied Microbiology Southern China, China.,3 Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, China.,4 Guangdong Open Laboratory of Applied Microbiology, China
| | - Jin Feng
- 1 Guangdong Institute of Microbiology, China.,2 State Key Laboratory of Applied Microbiology Southern China, China.,3 Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, China.,4 Guangdong Open Laboratory of Applied Microbiology, China
| | - Jing Feng
- 1 Guangdong Institute of Microbiology, China.,2 State Key Laboratory of Applied Microbiology Southern China, China.,3 Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, China.,4 Guangdong Open Laboratory of Applied Microbiology, China
| | - Xiaomo Huang
- 1 Guangdong Institute of Microbiology, China.,2 State Key Laboratory of Applied Microbiology Southern China, China.,3 Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, China.,4 Guangdong Open Laboratory of Applied Microbiology, China
| | - Liangqiu Li
- 1 Guangdong Institute of Microbiology, China.,2 State Key Laboratory of Applied Microbiology Southern China, China.,3 Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, China.,4 Guangdong Open Laboratory of Applied Microbiology, China
| | - Qingshan Shi
- 1 Guangdong Institute of Microbiology, China.,2 State Key Laboratory of Applied Microbiology Southern China, China.,3 Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, China.,4 Guangdong Open Laboratory of Applied Microbiology, China
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