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Gil J, Manero JM, Ruperez E, Velasco-Ortega E, Jiménez-Guerra A, Ortiz-García I, Monsalve-Guil L. Mineralization of Titanium Surfaces: Biomimetic Implants. Materials (Basel) 2021; 14:2879. [PMID: 34072082 DOI: 10.3390/ma14112879] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/21/2021] [Accepted: 05/25/2021] [Indexed: 02/06/2023]
Abstract
The surface modification by the formation of apatitic compounds, such as hydroxyapatite, improves biological fixation implants at an early stage after implantation. The structure, which is identical to mineral content of human bone, has the potential to be osteoinductive and/or osteoconductive materials. These calcium phosphates provoke the action of the cell signals that interact with the surface after implantation in order to quickly regenerate bone in contact with dental implants with mineral coating. A new generation of calcium phosphate coatings applied on the titanium surfaces of dental implants using laser, plasma-sprayed, laser-ablation, or electrochemical deposition processes produces that response. However, these modifications produce failures and bad responses in long-term behavior. Calcium phosphates films result in heterogeneous degradation due to the lack of crystallinity of the phosphates with a fast dissolution; conversely, the film presents cracks, which produce fractures in the coating. New thermochemical treatments have been developed to obtain biomimetic surfaces with calcium phosphate compounds that overcome the aforementioned problems. Among them, the chemical modification using biomineralization treatments has been extended to other materials, including composites, bioceramics, biopolymers, peptides, organic molecules, and other metallic materials, showing the potential for growing a calcium phosphate layer under biomimetic conditions.
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Imagawa N, Inoue K, Matsumoto K, Ochi A, Omori M, Yamamoto K, Nakajima Y, Kato-Kogoe N, Nakano H, Matsushita T, Yamaguchi S, Thi Minh Le P, Maruyama S, Ueno T. Mechanical, Histological, and Scanning Electron Microscopy Study of the Effect of Mixed-Acid and Heat Treatment on Additive-Manufactured Titanium Plates on Bonding to the Bone Surface. Materials (Basel) 2020; 13:E5104. [PMID: 33198250 PMCID: PMC7696444 DOI: 10.3390/ma13225104] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 12/25/2022]
Abstract
The additive manufacturing (AM) technique has attracted attention as one of the fully customizable medical material technologies. In addition, the development of new surface treatments has been investigated to improve the osteogenic ability of the AM titanium (Ti) plate. The purpose of this study was to evaluate the osteogenic activity of the AM Ti with mixed-acid and heat (MAH) treatment. Fully customized AM Ti plates were created with a curvature suitable for rat calvarial bone, and they were examined in a group implanted with the MAH-treated Ti in comparison with the untreated (UN) group. The AM Ti plates were fixed to the surface of rat calvarial bone, followed by extraction of the calvarial bone 1, 4, 8, and 12 weeks after implantation. The bonding between the bone and Ti was evaluated mechanically. In addition, AM Ti plates removed from the bone were examined histologically by electron microscopy and Villanueva-Goldner stain. The mechanical evaluation showed significantly stronger bone-bonding in the MAH group than in the UN group. In addition, active bone formation was seen histologically in the MAH group. Therefore, these findings indicate that MAH resulted in rapid and strong bonding between cortical bone and Ti.
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Affiliation(s)
- Naoko Imagawa
- Division of Medicine for Function and Morphology of Sensor Organs, Department of Dentistry and Oral Surgery, Faculty of Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan; (N.I.); (K.M.); (A.O.); (M.O.); (K.Y.); (Y.N.); (N.K.-K.); (H.N.); (T.U.)
| | - Kazuya Inoue
- Division of Medicine for Function and Morphology of Sensor Organs, Department of Dentistry and Oral Surgery, Faculty of Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan; (N.I.); (K.M.); (A.O.); (M.O.); (K.Y.); (Y.N.); (N.K.-K.); (H.N.); (T.U.)
| | - Keisuke Matsumoto
- Division of Medicine for Function and Morphology of Sensor Organs, Department of Dentistry and Oral Surgery, Faculty of Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan; (N.I.); (K.M.); (A.O.); (M.O.); (K.Y.); (Y.N.); (N.K.-K.); (H.N.); (T.U.)
| | - Ayako Ochi
- Division of Medicine for Function and Morphology of Sensor Organs, Department of Dentistry and Oral Surgery, Faculty of Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan; (N.I.); (K.M.); (A.O.); (M.O.); (K.Y.); (Y.N.); (N.K.-K.); (H.N.); (T.U.)
| | - Michi Omori
- Division of Medicine for Function and Morphology of Sensor Organs, Department of Dentistry and Oral Surgery, Faculty of Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan; (N.I.); (K.M.); (A.O.); (M.O.); (K.Y.); (Y.N.); (N.K.-K.); (H.N.); (T.U.)
| | - Kayoko Yamamoto
- Division of Medicine for Function and Morphology of Sensor Organs, Department of Dentistry and Oral Surgery, Faculty of Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan; (N.I.); (K.M.); (A.O.); (M.O.); (K.Y.); (Y.N.); (N.K.-K.); (H.N.); (T.U.)
| | - Yoichiro Nakajima
- Division of Medicine for Function and Morphology of Sensor Organs, Department of Dentistry and Oral Surgery, Faculty of Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan; (N.I.); (K.M.); (A.O.); (M.O.); (K.Y.); (Y.N.); (N.K.-K.); (H.N.); (T.U.)
| | - Nahoko Kato-Kogoe
- Division of Medicine for Function and Morphology of Sensor Organs, Department of Dentistry and Oral Surgery, Faculty of Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan; (N.I.); (K.M.); (A.O.); (M.O.); (K.Y.); (Y.N.); (N.K.-K.); (H.N.); (T.U.)
| | - Hiroyuki Nakano
- Division of Medicine for Function and Morphology of Sensor Organs, Department of Dentistry and Oral Surgery, Faculty of Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan; (N.I.); (K.M.); (A.O.); (M.O.); (K.Y.); (Y.N.); (N.K.-K.); (H.N.); (T.U.)
| | - Tomiharu Matsushita
- Department of Biomedical Science, College of Life and Health Sciences, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan; (T.M.); (S.Y.); (P.T.M.L.)
| | - Seiji Yamaguchi
- Department of Biomedical Science, College of Life and Health Sciences, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan; (T.M.); (S.Y.); (P.T.M.L.)
| | - Phuc Thi Minh Le
- Department of Biomedical Science, College of Life and Health Sciences, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan; (T.M.); (S.Y.); (P.T.M.L.)
| | - Shinpei Maruyama
- Osaka Yakin Kogyo Co., Ltd., 4-4-28, Zuiko, Yodogawa-ku, Osaka 533-0005, Japan;
| | - Takaaki Ueno
- Division of Medicine for Function and Morphology of Sensor Organs, Department of Dentistry and Oral Surgery, Faculty of Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan; (N.I.); (K.M.); (A.O.); (M.O.); (K.Y.); (Y.N.); (N.K.-K.); (H.N.); (T.U.)
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Abstract
Titanium (Ti) and its alloys are widely used for medical and dental implant devices-artificial joints, bone fixators, spinal fixators, dental implant, etc. -because they show excellent corrosion resistance and good hard-tissue compatibility (bone formation and bone bonding ability). Osseointegration is the first requirement of the interface structure between titanium and bone tissue. This concept of osseointegration was immediately spread to dental-materials researchers worldwide to show the advantages of titanium as an implant material compared with other metals. Since the concept of osseointegration was developed, the cause of osseointegration has been actively investigated. The surface chemical state, adsorption characteristics of protein, and bone tissue formation process have also been evaluated. To accelerate osseointegration, roughened and porous surfaces are effective. HA and TiO2 coatings prepared by plasma spray and an electrochemical technique, as well as alkalinization of the surface, are also effective to improve hard-tissue compatibility. Various immobilization techniques for biofunctional molecules have been developed for bone formation and prevention of platelet and bacteria adhesion. These techniques make it possible to apply Ti to a scaffold of tissue engineering. The elucidation of the mechanism of the excellent biocompatibility of Ti can provide a shorter way to develop optimal surfaces. This review should enhance the understanding of the properties and biocompatibility of Ti and highlight the significance of surface treatment.
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Affiliation(s)
- Takao Hanawa
- Department of Metallic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
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Drago L, Toscano M, Bottagisio M. Recent Evidence on Bioactive Glass Antimicrobial and Antibiofilm Activity: A Mini-Review. Materials (Basel) 2018; 11:E326. [PMID: 29495292 DOI: 10.3390/ma11020326] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 02/14/2018] [Accepted: 02/17/2018] [Indexed: 12/19/2022]
Abstract
Bone defects caused by trauma or pathological events are major clinical and socioeconomic burdens. Thus, the efforts of regenerative medicine have been focused on the development of non-biodegradable materials resembling bone features. Consequently, the use of bioactive glass as a promising alternative to inert graft materials has been proposed. Bioactive glass is a synthetic silica-based material with excellent mechanical properties able to bond to the host bone tissue. Indeed, when immersed in physiological fluids, bioactive glass reacts, developing an apatite layer on the granule’s surface, playing a key role in the osteogenesis process. Moreover, the contact of bioactive glass with biological fluids results in the increase of osmotic pressure and pH due to the leaching of ions from granules’ surface, thus making the surrounding environment hostile to microbial growth. The bioactive glass antimicrobial activity is effective against a wide selection of aerobic and anaerobic bacteria, either in planktonic or sessile forms. Furthermore, bioglass is able to reduce pathogens’ biofilm production. For the aforementioned reasons, the use of bioactive glass might be a promising solution for the reconstruction of bone defects, as well as for the treatment and eradication of bone infections, characterized by bone necrosis and destruction of the bone structure.
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Huang ZM, Qi YY, Du SH, Feng G, Unuma H, Yan WQ. Promotion of osteogenic differentiation of stem cells and increase of bone-bonding ability in vivo using urease-treated titanium coated with calcium phosphate and gelatin. Sci Technol Adv Mater 2013; 14:055001. [PMID: 27877608 PMCID: PMC5090371 DOI: 10.1088/1468-6996/14/5/055001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Accepted: 08/01/2013] [Indexed: 06/06/2023]
Abstract
Because of its excellent biocompatibility and low allergenicity, titanium has been widely used for bone replacement and tissue engineering. To produce a desirable composite with enhanced bone response and mechanical strength, in this study bioactive calcium phosphate (CaP) and gelatin composites were coated onto titanium (Ti) via a novel urease technique. The cellular responses to the CaP/gelatin/Ti (CaP/gel/Ti) and bone bonding ability were evaluated with proliferation and osteogenic differentiation of mesenchymal stem cells (MSCs) on CaP/gel/Ti and CaP/Ti in vitro. The results showed that the optical density values, alkaline phosphatase expression and genes expression of MSCs on CaP/gel/Ti were similar to those on CaP/Ti, yet significantly higher than those on pure Ti (p < 0.05). CaP/gel/Ti and CaP/Ti rods (2 mm in diameter, 10 mm in length) were also implanted into femoral shaft of rabbits and pure Ti rods served as control (n = 10). Histological examination, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) measurements were performed at 4 and 8 weeks after the operation. The histological and SEM observations demonstrated clearly that more new bone formed on the surface of CaP/gel/Ti than in the other two groups at each time point. The CaP/gel/Ti bonded to the surrounding bone directly with no intervening soft tissue layer. An interfacial layer, containing Ti, Ca and P, was found to form at the interface between bone and the implant on all three groups by EDS analysis. However, the content of Ca, P in the surface of CaP/gel/Ti implants was more than in the other two groups at each time point. The CaP/gel/Ti modified by the urease method was not only beneficial for MSCs proliferation and osteogenic differentiation, but also favorable for bone bonding ability on Ti implants in vivo, suggesting that Ti functionalized with CaP and gelatin might have a great potential in clinical joint replacement or dental implants.
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Affiliation(s)
- Zhong-Ming Huang
- Department of Orthopedic Surgery, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - Yi-Ying Qi
- Department of Orthopedic Surgery, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - Shao-Hua Du
- Department of Orthopedic Surgery, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - Gang Feng
- Department of Orthopedic Surgery, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - Hidero Unuma
- Department of Chemistry and Chemical Engineering, Yamagata University, Japan
| | - Wei-Qi Yan
- Department of Orthopedic Surgery, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
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