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Kapat K, Gondane P, Kumbhakarn S, Takle S, Sable R. Challenges and Opportunities in Developing Tracheal Substitutes for the Recovery of Long-Segment Defects. Macromol Biosci 2024:e2400054. [PMID: 39008817 DOI: 10.1002/mabi.202400054] [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: 02/08/2024] [Revised: 06/21/2024] [Indexed: 07/17/2024]
Abstract
Tracheal resection and reconstruction procedures are necessary when stenosis, tracheomalacia, tumors, vascular lesions, or tracheal injury cause a tracheal blockage. Replacement with a tracheal substitute is often recommended when the trauma exceeds 50% of the total length of the trachea in adults and 30% in children. Recently, tissue engineering and other advanced techniques have shown promise in fabricating biocompatible tracheal substitutes with physical, morphological, biomechanical, and biological characteristics similar to native trachea. Different polymers and biometals are explored. Even with limited success with tissue-engineered grafts in clinical settings, complete healing of tracheal defects remains a substantial challenge due to low mechanical strength and durability of the graft materials, inadequate re-epithelialization and vascularization, and restenosis. This review has covered a range of reconstructive and regenerative techniques, design criteria, the use of bioprostheses and synthetic grafts for the recovery of tracheal defects, as well as the traditional and cutting-edge methods of their fabrication, surface modification for increased immuno- or biocompatibility, and associated challenges.
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Affiliation(s)
- Kausik Kapat
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research Kolkata, 168, Maniktala Main Road, Kankurgachi, Kolkata, West Bengal, 700054, India
| | - Prashil Gondane
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research Kolkata, 168, Maniktala Main Road, Kankurgachi, Kolkata, West Bengal, 700054, India
| | - Sakshi Kumbhakarn
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research Kolkata, 168, Maniktala Main Road, Kankurgachi, Kolkata, West Bengal, 700054, India
| | - Shruti Takle
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research Kolkata, 168, Maniktala Main Road, Kankurgachi, Kolkata, West Bengal, 700054, India
| | - Rahul Sable
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research Kolkata, 168, Maniktala Main Road, Kankurgachi, Kolkata, West Bengal, 700054, India
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Komatsu K, Matsuura T, Cheng J, Kido D, Park W, Ogawa T. Nanofeatured surfaces in dental implants: contemporary insights and impending challenges. Int J Implant Dent 2024; 10:34. [PMID: 38963524 PMCID: PMC11224214 DOI: 10.1186/s40729-024-00550-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Accepted: 05/27/2024] [Indexed: 07/05/2024] Open
Abstract
Dental implant therapy, established as standard-of-care nearly three decades ago with the advent of microrough titanium surfaces, revolutionized clinical outcomes through enhanced osseointegration. However, despite this pivotal advancement, challenges persist, including prolonged healing times, restricted clinical indications, plateauing success rates, and a notable incidence of peri-implantitis. This review explores the biological merits and constraints of microrough surfaces and evaluates the current landscape of nanofeatured dental implant surfaces, aiming to illuminate strategies for addressing existing impediments in implant therapy. Currently available nanofeatured dental implants incorporated nano-structures onto their predecessor microrough surfaces. While nanofeature integration into microrough surfaces demonstrates potential for enhancing early-stage osseointegration, it falls short of surpassing its predecessors in terms of osseointegration capacity. This discrepancy may be attributed, in part, to the inherent "dichotomy kinetics" of osteoblasts, wherein increased surface roughness by nanofeatures enhances osteoblast differentiation but concomitantly impedes cell attachment and proliferation. We also showcase a controllable, hybrid micro-nano titanium model surface and contrast it with commercially-available nanofeatured surfaces. Unlike the commercial nanofeatured surfaces, the controllable micro-nano hybrid surface exhibits superior potential for enhancing both cell differentiation and proliferation. Hence, present nanofeatured dental implants represent an evolutionary step from conventional microrough implants, yet they presently lack transformative capacity to surmount existing limitations. Further research and development endeavors are imperative to devise optimized surfaces rooted in fundamental science, thereby propelling technological progress in the field.
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Affiliation(s)
- Keiji Komatsu
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, USA
| | - Takanori Matsuura
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, USA
| | - James Cheng
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, USA
- Division of Regenerative and Reconstructive Sciences, UCLA School of Dentistry, Los Angeles, USA
- Section of Periodontics, UCLA School of Dentistry, Los Angeles, USA
| | - Daisuke Kido
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, USA
| | - Wonhee Park
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, USA
- Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Takahiro Ogawa
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, USA.
- Division of Regenerative and Reconstructive Sciences, UCLA School of Dentistry, Los Angeles, USA.
- Weintraub Center for Reconstructive Biotechnology, Division of Regenerative and Reconstructive Sciences, UCLA School of Dentistry, 10833 Le Conte Avenue B3-087, Box951668, Los Angeles, CA, 90095-1668, USA.
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3
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Lima JHCD, Robbs PCM, Tude EMO, De Aza PN, Costa EMD, Scarano A, Prados-Frutos JC, Fernandes GVO, Gehrke SA. Fibroblasts and osteoblasts behavior after contact with different titanium surfaces used as implant abutment: An in vitro experimental study. Heliyon 2024; 10:e25038. [PMID: 38322837 PMCID: PMC10844044 DOI: 10.1016/j.heliyon.2024.e25038] [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: 05/04/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 02/08/2024] Open
Abstract
Background The goal of this in vitro study was to compare three different surfaces: two types of implant surfaces commercially available ([a] smooth/machined and [b] acid-treated surface) versus (c) anodized surface. Discs were manufactured with commercially pure titanium (CP) grade IV, which were subsequently analyzed by scanning microscopy and fibroblastic and osteoblastic cell cultures. Methods Ninety-nine discs (5 × 2 mm) were manufactured in titanium grade IV and received different surface treatments: (i) Mach group: machined; (ii) AA group: double acid etch; and (iii) AN group: anodizing treatment. Three discs from each group were analyzed by Scanning Electron Microscopy (SEM) to obtain surface topography images and qualitatively analyzed by EDS. Balb/c 3T3 fibroblasts and pre-osteoblastic cells (MC3T3-E1 lineage) were used to investigate each group's biological response (n = 10/cellular type). The data were compared statistically using the ANOVA one-way test, considered as a statistically significant difference p < 0.05. Results The AA group had numerous micropores with diameters between 5 and 10 μm, while nanopores between 1 and 5 nm were measured in the AN group. The EDX spectrum showed a high titanium concentration in all the analyzed samples. The contact angle and wetting tension were higher in the AA, whereas similar results were observed for the other groups. A lower result was observed for base width in the AA, which was higher in the other two groups. The AN showed the best values in the fibroblast cells, followed by Mach and AA; whereas, in the culture of the MC3T3 cells, the result was precisely the opposite (AA > Mach > AN). There was similar behavior for cell adhesion for the test groups (Mach and AN), with greater adhesion of Balb/c 3T3 fibroblasts compared to MC3T3 cells; in the AA group, there was greater adherence for MC3T3 cells compared to Balb/c 3T3 fibroblasts. Conclusions The findings suggest that different surface characteristics can produce different biological responses, possibly cell-line dependent. These findings have important implications for the design of implantable medical devices, where the surface characteristics can significantly impact its biocompatibility.
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Affiliation(s)
| | | | | | - Piedad N. De Aza
- Instituto de Bioingenieria, Universidad Miguel Hernández, Elche, Alicante, Spain
| | - Eleani Maria da Costa
- Department of Materials Engineering, Pontificial Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Antonio Scarano
- Department of Innovative Technologies in Medicine & Dentistry, University of Chieti-Pescara, 66100, Chieti, Italy
| | - Juan Carlos Prados-Frutos
- Department of Medicine and Surgery, Faculty of Health Sciences, Rey Juan Carlos University, Madrid, Spain
| | | | - Sergio Alexandre Gehrke
- Instituto de Bioingenieria, Universidad Miguel Hernández, Elche, Alicante, Spain
- Department of Materials Engineering, Pontificial Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
- Department of Biotechnology, Universidad Católica de Murcia (UCAM), Murcia, Spain
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Elvitigala KCML, Mubarok W, Sakai S. Tuning the crosslinking and degradation of hyaluronic acid/gelatin hydrogels using hydrogen peroxide for muscle cell sheet fabrication. SOFT MATTER 2023; 19:5880-5887. [PMID: 37439099 DOI: 10.1039/d3sm00560g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Cell sheets have immense potential for medical and pharmaceutical applications including tissue regeneration, drug testing, and disease modelling. In this study, composite hydrogels were prepared from a mixture of phenolated hyaluronic acid (HA-Ph) and gelatin (Gelatin-Ph), with a controlled degree of polymer crosslinking and degradation, to fabricate muscle cell sheets from myoblasts. These hydrogels were obtained via hydrogen peroxide (H2O2)-mediated crosslinking catalysed by horseradish peroxidase (HRP) and peroxide-mediated cleavage of the polymer chains. The degrees of crosslinking and degradation were modulated by altering the exposure time to air containing H2O2. The results showed that exposing a solution of 2% w/v HA-Ph, 0.75% w/v Gelatin-Ph, and 1 unit mL-1 HRP to air with 16 ppm H2O2 for 60 min yielded a stiffer hydrogel (7.16 kPa Young's modulus) than exposure times of 15 min (0.46 kPa) and 120 min (3.98 kPa). Moreover, mouse myoblast C2C12 cells cultured on a stiff hydrogel and induced to undergo myogenic differentiation formed longer and higher-density myotubes than those on softer hydrogels. The cell sheets were readily detached within 5 min by immersing the HA-Ph/Gelatin-Ph hydrogels covered with a monolayer of cells in a medium containing hyaluronidase. Our findings demonstrate that composite hydrogels with properties tuned by controlling the exposure time to H2O2, show great promise as platforms for muscle cell sheet fabrication.
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Affiliation(s)
| | - Wildan Mubarok
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan.
| | - Shinji Sakai
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan.
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5
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Fröschen FS, Wirtz DC, Schildberg FA. [Physiological reactions in the interface between cementless implants and bone]. ORTHOPADIE (HEIDELBERG, GERMANY) 2023; 52:178-185. [PMID: 36749380 DOI: 10.1007/s00132-023-04347-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/12/2023] [Indexed: 02/08/2023]
Abstract
BACKGROUND Surgical treatment of patients with osteoarthritis of the hip and persisting symptoms under conservative therapy has become increasingly important against the background of an aging population. OBJECTIVES What are the physiological reactions in the interface between cementless implants and bone? METHODS The literature is reviewed, expert opinions and animal models are analyzed and discussed. RESULTS Surface coating of implants with hydroxyapatite or titanium can have positive effects on osteointegration. Additional local application of mediators might be beneficial for osteointegration in the future. CONCLUSION Early peri-implant bone healing directly after implantation and late remodeling of the bone-implant interface are essential for secondary implant stability.
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Affiliation(s)
- Frank Sebastian Fröschen
- Klinik für Orthopädie und Unfallchirurgie, Universitätsklinikum Bonn, Venusberg-Campus 1, 53127, Bonn, Deutschland.
| | - Dieter Christian Wirtz
- Klinik für Orthopädie und Unfallchirurgie, Universitätsklinikum Bonn, Venusberg-Campus 1, 53127, Bonn, Deutschland
| | - Frank Alexander Schildberg
- Klinik für Orthopädie und Unfallchirurgie, Universitätsklinikum Bonn, Venusberg-Campus 1, 53127, Bonn, Deutschland
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Ozkan A, Çakır DA, Tezel H, Sanajou S, Yirun A, Baydar T, Erkekoglu P. Dental Implants and Implant Coatings: A Focus on Their Toxicity and Safety. J Environ Pathol Toxicol Oncol 2023; 42:31-48. [PMID: 36749088 DOI: 10.1615/jenvironpatholtoxicoloncol.2022043467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Dental implants are medical devices that are surgically inserted into the patient's jawbone by an orthodontist to act as roots of missing teeth. After the implantation, the maxilla or mandible integrates with the surface of the dental implant. This process, called "osseointegration," is an important period to ensure the long-term use of dental implants and prevent implant failures. Metal implants are the most used implant materials. However, they have disadvantages such as corrosion, metal ion release from metal implant surfaces and associated toxicity. To avoid these adverse effects and improve osseointegration, alternative dental implant materials such as ceramics, polymers, composites, and novel surface modification technologies have been developed. The safety of these materials are also of concern for toxicologists. This review will give general information about dental implant materials, osseointegration and successful implantation process. Moreover, we will focus on the new surface coatings materials for of dental implants and their toxicity and safety concerns will be discussed.
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Affiliation(s)
- Atakan Ozkan
- TOBB University of Economics and Technology, Faculty of Engineering, Department of Biomedical Engineering, Ankara, Turkey
| | - Deniz Arca Çakır
- Hacettepe University Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Ankara, Turkey; Hacettepe University Vaccine Institute, Department of Vaccinology, Ankara, Turkey
| | - Hülya Tezel
- Hacettepe University Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Ankara, Turkey
| | - Sonia Sanajou
- Hacettepe University Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Ankara, Turkey
| | - Anil Yirun
- Hacettepe University, Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Sıhhiye 06100, Ankara, Turkey; Çukurova University, Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Adana, Turkey
| | - Terken Baydar
- Hacettepe University Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Ankara, Turkey
| | - Pinar Erkekoglu
- Hacettepe University, Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Sıhhiye 06100, Ankara, Turkey; Hacettepe University Vaccine Institute, Department of Vaccinology, Ankara, Turkey
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7
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Ji MK, Lee SK, Kim HS, Oh GJ, Cho H, Lim HP. Assessment of Inhibition of Biofilm Formation on Non-Thermal Plasma-Treated TiO 2 Nanotubes. Int J Mol Sci 2023; 24:ijms24043335. [PMID: 36834746 PMCID: PMC9967395 DOI: 10.3390/ijms24043335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/10/2023] Open
Abstract
Peri-implantitis is an inflammatory disease similar to periodontitis, caused by biofilms formed on the surface of dental implants. This inflammation can spread to bone tissues and result in bone loss. Therefore, it is essential to inhibit the formation of biofilms on the surface of dental implants. Thus, this study examined the inhibition of biofilm formation by treating TiO2 nanotubes with heat and plasma. Commercially pure titanium specimens were anodized to form TiO2 nanotubes. Heat treatment was performed at 400 and 600 °C, and atmospheric pressure plasma was applied using a plasma generator (PGS-200, Expantech, Suwon, Republic of Korea). Contact angles, surface roughness, surface structure, crystal structure, and chemical compositions were measured to analyze the surface properties of the specimens. The inhibition of biofilm formation was assessed using two methods. The results of this study showed that the heat treatment of TiO2 nanotubes at 400 °C inhibited the adhesion of Streptococcus mutans (S. mutans), associated with initial biofilm formation, and that heat treatment of TiO2 nanotubes at 600 °C inhibited the adhesion of Porphyromonas gingivalis (P. gingivalis), which causes peri-implantitis. Applying plasma to the TiO2 nanotubes heat-treated at 600 °C inhibited the adhesion of S. mutans and P. gingivalis.
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Affiliation(s)
- Min-Kyung Ji
- Dental 4D Research Center, Chonnam National University, 33 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
| | - Seon-Ki Lee
- Department of Prosthodontics, Daejeon Dental Hospital, Wonkwang University, 77 Dunsan-ro, Seo-gu, Daejeon 35233, Republic of Korea
| | - Hee-Seon Kim
- Department of Prosthodontics, School of Dentistry, Chonnam National University, 33 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
| | - Gye-Jeong Oh
- Biomedical Evaluation & Research Center, Chonnam National University, 33 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
| | - Hoonsung Cho
- School of Materials Science & Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
- Correspondence: (H.C.); (H.-P.L.); Tel.:+82-62-530-1717 (H.C.); +82-62-530-5577 (H.-P.L.)
| | - Hyun-Pil Lim
- Department of Prosthodontics, School of Dentistry, Chonnam National University, 33 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
- Correspondence: (H.C.); (H.-P.L.); Tel.:+82-62-530-1717 (H.C.); +82-62-530-5577 (H.-P.L.)
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The Influence of Patterned Surface Features on the Accumulation of Bovine Synovial Fluid-Induced Aggregates of Staphylococcus aureus. Appl Environ Microbiol 2022; 88:e0121722. [PMID: 36286507 PMCID: PMC9680626 DOI: 10.1128/aem.01217-22] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Periprosthetic joint infections occurring after joint replacement are a major clinical problem requiring repeated surgeries and antibiotic interventions.
Staphylococcus aureus
is the most prominent bacterium causing most implant-related infections.
S. aureus
can form a biofilm, which is defined as a group of attached bacteria with the formation of an envelope that is resistant to antibiotics. The attachment and retention of these bacteria on implant surfaces are not clearly understood.
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Chávez Díaz MP, Henche SA, Yanchuck MR, de Arriba CC, Sierra RC, Rincón MLE, Hallen JM. Implantation of heat treatment Ti6al4v alloys in femoral bone of Wistar rats. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2022; 33:70. [PMID: 36190567 PMCID: PMC9529715 DOI: 10.1007/s10856-022-06691-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 08/24/2022] [Indexed: 06/16/2023]
Abstract
Two heat treatments were carried out at below (Ti6Al4V800) and above (Ti6Al4V1050) the beta-phase transformation temperature (TTRANSUS = 980 °C), to study the effect of microstructural changes on osseointegration. The alloys were implanted in the femurs of hind legs of Wistar rats for 15, 30, and 60 days. Histology of the femur sections obtained for the first 15 days showed inflammatory tissue surrounding the implants and tissue contraction, which prevented osseointegration in early stages. After 30 days, trabecular bone, reduction of inflammatory tissue around the implants, and osseointegration were observed in Ti6Al4V as received and Ti6Al4V1050 alloys, while osseointegration was detected for the three alloys after 60 days. These results were supported through morphometric studies based on the analysis of Bone Implant Contact (BIC), where there was a larger bone contact after 60 days for the Ti6Al4V1050 alloy; indicating that microstructural features of the Ti6Al4V alloys influence their osseointegration, with the lamellar microstructure (Ti6Al4V1050), being the most responsive. Graphical abstract.
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Affiliation(s)
- Mercedes Paulina Chávez Díaz
- Centro de Estudios Científicos y Tecnológicos Número 7 Cuauhtémoc (CECyT 7), Ermita Iztapalapa 3241, Sta. María Aztahuacan, Iztapalapa, Ciudad de México, 09570, Mexico.
- Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC). Departamento de Ingeniería de Superficies, Corrosión y Durabilidad, 28040, Madrid, Spain.
| | - Soledad Aguado Henche
- Departamento de Cirugía, Ciencias Médicas y Sociales. Área Anatomía y Embriología Humana de la Facultad de Medicina, Universidad de Alcalá (UAH), Ctra. Mad-Barc Km 33,600. Campus Universitario, Alcalá de Henares, 28805, Madrid, Spain
| | - Mónica Rubio Yanchuck
- Hospital Universitario La Paz. Servicio de Cirugía Plástica, Reparadora y Quemados, Paseo de la Castellana 261, 28046, Madrid, Spain
| | - Celia Clemente de Arriba
- Departamento de Cirugía, Ciencias Médicas y Sociales. Área Anatomía y Embriología Humana de la Facultad de Medicina, Universidad de Alcalá (UAH), Ctra. Mad-Barc Km 33,600. Campus Universitario, Alcalá de Henares, 28805, Madrid, Spain
| | - Román Cabrera Sierra
- Departamento de Ingeniería Química Industrial y Metalurgia y Materiales, UPALM Edificio 7, Instituto Politécnico Nacional, Ciudad de México, 07738, Mexico
| | - María Lorenza Escudero Rincón
- Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC). Departamento de Ingeniería de Superficies, Corrosión y Durabilidad, 28040, Madrid, Spain
| | - José M Hallen
- Departamento de Ingeniería Química Industrial y Metalurgia y Materiales, UPALM Edificio 7, Instituto Politécnico Nacional, Ciudad de México, 07738, Mexico
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Effects of Different Titanium Surface Treatments on Adhesion, Proliferation and Differentiation of Bone Cells: An In Vitro Study. J Funct Biomater 2022; 13:jfb13030143. [PMID: 36135578 PMCID: PMC9503392 DOI: 10.3390/jfb13030143] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 11/17/2022] Open
Abstract
The objective of this study was to evaluate the impacts of different sandblasting procedures in acid etching of Ti6Al4V surfaces on osteoblast cell behavior, regarding various physicochemical and topographical parameters. Furthermore, differences in osteoblast cell behavior between cpTi and Ti6Al4V SA surfaces were evaluated. Sandblasting and subsequent acid etching of cpTi and Ti6Al4V discs was performed with Al2O3 grains of different sizes and with varying blasting pressures. The micro- and nano-roughness of the experimental SA surfaces were analyzed via confocal, atomic force and scanning electron microscopy. Surface free energy and friction coefficients were determined. hFOB 1.19 cells were seeded to evaluate adhesion, proliferation and osteoblastic differentiation for up to 12 d via crystal violet assays, MTT assays, ALP activity assays and Alizarin Red staining assays. Differences in blasting procedures had significant impacts on surface macro- and micro-topography. The crystal violet assay revealed a significant inverse relationship between blasting grain size and hFOB cell growth after 7 days. This trend was also visible in the Alizarin Red assays staining after 12 d: there was significantly higher biomineralization visible in the group that was sandblasted with smaller grains (F180) when compared to standard-grain-size groups (F70). SA samples treated with reduced blasting pressure exhibited lower hFOB adhesion and growth capabilities at initial (2 h) and later time points for up to 7 days, when compared to the standard SA surface, even though micro-roughness and other relevant surface parameters were similar. Overall, etched-only surfaces consistently exhibited equivalent or higher adhesion, proliferation and differentiation capabilities when compared to all other sandblasted and etched surfaces. No differences were found between cpTi and Ti6Al4V SA surfaces. Subtle modifications in the blasting protocol for Ti6Al4V SA surfaces significantly affect the proliferative and differentiation behavior of human osteoblasts. Surface roughness parameters are not sufficient to predict osteoblast behavior on etched Ti6Al4V surfaces.
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11
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Osman MA, Alamoush RA, Kushnerev E, Seymour KG, Watts DC, Yates JM. Biological response of epithelial and connective tissue cells to titanium surfaces with different ranges of roughness: An in-vitro study. Dent Mater 2022; 38:1777-1788. [DOI: 10.1016/j.dental.2022.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/22/2022] [Accepted: 09/22/2022] [Indexed: 11/16/2022]
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12
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In-Vitro Phenotypic Response of Human Osteoblasts to Different Degrees of Titanium Surface Roughness. Dent J (Basel) 2022; 10:dj10080140. [PMID: 36005238 PMCID: PMC9406766 DOI: 10.3390/dj10080140] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/14/2022] [Accepted: 07/27/2022] [Indexed: 11/30/2022] Open
Abstract
Objectives: This study aimed to investigate human osteoblast (HOB) responses towards different degrees of titanium (Ti) implant surface roughness. Methods: Four degrees of Ti surface roughness were investigated on a micrometer roughness scale: smooth (S: 0.08−0.1 µm), minimally rough (MM: 0.3−0.5 µm), moderately rough (MR: 1.2−1.4 µm), and rough (R: 3.3−3.7 µm). HOB cells were cultured, expanded, and maintained according to the supplier’s protocol. Cell proliferation and cytotoxicity were assessed at day 1, 3, 5, and 10 using alamarBlue and lactate dehydrogenase colorimetric assays. Data were analyzed with one-way ANOVA, two-way ANOVA, and Tukey’s post hoc test (p = 0.05 for all tests). Results: There was no significant difference in the cell proliferation or cytotoxicity of the HOB cells in contact with the different degrees of Ti surface roughness. There was, however, a significant time effect on cell proliferation (p < 0.0001) with different exposure durations for each roughness degree. Furthermore, a positive correlation (non-significant) between proliferation and cytotoxicity was observed for all investigated degrees of surface roughness. Conclusion: All investigated roughness degrees showed comparable HOB proliferation, with the MR surface presenting the highest percentage, followed by the R, MM, ad S, surfaces, respectively. The S surface showed the highest cytotoxic effect on HOBs; however, it did not reach the cytotoxic level suggested by the ISO for any medical device to be considered cytotoxic.
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Noorollahian S, Kachuie M, Hatamzade Z, Moghadam M, Narimani T. The antimicrobial effect of doxycycline and doped ZnO in TiO 2 nanotubes synthesized on the surface of orthodontic mini-implants. APOS TRENDS IN ORTHODONTICS 2022. [DOI: 10.25259/apos_14_2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Objectives:
Anchorage preservation is crucial in orthodontic treatment success. Mini-implants make a revolution in this domain. The failure of orthodontic mini-implants due to inflammation and infection is one of the reasons for anchorage loss. The purpose of this study was to evaluate the effect of a novel mini-implant surface modification to improve resistance against microbial contamination and surrounding tissue inflammation.
Material and Methods:
Twenty-four orthodontic mini-implants (Jeil Medical Corporation, Korea) with 1.6 mm diameter and 8 mm length were randomly divided into three groups: Group 1: Control group, Group 2: Nanotubes were made on the surface with anodisation, and Group 3: Zinc Oxide (ZnO) doped into nanotubes, and then doxycycline is added to them. The anti-bacterial efficacy against Porphyromonas gingivalis was evaluated using the disk diffusion method. To analyze data, Kruskal–Wallis, Friedman, and Wilcoxon tests were done. The significance level was set at 0.05.
Results:
No zone of the inhibition was formed in Groups 1 and 2. In Group 3, the mean (SD) diameter of the inhibition zone in the first 5-day to sixth 5-day were 38.7(8.2), 25(4.8), 17.8(5.6), 7.63(5.37), 1.5(2.83), and 0 millimeters, respectively.
Conclusion:
Nanotubes containing doped ZnO and Doxycycline are capable of preventing bacterial growth around the mini implant surfaces for at least up to 30 days. To manage inflammation of surrounding tissues of mini-implants, nanotubes are not effective alone. Therefore, the presence of diffusible materials in addition to nanotubes on the surface of mini-implants is necessary.
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Affiliation(s)
- Saeed Noorollahian
- Department of Orthodontics, Isfahan University of Medical Science, Isfahan, Iran,
| | - Marzie Kachuie
- Department of Orthodontics, Isfahan University of Medical Science, Isfahan, Iran,
| | - Zahra Hatamzade
- Department of Orthodontics, Isfahan University of Medical Science, Isfahan, Iran,
| | - Majid Moghadam
- Department of Chemistry, Isfahan University, Isfahan, Iran,
| | - Tahmineh Narimani
- Department of Microbiology, Isfahan University of Medical Science, Isfahan, Iran,
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14
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Dubey A, Ghosh S, Jaiswal S, Roy P, Lahiri D. Assessment of protein adhesion behaviour and biocompatibility of magnesium/Co-substituted HA-based composites for orthopaedic application. Int J Biol Macromol 2022; 208:707-719. [PMID: 35364196 DOI: 10.1016/j.ijbiomac.2022.03.166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 03/23/2022] [Accepted: 03/25/2022] [Indexed: 11/18/2022]
Abstract
Protein adsorption has a great influence on Mg-based metallic implants, which affects cell attachment and cell growth. Adsorption of the proteins (via electrostatic interaction, hydrophobic/hydrophilic, and hydrogen-bonding) on the implant surface is greatly influenced by the surface chemistry of the implant. Hydroxyapatite (HA) is a class of CaP ceramic, beneficial for protein adsorption as it possesses Ca2+ and PO43- in it, which are believed to be the protein binding sites on the HA surface. Moreover, HA is the popular choice for reinforcement in the magnesium matrix owing to its similarity with bone mineral composition. However, negligible interaction between HA and Mg particles during sintering is the major limitation for frequent usage of Mg-HA implants. Doping of HA with Mg2+ and Zn2+ (CoHA) ions leads to its chemistry similar to natural apatite in human bone and facilitates comparatively better bonding with the MgZn matrix. This study mainly aims to delve into the protein adsorption behaviour of Magnesium/Co-substituted HA-based Composites (M3Z-CoHA) along with their biocompatibility. Qualitative and quantitative protein adsorption analysis shows that the addition of 15 wt% CoHA to Mg matrix enhanced protein adsorption by ~60% and renders cell viability >90% after day 1, supporting cellular growth and proliferation. The implants also initiated osteogenic differentiation of the cells after day 7. The leached-out products from all the composites showed no toxicity. The morphology of the cells in all the composites was found as healthy as the control cells. Overall, the composite with 15 wt% HA reinforcement (M3Z-15CoHA) has shown favourable protein adsorption behaviour and cytocompatibility.
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Affiliation(s)
- Anshu Dubey
- Biomaterials and Multiscale Mechanics Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Uttarakhand 247667, India
| | - Souvik Ghosh
- Biomaterials and Multiscale Mechanics Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Uttarakhand 247667, India; Molecular Endocrinology Lab, Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Uttarakhand 247667, India
| | - Satish Jaiswal
- Biomaterials and Multiscale Mechanics Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Uttarakhand 247667, India
| | - Partha Roy
- Molecular Endocrinology Lab, Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Uttarakhand 247667, India
| | - Debrupa Lahiri
- Biomaterials and Multiscale Mechanics Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Uttarakhand 247667, India.
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15
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Nugud A, Alghfeli L, Elmasry M, El-Serafi I, El-Serafi AT. Biomaterials as a Vital Frontier for Stem Cell-Based Tissue Regeneration. Front Cell Dev Biol 2022; 10:713934. [PMID: 35399531 PMCID: PMC8987776 DOI: 10.3389/fcell.2022.713934] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 03/11/2022] [Indexed: 01/01/2023] Open
Abstract
Biomaterials and tissue regeneration represent two fields of intense research and rapid advancement. Their combination allowed the utilization of the different characteristics of biomaterials to enhance the expansion of stem cells or their differentiation into various lineages. Furthermore, the use of biomaterials in tissue regeneration would help in the creation of larger tissue constructs that can allow for significant clinical application. Several studies investigated the role of one or more biomaterial on stem cell characteristics or their differentiation potential into a certain target. In order to achieve real advancement in the field of stem cell-based tissue regeneration, a careful analysis of the currently published information is critically needed. This review describes the fundamental description of biomaterials as well as their classification according to their source, bioactivity and different biological effects. The effect of different biomaterials on stem cell expansion and differentiation into the primarily studied lineages was further discussed. In conclusion, biomaterials should be considered as an essential component of stem cell differentiation strategies. An intense investigation is still required. Establishing a consortium of stem cell biologists and biomaterial developers would help in a systematic development of this field.
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Affiliation(s)
- Ahmed Nugud
- Pediatric Department, Aljalila Children Hospital, Dubai, United Arab Emirates
| | - Latifa Alghfeli
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah, United Arab Emirates
| | - Moustafa Elmasry
- Department of Biomedical and Clinical Sciences (BKV), Linköping University, Linköping, Sweden
- Department of Hand Surgery and Plastic Surgery and Burns, Linköping University Hospital, Linköping, Sweden
| | - Ibrahim El-Serafi
- Department of Hand Surgery and Plastic Surgery and Burns, Linköping University Hospital, Linköping, Sweden
- Basic Medical Sciences Department, College of Medicine, Ajman University, Ajman, United Arab Emirates
| | - Ahmed T. El-Serafi
- Department of Biomedical and Clinical Sciences (BKV), Linköping University, Linköping, Sweden
- Department of Hand Surgery and Plastic Surgery and Burns, Linköping University Hospital, Linköping, Sweden
- *Correspondence: Ahmed T. El-Serafi,
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16
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Liu Q, Xie S, Fan D, Xie T, Xue G, Gou X, Li X. Integrated osteochondral differentiation of mesenchymal stem cells on biomimetic nanofibrous mats with cell adhesion-generated piezopotential gradients. NANOSCALE 2022; 14:3865-3877. [PMID: 35201252 DOI: 10.1039/d1nr06676e] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Biomimetic piezoelectric scaffolds provide a noninvasive method for in vivo cell regulation and tissue regeneration. Herein, considering the gradually varied piezoelectric properties of native cartilage and bone tissues, we fabricated biomimetic electrospun poly(L-lactic acid) (PLLA) nanofibrous mats with gradient piezoelectric properties to induce the integrated osteochondral differentiation of rat mesenchymal stem cells (MSCs). Nanofibrous mats are polarized under electric fields with linear variation of strength to generate gradient piezoelectricity, and cell adhesion-derived contraction forces could produce gradient piezoelectric potential on the scaffolds. Our results demonstrated that the piezoelectric potential could positively modulate cell adhesion, intracellular calcium transients, Ca2+ binding proteins, and differentiation-related genes. In addition, the differentiation of MSCs into osteogenic and chondrogenic lineages was integrated on a single scaffold at different areas with relatively high and low piezoelectricity values, respectively. The continuous gradient scaffold exhibited the potential to provide a smooth transition between the cartilage and bone, offering new insights to probe the regeneration mechanisms of the osteochondral tissue in a single scaffold and inspiring a future efficient and rational design of piezoelectric smart biomaterials for tissue engineering.
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Affiliation(s)
- Qingjie Liu
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China.
| | - Shuang Xie
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China.
| | - Duan Fan
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, PR China
| | - Tianpeng Xie
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China.
| | - Guilan Xue
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China.
| | - Xue Gou
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China.
| | - Xiaohong Li
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China.
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17
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Zwicker P, Schmidt T, Hornschuh M, Lode H, Kramer A, Müller G. In vitro response of THP-1 derived macrophages to antimicrobially effective PHMB-coated Ti6Al4V alloy implant material with and without contamination with S. epidermidis and P. aeruginosa. Biomater Res 2022; 26:1. [PMID: 35000621 PMCID: PMC8744236 DOI: 10.1186/s40824-021-00247-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 12/05/2021] [Indexed: 12/23/2022] Open
Abstract
AIM Periprosthetic joint infections are a devastating complication after arthroplasty, leading to rejection of the prosthesis. The prevention of septic loosening may be possible by an antimicrobial coating of the implant surface. Poly (hexamethylene) biguanide hydrochloride [PHMB] seems to be a suitable antiseptic agent for this purpose since previous studies revealed a low cytotoxicity and a long-lasting microbicidal effect of Ti6Al4V alloy coated with PHMB. To preclude an excessive activation of the immune system, possible inflammatory effects on macrophages upon contact with PHMB-coated surfaces alone and after killing of S. epidermidis and P. aeruginosa are analyzed. METHODS THP-1 monocytes were differentiated to M0 macrophages by phorbol 12-myristate 13-acetate and seeded onto Ti6Al4V surfaces coated with various amounts of PHMB. Next to microscopic immunofluorescence analysis of labeled macrophages after adhesion on the coated surface, measurement of intracellular reactive oxygen species and analysis of cytokine secretion at different time points without and with previous bacterial contamination were conducted. RESULTS No influence on morphology of macrophages and only slight increases in iROS generation were detected. The cytokine secretion pattern depends on the surface treatment procedure and the amount of adsorbed PHMB. The PHMB coating resulted in a high reduction of viable bacteria, resulting in no significant differences in cytokine secretion as reaction to coated surfaces with and without bacterial burden. CONCLUSION Ti6Al4V specimens after alkaline treatment followed by coating with 5-7 μg PHMB and specimens treated with H2O2 before PHMB-coating (4 μg) had the smallest influence on the macrophage phienotype and thus are considered as the surface with the best cytocompatibility to macrophages tested in the present study.
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Affiliation(s)
- Paula Zwicker
- Institute of Hygiene and Environmental Medicine, Ferdinand-Sauerbruch-Str., University Medicine, D-17475, Greifswald, Germany.
| | - Thomas Schmidt
- Institute of Hygiene and Environmental Medicine, Ferdinand-Sauerbruch-Str., University Medicine, D-17475, Greifswald, Germany
| | - Melanie Hornschuh
- Institute of Hygiene and Environmental Medicine, Ferdinand-Sauerbruch-Str., University Medicine, D-17475, Greifswald, Germany
| | - Holger Lode
- Department of Pediatric Hematology and Oncology, Ferdinand-Sauerbruch-Str., University Medicine, D-17475, Greifswald, Germany
| | - Axel Kramer
- Institute of Hygiene and Environmental Medicine, Ferdinand-Sauerbruch-Str., University Medicine, D-17475, Greifswald, Germany
| | - Gerald Müller
- Institute of Hygiene and Environmental Medicine, Ferdinand-Sauerbruch-Str., University Medicine, D-17475, Greifswald, Germany
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18
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Husain F, Gupta S, Sood S, Bhaskar N, Jain A. To evaluate the effect of anodized dental implant surface on cumulative implant survival and success. A systematic review and meta-analysis. J Indian Soc Periodontol 2022; 26:525-532. [PMID: 36582952 PMCID: PMC9793921 DOI: 10.4103/jisp.jisp_797_20] [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: 12/16/2020] [Revised: 06/20/2021] [Accepted: 01/09/2022] [Indexed: 12/12/2022] Open
Abstract
Background There have been certain apprehensions regarding the use of surface-modified dental implants due to peri-implant infection and crestal bone loss over the years. Thus, this review aims to evaluate the long-term effect of anodized implant surface on cumulative implant survival (CSR) and success rates in relation to marginal bone loss (MBL). Materials and Methods Systematic electronic search was done using two databases, PubMed and Embase to assess the potentially relevant records from January 2008 to October 2019. Publications reporting cumulative survival and success rates with anodized dental implants were identified. Screening for duplicate articles and extraction of data was carried out to formulate evidence tables. Meta-analysis was conducted following PRISMA guidelines. Results Out of 217 observational clinical studies, 8 studies were selected based on predefined selection criteria. The summary estimate for the included studies for CSR was reported as 0.98 (95% confidence interval [CI]: 0.96; 0.99). The heterogeneity (I2 = 37.3%) among these studies was found to be statistically nonsignificant (P = 0.1314). The mean values of MBL after the implant insertion were 0.84 mm at 0-1 year and 1.05mm by the end of follow-up period. This data were provided by five studies only. The mean difference of the analyzed studies came out to be 0.49 mm with a 95% CI (-0.22; 1.19). The heterogeneity (I 2 = 97%) for these studies was statistically significant with P < 0.01. Conclusion The anodized dental implants have demonstrated long-term survival and success rates in terms of clinical outcomes.
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Affiliation(s)
- Firasat Husain
- Department of Periodontics, Dr. Harvansh Singh Judge Institute of Dental Sciences and Hospital, Panjab University, Chandigarh, India
| | - Shipra Gupta
- Oral Health Sciences Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Shaveta Sood
- Department of Periodontics, Dr. Harvansh Singh Judge Institute of Dental Sciences and Hospital, Panjab University, Chandigarh, India
| | - Nandini Bhaskar
- Department of Periodontics, Dr. Harvansh Singh Judge Institute of Dental Sciences and Hospital, Panjab University, Chandigarh, India
| | - Ashish Jain
- Deparment of Dental, Dental Institute, RIMS, Bariatu, Ranchi, India,Address for correspondence: Dr. Ashish Jain, Department of Periodontics, Dr. Harvansh Singh Judge Institute of Dental Sciences and Hospital, Panjab University, Chandigarh, India. E-mail:
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19
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Stich T, Alagboso F, Křenek T, Kovářík T, Alt V, Docheva D. Implant-bone-interface: Reviewing the impact of titanium surface modifications on osteogenic processes in vitro and in vivo. Bioeng Transl Med 2022; 7:e10239. [PMID: 35079626 PMCID: PMC8780039 DOI: 10.1002/btm2.10239] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 06/08/2021] [Accepted: 06/13/2021] [Indexed: 12/12/2022] Open
Abstract
Titanium is commonly and successfully used in dental and orthopedic implants. However, patients still have to face the risk of implant failure due to various reasons, such as implant loosening or infection. The risk of implant loosening can be countered by optimizing the osteointegration capacity of implant materials. Implant surface modifications for structuring, roughening and biological activation in favor for osteogenic differentiation have been vastly studied. A key factor for a successful stable long-term integration is the initial cellular response to the implant material. Hence, cell-material interactions, which are dependent on the surface parameters, need to be considered in the implant design. Therefore, this review starts with an introduction to the basics of cell-material interactions as well as common surface modification techniques. Afterwards, recent research on the impact of osteogenic processes in vitro and vivo provoked by various surface modifications is reviewed and discussed, in order to give an update on currently applied and developing implant modification techniques for enhancing osteointegration.
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Affiliation(s)
- Theresia Stich
- Experimental Trauma Surgery, Department of Trauma SurgeryUniversity Regensburg Medical CentreRegensburgGermany
| | - Francisca Alagboso
- Experimental Trauma Surgery, Department of Trauma SurgeryUniversity Regensburg Medical CentreRegensburgGermany
| | - Tomáš Křenek
- New Technologies Research CentreUniversity of West BohemiaPilsenCzech Republic
| | - Tomáš Kovářík
- New Technologies Research CentreUniversity of West BohemiaPilsenCzech Republic
| | - Volker Alt
- Experimental Trauma Surgery, Department of Trauma SurgeryUniversity Regensburg Medical CentreRegensburgGermany
- Clinic and Polyclinic for Trauma Surgery, University Regensburg Medical CentreRegensburgGermany
| | - Denitsa Docheva
- Experimental Trauma Surgery, Department of Trauma SurgeryUniversity Regensburg Medical CentreRegensburgGermany
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20
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Dua R, Jones H, Noble PC. Evaluation of bone formation on orthopedic implant surfaces using an ex-vivo bone bioreactor system. Sci Rep 2021; 11:22509. [PMID: 34795368 PMCID: PMC8602619 DOI: 10.1038/s41598-021-02070-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 11/09/2021] [Indexed: 11/10/2022] Open
Abstract
Recent advances in materials and manufacturing processes have allowed the fabrication of intricate implant surfaces to facilitate bony attachment. However, refinement and evaluation of these new design strategies are hindered by the cost and complications of animal studies, particularly during early iterations in the development process. To address this problem, we have previously constructed and validated an ex-vivo bone bioreactor culture system that can maintain the viability of bone samples for an extended period ex-vivo. In this study, we investigated the mineralization of a titanium wire mesh scaffold under both static and dynamic culturing using our ex vivo bioreactor system. Thirty-six cancellous bone cores were harvested from bovine metatarsals at the time of slaughter and divided into five groups under the following conditions: Group 1) Isolated bone cores placed in static culture, Group 2) Unloaded bone cores placed in static culture in contact with a fiber-mesh metallic scaffold, Group 3) Bone cores placed in contact with a fiber-mesh metallic scaffold under the constant pressure of 150 kPa, Group 4) Bone core placed in contact with a fiber-mesh metallic scaffold and exposed to cyclic loading with continuous perfusion flow of media within the ex-vivo culture system and Group 5) Bone core evaluated on Day 0 to serve as a positive control for comparison with all other groups at weeks 4 and 7. Bone samples within Groups 1-4 were incubated for 4 and 7 weeks and then evaluated using histological examination (H&E) and the Live-Dead assay (Life Technologies). Matrix deposits on the metallic scaffolds were examined with scanning electron microscopy (SEM), while the chemical composition of the matrix was measured using energy-dispersive x-ray spectroscopy (EDX). We found that the viability of bone cores was maintained after seven weeks of loading in our ex vivo system. In addition, SEM images revealed crystallite-like structures on the dynamically loaded metal coupons (Group 4), corresponding to the initial stages of mineralization. EDX results further confirmed the presence of carbon at the interface and calcium phosphates in the matrix. We conclude that a bone bioreactor can be used as an alternate tool for in-vivo bone ingrowth studies of new implant surfaces or coatings.
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Affiliation(s)
- Rupak Dua
- Department of Chemical Engineering, School of Engineering and Technology, Hampton University, Hampton, VA, USA.
| | - Hugh Jones
- Center for Orthopaedic Research, Innovation and Training, McGovern Medical School, UTHealth, Houston, TX, USA
| | - Philip C Noble
- Center for Orthopaedic Research, Innovation and Training, McGovern Medical School, UTHealth, Houston, TX, USA
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21
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Shaikh MQ, Nath SD, Akilan AA, Khanjar S, Balla VK, Grant GT, Atre SV. Investigation of Patient-Specific Maxillofacial Implant Prototype Development by Metal Fused Filament Fabrication (MF 3) of Ti-6Al-4V. Dent J (Basel) 2021; 9:dj9100109. [PMID: 34677171 PMCID: PMC8534331 DOI: 10.3390/dj9100109] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 09/07/2021] [Accepted: 09/17/2021] [Indexed: 11/16/2022] Open
Abstract
Additive manufacturing (AM) and related digital technologies have enabled several advanced solutions in medicine and dentistry, in particular, the design and fabrication of patient-specific implants. In this study, the feasibility of metal fused filament fabrication (MF3) to manufacture patient-specific maxillofacial implants is investigated. Here, the design and fabrication of a maxillofacial implant prototype in Ti-6Al-4V using MF3 is reported for the first time. The cone-beam computed tomography (CBCT) image data of the patient’s oral anatomy was digitally processed to design a 3D CAD model of the hard tissue and fabricate a physical model by stereolithography (SLA). Using the digital and physical models, bone loss condition was analyzed, and a maxillofacial implant initial design was identified. Three-dimensional (3D) CAD models of the implant prototypes were designed that match the patient’s anatomy and dental implant requirement. In this preliminary stage, the CAD models of the prototypes were designed in a simplified form. MF3 printing of the prototypes was simulated to investigate potential deformation and residual stresses. The patient-specific implant prototypes were fabricated by MF3 printing followed by debinding and sintering using a support structure for the first time. MF3 printed green part dimensions fairly matched with simulation prediction. Sintered parts were characterized for surface integrity after cutting the support structures off. An overall 18 ± 2% shrinkage was observed in the sintered parts relative to the green parts. A relative density of 81 ± 4% indicated 19% total porosity including 11% open interconnected porosity in the sintered parts, which would favor bone healing and high osteointegration in the metallic implants. The surface roughness of Ra: 18 ± 5 µm and a Rockwell hardness of 6.5 ± 0.8 HRC were observed. The outcome of the work can be leveraged to further investigate the potential of MF3 to manufacture patient-specific custom implants out of Ti-6Al-4V.
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Affiliation(s)
- Mohammad Qasim Shaikh
- Materials Innovation Guild, University of Louisville, Louisville, KY 40208, USA; (M.Q.S.); (S.D.N.); (A.A.A.); (S.K.); (V.K.B.)
| | - Subrata Deb Nath
- Materials Innovation Guild, University of Louisville, Louisville, KY 40208, USA; (M.Q.S.); (S.D.N.); (A.A.A.); (S.K.); (V.K.B.)
| | - Arulselvan Arumugam Akilan
- Materials Innovation Guild, University of Louisville, Louisville, KY 40208, USA; (M.Q.S.); (S.D.N.); (A.A.A.); (S.K.); (V.K.B.)
| | - Saleh Khanjar
- Materials Innovation Guild, University of Louisville, Louisville, KY 40208, USA; (M.Q.S.); (S.D.N.); (A.A.A.); (S.K.); (V.K.B.)
| | - Vamsi Krishna Balla
- Materials Innovation Guild, University of Louisville, Louisville, KY 40208, USA; (M.Q.S.); (S.D.N.); (A.A.A.); (S.K.); (V.K.B.)
- Bioceramics and Coating Division, CSIR-Central Glass and Ceramic Research Institute, 196 Raja S.C. Mullick Road, Kolkata 700 032, India
| | | | - Sundar Vedanarayanan Atre
- Materials Innovation Guild, University of Louisville, Louisville, KY 40208, USA; (M.Q.S.); (S.D.N.); (A.A.A.); (S.K.); (V.K.B.)
- Correspondence:
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22
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Jurak M, Wiącek AE, Ładniak A, Przykaza K, Szafran K. What affects the biocompatibility of polymers? Adv Colloid Interface Sci 2021; 294:102451. [PMID: 34098385 DOI: 10.1016/j.cis.2021.102451] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 05/21/2021] [Accepted: 05/22/2021] [Indexed: 02/07/2023]
Abstract
In recent decades synthetic polymers have gained increasing popularity, and nowadays they are an integral part of people's daily lives. In addition, owing to their competitive advantage and being susceptible to modification, polymers have stimulated the fast development of innovative technologies in many areas of science. Biopolymers are of particular interest in various branches of medicine, such as implantology of bones, cartilage and skin tissues as well as blood vessels. Biomaterials with such specific applications must have appropriate mechanical and strength characteristics and above all they must be compatible with the surrounding tissues, human blood and its components, i.e. exhibit high hemo- and biocompatibility, low or no thrombo- and carcinogenicity, foreign body response (host response), appropriate osteoconduction, osteoinduction and mineralization. For biocompatibility improvement many surface treatment techniques have been utilized leading to fabricate the polymer biomaterials of required properties, also at nanoscale. This review paper discusses the most important physicochemical and biological factors that affect the biocompatibility, thus the reaction of the living organism after insertion of the polymer-based biomaterials, i.e. surface modification and/or degradation, surface composition (functional groups and charge), size and shapes, hydrophilic-hydrophobic character, wettability and surface free energy, topography (roughness, stiffness), crystalline and amorphous structure, nanostructure, cell adhesion and proliferation, cellular uptake. Particularly, the application of polysaccharides (chitosan, cellulose, starch) in the tissue engineering is emphasized.
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23
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Tilton M, Lewis GS, Hast MW, Fox E, Manogharan G. Additively manufactured patient-specific prosthesis for tumor reconstruction: Design, process, and properties. PLoS One 2021; 16:e0253786. [PMID: 34260623 PMCID: PMC8279401 DOI: 10.1371/journal.pone.0253786] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 06/12/2021] [Indexed: 01/20/2023] Open
Abstract
Design and processing capabilities of additive manufacturing (AM) to fabricate complex geometries continues to drive the adoption of AM for biomedical applications. In this study, a validated design methodology is presented to evaluate AM as an effective fabrication technique for reconstruction of large bone defects after tumor resection in pediatric oncology patients. Implanting off-the-shelf components in pediatric patients is especially challenging because most standard components are sized and shaped for more common adult cases. While currently reported efforts on AM implants are focused on maxillofacial, hip and knee reconstructions, there have been no reported studies on reconstruction of proximal humerus tumors. A case study of a 9-year-old diagnosed with proximal humerus osteosarcoma was used to develop a patient-specific AM prosthesis for the humerus following tumor resection. Commonly used body-centered cubic (BCC) structures were incorporated at the surgical neck and distal interface in order to increase the effective surface area, promote osseointegration, and reduce the implant weight. A patient-specific prosthesis was fabricated using electron beam melting method from biocompatible Ti-6Al-4V. Both computational and biomechanical tests were performed on the prosthesis to evaluate its biomechanical behavior under varying loading conditions. Morphological analysis of the construct using micro-computed tomography was used to compare the as-designed and as-built prosthesis. It was found that the patient-specific prosthesis could withstand physiologically-relevant loading conditions with minimal permanent deformation (82 μm after 105 cycles) at the medial aspect of the porous surgical neck. These outcomes support potential translation of the patient-specific AM prostheses to reconstruct large bone defects following tumor resection.
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Affiliation(s)
- Maryam Tilton
- Department of Mechanical Engineering, Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Gregory S. Lewis
- Department of Mechanical Engineering, Pennsylvania State University, University Park, Pennsylvania, United States of America
- Department of Orthopaedics and Rehabilitation, Pennsylvania State University, Hershey, Pennsylvania, United States of America
| | - Michael W. Hast
- Biedermann Lab for Orthopaedic Research, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Edward Fox
- Department of Orthopaedics and Rehabilitation, Pennsylvania State University, Hershey, Pennsylvania, United States of America
| | - Guha Manogharan
- Department of Mechanical Engineering, Pennsylvania State University, University Park, Pennsylvania, United States of America
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Assessment of the Tissue Response to Modification of the Surface of Dental Implants with Carboxyethylphosphonic Acid and Basic Fibroblastic Growth Factor Immobilization (Fgf-2): An Experimental Study on Minipigs. BIOLOGY 2021; 10:biology10050358. [PMID: 33922433 PMCID: PMC8146140 DOI: 10.3390/biology10050358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 11/23/2022]
Abstract
Simple Summary This study aimed to evaluate the efficacy of treating the surface of dental implants with carboxyethylphosphonic acid for the immobilization of FGF-2, the influence of FGF-2 on cortical bone in close contact with dental implants, new bone formation around dental implants in the presence of FGF-2 and the influence of FGF-2 on the interthread bone area of dental implants during the healing period after insertion. Abstract The aim of this study was to evaluate the effect of implant surface treatment with carboxyethylphosphonic acid and fibroblast growth factor 2 on the bone–implant interface during the osseointegration period in vivo using an animal model. The present research was carried out in six minipigs, in whose left tibia implants were inserted as follows: eight implants with a standard surface treatment, for the control group, and eight implants with a surface treatment of carboxyethylphosphonic acid and immobilization of FGF-2, for the test group. At 4 weeks after the insertion of the implants, the animals were sacrificed for the histomorphometric analysis of the samples. The means of the results for the implant–bone contact variable (BIC) were 46.39 ± 17.49% for the test group and 34.00 ± 9.92% for the control group; the difference was not statistically significant. For the corrected implant–bone contact variable (BICc), the mean value of the test group was 60.48 ± 18.11%, and that for the control group, 43.08 ± 10.77%; the difference was statistically significant (p-value = 0.035). The new bone formation (BV/TV) showed average results of 27.28 ± 3.88% for the test group and 26.63 ± 7.90% for the control group, meaning that the differences were not statistically significant (p-value = 0.839). Regarding the bone density at the interthread level (BAI/TA), the mean value of the test group was 32.27 ± 6.70%, and that of the control group was 32.91 ± 7.76%, with a p-value of 0.863, while for the peri-implant density (BAP/TA), the mean value of the test group was 44.96 ± 7.55%, and that for the control group was 44.80 ± 8.68%, without a significant difference between the groups. The current research only found a significant difference for the bone–implant contact at the cortical level; therefore, it could be considered that FGF-2 acts on the mineralization of bone tissue. The application of carboxyethylphosphonic acid on the surface of implants can be considered a promising alternative as a biomimetic coating for the immobilization of FGF-2. Despite no differences in the new bone formation around the implants or in the interthread or peri-implant bone density being detected, the biofunctionalization of the implant surface with FGF-2 accelerates the mineralization of the bone–implant interface at the cortical level, thereby reducing the osseointegration period.
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Yousefi AM, Powers J, Sampson K, Wood K, Gadola C, Zhang J, James PF. In vitro characterization of hierarchical 3D scaffolds produced by combining additive manufacturing and thermally induced phase separation. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2021; 32:454-476. [PMID: 33091329 PMCID: PMC7965350 DOI: 10.1080/09205063.2020.1841535] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/21/2020] [Accepted: 10/21/2020] [Indexed: 10/23/2022]
Abstract
This paper reports on the hybrid process we have used for producing hierarchical scaffolds made of poly(lactic-co-glycolic) acid (PLGA) and nanohydroxyapatite (nHA), analyzes their internal structures via scanning electron microscopy, and presents the results of our in vitro proliferation of MC3T3-E1 cells and alkaline phosphatase activity (ALP) for 0 and 21 days. These scaffolds were produced by combining additive manufacturing (AM) and thermally induced phase separation (TIPS) techniques. Slow cooling at a rate of 1.5 °C/min during the TIPS process was used to enable a uniform temperature throughout the scaffolds, and therefore, a relatively uniform pore size range. We produced ten different scaffold compositions and topologies in this study. These scaffolds had macrochannels with diameters of ∼300 µm, ∼380 µm, and ∼460 µm, generated by the extraction of embedded porous 3D-plotted polyethylene glycol (PEG) matrices. The other experimental factors included different TIPS temperatures (-20 °C, -10 °C, and 0 °C), as well as varying PLGA concentrations (8%, 10%, and 12% w/v) and nHA content (0%, 10%, and 20% w/w). Our results indicated that almost all these macro/microporous scaffolds supported cell growth over the period of 21 days. Nevertheless, significant differences were observed among some scaffolds in terms of their support of cell proliferation and differentiation. This paper presents the results of our in vitro cell culture for 0 and 21 days. Our optimal scaffold with a porosity of ∼90%, a modulus of ∼5.2 MPa, and a nHA content of 20% showed a cell adhesion of ∼29% on day 0 and maintained cell proliferation and ALP activity over the 21-day in vitro culture. Hence, the use of additive manufacturing and designed experiments to optimize the scaffold fabrication parameters resulted in superior mechanical properties that most other studies using TIPS.
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Affiliation(s)
- Azizeh-Mitra Yousefi
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, OH 45056
| | - Joseph Powers
- Department of Biology, Miami University, Oxford, OH 45056
| | - Kaylie Sampson
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, OH 45056
| | - Katherine Wood
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, OH 45056
| | - Carter Gadola
- Department of Biology, Miami University, Oxford, OH 45056
| | - Jing Zhang
- Department of Statistics, Miami University, Oxford, OH 45056
| | - Paul F. James
- Department of Biology, Miami University, Oxford, OH 45056
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Aoyagi A, Hata M, Matsukawa R, Imanishi Y, Takebe J. Physicochemical properties of anodized-hydrothermally treated titanium with a nanotopographic surface structure promote osteogenic differentiation in dental pulp stem cells. J Prosthodont Res 2021; 65:474-481. [PMID: 33612663 DOI: 10.2186/jpr.jpr_d_20_00114] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE Implants made of anodized-hydrothermally treated commercially pure titanium with a nanotopographic surface structure (SA-treated c.p.Ti) may advantageously promote contact osteogenesis during the early stages of healing. We hypothesized that utilizing SA-treated c.p.Ti with dental pulp stem cells (DPSCs) might improve osteoconduction during the process of osseointegration. This in vitro study investigated the effect of initial adhesion of DPSCs to SA-treated c.p.Ti compared with conventional c.p.Ti and anodic oxide (AO) c.p.Ti. METHODS DPSCs were obtained from the mandibular incisors of Sprague-Dawley rats and cultured without osteogenic induction medium on c.p.Ti, AO c.p.Ti, and SA-treated c.p.Ti disks for up to 14 days. The morphology, proliferation, and differentiation of DPSCs were assessed by scanning electron microscopy, an MTT assay, and Alizarin Red S staining, respectively. A real-time quantitative polymerase chain reaction was used to quantify the mRNA expression of osteocalcin, osteopontin, and bone sialoprotein. RESULTS On all disks, the DPSCs appeared flattened with the formation of extensions over time. The filopodium-like extensions were closely bound to the SA-treated c.p.Ti surface. The proliferation of DPSCs was not significantly different among the c.p.Ti treatments. However, DPSCs on SA-treated c.p.Ti showed the greatest mRNA levels of osteopontin, osteocalcin, and bone sialoprotein, as well as increased Alizarin Red S staining. CONCLUSIONS The results of the present in vitro study demonstrate that the surface properties of SA-treated c.p.Ti disks enhance osteogenic differentiation of DPSCs and may facilitate mineralized matrix formation on SA-treated c.p.Ti implant surfaces, which can enhance early bone regeneration.
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Affiliation(s)
- Atsushi Aoyagi
- Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University, Nagoya
| | - Masaki Hata
- Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University, Nagoya
| | - Ryohei Matsukawa
- Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University, Nagoya
| | - Yuka Imanishi
- Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University, Nagoya
| | - Jun Takebe
- Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University, Nagoya
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Avery SJ, Ayre WN, Sloan AJ, Waddington RJ. Interrogating the Osteogenic Potential of Implant SurfacesIn Vitro: A Review of Current Assays. TISSUE ENGINEERING PART B-REVIEWS 2020; 26:217-229. [DOI: 10.1089/ten.teb.2019.0312] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Steven James Avery
- Department of Oral and Biomedical Sciences, College of Biomedical and Life Sciences, Cardiff Institute for Tissue Engineering and Repair, School of Dentistry, Cardiff University, Cardiff, United Kingdom
| | - Wayne Nishio Ayre
- Department of Oral and Biomedical Sciences, College of Biomedical and Life Sciences, Cardiff Institute for Tissue Engineering and Repair, School of Dentistry, Cardiff University, Cardiff, United Kingdom
| | - Alastair James Sloan
- Department of Oral and Biomedical Sciences, College of Biomedical and Life Sciences, Cardiff Institute for Tissue Engineering and Repair, School of Dentistry, Cardiff University, Cardiff, United Kingdom
| | - Rachel Jane Waddington
- Department of Oral and Biomedical Sciences, College of Biomedical and Life Sciences, Cardiff Institute for Tissue Engineering and Repair, School of Dentistry, Cardiff University, Cardiff, United Kingdom
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Affiliation(s)
- Hamdan S. ALGHAMDI
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University
| | - John A. JANSEN
- Department of Dentistry–Biomaterials, Radboud University Medical Center
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The Effect of Laser Shock Peening on the Corrosion Behavior of Biocompatible Magnesium Alloy ZK60. METALS 2019. [DOI: 10.3390/met9111237] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The influences of different laser power density in LSP (laser shock peening) on the corrosion performance of biocompatible magnesium alloy ZK60 were researched via SBF (Simulated Body Fliud) immersion testing and electrochemical testing. Corrosion morphology and corrosion products were observed and analyzed using SEM (Scanning Electron Microscope) outfitted with EDS (Energy Dispersive Spectrometer) and XRD (X-ray Diffraction). Simultaneously, 3D morphology, surface roughness, residual stress, and microstructure were also characterized. Results reveal that the modified samples can obtain higher residual compressive stress, which can lead to lower degradation rates in SBF solution. In terms of the weight loss of the samples, corrosion resistance increased by 52.1% maximally. The corrosion potential of modified samples in the SBF solution positively shifted from −1.3884 V to −1.1094 V and the corrosion current density decreased by 13.2% at most. The anti-corrosion ability of ZK60 is significantly enhanced by the LSP process.
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Asensio G, Vázquez-Lasa B, Rojo L. Achievements in the Topographic Design of Commercial Titanium Dental Implants: Towards Anti-Peri-Implantitis Surfaces. J Clin Med 2019; 8:E1982. [PMID: 31739615 PMCID: PMC6912779 DOI: 10.3390/jcm8111982] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/04/2019] [Accepted: 11/11/2019] [Indexed: 12/12/2022] Open
Abstract
Titanium and its alloys constitute the gold standard materials for oral implantology in which their performance is mainly conditioned by their osseointegration capacity in the host's bone. We aim to provide an overview of the advances in surface modification of commercial dental implants analyzing and comparing the osseointegration capacity and the clinical outcome exhibited by different surfaces. Besides, the development of peri-implantitis constitutes one of the most common causes of implant loss due to bacteria colonization. Thus, a synergic response from industry and materials scientists is needed to provide reliable technical and commercial solutions to this issue. The second part of the review focuses on an update of the recent findings toward the development of new materials with osteogenic and antibacterial capacity that are most likely to be marketed, and their correlation with implant geometry, biomechanical behavior, biomaterials features, and clinical outcomes.
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Affiliation(s)
- Gerardo Asensio
- Instituto de Ciencia y Tecnología de Polímeros, Consejo Superior de Investigaciones Científicas, CSIC, 28006 Madrid, Spain; (G.A.); (B.V.-L.)
| | - Blanca Vázquez-Lasa
- Instituto de Ciencia y Tecnología de Polímeros, Consejo Superior de Investigaciones Científicas, CSIC, 28006 Madrid, Spain; (G.A.); (B.V.-L.)
- Consorcio Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, 28029 Madrid, Spain
| | - Luis Rojo
- Instituto de Ciencia y Tecnología de Polímeros, Consejo Superior de Investigaciones Científicas, CSIC, 28006 Madrid, Spain; (G.A.); (B.V.-L.)
- Consorcio Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, 28029 Madrid, Spain
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Witek L, Alifarag AM, Tovar N, Lopez CD, Gil LF, Gorbonosov M, Hannan K, Neiva R, Coelho PG. Osteogenic parameters surrounding trabecular tantalum metal implants in osteotomies prepared via osseodensification drilling. Med Oral Patol Oral Cir Bucal 2019; 24:e764-e769. [PMID: 31655837 PMCID: PMC6901143 DOI: 10.4317/medoral.23108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 07/20/2019] [Indexed: 12/30/2022] Open
Abstract
Background Surgical fixation of implants into bone for the correction of bone deformities or defects is a traditional approach for skeletal stabilization. Important measures of efficacy of implants include implant stability and osseointegration—the direct interaction between living bone and an implant. Osseointegration depends on successful implant placement and subsequent bone remodeling. This study utilized osseodensification drilling (OD) in a low bone density model using trabecular metal (TM) implants.
Material and Methods Three osteotomy sites, Regular, OD-CW (clockwise), and OD-CCW (counterclockwise), were prepared in each ilium of three female sheep. Drilling was performed at 1100rpm with saline irrigation. Trabecular metal (TM) (Zimmer®, Parsippany, NJ, USA) implants measuring 3.7mm in diameter x 10mm length were placed into respective osteotomies. A three-week period post-surgery was given to allow for healing to take place after which all three sheep were euthanized and the ilia were collected. Samples were prepared, qualitatively and quantitatively analyzed using histology micrographs and image analysis software (ImageJ, NIH, Bethesda, MD). Bone-to-implant contact (BIC) and bone area fraction occupancy (BAFO) were quantified to evaluate the osseointegration parameters.
Results All implants exhibit successful bone formation in the peri-implant environment as well as within the open spaces of the trabecular network. Osseointegration within the TM (quantified by %BIC) as a function of drilling technique was more pronounced in OD samples(p>0.05). The %BAFO however shows a significant difference (p=0.036) between the CCW and R samples. Greater bone volume and frequency of bone chips are observed in OD samples.
Conclusions The utilization of OD as a design for improved fixation of hardware was supported by increased levels of stability, both primary and secondary. Histological data with OD provided notably different results from those of the regular drilling method. Key words:Osseodensification drilling, trabecular tantalum metal, osteotomies, implants, subtractive drilling.
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Affiliation(s)
- L Witek
- 433 1st Ave, Room 842 New York University College of Dentistry Department of Biomaterials and Biomimetics New York, NY
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Bandyopadhyay A, Mitra I, Shivaram A, Dasgupta N, Bose S. Direct comparison of additively manufactured porous titanium and tantalum implants towards in vivo osseointegration. ADDITIVE MANUFACTURING 2019; 28:259-266. [PMID: 31406683 PMCID: PMC6690615 DOI: 10.1016/j.addma.2019.04.025] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Material properties of implants such as volume porosity and nanoscale surface modification have been shown to enhance cell-material interactions in vitro and osseointegration in vivo. Porous tantalum (Ta) and titanium (Ti) coatings are widely used for non-cemented implants, which are fabricated using different processing routes. In recent years, some of those implants are being manufactured using additive manufacturing. However, limited knowledge is available on direct comparison of additively manufactured porous Ta and Ti structures towards early stage osseointegration. In this study, we have fabricated porous Ta and Ti6Al4V (Ti64) implants using laser engineered net shaping (LENS™) with similar volume fraction porosity to compare the influence of surface characteristics and material chemistry on in vivo response using a rat distal femur model for 5 and 12 weeks. We have also assessed whether surface modification on Ti64 can elicit similar in vivo response as porous Ta in a rat distal femur model for 5 and 12 weeks. The harvested implants were histologically analyzed for osteoid surface per bone surface. Field emission scanning electron microscopy (FESEM) was done to assess the bone-implant interface. The results presented here indicate comparable performance of porous Ta and surface modified porous Ti64 implants towards early stage osseointegration at 5 weeks post implantation through seamless bone-material interlocking. However, a continued and extended efficacy of porous Ta is found in terms of higher osteoid formation at 12 weeks post-surgery.
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Affiliation(s)
- Amit Bandyopadhyay
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164, USA
| | - Indranath Mitra
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164, USA
| | - Anish Shivaram
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164, USA
| | - Nairanjana Dasgupta
- Department of Mathematics and Statistics, Washington State University, Pullman, WA, 99164, USA
| | - Susmita Bose
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164, USA
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Lee DJ, Ryu JS, Shimono M, Lee KW, Lee JM, Jung HS. Differential Healing Patterns of Mucosal Seal on Zirconia and Titanium Implant. Front Physiol 2019; 10:796. [PMID: 31333481 PMCID: PMC6616312 DOI: 10.3389/fphys.2019.00796] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 06/06/2019] [Indexed: 11/13/2022] Open
Abstract
Zirconia implants have become an alternative to titanium implants due to several advantages. The zirconia implant is relatively esthetic and highly resistant to bacteria. While biomaterial studies for zirconia implants have considerably accumulated, in vivo studies have not yet progressed. In the present study, the functional and biological properties of zirconia implants were analyzed thorough in vitro and in vivo studies. The proliferation properties of periodontal cells on the discs of machined surface titanium, hydroxyapatite coated titanium and zirconia were analyzed, and zirconia was shown to be favorable. In addition, small implant fixtures that can be applied to the jawbone of mice were manufactured and transplanted to C57BL/6 mice. The adhesion molecules expression patterns in peri-implant mucosa suggest a stronger mucosal seal and more adequate prevention of peri-implant epithelium (PIE) elongation in the zirconia implant when compared with other conventional materials. Differential laminin-332 expression in peri-implant mucosa of zirconia implants seems to regulate the PIE elongation. In conclusion, zirconia was found to be promising and advantageous with regards to the mucosal seal. And biological width (BW) of peri-implant mucosa is more desirable in zirconia implants compared to conventional titanium implants.
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Affiliation(s)
- Dong-Joon Lee
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Joon-Sang Ryu
- Department of Prosthodontics, Oral Science Research Center, Yonsei University College of Dentistry, Seoul, South Korea
| | - Masaki Shimono
- Department of Pathology, Tokyo Dental College, Tokyo, Japan
| | - Keun-Woo Lee
- Department of Prosthodontics, Oral Science Research Center, Yonsei University College of Dentistry, Seoul, South Korea
| | - Jong-Min Lee
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Han-Sung Jung
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, South Korea.,Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
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Kumar PS, KS SK, Grandhi VV, Gupta V. The Effects of Titanium Implant Surface Topography on Osseointegration: Literature Review. JMIR BIOMEDICAL ENGINEERING 2019. [DOI: 10.2196/13237] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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Osteointegrative and microgeometric comparison between micro-blasted and alumina blasting/acid etching on grade II and V titanium alloys (Ti-6Al-4V). J Mech Behav Biomed Mater 2019; 97:288-295. [PMID: 31146202 DOI: 10.1016/j.jmbbm.2019.05.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 03/20/2019] [Accepted: 05/16/2019] [Indexed: 11/20/2022]
Abstract
This study evaluated the effect of alumina-blasted/acid-etched (AB/AE) or microabrasive blasting (C3-Microblasted) surface treatment on the osseointegration of commercially-pure Ti (grade II) and Ti-6Al-4V alloy (grade V) implants compared to as-machined surfaces. Surface characterization was performed by scanning electron microscopy and optical interferometry (IFM) to determine roughness parameters (Sa and Sq, n = 3 per group). One-hundred forty-four implants were placed in the radii of 12 beagle dogs, for histological (n = 72, bone-to-implant contact - BIC and bone-area-fraction occupancy -BAFO) and torque to interface failure test at 3 and 6 weeks (n = 72). SEM and IFM revealed a significant increase in surface texture for AB/AE and C3-Microblasted surfaces compared to machined surface, regardless of titanium substrate. Torque-to-interface failure test showed significant increase in values from as-machined to AB/AE and to C3-Microblasted. Considering time in vivo, alloy grade, and surface treatment, the C3-microblasted presented higher mean BIC values relative to AB/AE and machined surfaces for both alloy types. BAFO levels were significantly higher for both textured surfaces groups relative to the machined group at 3 weeks, but differences were not significant between the three surfaces for each alloy type at 6 weeks. Surface treatment resulted in roughness that improved osseointegration in Grade II and V titanium substrates.
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Application of a novel porous tantalum implant in rabbit anterior lumbar spine fusion model: in vitro and in vivo experiments. Chin Med J (Engl) 2019; 132:51-62. [PMID: 30628959 PMCID: PMC6629310 DOI: 10.1097/cm9.0000000000000030] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Some porous materials have been developed to enhance biologic fusion of the implants to bone in spine fusion surgeries. However, there are several inherent limitations. In this study, a novel biomedical porous tantalum was applied to in vitro and in vivo experiments to test its biocompatibility and osteocompatibility. METHODS Bone marrow-derived mesenchymal stem cells (BMSCs) were cultured on porous tantalum implant. Scanning electron microscope (SEM) and Cell Counting Kit-8 assay were used to evaluate the cell toxicity and biocompatibility. Twenty-four rabbits were performed discectomy only (control group), discectomy with autologous bone implanted (autograft group), and discectomy with porous tantalum implanted (tantalum group) at 3 levels: L3-L4, L4-L5, and L5-L6 in random order. All the 24 rabbits were randomly sacrificed at the different post-operative times (2, 4, 6, and 12 months; n = 6 at each time point). Histologic examination and micro-computed tomography scans were done to evaluate the fusion process. Comparison of fusion index scores between groups was analyzed using one-way analysis of variance. Other comparisons of numerical variables between groups were made by Student t test. RESULTS All rabbits survived and recovered without any symptoms of nerve injury. Radiographic fusion index scores at 12 months post-operatively between autograft and tantalum groups showed no significant difference (2.89 ± 0.32 vs. 2.83 ± 0.38, F = 244.60, P = 0.709). Cell Counting Kit-8 assay showed no significant difference of absorbance values between the leaching liquor group and control group (1.25 ± 0.06 vs. 1.23 ± 0.04, t = -0.644, P = 0.545), which indicated the BMSC proliferation without toxicity. SEM images showed that these cells had irregular shapes with long spindles adhered to the surface of tantalum implant. No implant degradation, wear debris, or osteolysis was observed. Histologic results showed solid fusion in the porous tantalum and autologous bone implanted intervertebral spaces. CONCLUSION This novel porous tantalum implant showed a good biocompatibility and osteocompatibility, which could be a valid biomaterial for interbody fusion cages.
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A hydrogenated black TiO 2 coating with excellent effects for photothermal therapy of bone tumor and bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 102:458-470. [PMID: 31147017 DOI: 10.1016/j.msec.2019.04.025] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 03/08/2019] [Accepted: 04/09/2019] [Indexed: 02/03/2023]
Abstract
The clinical treatment of bone tumors usually brings about residual tumor cells and large bone defects after tumor removal surgery. To solve this problem, it is imperative to develop a novel implant with bi-functions for eliminating the residual tumor cells and repairing bone defects. In this study, hydrogenated black TiO2 (H-TiO2) coating with hierarchical micro/nano-topographies is fabricated by induction suspension plasma spraying (ISPS). The fabricated H-TiO2 coating possessed excellent and controllable photothermal effect in inhibiting the tumor growth under 808 nm NIR laser irradiation in vitro and in vivo. The hierarchical hybrid micro/nano-structured surface and Ti-OH groups improved the adhesion, proliferation, differentiation and osteogenic gene expressions of rat bone mesenchymal stem cells (rBMSCs). These results demonstrate that the H-TiO2 coating may be a promising implant material for the treatment of bone tumors and bone regeneration.
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Effects of Laser Texture Oxidation and High-Temperature Annealing of TiV Alloy Thin Films on Mechanical and Antibacterial Properties and Cytotoxicity. MATERIALS 2018; 11:ma11122495. [PMID: 30544800 PMCID: PMC6316979 DOI: 10.3390/ma11122495] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 12/04/2018] [Accepted: 12/06/2018] [Indexed: 11/22/2022]
Abstract
Titanium dioxide and vanadium oxides have been applied extensively in industrial and medical fields. The objective of this study was to develop various composite structures of titanium and vanadium oxide (Ti-V-O) coatings on pure titanium through high-temperature annealing and laser texturing oxidation, separately; additionally, surface morphologies, tribological and hydrophilic properties, and antibacterial and biocompatibility abilities of these Ti-V-O coatings were evaluated. TiV alloy thin films were deposited on pure titanium and then annealed to form Ti-V-O coatings through thermal oxidation and laser texturing oxidation. Ball-on-disc wear tests and contact angle tests were conducted to evaluate the tribological properties and wettability of the coatings, respectively. The antibacterial activity of the coatings was estimated by SYTO9 nucleic acid staining with Staphylococcus aureus (Gram-positive bacteria). The cell cytotoxicity of the coatings was analyzed following the ISO 10995-5:2009 standard with human skin fibroblast cells. The Ti-V-O coatings, subjected to annealing at 700 °C, demonstrated higher hardness (Hv 1171) and a lower friction coefficient (0.6). The highest hardness (Hv 2711) and the lowest friction coefficient (0.52) were obtained for the Ti-V-O after laser surface texturing oxidation at 100 kHz. The oxide coating obtained from 100 kHz laser texturing oxidation exhibited the lotus effect because of its systematic textured microstructures, and displayed superhydrophobic surface properties. Compared with the unannealed TiV coating, both the samples with high-temperature annealing and laser surface texturing oxidation had excellent antibacterial properties to Staphylococcus aureus. However, the Ti-V-O thin films exhibited notable cell cytotoxicity. Although the cell viability on Ti-V-O coatings were not ideal, this study confirmed improvement in surface hardness, tribology, and antibacterial performance in Ti-V-O coatings, which may have potential for use in biomedical tools, devices, and equipment.
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Alifarag AM, Lopez CD, Neiva RF, Tovar N, Witek L, Coelho PG. Atemporal osseointegration: Early biomechanical stability through osseodensification. J Orthop Res 2018. [PMID: 29537128 DOI: 10.1002/jor.23893] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Osseointegration, the direct functional and structural connection between device and bone is influenced by multiple factors such as implant macrogeometry and surgical technique. This study investigated the effects of osseodensification drilling techniques on implant stability and osseointegration using trabecular metal (TM) and tapered-screw vent (TSV) implants in a low-density bone. Six skeletally mature sheep were used where six osteotomy sites were prepared in each of the ilia, (n = 2/technique: Regular [R] (subtractive), clockwise [CW], and counterclockwise [CCW]). One TM and one TSV implant was subsequently placed with R osteotomy sites prepared using a conventional (subtractive) drilling protocol as recommended by the implant manufacturer for low density bone. CW and CCW drilling sites were subjected to osseodensification (OD) (additive) drilling. Evaluation of insertion torque as a function of drilling technique showed implants subjected to R drilling yielded a significant lower insertion torque relative to samples implanted in OD (CW/CCW) sites (p < 0.05). Histomorphometric analysis shows that the osseodensification demonstrates significantly greater values for bone-to-implant contact (BIC) and bone area fraction occupancy (BAFO). Histological analysis shows the presence of bone remnants, which acted as nucleating surfaces for osteoblastic bone deposition, facilitating the bridging of bone between the surrounding native bone and implant surface, as well as within the open spaces of the trabecular network in the TM implants. Devices that were implanted via OD demonstrated atemporal biomechanical stability and osseointegration. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:2516-2523, 2018.
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Affiliation(s)
- Adham M Alifarag
- College of Medicine, SUNY Upstate Medical University, Syracuse, New York.,Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 1st Ave, Room 862, New York, New York 10010
| | - Christopher D Lopez
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 1st Ave, Room 862, New York, New York 10010.,Icahn School of Medicine at Mount Sinai, New York, New York.,Department of Comparative Medicine, New York University School of Medicine, New York, New York.,Hansjörg Wyss Department of Plastic Surgery, New York University Langone Medical Center, New York, New York
| | - Rodrigo F Neiva
- Department of Periodontology, University of Florida College of Dentistry, Gainesville, Florida
| | - Nick Tovar
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 1st Ave, Room 862, New York, New York 10010
| | - Lukasz Witek
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 1st Ave, Room 862, New York, New York 10010
| | - Paulo G Coelho
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 1st Ave, Room 862, New York, New York 10010.,Hansjörg Wyss Department of Plastic Surgery, New York University Langone Medical Center, New York, New York
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Xu Y, Lu T, He F, Ma N, Ye J, Wu T. Enhancing the Cell-Biological Performances of Hydroxyapatite Bioceramic by Constructing Silicate-Containing Grain Boundary Phases via Sol Infiltration. ACS Biomater Sci Eng 2018; 4:3154-3162. [PMID: 33435056 DOI: 10.1021/acsbiomaterials.8b00697] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hydroxyapatite (HA) is well-known as one of the excellent bone repair biomaterials because of its chemical similarity with biological apatite. However, weak bioactivity obstructs its application. Although the bioactivity of HA bioceramic could be enhanced by the incorporation of bioactive glass (BG), the dramatic decrease of its mechanical property is consistently a disturbance to the reliable efficacy of traditional modified HA bioceramic. In this study, HA bioceramic was modified by infiltration of BG sol and formation of silicate-containing grain boundary phases during subsequent sintering. The phase compositions, microstructure, mechanical performance, in vitro degradation behaviors, and osteogenesis of the bioceramic were investigated. The modified HA bioceramic exhibited an interesting phenomenon in which the HA grains were uniformly enveloped by the small silicate-containing grains in the boundaries of HA grains. The microporosity of modified HA bioceramics was up to 25.27% ± 0.01%, much higher than that of unmodified HA bioceramic (1.74% ± 0.27%). The compressive strength of the modified HA bioceramic via BG sol infiltration was much higher than that of the HA bioceramic modified by BG via mechanical blending method, though slightly lower than that of the blank. Moreover, mouse bone mesenchymal stem cells (mBMSCs) cultured on modified bioceramic displayed better adhesion morphology and proliferation, and had an enhanced expression of osteogenesis-related genes. This study offers a new strategy to improve the bioactivity of HA bioceramic without obvious deterioration in mechanical strength.
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Affiliation(s)
- Yubin Xu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Teliang Lu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Fupo He
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Ning Ma
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Jiandong Ye
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Tingting Wu
- Center of Joint Surgery and Sports Medicine, Institute of Orthopedic Diseases, The First Affiliated Hospital, Jinan University, Guangzhou 510630, China
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Kersten RFMR, Wu G, Pouran B, van der Veen AJ, Weinans HH, de Gast A, Öner FC, van Gaalen SM. Comparison of polyetheretherketone versus silicon nitride intervertebral spinal spacers in a caprine model. J Biomed Mater Res B Appl Biomater 2018; 107:688-699. [PMID: 30091515 DOI: 10.1002/jbm.b.34162] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 04/22/2018] [Accepted: 04/29/2018] [Indexed: 12/17/2022]
Abstract
Polyetheretherketone (PEEK) is commonly used as a spinal spacer for intervertebral fusion surgery. Unfortunately, PEEK is bioinert and does not effectively osseointegrate into living bone. In contrast, comparable spacers made of silicon nitride (Si3 N4 ) possess a surface nanostructure and chemistry that encourage appositional bone healing. This observational study was designed to compare the outcomes of these two biomaterials when implanted as spacers in an adult caprine model. Lumbar interbody fusion surgeries were performed at two adjacent levels in eight adult goats using implants of PEEK and Si3 N4 . At six-months after surgery, the operative and adjacent spinal segments were extracted and measured for bone fusion, bone volume, bone-implant contact (BIC) and soft-tissue implant contact (SIC) ratios, and biodynamic stability. The null hypothesis was that no differences in these parameters would be apparent between the two groups. Fusion was observed in seven of eight implants in each group with greater bone formation in the Si3 N4 group (52.6%) versus PEEK (27.9%; p = 0.2). There were no significant differences in BIC ratios between PEEK and Si3 N4 , and the biodynamic stability of the two groups was also comparable. The results suggest that Si3 N4 spacers are not inferior to PEEK and they may be more effective in promoting arthrodesis. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 00B: 000-000, 2018. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 688-699, 2019.
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Affiliation(s)
- Roel F M R Kersten
- Department of Orthopedic Surgery, Clinical Orthopedic Research Center midden-Nederland (CORCmN), Diakonessenhuis, Utrecht, The Netherlands.,Department of Orthopedic Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit (VU), Amsterdam, The Netherlands
| | - Behdad Pouran
- Department of Orthopedic Surgery, University Medical Center Utrecht, Utrecht, The Netherlands.,Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology (TU Delft), Delft, The Netherlands
| | - Albert J van der Veen
- Department of Physics and Medical Technology, VU University Medical Center, Amsterdam, The Netherlands
| | - Harrie H Weinans
- Department of Orthopedic Surgery, University Medical Center Utrecht, Utrecht, The Netherlands.,Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology (TU Delft), Delft, The Netherlands
| | - Arthur de Gast
- Department of Orthopedic Surgery, Clinical Orthopedic Research Center midden-Nederland (CORCmN), Diakonessenhuis, Utrecht, The Netherlands
| | - F Cumhur Öner
- Department of Orthopedic Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Steven M van Gaalen
- Department of Orthopedic Surgery, Clinical Orthopedic Research Center midden-Nederland (CORCmN), Diakonessenhuis, Utrecht, The Netherlands
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Rezaei NM, Hasegawa M, Ishijima M, Nakhaei K, Okubo T, Taniyama T, Ghassemi A, Tahsili T, Park W, Hirota M, Ogawa T. Biological and osseointegration capabilities of hierarchically (meso-/micro-/nano-scale) roughened zirconia. Int J Nanomedicine 2018; 13:3381-3395. [PMID: 29922058 PMCID: PMC5997135 DOI: 10.2147/ijn.s159955] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
PURPOSE Zirconia is a potential alternative to titanium for dental and orthopedic implants. Here we report the biological and bone integration capabilities of a new zirconia surface with distinct morphology at the meso-, micro-, and nano-scales. METHODS Machine-smooth and roughened zirconia disks were prepared from yttria-stabilized tetragonal zirconia polycrystal (Y-TZP), with rough zirconia created by solid-state laser sculpting. Morphology of the surfaces was analyzed by three-dimensional imaging and profiling. Rat femur-derived bone marrow cells were cultured on zirconia disks. Zirconia implants were placed in rat femurs and the strength of osseointegration was evaluated by biomechanical push-in test. RESULTS The rough zirconia surface was characterized by meso-scale (50 µm wide, 6-8 µm deep) grooves, micro-scale (1-10 µm wide, 0.1-3 µm deep) valleys, and nano-scale (10-400 nm wide, 10-300 nm high) nodules, whereas the machined surface was flat and uniform. The average roughness (Ra) of rough zirconia was five times greater than that of machined zirconia. The expression of bone-related genes such as collagen I, osteopontin, osteocalcin, and BMP-2 was 7-25 times upregulated in osteoblasts on rough zirconia at the early stage of culture. The number of attached cells and rate of proliferation were similar between machined and rough zirconia. The strength of osseointegration for rough zirconia was twice that of machined zirconia at weeks two and four of healing, with evidence of mineralized tissue persisting around rough zirconia implants as visualized by electron microscopy and elemental analysis. CONCLUSION This unique meso-/micro-/nano-scale rough zirconia showed a remarkable increase in osseointegration compared to machine-smooth zirconia associated with accelerated differentiation of osteoblasts. Cell attachment and proliferation were not compromised on rough zirconia unlike on rough titanium. This is the first report introducing a rough zirconia surface with distinct hierarchical morphology and providing an effective strategy to improve and develop zirconia implants.
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Affiliation(s)
- Naser Mohammadzadeh Rezaei
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Masakazu Hasegawa
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Manabu Ishijima
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Kourosh Nakhaei
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Takahisa Okubo
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Takashi Taniyama
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Amirreza Ghassemi
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Tania Tahsili
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Wonhee Park
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Makoto Hirota
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Takahiro Ogawa
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA, USA
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Beger B, Goetz H, Morlock M, Schiegnitz E, Al-Nawas B. In vitro surface characteristics and impurity analysis of five different commercially available dental zirconia implants. Int J Implant Dent 2018; 4:13. [PMID: 29696470 PMCID: PMC5918143 DOI: 10.1186/s40729-018-0124-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 02/08/2018] [Indexed: 11/20/2022] Open
Abstract
Background The aim of this study was to assess surface characteristics, element composition, and surface roughness of five different commercially available dental zirconia implants. Five zirconia implants (Bredent whiteSKY™ (I1), Straumann® PURE Ceramic (I2), ceramic.implant vitaclinical (I3), Zeramex® (I4), Ceralog Monobloc M10 (I5)) were evaluated. Methods The evaluation was performed by means of scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and confocal laser scanning microscopy (CLSM). Results The semi-quantitative element composition showed no significant impurity of any implant tested. Both the machined and the rough areas of the investigated implants were predominated by zirconium, oxygen, and carbon. Roughness values (Sa) showed highest values for I2 and I5. Conclusions The investigated zirconia implants showed surface characteristics and roughness values close to those of conventionally produced titanium implants, making them a promising alternative. However, zirconia implants have yet to prove themselves in clinical practice and clinical controlled trials.
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Affiliation(s)
- B Beger
- Department of Maxillofacial Surgery, University Medical Center of the Johannes Gutenberg-University Mainz, Augustusplatz 2, 55131, Mainz, Germany.
| | - H Goetz
- Biomaterials in Medicine (BioAPP), University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - M Morlock
- Department of Maxillofacial Surgery, University Medical Center of the Johannes Gutenberg-University Mainz, Augustusplatz 2, 55131, Mainz, Germany
| | - E Schiegnitz
- Department of Maxillofacial Surgery, University Medical Center of the Johannes Gutenberg-University Mainz, Augustusplatz 2, 55131, Mainz, Germany
| | - B Al-Nawas
- Department of Maxillofacial Surgery, University Medical Center of the Johannes Gutenberg-University Mainz, Augustusplatz 2, 55131, Mainz, Germany
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Methods to Improve Osseointegration of Dental Implants in Low Quality (Type-IV) Bone: An Overview. J Funct Biomater 2018; 9:jfb9010007. [PMID: 29342830 PMCID: PMC5872093 DOI: 10.3390/jfb9010007] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 01/09/2018] [Accepted: 01/09/2018] [Indexed: 12/31/2022] Open
Abstract
Nowadays, dental implants have become more common treatment for replacing missing teeth and aim to improve chewing efficiency, physical health, and esthetics. The favorable clinical performance of dental implants has been attributed to their firm osseointegration, as introduced by Brånemark in 1965. Although the survival rate of dental implants over a 10-year observation has been reported to be higher than 90% in totally edentulous jaws, the clinical outcome of implant treatment is challenged in compromised (bone) conditions, as are frequently present in elderly people. The biomechanical characteristics of bone in aged patients do not offer proper stability to implants, being similar to type-IV bone (Lekholm & Zarb classification), in which a decreased clinical fixation of implants has been clearly demonstrated. However, the search for improved osseointegration has continued forward for the new evolution of modern dental implants. This represents a continuum of developments spanning more than 20 years of research on implant related-factors including surgical techniques, implant design, and surface properties. The methods to enhance osseointegration of dental implants in low quality (type-IV) bone are described in a general manner in this review.
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Salahshoor M, Li C, Liu ZY, Fang XY, Guo YB. Surface integrity and corrosion performance of biomedical magnesium-calcium alloy processed by hybrid dry cutting-finish burnishing. J Mech Behav Biomed Mater 2017; 78:246-253. [PMID: 29179040 DOI: 10.1016/j.jmbbm.2017.11.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 10/15/2017] [Accepted: 11/16/2017] [Indexed: 11/29/2022]
Abstract
Biodegradable magnesium-calcium (MgCa) alloy is a very attractive orthopedic biomaterial compared to permanent metallic alloys. However, the critical issue is that MgCa alloy corrodes too fast in the human organism. Compared to dry cutting, the synergistic dry cutting-finish burnishing can significantly improve corrosion performance of MgCa0.8 (wt%) alloy by producing a superior surface integrity including good surface finish, high compressive hook-shaped residual stress profile, extended strain hardening in subsurface, and little change of grain size. A FEA model was developed to understand the plastic deformation of MgCa materials during burnishing process. The measured polarization curves, surface micrographs, and element distributions of the corroded surfaces by burnishing show an increasing and uniform corrosion resistance to simulated body fluid.
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Affiliation(s)
- M Salahshoor
- Dept. of Mechanical Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - C Li
- Dept. of Mechanical Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Z Y Liu
- Dept. of Mechanical Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - X Y Fang
- Institute for Advanced Manufacturing, Shandong University of Technology, Zibo 255049, China.
| | - Y B Guo
- Dept. of Mechanical Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA.
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Schilling T, Bauer M, Biskup C, Haverich A, Hassel T. Engineering of biodegradable magnesium alloy scaffolds to stabilize biological myocardial grafts. BIOMED ENG-BIOMED TE 2017; 62:493-504. [PMID: 28525361 DOI: 10.1515/bmt-2016-0205] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 03/28/2017] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Regenerative bioprostheses are being investigated for replacement of dysfunctional myocardium worldwide. The aim of this study was to develop a degradable magnesium structure to mechanically support the delicate biological grafts during the early remodeling phase. METHODS Sheets of magnesium alloys (LA33, LA63 and AX30) were manufactured into scaffolds by abrasive water jet cutting. Thereafter, their surface properties, corrosion kinetics, and breakage behaviors were investigated. RESULTS The magnesium alloy LA63 sheets proved superior to the other alloys in terms of load cycles (lc) until break of the specimens (LA63: >10 Mio lc; AX30: 676,044±220,016 lc; LA33: 423,558±210,063 lc; p<0.01). Coating with MgF led to better protection than coating with MagPass. Less complex, yet sufficiently flexible scaffolds were less prone to early breakage. A slow traverse rate during water jet cutting resulted in the lowest burr, but in a widening of the kerf width from 615±11 μm at 500 mm/min to 708±33 μm at 10 mm/min (p<0.01). CONCLUSION The findings on alloy composition, coating, structural geometry and manufacturing parameters constitute a basis for clinically applicable magnesium scaffolds. The use of stabilized, regenerative myocardium prostheses could save the patients from severe morbidity and eventually death.
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Santoro F, Zhao W, Joubert LM, Duan L, Schnitker J, van de Burgt Y, Lou HY, Liu B, Salleo A, Cui L, Cui Y, Cui B. Revealing the Cell-Material Interface with Nanometer Resolution by Focused Ion Beam/Scanning Electron Microscopy. ACS NANO 2017; 11:8320-8328. [PMID: 28682058 PMCID: PMC5806611 DOI: 10.1021/acsnano.7b03494] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The interface between cells and nonbiological surfaces regulates cell attachment, chronic tissue responses, and ultimately the success of medical implants or biosensors. Clinical and laboratory studies show that topological features of the surface profoundly influence cellular responses; for example, titanium surfaces with nano- and microtopographical structures enhance osteoblast attachment and host-implant integration as compared to a smooth surface. To understand how cells and tissues respond to different topographical features, it is of critical importance to directly visualize the cell-material interface at the relevant nanometer length scale. Here, we present a method for in situ examination of the cell-to-material interface at any desired location, based on focused ion beam milling and scanning electron microscopy imaging to resolve the cell membrane-to-material interface with 10 nm resolution. By examining how cell membranes interact with topographical features such as nanoscale protrusions or invaginations, we discovered that the cell membrane readily deforms inward and wraps around protruding structures, but hardly deforms outward to contour invaginating structures. This asymmetric membrane response (inward vs outward deformation) causes the cleft width between the cell membrane and the nanostructure surface to vary by more than an order of magnitude. Our results suggest that surface topology is a crucial consideration for the development of medical implants or biosensors whose performances are strongly influenced by the cell-to-material interface. We anticipate that the method can be used to explore the direct interaction of cells/tissue with medical devices such as metal implants in the future.
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Affiliation(s)
- Francesca Santoro
- Department of Chemistry, Stanford University, Stanford, CA94305, USA
- Correspondence to: ,
| | - Wenting Zhao
- Department of Chemistry, Stanford University, Stanford, CA94305, USA
- Department of Material Science and Engineering, Stanford University, Stanford, CA94305, USA
| | | | - Liting Duan
- Department of Chemistry, Stanford University, Stanford, CA94305, USA
| | - Jan Schnitker
- Institute of Bioelectronics ICS/PGI-8, Forschungszentrum Juelich, Juelich, 52428, Germany
| | - Yoeri van de Burgt
- Department of Material Science and Engineering, Stanford University, Stanford, CA94305, USA
| | - Hsin-Ya Lou
- Department of Chemistry, Stanford University, Stanford, CA94305, USA
| | - Bofei Liu
- Department of Material Science and Engineering, Stanford University, Stanford, CA94305, USA
| | - Alberto Salleo
- Department of Material Science and Engineering, Stanford University, Stanford, CA94305, USA
| | - Lifeng Cui
- Department of Material Science and Engineering, Dongguan University of Technology, Guangdong 523808, China
| | - Yi Cui
- Department of Material Science and Engineering, Stanford University, Stanford, CA94305, USA
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator, Menlo Park, CA94025, USA
| | - Bianxiao Cui
- Department of Chemistry, Stanford University, Stanford, CA94305, USA
- Correspondence to: ,
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Behavior of Osteoblast-Like Cells on a β-Tricalcium Phosphate Synthetic Scaffold Coated With Calcium Phosphate and Magnesium. J Craniofac Surg 2017; 27:898-903. [PMID: 27244203 DOI: 10.1097/scs.0000000000002651] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVES Tricalcium phosphate (TCP) is one of the most useful synthetic scaffolds for bone grafts and has several advantages. However, the rapid degradation of TCP makes it less osteoconductive than the other candidates, and represents a major shortcoming. To overcome this problem, the authors investigated magnesium (Mg) and/or hydroxyapatite (HA) coating on a β-TCP substrate using a sputtering technique. METHODS Biocompatibility tests were carried out on β-TCP discs that were either uncoated (TCP), coated with HA by radio frequency magnetron sputtering (HA-TCP), coated with Mg by DC sputtering (Mg-TCP), or multicoated with Mg and HA by DC and radio frequency magnetron sputtering (MgHA-TCP). RESULTS Cells showed similar morphology in all 4 groups, and were widely spread, had flattened elongated shapes, and were connected to adjacent cells by pseudopods. An MTT assay revealed higher cell proliferation on HA-TCP, Mg-TCP, and MgHA-TCP compared with TCP at 3 and 5 days. MgHA-TCP also showed significantly higher alkaline phosphatase activity levels compared with TCP, HA-TCP, and Mg-TCP (P < 0.05). CONCLUSIONS Results suggest that Mg-coated β-TCP could have great potential as a bone graft material for future applications in hard tissue regeneration.
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Lecocq M, Felix MS, Bernard C, Linares JM, Chaves-Jacob J, Decherchi P, Dousset E. Biocompatibility of four common orthopedic biomaterials following neuroelectromyostimulation: An in-vivo study. J Biomed Mater Res B Appl Biomater 2017; 106:1156-1164. [PMID: 28556590 DOI: 10.1002/jbm.b.33927] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 04/25/2017] [Accepted: 05/12/2017] [Indexed: 11/10/2022]
Abstract
Despite the worldwide high prevalence of total joint arthroplasty (TJA), life expectancy of prosthesis remains limited by mechanical and chemical constraint which promote wear debris production, surrounding tissues damage and finally prosthesis loosening. Such results could be amplified by neuro-myoelectrostimulation (NMES; widely used to reduce neuromuscular deficits observed following TJA surgery). It was previously described in an in vivo experiment that interactions between NMES and Ti6Al4V implant are deleterious for both implant and surrounding muscles. The purpose of the present study was to compare the biocompatibility of four common orthopedic biomaterials, two metallic (Ti6Al4V, CrCo) and two nonmetallic (PEEK, Al2 O3 ) alloys, fixed on rat tibial crest in which the surrounding muscles were electrostimulated. Muscle cell death rate was not found significantly increased, with or without electrical stimulation for nonmetallic implants. Contrary to Ti6Al4V alloy, the CrCo implant did not induce destruction of the surrounding muscle. However, cell viability decreased for both metallic alloys when NMES was applied but within a greater significant extent for Ti6Al4V implant. Otherwise, when NMES was applied, implant-to-bone adhesion significantly decreased for Ti6Al4V while no significant difference was found for PEEK, Al2 O3 , and CrCo. Statistical analyses reveal also a lesser adhesion strength for Ti6Al4V compared with CrCo when NMES was applied. Selecting the most suitable material in term of biocompatibility remains a major concern and non-metallic materials seems to be more appropriated in regard to electrical currents used for post TJA care. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1156-1164, 2018.
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Affiliation(s)
- Mathieu Lecocq
- Aix-Marseille Université, CNRS, Institut des Sciences du Mouvement: Etienne-Jules MAREY (UMR 7287), Equipe "Plasticité des Systèmes Nerveux et Musculaire" (PSNM), Faculté des Sciences du Sport, 13288 Marseille Cedex 09, France
| | - Marie-Solenne Felix
- Aix-Marseille Université, CNRS, Institut des Sciences du Mouvement: Etienne-Jules MAREY (UMR 7287), Equipe "Plasticité des Systèmes Nerveux et Musculaire" (PSNM), Faculté des Sciences du Sport, 13288 Marseille Cedex 09, France
| | - Cécile Bernard
- Aix-Marseille Université, CNRS, Institut des Sciences du Mouvement: Etienne-Jules MAREY (UMR 7287), Equipe "Plasticité des Systèmes Nerveux et Musculaire" (PSNM), Faculté des Sciences du Sport, 13288 Marseille Cedex 09, France
| | - Jean-Marc Linares
- Aix-Marseille Université, CNRS, Institut des Sciences du Mouvement: Etienne-Jules MAREY (UMR 7287), Equipe "Conception Bio-Inspirée" (CBI), IUT d'Aix-en-Provence, 13625 Aix-en-Provence Cedex, France
| | - Julien Chaves-Jacob
- Aix-Marseille Université, CNRS, Institut des Sciences du Mouvement: Etienne-Jules MAREY (UMR 7287), Equipe "Conception Bio-Inspirée" (CBI), IUT d'Aix-en-Provence, 13625 Aix-en-Provence Cedex, France
| | - Patrick Decherchi
- Aix-Marseille Université, CNRS, Institut des Sciences du Mouvement: Etienne-Jules MAREY (UMR 7287), Equipe "Plasticité des Systèmes Nerveux et Musculaire" (PSNM), Faculté des Sciences du Sport, 13288 Marseille Cedex 09, France
| | - Erick Dousset
- Aix-Marseille Université, CNRS, Institut des Sciences du Mouvement: Etienne-Jules MAREY (UMR 7287), Equipe "Plasticité des Systèmes Nerveux et Musculaire" (PSNM), Faculté des Sciences du Sport, 13288 Marseille Cedex 09, France
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