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Zuo S, Peng Q, Luo T, Wang Y, Peng Z. Microwave-assisted synthesis of composites based on titanium and hydroxyapatite for dental implantation. Biomater Sci 2023; 12:92-107. [PMID: 37965798 DOI: 10.1039/d3bm01151h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Titanium (Ti) and its alloys are widely used in clinical practice. As they are not bioactive, hydroxyapatite (HA) is commonly used to modify them. This study offered a review of microwave-assisted synthesis of composites based on Ti and HA for dental implantation by exploring their interaction mechanisms with microwave and features of two main techniques, namely microwave coating and sintering, along with current challenges and potential solutions in the field. It was shown that microwave coating enables rapid deposition of HA, but suffers from problems such as uneven coating thickness, poor integrity and unstable composition of the products. They can be solved by creating interlayers, combining the spin coating technique, etc. Unlike microwave coating, microwave sintering can effectively modify the mechanical properties of the composites, despite the shortcomings of excessive elastic moduli and potential HA decomposition. These issues are expected to be addressed by adding alloying elements and employing appropriate materials as space holders and ion-doped HA for sintering.
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Affiliation(s)
- Shangyong Zuo
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Qian Peng
- Xiangya Stomatological Hospital, Central South University, Changsha 410008, China.
- Xiangya School of Stomatology, Central South University, Changsha 410008, China
- Hunan Key Laboratory of Oral Health Research, Central South University, Changsha 410008, China
| | - Ting Luo
- Xiangya Stomatological Hospital, Central South University, Changsha 410008, China.
- Xiangya School of Stomatology, Central South University, Changsha 410008, China
- Hunan Key Laboratory of Oral Health Research, Central South University, Changsha 410008, China
| | - Yuehong Wang
- Xiangya Stomatological Hospital, Central South University, Changsha 410008, China.
- Xiangya School of Stomatology, Central South University, Changsha 410008, China
- Hunan Key Laboratory of Oral Health Research, Central South University, Changsha 410008, China
| | - Zhiwei Peng
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
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Ayşeşek N, Arısan V, Balcıoğlu NB, Erol A, Kuruoğlu F, Tekkeşin MS, Ersanlı S. Boron- and Boric Acid-Treated Titanium Implant Surfaces in Sheep Tibia: A Histologic, Histomorphometric and Mechanical Study. Bioengineering (Basel) 2022; 9:bioengineering9110705. [PMID: 36421106 PMCID: PMC9687523 DOI: 10.3390/bioengineering9110705] [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: 10/02/2022] [Revised: 10/17/2022] [Accepted: 11/11/2022] [Indexed: 11/19/2022] Open
Abstract
The aim of this study was to compare the topographical, chemical and osseointegration characteristics of sandblasting and acid-etching (SLA) surfaces and dental implants treated by boron compounds. Titanium (Ti) disks (n = 20) were modified using boron (B) and boric acid (H3BO3) and then compared with the conventional SLA surface via surface topographic characterizations. Dental implants (3.5 mm in diameter and 8 mm in length) with the experimental surfaces (n = 96) were inserted into the tibias of six sheep, which were left to heal for 3 and 7 weeks. Histologic, histomorphometric (bone−implant contact (BIC%)) and mechanical tests (removal torque value (RTV)) were performed. The boron-coated surface (BC group) was smoother (Rz: 4.51 μm ± 0.13) than the SLA (5.86 μm ± 0.80) and the SLA-B (5.75 μm ± 0.64) groups (p = 0.033). After 3 weeks, the highest mean RTV was found in the SLA group (37 N/cm ± 2.87), and the difference compared with the BC group (30 N/cm ± 2.60) was statistically significant (p = 0.004). After 7 weeks, the mean RTV was >80 N/cm in all groups; the highest was measured in the H3BO3-treated (BS) group (89 N/cm ± 1.53) (p < 0.0001). No statistically significant differences were found in the BIC%s during both healing periods between the groups. H3BO3 seems to be a promising medium for dental implant osseointegration.
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Affiliation(s)
- Nazlı Ayşeşek
- Department of Oral Implantology, Faculty of Dentistry, İstanbul University, Fatih, 34452 İstanbul, Türkiye
| | - Volkan Arısan
- Department of Oral Implantology, Faculty of Dentistry, İstanbul University, Fatih, 34452 İstanbul, Türkiye
- Correspondence:
| | | | - Ayşe Erol
- Department of Physics, Faculty of Science, İstanbul University, Fatih, 34452 İstanbul, Türkiye
| | - Furkan Kuruoğlu
- Department of Physics, Faculty of Science, İstanbul University, Fatih, 34452 İstanbul, Türkiye
| | - Merva Soluk Tekkeşin
- Department of Tumor Pathology, Institute of Oncology, İstanbul University, Fatih, 34452 İstanbul, Türkiye
| | - Selim Ersanlı
- Department of Oral Implantology, Faculty of Dentistry, İstanbul University, Fatih, 34452 İstanbul, Türkiye
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Schwartz A, Kossenko A, Zinigrad M, Gofer Y, Borodianskiy K, Sobolev A. Hydroxyapatite Coating on Ti-6Al-7Nb Alloy by Plasma Electrolytic Oxidation in Salt-Based Electrolyte. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15207374. [PMID: 36295438 PMCID: PMC9611249 DOI: 10.3390/ma15207374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/15/2022] [Accepted: 10/19/2022] [Indexed: 05/15/2023]
Abstract
Titanium alloys have good biocompatibility and good mechanical properties, making them particularly suitable for dental and orthopedic implants. Improving their osseointegration with human bones is one of the most essential tasks. This can be achieved by developing hydroxyapatite (HA) on the treating surface using the plasma electrolytic oxidation (PEO) method in molten salt. In this study, a coating of titanium oxide-containing HA nanoparticles was formed on Ti-6Al-7Nb alloy by PEO in molten salt. Then, samples were subjected to hydrothermal treatment (HTT) to form HA crystals sized 0.5 to 1 μm. The effect of the current and voltage frequency for the creation of the coating on the morphology, chemical, and phase composition was studied. The anti-corrosion properties of the samples were studied using the potentiodynamic polarization test (PPT) and electrochemical impedance spectroscopy (EIS). An assessment of the morphology of the sample formed at a frequency of 100 Hz shows that the structure of this coating has a uniform submicron porosity, and its surface shows high hydrophilicity and anti-corrosion properties (4.90 × 106 Ohm·cm2). In this work, for the first time, the process of formation of a bioactive coating consisting of titanium oxides and HA was studied by the PEO method in molten salts.
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Affiliation(s)
- Avital Schwartz
- Department of Chemical Engineering, Ariel University, Ariel 4070000, Israel
| | - Alexey Kossenko
- Department of Chemical Engineering, Ariel University, Ariel 4070000, Israel
| | - Michael Zinigrad
- Department of Chemical Engineering, Ariel University, Ariel 4070000, Israel
| | - Yosef Gofer
- Department of Chemistry, Bar Ilan University, Ramat-Gan 5290002, Israel
| | | | - Alexander Sobolev
- Department of Chemical Engineering, Ariel University, Ariel 4070000, Israel
- Correspondence: ; Tel.: +972-3-9143085
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Zhu G, Peng Q, Luo T, Pan H, Wang Y, Peng Z. Synthesis of Ti6Al4V/SrFHA Composites by Microwave-Assisted Liquid Phase Deposition and Calcination. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6206. [PMID: 36143519 PMCID: PMC9500787 DOI: 10.3390/ma15186206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/20/2022] [Accepted: 09/02/2022] [Indexed: 06/16/2023]
Abstract
The feasibility of synthesis of Ti6Al4V/SrFHA (Ca9.37Sr0.63(PO4)6F2) composites via coating strontium and fluorine co-doped HA to Ti6Al4V substrate by microwave-assisted liquid phase deposition and calcination was evaluated, with a focus on the effect of the deposition temperature from 30 °C to 70 °C. The outcomes demonstrate that strontium and fluorine can be successfully doped into HA to form a SrFHA coating with modified micromorphology which is deposited on the alloy. When the deposition temperature was 50 °C, the coating with the largest uniform continuous SrFHA coverage was obtained. After calcination, the adhesion strength and Vickers microhardness of the Ti6Al4V/SrFHA composite increased from 0.68 MPa and 323 HV to 2.41 MPa and 329 HV, respectively, with a decrease in the water contact angle from 10.88° to 7.24°, exhibiting enhancement of both mechanical properties and wettability. Moreover, the composite obtained at the deposition temperature of 50 °C exhibited good bioactivity based on the simulate body fluid (SBF) test. On account of the above features primarily as a result of the combined effect of the co-doping of strontium and fluorine, high crystallinity of SrFHA, large surface roughness, and formation of the titanium oxide transition layer, the Ti6Al4V/SrFHA composite shows great potential in dental implantology.
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Affiliation(s)
- Guangyan Zhu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Qian Peng
- Xiangya Stomatological Hospital, Central South University, Changsha 410008, China
- Xiangya School of Stomatology, Central South University, Changsha 410008, China
- Hunan Key Laboratory of Oral Health Research, Central South University, Changsha 410008, China
| | - Ting Luo
- Xiangya Stomatological Hospital, Central South University, Changsha 410008, China
- Xiangya School of Stomatology, Central South University, Changsha 410008, China
- Hunan Key Laboratory of Oral Health Research, Central South University, Changsha 410008, China
| | - Hao Pan
- Xiangya Stomatological Hospital, Central South University, Changsha 410008, China
- Xiangya School of Stomatology, Central South University, Changsha 410008, China
- Hunan Key Laboratory of Oral Health Research, Central South University, Changsha 410008, China
| | - Yuehong Wang
- Xiangya Stomatological Hospital, Central South University, Changsha 410008, China
- Xiangya School of Stomatology, Central South University, Changsha 410008, China
- Hunan Key Laboratory of Oral Health Research, Central South University, Changsha 410008, China
| | - Zhiwei Peng
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
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