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Szczodra A, Houaoui A, Salminen T, Hannula M, Gobbo VA, Ghanavati S, Miettinen S, Massera J. Pore graded borosilicate bioactive glass scaffolds: in vitro dissolution and cytocompatibility. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2024; 35:17. [PMID: 38507150 PMCID: PMC10954867 DOI: 10.1007/s10856-024-06791-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 03/05/2024] [Indexed: 03/22/2024]
Abstract
3D borosilicate bioactive glass (1393B20 and B12.5MgSr) scaffolds were prepared by robocasting, with and without a dense layer at the top. Pore graded scaffolds are promising as they allow for membrane deposition and could limit the risk of soft tissue infiltration. In vitro dissolution was studied in tris(hydroxymethyl)aminomethane (TRIS) and Simulated Body Fluid (SBF). 1393B20 scaffolds dissolved faster than B12.5MgSr in TRIS whereas they dissolved slower in SBF. The difference in dissolution profiles, as a function of the medium used, is assigned to the different rates of precipitation of hydroxyapatite (HA). While the precipitation of calcium phosphate (CaP) in the form of HA, first sign of bioactivity, was confirmed by ICP, FTIR-ATR and SEM-EDX analysis for both compositions, 1393B20 was found to precipitate HA at a faster rate. The presence of a dense top layer did not significantly impact the dissolution rate and CaP precipitation. In vitro cell culture was performed using human adipose-derived stem cells (hADSCs). Prior to cell plating, a preincubation of 3 days was found optimum to prevent burst ion release. In direct contact, cells proliferate and spread on the scaffolds while maintaining characteristic spindle morphology. Cell plated on 1393B20 scaffolds showed increased viability when compared to cell plated on B12.5MgSr. The lower cell viability, when testing B12.5MgSr, was assigned to the depletion of Ca2+ ions from culture medium and higher pH. Static cell culture leads to believe that the scaffold produced from the 1393B20 glass composition are promising in bone regeneration applications.
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Affiliation(s)
- Agata Szczodra
- Tampere University, Faculty of Medicine and Health Technology, Tampere, Finland.
| | - Amel Houaoui
- Tampere University, Faculty of Medicine and Health Technology, Tampere, Finland
| | - Turkka Salminen
- Tampere University, Faculty of Engineering and Natural Sciences, Tampere, Finland
| | - Markus Hannula
- Tampere University, Faculty of Medicine and Health Technology, Tampere, Finland
| | | | - Sonya Ghanavati
- Tampere University, Faculty of Medicine and Health Technology, Tampere, Finland
| | - Susanna Miettinen
- Tampere University, Faculty of Medicine and Health Technology, Tampere, Finland
- Research Services, Wellbeing Services County of Pirkanmaa, Tampere University Hospital, Tampere, Finland
| | - Jonathan Massera
- Tampere University, Faculty of Medicine and Health Technology, Tampere, Finland
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2
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Improvement of the mechanical properties and osteogenic activity of 3D-printed polylactic acid porous scaffolds by nano-hydroxyapatite and nano-magnesium oxide. Heliyon 2022; 8:e09748. [PMID: 35761932 PMCID: PMC9233213 DOI: 10.1016/j.heliyon.2022.e09748] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/07/2022] [Accepted: 06/15/2022] [Indexed: 11/24/2022] Open
Abstract
Porous bone scaffolds based on high-precision 3D printing technology gave recently been developed for use in bone defect repair. However, conventional scaffold materials have poor mechanical properties and low osteogenic activity, limiting their clinical use. In this study, a porous composite tissue-engineered bone scaffold was prepared using polylactic acid, nano-hydroxyapatite, and nano-magnesium oxide as raw materials for high-precision 3D printing. The composite scaffold takes full advantage of the personalized manufacturing features of 3D printers and can be used to repair complex bone defects in clinical settings. The composite scaffold combines the advantages of nano-hydroxyapatite, which improves the formability of scaffold printing, and of nano-magnesium oxide, which regulates pH during degradation and provide a good environment for cell growth. Additionally, nano-magnesium oxide and nano-hydroxyapatite have a bidirectional effect on promoting the compressive strength and osteogenic activity of the scaffolds. The prepared composite porous scaffolds based on 3D printing technology show promise for bone defect repair.
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3
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Iron (Fe)-doped mesoporous 45S5 bioactive glasses: Implications for cancer therapy. Transl Oncol 2022; 20:101397. [PMID: 35366536 PMCID: PMC8972012 DOI: 10.1016/j.tranon.2022.101397] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 03/09/2022] [Accepted: 03/11/2022] [Indexed: 12/23/2022] Open
Abstract
Fe-doped mesoporous 45S5 BGs were successfully synthesized using the sol-gel route. Fe-doped MBGs exhibited a particles size of 12 nm with a high surface area of 306 m2/g. Fe-doped MBGs could generate H2O2 in a cathodic potential higher than −0.2 V. Fe-doped MBGs increased the standard rate constant of Electro-Fenton's (EF) reaction up to 38.44 times as compared with the Fe-free glasses.
The utilization of bioactive glasses (BGs) in cancer therapy has recently become quite promising; herein, a series of Fe-doped mesoporous 45S5-based BGs (MBGs) were synthesized via the sol-gel method in the presence of Pluronic P123 as a soft template. The physico-chemical and biological properties of the prepared glasses were well-characterized through structural assessments, thermal analyses, and electron microscopic studies. Electrochemical analyses, including cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), were also performed to investigate the actual potential of the Fe2O3-containing MBGs in modulating the Fenton's reaction. The XRD results confirmed the glassy state of the Fe-doped samples before immersion in simulated body fluid (SBF). The prepared Fe-doped MBGs exhibited a particle size in the range of 11–86 nm, surface charge of 27–30 mV, SBET of 95–306 m2/g, and Ms of 0.08 to 0.2 emu/g. The incorporation of Fe2O3 led to a negligible decrease in the bioactivity of the glasses. The CV analysis indicated that the Fe-doped MBGs could generate H2O2 in a cathodic potential higher than -0.2 V (vs. Ag/AgCl) in the O2-saturated Na2SO4 solution. Additionally, the data of the EIS test revealed that the Fe2O3-doped MBGs could increase the standard rate constant of Electro-Fenton's (EF) reaction up to 38.44 times as compared with the Fe-free glasses. In conclusion, Fe-doped 45S5-derived glasses may be useful in cancer therapy strategies due to their capability of activating Fenton's reaction and subsequent production of reactive oxygen species (ROS) such as •OH free radicals.
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Decker S, Arango-Ospina M, Rehder F, Moghaddam A, Simon R, Merle C, Renkawitz T, Boccaccini AR, Westhauser F. In vitro and in ovo impact of the ionic dissolution products of boron-doped bioactive silicate glasses on cell viability, osteogenesis and angiogenesis. Sci Rep 2022; 12:8510. [PMID: 35595847 PMCID: PMC9122978 DOI: 10.1038/s41598-022-12430-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 05/06/2022] [Indexed: 11/15/2022] Open
Abstract
Due to the pivotal role of angiogenesis in bone regeneration, the angiogenic properties of biomaterials are of high importance since they directly correlate with the biomaterials’ osteogenic potential via ‘angiogenic-osteogenic coupling’ mechanisms. The impact of bioactive glasses (BGs) on vascularization can be tailored by incorporation of biologically active ions such as boron (B). Based on the ICIE16-BG composition (in mol%: 49.5 SiO2, 36.3 CaO, 6.6 Na2O, 1.1 P2O5, 6.6 K2O), three B-doped BGs have been developed (compositions in mol%: 46.5/45.5/41.5 SiO2, 36.3 CaO, 6.6 Na2O, 1.1 P2O5, 6.6 K2O, 3/4/8 B2O3). The influence of B-doping on the viability, cellular osteogenic differentiation and expression of osteogenic and angiogenic marker genes of bone marrow-derived mesenchymal stromal cells (BMSCs) was analyzed by cultivating BMSCs in presence of the BGs’ ionic dissolution products (IDPs). Furthermore, the influence of the IDPs on angiogenesis was evaluated in ovo using a chorioallantoic membrane (CAM) assay. The influence of B-doped BGs on BMSC viability was dose-dependent, with higher B concentrations showing limited negative effects. B-doping led to a slight stimulation of osteogenesis and angiogenesis in vitro. In contrast to that, B-doping significantly enhanced vascularization in ovo, especially in higher concentrations. Differences between the results of the in vitro and in ovo part of this study might be explained via the different importance of vascularization in both settings. The implementation of new experimental models that cover the ‘angiogenic-osteogenic coupling’ mechanisms is highly relevant, for instance via extending the application of the CAM assay from solely angiogenic to angiogenic and osteogenic purposes.
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Affiliation(s)
- Simon Decker
- Department of Orthopaedics, Heidelberg University Hospital, Schlierbacher Landstraße 200a, 69118, Heidelberg, Germany
| | - Marcela Arango-Ospina
- Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstr. 6, 91058, Erlangen, Germany
| | - Felix Rehder
- Department of Orthopaedics, Heidelberg University Hospital, Schlierbacher Landstraße 200a, 69118, Heidelberg, Germany
| | - Arash Moghaddam
- Orthopedic and Trauma Surgery, Frohsinnstraße 12, 63739, Aschaffenburg, Germany
| | - Rolf Simon
- Department of Orthopaedics, Heidelberg University Hospital, Schlierbacher Landstraße 200a, 69118, Heidelberg, Germany
| | - Christian Merle
- Department of Orthopaedics, Heidelberg University Hospital, Schlierbacher Landstraße 200a, 69118, Heidelberg, Germany
| | - Tobias Renkawitz
- Department of Orthopaedics, Heidelberg University Hospital, Schlierbacher Landstraße 200a, 69118, Heidelberg, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstr. 6, 91058, Erlangen, Germany
| | - Fabian Westhauser
- Department of Orthopaedics, Heidelberg University Hospital, Schlierbacher Landstraße 200a, 69118, Heidelberg, Germany.
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Bone Regeneration and Oxidative Stress: An Updated Overview. Antioxidants (Basel) 2022; 11:antiox11020318. [PMID: 35204201 PMCID: PMC8868092 DOI: 10.3390/antiox11020318] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 01/27/2022] [Accepted: 02/02/2022] [Indexed: 11/17/2022] Open
Abstract
Bone tissue engineering is a complex domain that requires further investigation and benefits from data obtained over past decades. The models are increasing in complexity as they reveal new data from co-culturing and microfluidics applications. The in vitro models now focus on the 3D medium co-culturing of osteoblasts, osteoclasts, and osteocytes utilizing collagen for separation; this type of research allows for controlled medium and in-depth data analysis. Oxidative stress takes a toll on the domain, being beneficial as well as destructive. Reactive oxygen species (ROS) are molecules that influence the differentiation of osteoclasts, but over time their increasing presence can affect patients and aid the appearance of diseases such as osteoporosis. Oxidative stress can be limited by using antioxidants such as vitamin K and N-acetyl cysteine (NAC). Scaffolds and biocompatible coatings such as hydroxyapatite and bioactive glass are required to isolate the implant, protect the zone from the metallic, ionic exchange, and enhance the bone regeneration by mimicking the composition and structure of the body, thus enhancing cell proliferation. The materials can be further functionalized with growth factors that create a better response and higher chances of success for clinical use. This review highlights the vast majority of newly obtained information regarding bone tissue engineering, such as new co-culturing models, implant coatings, scaffolds, biomolecules, and the techniques utilized to obtain them.
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6
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Pantulap U, Arango-Ospina M, Boccaccini AR. Bioactive glasses incorporating less-common ions to improve biological and physical properties. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2021; 33:3. [PMID: 34940923 PMCID: PMC8702415 DOI: 10.1007/s10856-021-06626-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 11/07/2021] [Indexed: 05/29/2023]
Abstract
Bioactive glasses (BGs) have been a focus of research for over five decades for several biomedical applications. Although their use in bone substitution and bone tissue regeneration has gained important attention, recent developments have also seen the expansion of BG applications to the field of soft tissue engineering. Hard and soft tissue repair therapies can benefit from the biological activity of metallic ions released from BGs. These metallic ions are incorporated in the BG network not only for their biological therapeutic effects but also in many cases for influencing the structure and processability of the glass and to impart extra functional properties. The "classical" elements in silicate BG compositions are silicon (Si), phosphorous (P), calcium (Ca), sodium (Na), and potassium (K). In addition, other well-recognized biologically active ions have been incorporated in BGs to provide osteogenic, angiogenic, anti-inflammatory, and antibacterial effects such as zinc (Zn), magnesium (Mg), silver (Ag), strontium (Sr), gallium (Ga), fluorine (F), iron (Fe), cobalt (Co), boron (B), lithium (Li), titanium (Ti), and copper (Cu). More recently, rare earth and other elements considered less common or, some of them, even "exotic" for biomedical applications, have found room as doping elements in BGs to enhance their biological and physical properties. For example, barium (Ba), bismuth (Bi), chlorine (Cl), chromium (Cr), dysprosium (Dy), europium (Eu), gadolinium (Gd), ytterbium (Yb), thulium (Tm), germanium (Ge), gold (Au), holmium (Ho), iodine (I), lanthanum (La), manganese (Mn), molybdenum (Mo), nickel (Ni), niobium (Nb), nitrogen (N), palladium (Pd), rubidium (Rb), samarium (Sm), selenium (Se), tantalum (Ta), tellurium (Te), terbium (Tb), erbium (Er), tin (Sn), tungsten (W), vanadium (V), yttrium (Y) as well as zirconium (Zr) have been included in BGs. These ions have been found to be particularly interesting for enhancing the biological performance of doped BGs in novel compositions for tissue repair (both hard and soft tissue) and for providing, in some cases, extra functionalities to the BG, for example fluorescence, luminescence, radiation shielding, anti-inflammatory, and antibacterial properties. This review summarizes the influence of incorporating such less-common elements in BGs with focus on tissue engineering applications, usually exploiting the bioactivity of the BG in combination with other functional properties imparted by the presence of the added elements.
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Affiliation(s)
- Usanee Pantulap
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, 91058, Erlangen, Germany
| | - Marcela Arango-Ospina
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, 91058, Erlangen, Germany
| | - Aldo R Boccaccini
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, 91058, Erlangen, Germany.
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7
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Deraine A, Rebelo Calejo MT, Agniel R, Kellomäki M, Pauthe E, Boissière M, Massera J. Polymer-Based Honeycomb Films on Bioactive Glass: Toward a Biphasic Material for Bone Tissue Engineering Applications. ACS APPLIED MATERIALS & INTERFACES 2021; 13:29984-29995. [PMID: 34129320 PMCID: PMC8289249 DOI: 10.1021/acsami.1c03759] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The development of innovative materials for bone tissue engineering to promote bone regeneration while avoiding fibrous tissue infiltration is of paramount importance. Here, we combined the known osteopromotive properties of bioactive glasses (BaGs) with the biodegradability, biocompatibility, and ease to shape/handle of poly-l-co-d,l-lactic acid (PLDLA) into a single biphasic material. The aim of this work was to unravel the role of the surface chemistry and topography of BaG surfaces on the stability of a PLDLA honeycomb membrane, in dry and wet conditions. The PLDLA honeycomb membrane was deposited using the breath figure method (BFM) on the surface of untreated BaG discs (S53P4 and 13-93B20), silanized with 3-aminopropyltriethoxysilane (APTES) or conditioned (immersed for 24 h in TRIS buffer solution). The PLDLA membranes deposited onto the BaG discs, regardless of their composition or surface treatments, exhibited a honeycomb-like structure with pore diameter ranging from 1 to 5 μm. The presence of positively charged amine groups (APTES grafting) or the precipitation of a CaP layer (conditioned) significantly improved the membrane resistance to shear as well as its stability upon immersion in the TRIS buffer solution. The obtained results demonstrated that the careful control of the substrate surface chemistry enabled the deposition of a stable honeycomb membrane at their surface. This constitutes a first step toward the development of new biphasic materials enabling osteostimulation (BaG) while preventing migration of fibrous tissue inside the bone defect (honeycomb polymer membrane).
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Affiliation(s)
- A. Deraine
- ERRMECe,
Equipe de Recherche sur les Relations Matrice Extracellulaire-Cellules
(EA1391), Université de Cergy-Pontoise, Maison Internationale
de la Recherche (MIR), Rue Descartes, 95001 Neuville sur Oise, Cedex, France
- Laboratory
of Biomaterials and Tissue Engineering, Faculty of Medicine and Health
Technology, Tampere University, Korkeakoulunkatu 3, 33720 Tampere, Finland
| | - M. T. Rebelo Calejo
- Laboratory
of Biomaterials and Tissue Engineering, Faculty of Medicine and Health
Technology, Tampere University, Korkeakoulunkatu 3, 33720 Tampere, Finland
| | - R. Agniel
- ERRMECe,
Equipe de Recherche sur les Relations Matrice Extracellulaire-Cellules
(EA1391), Université de Cergy-Pontoise, Maison Internationale
de la Recherche (MIR), Rue Descartes, 95001 Neuville sur Oise, Cedex, France
| | - M. Kellomäki
- Laboratory
of Biomaterials and Tissue Engineering, Faculty of Medicine and Health
Technology, Tampere University, Korkeakoulunkatu 3, 33720 Tampere, Finland
| | - E. Pauthe
- ERRMECe,
Equipe de Recherche sur les Relations Matrice Extracellulaire-Cellules
(EA1391), Université de Cergy-Pontoise, Maison Internationale
de la Recherche (MIR), Rue Descartes, 95001 Neuville sur Oise, Cedex, France
| | - M. Boissière
- ERRMECe,
Equipe de Recherche sur les Relations Matrice Extracellulaire-Cellules
(EA1391), Université de Cergy-Pontoise, Maison Internationale
de la Recherche (MIR), Rue Descartes, 95001 Neuville sur Oise, Cedex, France
| | - J. Massera
- Laboratory
of Biomaterials and Tissue Engineering, Faculty of Medicine and Health
Technology, Tampere University, Korkeakoulunkatu 3, 33720 Tampere, Finland
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New Generation of Hybrid Materials Based on Gelatin and Bioactive Glass Particles for Bone Tissue Regeneration. Biomolecules 2021; 11:biom11030444. [PMID: 33802745 PMCID: PMC8002581 DOI: 10.3390/biom11030444] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/12/2021] [Accepted: 03/15/2021] [Indexed: 11/22/2022] Open
Abstract
Hybrid scaffolds based on bioactive glass (BAG) particles (<38 µm), covalently linked to gelatin (G*) using 3-glycidoxypropyltrimethoxysilane (GPTMS), have been studied for bone bioengineering. In this study, two glass compositions (13-93 and 13-93B20 (where 20% of the SiO2 was replaced with B2O3)) were introduced in the gelatin matrix. The Cfactor (gelatin/GPTMS molar ratio) was kept constant at 500. The hybrids obtained were found to be stable at 37 °C in solution, the condition in which pure gelatin is liquid. All hybrids were characterized by in vitro dissolution in Tris(hydroxymethyl)aminomethane (TRIS) solution (for up to 4 weeks) and Simulated Body Fluid (SBF) (for up to 2 weeks). Samples processed with 13-93B20 exhibited faster initial dissolution and significantly faster precipitation of a hydroxyapatite (HA) layer. The faster ion release and HA precipitation recorded from the G*/13-93B20 samples are attributable to the higher reactivity of borosilicate compared to silicate glass. The MC3T3-E1 cell behavior in direct contact with the hybrids was investigated, showing that the cells were able to proliferate and spread on the developed biomaterials. Tailoring the glass composition allows us to better control the material’s dissolution, biodegradability, and bioactivity. Bioactive (especially with 13-93B20 BAG) and biocompatible, the hybrids are promising for bone application.
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9
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Lyyra I, Leino K, Hukka T, Hannula M, Kellomäki M, Massera J. Impact of Glass Composition on Hydrolytic Degradation of Polylactide/Bioactive Glass Composites. MATERIALS 2021; 14:ma14030667. [PMID: 33535590 PMCID: PMC7867177 DOI: 10.3390/ma14030667] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/24/2021] [Accepted: 01/26/2021] [Indexed: 01/09/2023]
Abstract
Understanding the degradation of a composite material is crucial for tailoring its properties based on the foreseen application. In this study, poly-L,DL-lactide 70/30 (PLA70) was compounded with silicate or phosphate bioactive glass (Si-BaG and P-BaG, respectively). The composite processing was carried out without excessive thermal degradation of the polymer and resulted in porous composites with lower mechanical properties than PLA70. The loss in mechanical properties was associated with glass content rather than the glass composition. The degradation of the composites was studied for 40 weeks in Tris buffer solution Adding Si-BaG to PLA70 accelerated the polymer degradation in vitro more than adding P-BaG, despite the higher reactivity of the P-BaG. All the composites exhibited a decrease in mechanical properties and increased hydrophilicity during hydrolysis compared to the PLA70. Both glasses dissolved through the polymer matrix with a linear, predictable release rate of ions. Most of the P-BaG had dissolved before 20 weeks in vitro, while there was still Si-BaG left after 40 weeks. This study introduces new polymer/bioactive glass composites with tailorable mechanical properties and ion release for bone regeneration and fixation applications.
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Affiliation(s)
- Inari Lyyra
- Faculty of Medicine and Health Technology, Tampere University, 33720 Tampere, Finland; (I.L.); (K.L.); (M.H.); (M.K.)
| | - Katri Leino
- Faculty of Medicine and Health Technology, Tampere University, 33720 Tampere, Finland; (I.L.); (K.L.); (M.H.); (M.K.)
| | - Terttu Hukka
- Faculty of Engineering and Natural Sciences, Chemistry and Advanced Materials, P.O. Box 541, Tampere University, 33720 Tampere, Finland;
| | - Markus Hannula
- Faculty of Medicine and Health Technology, Tampere University, 33720 Tampere, Finland; (I.L.); (K.L.); (M.H.); (M.K.)
| | - Minna Kellomäki
- Faculty of Medicine and Health Technology, Tampere University, 33720 Tampere, Finland; (I.L.); (K.L.); (M.H.); (M.K.)
| | - Jonathan Massera
- Faculty of Medicine and Health Technology, Tampere University, 33720 Tampere, Finland; (I.L.); (K.L.); (M.H.); (M.K.)
- Correspondence:
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10
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Zhang P, Yang K, Zhou Z, Zhu X, Li W, Cao C, Zhou K, Liao L, Ai F. Customized Borosilicate Bioglass Scaffolds With Excellent Biodegradation and Osteogenesis for Mandible Reconstruction. Front Bioeng Biotechnol 2021; 8:610284. [PMID: 33392173 PMCID: PMC7775478 DOI: 10.3389/fbioe.2020.610284] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 11/06/2020] [Indexed: 01/16/2023] Open
Abstract
Graft reconstruction of the mandible is an important approach that aims at improving the appearance and functionality of defected mandibles. The traditional implant materials are generally bioinert, non-degradable, and that they lack favorable pore structures for cell proliferation, which limit their clinical application. In this study, we used boron-containing bioactive glass which was combined with a three-dimensional (3D) printing technology to construct an osteoinductive implant scaffold, according to the imaging instructions of CT scan on bone defects. Here, the boron-containing bioglass scaffold (B-BGs) was prepared through sol-gel processing and a 3D print technique. Different boron content of borosilicate bioglass was prepared by incorporating B2O3 (molar: 19.4 and 38.8%) into 58S bioglass to replace parts of SiO2. For fabricated mandible implants through three-dimensional 3D printing of B-BGs (size: 8 × 2 mm; pore size: 250 μm) modified with borosilicate bioglass powder and sodium alginate. Notably, the compressive strength of the B-BGs was about 3.8 Mpa, which supported mandibular activity. Subsequently, the excellent biocompatibility of B-BGs was confirmed using cytotoxicity in vitro studies. Finally, data from in vivo experiments demonstrated that the B-BGs could promote bone regeneration and they could almost get completely degraded within 4 weeks. Our results showed that the boron-containing bioglass could repair mandibular defects.
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Affiliation(s)
- Peng Zhang
- School of Stomatology, Nanchang University, Nanchang, China.,The Key Laboratory of Oral Biomedicine, Jiangxi Province, Nanchang, China
| | - Kang Yang
- School of Pharmacy, Nanchang University, Nanchang, China
| | - Ziyu Zhou
- School of Stomatology, Nanchang University, Nanchang, China.,The Key Laboratory of Oral Biomedicine, Jiangxi Province, Nanchang, China
| | - Xingrong Zhu
- School of Stomatology, Nanchang University, Nanchang, China.,The Key Laboratory of Oral Biomedicine, Jiangxi Province, Nanchang, China
| | - Wenchao Li
- School of Mechatronics Engineering, Nanchang University, Nanchang, China.,Nanchang Municipal Key Laboratory of 3D Bioprinting Technology and Equipment, Nanchang, China
| | - Chuanliang Cao
- School of Mechatronics Engineering, Nanchang University, Nanchang, China.,Nanchang Municipal Key Laboratory of 3D Bioprinting Technology and Equipment, Nanchang, China
| | - Kui Zhou
- School of Mechatronics Engineering, Nanchang University, Nanchang, China.,Nanchang Municipal Key Laboratory of 3D Bioprinting Technology and Equipment, Nanchang, China
| | - Lan Liao
- School of Stomatology, Nanchang University, Nanchang, China.,The Key Laboratory of Oral Biomedicine, Jiangxi Province, Nanchang, China
| | - Fanrong Ai
- School of Mechatronics Engineering, Nanchang University, Nanchang, China.,Nanchang Municipal Key Laboratory of 3D Bioprinting Technology and Equipment, Nanchang, China
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