1
|
Calazans Neto JV, Kreve S, Valente MLDC, Reis ACD. Protein absorption on titanium surfaces treated with a high-power laser: A systematic review. J Prosthet Dent 2024; 131:591-597. [PMID: 35418317 DOI: 10.1016/j.prosdent.2022.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/09/2022] [Accepted: 03/10/2022] [Indexed: 11/25/2022]
Abstract
STATEMENT OF PROBLEM The surface of titanium dental implants treated with a high-power laser has been reported to favor osseointegration, mainly by altering protein uptake. Despite the large number of articles that address the topic, the heterogeneity of methodologies and results makes an understanding of the treatment's benefits difficult, and a systematic review is needed. PURPOSE The purpose of this systematic review was to further the knowledge on protein uptake on titanium surfaces that have undergone treatment with a high-power laser. MATERIAL AND METHODS This review followed the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines and was registered with the Open Science Framework (OSF) (osf.io/gcbna). Searches were performed in PubMed, Scopus, Web of Science, Embase, and Google Scholar databases. The articles were selected in 2 steps by 2 independent reviewers according to the previously selected eligibility criteria. The risk of bias was analyzed by using the Joanna Briggs Institute (JBI)-adapted quasi-experimental study evaluation tool. RESULTS The studies addressed have shown that applying a high-power laser to the implant surface, depending on its settings, generates topographical changes that can optimize the protein absorption process and thus accelerate the other biological processes. CONCLUSIONS The studies identified in this systematic review showed that surface treatment with a high-power laser represents a promising technique with a positive influence on protein uptake and osseointegration.
Collapse
Affiliation(s)
- João Vicente Calazans Neto
- Masters student, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Simone Kreve
- Doctoral student, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Mariana Lima da Costa Valente
- Postdoctoral student, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Andréa Cândido Dos Reis
- Professor, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, Brazil.
| |
Collapse
|
2
|
Kitajima H, Hirota M, Iwai T, Mitsudo K, Saruta J, Ogawa T. Synergistic Enhancement of Protein Recruitment and Retention via Implant Surface Microtopography and Superhydrophilicity in a Computational Fluid Dynamics Model. Int J Mol Sci 2023; 24:15618. [PMID: 37958605 PMCID: PMC10649348 DOI: 10.3390/ijms242115618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/12/2023] [Accepted: 10/19/2023] [Indexed: 11/15/2023] Open
Abstract
The exact mechanisms by which implant surface properties govern osseointegration are incompletely understood. To gain insights into this process, we examined alterations in protein and blood recruitment around screw implants with different surface topographies and wettability using a computational fluid dynamics (CFD) model. Compared with a smooth surface, a microrough implant surface reduced protein infiltration from the outer zone to the implant thread and interface zones by over two-fold. However, the microrough implant surface slowed blood flow in the interface zone by four-fold. As a result, compared with the smooth surface, the microrough surface doubled the protein recruitment/retention index, defined as the mass of proteins present in the area per unit time. Converting implant surfaces from hydrophobic to superhydrophilic increased the mass of protein infiltration 2-3 times and slowed down blood flow by up to two-fold in the implant vicinity for both smooth and microrough surfaces. The protein recruitment/retention index was highest at the implant interface when the implant surface was superhydrophilic and microrough. Thus, this study demonstrates distinct control of the mass and speed of protein and blood flow through implant surface topography, wettability, and their combination, significantly altering the efficiency of protein recruitment. Although microrough surfaces showed both positive and negative impacts on protein recruitment over smooth surfaces, superhydrophilicity was consistently positive regardless of surface topography.
Collapse
Affiliation(s)
- Hiroaki Kitajima
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA; (H.K.); (M.H.); (J.S.)
- Division of Regenerative and Reconstructive Sciences, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama 236-0004, Kanagawa, Japan; (T.I.); (K.M.)
| | - Makoto Hirota
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA; (H.K.); (M.H.); (J.S.)
- Division of Regenerative and Reconstructive Sciences, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA
- Department of Oral and Maxillofacial Surgery/Orthodontics, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Kanagawa, Japan
| | - Toshinori Iwai
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama 236-0004, Kanagawa, Japan; (T.I.); (K.M.)
| | - Kenji Mitsudo
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama 236-0004, Kanagawa, Japan; (T.I.); (K.M.)
| | - Juri Saruta
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA; (H.K.); (M.H.); (J.S.)
- Department of Education Planning, School of Dentistry, Kanagawa Dental University, 82 Inaoka, Yokosuka 238-8580, Kanagawa, Japan
| | - Takahiro Ogawa
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA; (H.K.); (M.H.); (J.S.)
- Division of Regenerative and Reconstructive Sciences, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA
| |
Collapse
|
3
|
Zarazir R, Mrad S, Aoun G, Sleiman AA, Mousallem M, Bassil J. Comparison of Osseointegration in Novel Laser-Textured and SLA Implants. Acta Inform Med 2023; 31:137-140. [PMID: 37711484 PMCID: PMC10498373 DOI: 10.5455/aim.2023.31.137-140] [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: 05/15/2023] [Accepted: 06/25/2023] [Indexed: 09/01/2023] Open
Abstract
Background Osseointegration is defined as the direct structural and functional connection between neo-formed bone and dental implants. Among the parameters suggested to predominantly influencing the establishment of a successful osseointegration is the quality of the implant surface, which may enhance the strength and speed of this biomechanical process. Objective The purpose of this study was to evaluate the ability of a novel laser-treated surface, compared to sandblasted, large-grit, acid-etched (SLA) surfaces, to enhance and accelerate implant integration in delayed implant placement.Methods: Thirty patients with two missing posterior teeth were enrolled in this study. Each patient received, at a randomly allocated site, an implant with a conventional SLA surface, and at a second site, an implant with laser-textured surface. A total of 60 tissue-level implants were subsequently placed. Implant stability (ISQ) was measured using resonance frequency analysis (RFA). ISQ was assessed at baseline (T0), 8 weeks (T1), and 12 weeks (T2) following implant placement. Results: There was a statistical difference in implant stability between laser-textured and SLA group at 12 weeks postoperatively. Implant stabilization showed a successful osseointegration with both surface types. Conclusion Both laser and SLA surface treatments had positive impacts on implant stabilization following delayed placement. Laser-treated surfaces presented higher values of osseointegration at 3 months postoperatively.
Collapse
Affiliation(s)
- Ralph Zarazir
- Attending Oral Surgeon, Military Medicine, Beirut, Lebanon
- Department of Restorative and Esthetic Dentistry, Faculty of Dental Medicine, Saint Joseph University of Beirut, Lebanon
| | - Stephanie Mrad
- Department of Oral Surgery, Faculty of Dental Medicine, Saint Joseph University of Beirut, Lebanon
| | - Georges Aoun
- Department of Oral Medicine and Maxillofacial Radiology, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon
| | | | - Marianne Mousallem
- High Institute of Public Health, Saint Joseph University of Beirut, Lebanon
| | - Joseph Bassil
- Department of Oral Surgery, Faculty of Dental Medicine, Saint Joseph University of Beirut, Lebanon
| |
Collapse
|
4
|
Ichioka Y, Derks J, Dahlén G, Berglundh T, Larsson L. Mechanical removal of biofilm on titanium discs: An in vitro study. J Biomed Mater Res B Appl Biomater 2021; 110:1044-1055. [PMID: 34897974 DOI: 10.1002/jbm.b.34978] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 09/13/2021] [Accepted: 09/29/2021] [Indexed: 01/03/2023]
Abstract
The objective of this in vitro study was to evaluate surface cleanness and cytocompatibility following mechanical instrumentation of biofilm-contaminated titanium surfaces. Titanium discs (non-modified [Ti(s)] and shot-blasted surfaces [Ti(r)]) contaminated with Streptococcus gordonii were instrumented using four different techniques: (i) gauze soaked in saline (GS), (ii) ultra-sonic device (US), (iii) rotating nickel-titanium brush (TiB), or (iv) air-polishing device (AP). Non-contaminated, untreated titanium disks were used as controls (C). Residual deposits and cytocompatibility for osteoblast-like cells were evaluated using scanning electron microscopy, immunofluorescence, and reverse transcriptase polymerase chain reaction. While the number of residual bacteria on Ti(s) discs was close to 0 in all treatment groups, significantly higher mean numbers of residual bacteria were observed on Ti(r) discs for GS (152.7 ± 75.7) and TiB (33.5 ± 22.2) than for US (0) and AP (0). Instrumentation with US resulted in deposition of foreign material (mean area% of foreign material: 3.0 ± 3.6% and 10.8 ± 9.6% for Ti(s) and Ti(r) discs, respectively). AP was the most effective decontamination procedure in reducing bacteria without depositing residual foreign material on Ti(r) discs. TiB and AP were superior methods in restoring cytocompatibility, although no method of mechanical decontamination resulted in pristine levels of cytocompatibility.
Collapse
Affiliation(s)
- Yuki Ichioka
- Department of Periodontology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Jan Derks
- Department of Periodontology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Gunnar Dahlén
- Department of Oral Microbiology and Immunology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Tord Berglundh
- Department of Periodontology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Lena Larsson
- Department of Periodontology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| |
Collapse
|
5
|
Risantoso T, Hidayat M, Suyuti H, Niam A. The Role of Instrumentation in the Healing Process of Spinal Tuberculosis: An Experimental Study. Open Access Maced J Med Sci 2021. [DOI: 10.3889/oamjms.2021.6065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Introduction: Tuberculosis is still commonly found in many developing countries. Spinal tuberculosis can cause vertebral deformity and neurological disorders. It was discovered thousands years ago and its management was aimed to eradicate infection and maintain the integrity of the vertebrae. Previously, the management of spinal TB was using drugs and external stabilization. Surgical techniques were developed afterwards to clean the infected vertebral segment. Because of the vertebral deformity remained inevitable and had impacts on neurological disorders, new paradigm had been developed by using instrumentation to stabilize the deformity of infected vertebral segment and to restore and maintain neurological function. TGF-β has a major role in angiogenesis in bone healing process. Spinal TB instrumentation uses metal devices composed of ions and particles that can interact each other so it could produce physical and chemical energy that is transmitted to the vertebrae. The energy is expected to enhance the biomolecular and biocellular activity of the body's immune cells so the healing process could be better.
Methods: An experimental study was carried out on New Zealand Rabbits which were given TB H37Rv strain infection in the vertebral body. Samples were divided into five groups namely control rabbits, infected rabbits without intervention, infected rabbits treated by instrumentation, infected rabbits given anti-tuberculosis drugs and infected rabbits treated by instrumentation and given drugs. Then the cytokine levels of TGF-β were evaluated and compared.
Results: The results showed a significant TGF- β level increase in infected rabbits given drugs alone and instrumentation alone compared to infected rabbits without intervention. There was a significant TGF- β increase in infected rabbits given drugs and treated by instrumentation compared to control rabbits and rabbits who received drugs only.
Conclusions: Instrumentation can improve the healing process in spinal tuberculosis by increasing the body's cytokine levels.
Collapse
|
6
|
Jastrzębski K, Białecki J, Jastrzębska A, Kaczmarek A, Para M, Niedzielski P, Bociaga D. Induced Biological Response in Contact with Ag-and Cu-Doped Carbon Coatings for Potential Orthopedic Applications. MATERIALS 2021; 14:ma14081861. [PMID: 33918582 PMCID: PMC8070217 DOI: 10.3390/ma14081861] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/05/2021] [Accepted: 04/06/2021] [Indexed: 12/12/2022]
Abstract
Silver and copper as additives of various biomaterials have been reported as the potential solutions for biomedicine applications, mostly because of inducing bactericidal effects. The application of those admixtures in diamond-like carbon (DLC) coatings may be desirable for orthopedic implants. In the present manuscript, the biological effect of coatings with up to about 7 at.% and 14 at.% of, respectively, Cu and Ag is compared. The morphology, chemical structure, and composition of films deposited on AISI 316LVM and Ti6Al7Nb is characterized. The live/dead analysis conducted with Escherichia coli shows a higher bactericidal potential of silver than copper. Although the Cu-doped coatings can positively affect the proliferation of Saos-2 and EA.hy926 cell lines, the results of XTT test are on the verge of 70% of viability. Biological effect of silver on EA.hy926 cell lines is negative but that admixture ensures high proliferation of osteoblasts in contact with coatings deposited on titanium alloy (over 20% better than for substrate material). In that case, the viability is reaching about 85% for Ag-doped coatings on AISI 316LVM and 75% on Ti6Al7Nb. The results indicate that for the sake of bactericidal coatings that may promote osteointegration, the candidates are DLC with silver content no higher than 10 at.%.
Collapse
Affiliation(s)
- Krzysztof Jastrzębski
- Institute of Materials Science and Engineering, Lodz University of Technology, 1/15 Stefanowskiego St., 90-924 Lodz, Poland; (A.J.); (P.N.); (D.B.)
- Correspondence:
| | - Jerzy Białecki
- Ortopaedic Clinic of Centre of Postgraduate Medical Education in Otwock, Konarskiego 13, 05-400 Otwock, Poland; (J.B.); (M.P.)
| | - Aleksandra Jastrzębska
- Institute of Materials Science and Engineering, Lodz University of Technology, 1/15 Stefanowskiego St., 90-924 Lodz, Poland; (A.J.); (P.N.); (D.B.)
| | - Anna Kaczmarek
- Lukasiewicz Research Network-Textile Research Institute, Brzezinska 5/15, 92-103 Lodz, Poland;
| | - Marcin Para
- Ortopaedic Clinic of Centre of Postgraduate Medical Education in Otwock, Konarskiego 13, 05-400 Otwock, Poland; (J.B.); (M.P.)
| | - Piotr Niedzielski
- Institute of Materials Science and Engineering, Lodz University of Technology, 1/15 Stefanowskiego St., 90-924 Lodz, Poland; (A.J.); (P.N.); (D.B.)
| | - Dorota Bociaga
- Institute of Materials Science and Engineering, Lodz University of Technology, 1/15 Stefanowskiego St., 90-924 Lodz, Poland; (A.J.); (P.N.); (D.B.)
| |
Collapse
|
7
|
Gawęda M, Długoń E, Jeleń P, Jadach R, Wajda A, Nocuń M, Szymańska M, Sitarz M. Examination of doped zirconia-based layers deposited on metallic substrates. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.04.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
8
|
Adhesion profile and differentiation capacity of human adipose tissue derived mesenchymal stem cells grown on metal ion (Zn, Ag and Cu) doped hydroxyapatite nano-coated surfaces. Colloids Surf B Biointerfaces 2017; 155:415-428. [DOI: 10.1016/j.colsurfb.2017.04.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 04/06/2017] [Accepted: 04/08/2017] [Indexed: 01/31/2023]
|
9
|
Castillo-Dalí G, Castillo-Oyagüe R, Batista-Cruzado A, López-Santos C, Rodríguez-González-Elipe A, Saffar JL, Lynch CD, Gutiérrez-Pérez JL, Torres-Lagares D. Reliability of new poly (lactic-co-glycolic acid) membranes treated with oxygen plasma plus silicon dioxide layers for pre-prosthetic guided bone regeneration processes. Med Oral Patol Oral Cir Bucal 2017; 22:e242-e250. [PMID: 28160588 PMCID: PMC5359707 DOI: 10.4317/medoral.21512] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Accepted: 11/03/2016] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The use of cold plasmas may improve the surface roughness of poly(lactic-co-glycolic) acid (PLGA) membranes, which may stimulate the adhesion of osteogenic mediators and cells, thus accelerating the biodegradation of the barriers. Moreover, the incorporation of metallic-oxide particles to the surface of these membranes may enhance their osteoinductive capacity. Therefore, the aim of this paper was to evaluate the reliability of a new PLGA membrane after being treated with oxygen plasma (PO2) plus silicon dioxide (SiO2) layers for guided bone regeneration (GBR) processes. MATERIAL AND METHODS Circumferential bone defects (diameter: 11 mm; depth: 3 mm) were created on the top of eight experimentation rabbits' skulls and were randomly covered with: (1) PLGA membranes (control), or (2) PLGA/PO2/SiO2 barriers. The animals were euthanized two months afterwards. A micromorphologic study was then performed using ROI (region of interest) colour analysis. Percentage of new bone formation, length of mineralised bone, concentration of osteoclasts, and intensity of ostheosynthetic activity were assessed and compared with those of the original bone tissue. The Kruskal-Wallis test was applied for between-group com Asignificance level of a=0.05 was considered. RESULTS The PLGA/PO2/SiO2 membranes achieved the significantly highest new bone formation, length of mineralised bone, concentration of osteoclasts, and ostheosynthetic activity. The percentage of regenerated bone supplied by the new membranes was similar to that of the original bone tissue. Unlike what happened in the control group, PLGA/PO2/SiO2 membranes predominantly showed bone layers in advanced stages of formation. CONCLUSIONS The addition of SiO2 layers to PLGA membranes pre-treated with PO2 improves their bone-regeneration potential. Although further research is necessary to corroborate these conclusions in humans, this could be a promising strategy to rebuild the bone architecture prior to rehabilitate edentulous areas.
Collapse
Affiliation(s)
- G Castillo-Dalí
- Department of Buccofacial Prostheses, Faculty of Dentistry, Complutense University of Madrid UCM, Pza. Ramón y Cajal, s/n, E-28040, Madrid, Spain,
| | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Castillo-Dalí G, Castillo-Oyagüe R, Terriza A, Saffar JL, Batista A, Barranco A, Cabezas-Talavero J, Lynch CD, Barouk B, Llorens A, Sloan AJ, Cayón RV, Gutiérrez-Pérez JL, Torres-Lagares D. In vivo comparative model of oxygen plasma and nanocomposite particles on PLGA membranes for guided bone regeneration processes to be applied in pre-prosthetic surgery: a pilot study. J Dent 2016; 42:1446-57. [PMID: 24814137 DOI: 10.1016/j.jdent.2014.04.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 04/22/2014] [Accepted: 04/28/2014] [Indexed: 12/01/2022] Open
Abstract
OBJECTIVES To evaluate the bone regeneration potential of a new membrane fabricated with polyglycolide acid (PLGA) after being treated with oxygen plasma (PO2), and/or being functionalized with silicon dioxide (SiO2) or titanium dioxide (TiO2) nanoparticles. METHODS Bone defects (5 mm 3 mm) were produced on the top of 3 experimentation rabbits’ skulls and were covered with variously modified PLGA scaffolds. After the animals were sacrificed, neoformed bone (%), mineralized bone (mm), bone resorption (%), osteoclasts/mm2, and intensity of osteosynthetic activity, were assessed under microscope. RESULTS The following groups were formed depending on the type of membrane: PLGA (control); PLGA/PO2; PLGA/SiO2; PLGA/TiO2; PLGA/PO2/SiO2; and PLGA/PO2/TiO2. The histological sections showed bone layers in advanced stages of formation. The highest percentages of neoformed bone corresponded to PLGA/PO2/SiO2 membranes (59.07%; p = 0.31) followed by PLGA/PO2 barriers (50.27%). The controls showed the lowest mineralization (13.89 mm; p = 0.24). PLGA/TiO2 scaffolds exhibited the least bone resorption (4.45%; p = 0.77) and osteoclasts/ mm2 (1.58; p = 0.86). PLGA/SiO2 and PLGA/TiO2 membranes stimulated the maximum osteosynthetic activity. CONCLUSIONS The treatment of PLGA barriers with PO2 increased bone regeneration in rabbits. When comparing the effect of PO2/SiO2 and PO2/TiO2, higher percentages of neoformed bone were encountered after silicon-dioxide coating. CLINICAL SIGNIFICANCE The incorporation of SiO2 nanoparticles onto PO2-treated PLGA membranes was the most promising technique out of those investigated to promote bone formation in rabbits. The addition of SiO2 or TiO2 layers to PLGA substrates may stimulate the osteosynthetic activity, which might be useful to restore bone dimensions in preparation for naturally appearing dental prostheses.
Collapse
|
11
|
Ritz U, Nusselt T, Sewing A, Ziebart T, Kaufmann K, Baranowski A, Rommens PM, Hofmann A. The effect of different collagen modifications for titanium and titanium nitrite surfaces on functions of gingival fibroblasts. Clin Oral Investig 2016; 21:255-265. [PMID: 26969500 DOI: 10.1007/s00784-016-1784-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 03/03/2016] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Targeted modifications of the bulk implant surfaces using bioactive agents provide a promising tool for improvement of the long-term bony and soft tissue integration of dental implants. In this study, we assessed the cellular responses of primary human gingival fibroblasts (HGF) to different surface modifications of titanium (Ti) and titanium nitride (TiN) alloys with type I collagen or cyclic-RGDfK-peptide in order to define a modification improving long-term implants in dental medicine. MATERIALS AND METHODS Employing Ti and TiN implants, we compared the performance of simple dip coating and anodic immobilization of type I collagen that provided collagen layers of two different thicknesses. HGF were seeded on the different coated implants, and adhesion, proliferation, and gene expression were analyzed. RESULTS Although there were no strong differences in initial cell adhesion between the groups at 2 and 4 hours, we found that all surface modifications induced higher proliferation rates as compared to the unmodified controls. Consistently, gene expression levels of cell adhesion markers (focal adhesion kinase (FAK), integrin beta1, and vinculin), cell differentiation markers (FGFR1, TGFb-R1), extracellular protein markers (type I collagen, vimentin), and cytoskeletal protein marker aktinin-1 were consistently higher in all surface modification groups at two different time points of investigation as compared to the unmodified controls. CONCLUSION Our results indicate that simple dip coating of Ti and TiN with collagen is sufficient to induce in vitro cellular responses that are comparable to those of more reliable coating methods like anodic adsorption, chemical cross-linking, or RGD coating. TiN alloys do not possess any positive or adverse effects on HGF. CLINICAL RELEVANCE Our results demonstrate a simple, yet effective, method for collagen coating on titanium implants to improve the long term integration and stability of dental implants.
Collapse
Affiliation(s)
- U Ritz
- Department of Orthopedics and Traumatology, University Medical Centre of the Johannes Gutenberg University, Langenbeckstr. 1, 55131, Mainz, Germany
| | - T Nusselt
- Department of Orthopedics and Traumatology, University Medical Centre of the Johannes Gutenberg University, Langenbeckstr. 1, 55131, Mainz, Germany
| | - A Sewing
- Biomet Deutschland GmbH, Berlin, Germany
| | - T Ziebart
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | | | - A Baranowski
- Department of Orthopedics and Traumatology, University Medical Centre of the Johannes Gutenberg University, Langenbeckstr. 1, 55131, Mainz, Germany
| | - P M Rommens
- Department of Orthopedics and Traumatology, University Medical Centre of the Johannes Gutenberg University, Langenbeckstr. 1, 55131, Mainz, Germany
| | - Alexander Hofmann
- Department of Orthopedics and Traumatology, University Medical Centre of the Johannes Gutenberg University, Langenbeckstr. 1, 55131, Mainz, Germany.
| |
Collapse
|
12
|
Castillo-Dalí G, Castillo-Oyagüe R, Terriza A, Saffar JL, Batista-Cruzado A, Lynch CD, Sloan AJ, Gutiérrez-Pérez JL, Torres-Lagares D. 'Pre-prosthetic use of poly(lactic-co-glycolic acid) membranes treated with oxygen plasma and TiO2 nanocomposite particles for guided bone regeneration processes'. J Dent 2016; 47:71-9. [PMID: 26850906 DOI: 10.1016/j.jdent.2016.01.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 01/22/2016] [Accepted: 01/31/2016] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES Guided bone regeneration (GBR) processes are frequently necessary to achieve appropriate substrates before the restoration of edentulous areas. This study aimed to evaluate the bone regeneration reliability of a new poly-lactic-co-glycolic acid (PLGA) membrane after treatment with oxygen plasma (PO2) and titanium dioxide (TiO2) composite nanoparticles. METHODS Circumferential bone defects (diameter: 10mm; depth: 3mm) were created on the parietal bones of eight experimentation rabbits and were randomly covered with control membranes (Group 1: PLGA) or experimental membranes (Group 2: PLGA/PO2/TiO2). The animals were euthanized two months afterwards, and a morphologic study was then performed under microscope using ROI (region of interest) colour analysis. Percentage of new bone formation, length of mineralised bone formed in the grown defects, concentration of osteoclasts, and intensity of osteosynthetic activity were assessed. Comparisons among the groups and with the original bone tissue were made using the Kruskal-Wallis test. The level of significance was set in advance at a=0.05. RESULTS The experimental group recorded higher values for new bone formation, mineralised bone length, and osteoclast concentration; this group also registered the highest osteosynthetic activity. Bone layers in advanced formation stages and low proportions of immature tissue were observed in the study group. CONCLUSIONS The functionalised membranes showed the best efficacy for bone regeneration. CLINICAL SIGNIFICANCE The addition of TiO2 nanoparticles onto PLGA/PO2 membranes for GBR processes may be a promising technique to restore bone dimensions and anatomic contours as a prerequisite to well-supported and natural-appearing prosthetic rehabilitations.
Collapse
Affiliation(s)
- Gabriel Castillo-Dalí
- Department of Stomatology, Faculty of Dentistry, University of Seville (US), C/Avicena, s/n, 41009 Seville, Spain
| | - Raquel Castillo-Oyagüe
- Department of Buccofacial Prostheses, Faculty of Dentistry, Complutense University of Madrid (UCM), Pza. Ramón y Cajal, s/n, 28040 Madrid, Spain.
| | - Antonia Terriza
- Institute of Materials Sciences, Advanced Center of Scientific Research (CSIC), Avda. Américo Vespuccio, no. 49, Isla de la Cartuja, 41092 Seville, Spain
| | - Jean-Louis Saffar
- Faculté de Chirurgie Dentaire, Université Paris V- Descartes, rue Maurice Arnoux, no. 1, 92120 Montrouge, Paris, France
| | - Antonio Batista-Cruzado
- Faculté de Chirurgie Dentaire, Université Paris V- Descartes, rue Maurice Arnoux, no. 1, 92120 Montrouge, Paris, France
| | - Christopher D Lynch
- School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, CF14 4XY, Cardiff, Wales, UK
| | - Alastair J Sloan
- School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, CF14 4XY, Cardiff, Wales, UK
| | - José-Luis Gutiérrez-Pérez
- Department of Stomatology, Faculty of Dentistry, University of Seville (US), C/Avicena, s/n, 41009 Seville, Spain
| | - Daniel Torres-Lagares
- Department of Stomatology, Faculty of Dentistry, University of Seville (US), C/Avicena, s/n, 41009 Seville, Spain
| |
Collapse
|
13
|
Seo SY, Min SK, Bae HK, Roh D, Kang HK, Roh S, Lee S, Chun GS, Chung DJ, Min BM. A laminin-2-derived peptide promotes early-stage peripheral nerve regeneration in a dual-component artificial nerve graft. J Tissue Eng Regen Med 2012; 7:788-800. [DOI: 10.1002/term.1468] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Revised: 10/10/2011] [Accepted: 01/05/2012] [Indexed: 11/11/2022]
Affiliation(s)
- S. Y. Seo
- Department of Microbiology; Dong-A University College of Medicine; Busan; Republic of Korea
| | - S.-K. Min
- Department of Oral and Maxillofacial Surgery; Seoul National University School of Dentistry; Seoul; Republic of Korea
| | - H. K. Bae
- Department of Polymer Science and Engineering; Sungkyunkwan University; Suwon; Republic of Korea
| | - D. Roh
- Department of Polymer Science and Engineering; Sungkyunkwan University; Suwon; Republic of Korea
| | - H. K. Kang
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, DRI, and BK21 CLS; Seoul National University School of Dentistry; Republic of Korea
| | - S. Roh
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, DRI, and BK21 CLS; Seoul National University School of Dentistry; Republic of Korea
| | - S. Lee
- Department of Cell and Developmental Biology; Seoul National University School of Dentistry; Seoul; Republic of Korea
| | - G.-S. Chun
- Department of Oral Physiology; Dankook University School of Dentistry; Cheonan; Republic of Korea
| | - D.-J. Chung
- Department of Polymer Science and Engineering; Sungkyunkwan University; Suwon; Republic of Korea
| | - B.-M. Min
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, DRI, and BK21 CLS; Seoul National University School of Dentistry; Republic of Korea
| |
Collapse
|
14
|
Sugita Y, Ishizaki K, Iwasa F, Ueno T, Minamikawa H, Yamada M, Suzuki T, Ogawa T. Effects of pico-to-nanometer-thin TiO2 coating on the biological properties of microroughened titanium. Biomaterials 2011; 32:8374-84. [PMID: 21840046 DOI: 10.1016/j.biomaterials.2011.07.077] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Accepted: 07/26/2011] [Indexed: 11/27/2022]
Abstract
The independent, genuine role of surface chemistry in the biological properties of titanium is unknown. Although microtopography has been established as a standard surface feature in osseous titanium implants, unfavorable behavior and reactions of osteogenic cells are still observed on the surfaces. To further enhance the biological properties of microfeatured titanium surfaces, this study tested the hypotheses that (1) the surface chemistry of microroughened titanium surfaces can be controllably varied by coating with a very thin layer of TiO(2), without altering the existing topographical and roughness features; and (2) the change in the surface chemistry affects the biological properties of the titanium substrates. Using a slow-rate sputter deposition of molten TiO(2) nanoparticles, acid-etched microroughened titanium surfaces were coated with a TiO(2) layer of 300-pm to 6.3-nm thickness that increased the surface oxygen levels without altering the existing microtopography. The attachment, spreading behavior, and proliferation of osteoblasts, which are considered to be significantly impaired on microroughened surfaces compared with relatively smooth surfaces, were considerably increased on TiO(2)-coated microroughened surfaces. The rate of osteoblastic differentiation was represented by the increased levels of alkaline phosphatase activity and mineral deposition as well as by the upregulated expression of bone-related genes. These biological effects were exponentially correlated with the thickness of TiO(2) and surface oxygen percentage, implying that even a picometer-thin TiO(2) coating is effective in rapidly increasing the biological property of titanium followed by an additional mild increase or plateau induced by a nanometer-thick coating. These data suggest that a super-thin TiO(2) coating of pico-to-nanometer thickness enhances the biological properties of the proven microroughened titanium surfaces by controllably and exclusively modulating their surface chemistry while preserving the existing surface morphology. The improvements in proliferation and differentiation of osteoblasts attained by this chemical modification is of great significance, providing a new insight into how to develop new implant surfaces for better osseointegration, based on the established microtopographic surfaces.
Collapse
Affiliation(s)
- Yoshihiko Sugita
- Laboratory for Bone and Implant Sciences (LBIS), The Jane and Jerry Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, Biomaterials and Hospital Dentistry, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA
| | | | | | | | | | | | | | | |
Collapse
|
15
|
Mastrangelo F, Fioravanti G, Quaresima R, Vinci R, Gherlone E. Self-Assembled Monolayers (SAMs): Which Perspectives in Implant Dentistry? ACTA ACUST UNITED AC 2011. [DOI: 10.4236/jbnb.2011.225064] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
16
|
Min SK, Lee SC, Hong SD, Chung CP, Park WH, Min BM. The effect of a laminin-5-derived peptide coated onto chitin microfibers on re-epithelialization in early-stage wound healing. Biomaterials 2010; 31:4725-30. [PMID: 20303583 DOI: 10.1016/j.biomaterials.2010.02.045] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2010] [Accepted: 02/17/2010] [Indexed: 10/19/2022]
Abstract
Considerable effort has been directed towards regenerating defective tissues using tissue-engineering methods. Recently, peptides have been recognized as a valuable scientific tool in the field of tissue-engineering. The PPFLMLLKGSTR motif of the human laminin-5 alpha3 chain has been previously reported to promote keratinocyte survival; however, the in vivo effects of the PPFLMLLKGSTR motif have not yet been studied. These studies raised the hypothesis that a laminin-5-derived peptide can promote wound healing by accelerating re-epithelialization in vivo. To examine this hypothesis, we applied chitin microfibrous matrices coated with the PPFLMLLKGSTR motif in both rat and rabbit full-thickness cutaneous wound models. Compared with vehicle-treated and peptide-treated cutaneous wounds, the application significantly promoted early-stage wound healing by accelerating re-epithelialization, notably reduced inflammatory cell infiltration, and prominently enhanced fibroblast proliferation. These findings support our hypothesis that the PPFLMLLKGSTR motif acts as a very effective wound healing accelerator by enhancing re-epithelialization.
Collapse
Affiliation(s)
- Seung-Ki Min
- Department of Oral and Maxillofacial Surgery, Seoul National University School of Dentistry, Seoul 110-749, Republic of Korea.
| | | | | | | | | | | |
Collapse
|
17
|
Boudesocque S, Dargaud O, Stievano L, Méthivier C, Lambert JF, Coradin T, Pradier CM. Non-destructive investigation of fibronectin adsorption on titanium surfaces using PM-RAIRS: effect of surface hydroxylation. SURF INTERFACE ANAL 2010. [DOI: 10.1002/sia.3295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
18
|
Raman A, Quiñones R, Barriger L, Eastman R, Parsi A, Gawalt ES. Understanding organic film behavior on alloy and metal oxides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:1747-54. [PMID: 20039608 PMCID: PMC2818877 DOI: 10.1021/la904120s] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Native oxide surfaces of stainless steel 316L and Nitinol alloys and their constituent metal oxides, namely nickel, chromium, molybdenum, manganese, iron, and titanium, were modified with long chain organic acids to better understand organic film formation. The adhesion and stability of films of octadecylphosphonic acid, octadecylhydroxamic acid, octadecylcarboxylic acid, and octadecylsulfonic acid on these substrates were examined in this study. The films formed on these surfaces were analyzed by diffuse reflectance infrared Fourier transform spectroscopy, contact angle goniometry, atomic force microscopy, and matrix-assisted laser desorption ionization mass spectrometry. The effect of the acidity of the organic moiety and substrate composition on the film characteristics and stability is discussed. Interestingly, on the alloy surfaces, the presence of less reactive metal sites does not inhibit film formation.
Collapse
|
19
|
Implementation of new software for fast screening of cell compatibility on surface modifications using low-contrast time-lapsed microscopy. Clin Oral Investig 2009; 14:499-506. [DOI: 10.1007/s00784-009-0339-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2009] [Accepted: 08/07/2009] [Indexed: 11/27/2022]
|
20
|
Chen J, Ulerich J, Abelev E, Fasasi A, Arnold C, Soboyejo W. An investigation of the initial attachment and orientation of osteoblast-like cells on laser grooved Ti-6Al-4V surfaces. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2009. [DOI: 10.1016/j.msec.2008.11.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
21
|
Influence of bisphosphonates on endothelial cells, fibroblasts, and osteogenic cells. Clin Oral Investig 2009; 14:35-41. [DOI: 10.1007/s00784-009-0266-4] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2008] [Accepted: 03/05/2009] [Indexed: 11/26/2022]
|
22
|
Hisbergues M, Vendeville S, Vendeville P. Zirconia: Established facts and perspectives for a biomaterial in dental implantology. J Biomed Mater Res B Appl Biomater 2009; 88:519-29. [PMID: 18561291 DOI: 10.1002/jbm.b.31147] [Citation(s) in RCA: 176] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Currently, zirconia is widely used in biomedical area as a material for prosthetic devices because of its good mechanical and chemical properties. Largely employed in clinical area for total hip replacement, zirconia ceramics (ZrO(2)) are becoming a prevalent biomaterial in dentistry and dental implantology. Although titanium is used in dental implantology currently, there is a trend to develop new ceramic-based implants as an alternative to monolithic titanium. This article reviews the evolution and development of zirconia through data published between 1963 and January 2008 in English language. Articles were identified via a MEDLINE search using the following keywords: zirconia, zirconia/biocompatibility, zirconia/osseointegration, zirconia/periointegration, zirconia/review, and zirconia/bacterial adhesion or colonization. This review of the literature aims at highlighting and discussing zirconia properties in biological systems for their future use in dental implantology. In conclusion, zirconia with its interesting microstructural properties has been confirmed to be a material of choice for the "new generation" of implants, thanks to its biocompatibility, osseoconductivity, tendency to reduce plaque accumulation, and interaction with soft tissues, which leads to periointegration. However, scientific studies are promptly needed to fulfill gaps like long-term clinical evaluations of "all zirconia implants," currently leading to propose an alternative use of "hybrid systems" (i.e., titanium screw with zirconia collar) and also bacterial colonization of zirconia. Moreover, there is a permanent need for consistent information about topography and chemistry of zirconia allowing easier cross-product comparisons of clinical devices.
Collapse
Affiliation(s)
- Michael Hisbergues
- Pasteur Institute of Lille, Laboratory of Lactic Acid Bacteria and Mucosal Immunology, Lille, France
| | | | | |
Collapse
|
23
|
Nakamura M, Nagai A, Tanaka Y, Sekijima Y, Yamashita K. Polarized hydroxyapatite promotes spread and motility of osteoblastic cells. J Biomed Mater Res A 2009; 92:783-90. [DOI: 10.1002/jbm.a.32404] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
24
|
Douglas T, Haugen HJ. Coating of polyurethane scaffolds with collagen: comparison of coating and cross-linking techniques. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:2713-2719. [PMID: 18283534 DOI: 10.1007/s10856-008-3393-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2007] [Accepted: 01/22/2008] [Indexed: 05/25/2023]
Abstract
Collagen has been coated successfully onto numerous hydrophilic polymer scaffolds to improve cell adhesion. Due to the hydrophobic nature of thermoplastic polyurethane (TPU), coating with aqueous collagen solution is problematic for such scaffolds. This study facilitated the coating of TPU with collagen and compared cross-linking and coating techniques. Three different cross-linking methods were compared. Both thermal and glutaraldehyde methods showed proof of cross-linking; however glutaraldehyde seemed to be superior to the other methods. The use of human urine as a wetting agent and the chemical glutaraldehyde had no effect on a cytotoxicity test performed by means of a WST-1 assay with a fibroblastic cell line. Three different coating techniques for porous TPU scaffolds were also investigated: ultrasound, pressurized air and injection. Of these, injection performed best. This method facilitated a coating of 100% of the porous scaffolds examined, which was verified by staining, FTIR and SEM.
Collapse
Affiliation(s)
- Timothy Douglas
- Institute of Material Science, Max Bergmann Center of Biomaterials, Technische Universität Dresden, Germany.
| | | |
Collapse
|
25
|
Los recubrimientos de hidroxiapatita en las prótesis articulares. Rev Esp Cir Ortop Traumatol (Engl Ed) 2008. [DOI: 10.1016/s1888-4415(08)74805-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
26
|
Faig-Martí J, Gil-Mur F. Hydroxyapatite coatings in prosthetic joints. Rev Esp Cir Ortop Traumatol (Engl Ed) 2008. [DOI: 10.1016/s1988-8856(08)70080-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
27
|
Tsukimura N, Kojima N, Kubo K, Att W, Takeuchi K, Kameyama Y, Maeda H, Ogawa T. The effect of superficial chemistry of titanium on osteoblastic function. J Biomed Mater Res A 2008; 84:108-16. [PMID: 17600332 DOI: 10.1002/jbm.a.31422] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The surface topography and chemistry of titanium are postulated to be two major factors that affect the osseointegration capacity of titanium implants. However, it is extremely difficult to control one factor without changing the other, which prevents the isolation of the genuine effect of one factor. This study aimed to determine whether surface chemistry of titanium alone affects osteoblastic function. Two different titanium surfaces were prepared by sputter depositioning of titanium (Ti; 99.99% purity) or titanium dioxide (TiO2; 99.99% purity) (50-nm thick for each) onto machined commercially pure titanium disks. Rat bone marrow-derived osteoblastic cells were cultured on each of the two surfaces. TiO2 surface showed 4.4 times higher elemental oxygen concentration and higher water wettability than Ti surface. Scanning electron microscopic and atomic force microscopic examination revealed no differences in surface topography and roughness values between the two surfaces. The cell proliferated more on TiO2 than on Ti by up to 60%. Although the expression of collagen I gene increased more rapidly on TiO2 at early culture stage of day 3, the late stage marker genes for osteoblastic differentiation, including osteopontin and osteocalcin, were not modulated between the two cultures. The alkaline phosphatase positive area and mineralized nodule area were approximately two times larger on TiO2 than on Ti. In conclusion, titanium materials having different superficial chemistry, that is, titanium or titanium dioxide, may exert different biological capacity of osteoblasts; titanium dioxide may induce superior osteoconduction, primarily because of the increased osteoblastic proliferation.
Collapse
Affiliation(s)
- Naoki Tsukimura
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, Biomaterials and Hospital Dentistry, UCLA School of Dentistry, Los Angeles, California 90095-1668, USA
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Heydari M, Hasuda H, Sakuragi M, Yoshida Y, Suzuki K, Ito Y. Modification of the titan surface with photoreactive gelatin to regulate cell attachment. J Biomed Mater Res A 2007; 83:906-914. [PMID: 17567853 DOI: 10.1002/jbm.a.31368] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Titan (TiO2) was modified with photoreactive gelatin in order to regulate the attachment of cells. Photoreactive gelatin, which was synthesized by the coupling reaction of gelatin with N-(4-azidobenzoyloxy) succinimide, was immobilized onto the n-octadecyltrimethoxysilane (ODS)-TiO2 or TiO2 surface by ultraviolet irradiation both in the absence and presence of a photo mask. In the absence of a photo mask, the modified titan surface was analyzed by measuring water contact angles and X-ray photoelectron spectroscopy (XPS). The result showed that ODS hydrophobilized the titan surface, and that the immobilization of gelatin affected the surface's hydrophilicity. XPS shows that titan was covered with organic material, including ODS and gelatin. With the photo mask in place, micropatterning of the gelatin was performed. This pattern was confirmed by optical microscopy and time-of-flight secondary ion-mass spectroscopy (TOF-SIMS). Monkey COS-7 epithelial cells were cultured on the unpattern- and pattern-immobilized plate. A significantly higher degree of cell attachment was found on the photoreactive gelatin-immobilized regions than on those that were not immobilized. It was concluded that the cellular pattern on titan was regulated by immobilized photoreactive gelatin.
Collapse
Affiliation(s)
- Mojgan Heydari
- Regenerative Medical Bioreactor Project, Kanagawa Academy of Science and Technology, KSP East 309, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
| | - Hirokazu Hasuda
- Regenerative Medical Bioreactor Project, Kanagawa Academy of Science and Technology, KSP East 309, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
| | - Makoto Sakuragi
- Regenerative Medical Bioreactor Project, Kanagawa Academy of Science and Technology, KSP East 309, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
| | - Yasuhiro Yoshida
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences 2-5-1 Shikata-cho, Okayama 700-8525, Japan
| | - Kazuomi Suzuki
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences 2-5-1 Shikata-cho, Okayama 700-8525, Japan
| | - Yoshihiro Ito
- Regenerative Medical Bioreactor Project, Kanagawa Academy of Science and Technology, KSP East 309, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
- Nano Medical Engineering Laboratory, RIKEN (The Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| |
Collapse
|
29
|
Graziano A, d'Aquino R, Cusella-De Angelis MG, Laino G, Piattelli A, Pacifici M, De Rosa A, Papaccio G. Concave pit-containing scaffold surfaces improve stem cell-derived osteoblast performance and lead to significant bone tissue formation. PLoS One 2007; 2:e496. [PMID: 17551577 PMCID: PMC1876259 DOI: 10.1371/journal.pone.0000496] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2007] [Accepted: 05/09/2007] [Indexed: 01/02/2023] Open
Abstract
Background Scaffold surface features are thought to be important regulators of stem cell performance and endurance in tissue engineering applications, but details about these fundamental aspects of stem cell biology remain largely unclear. Methodology and Findings In the present study, smooth clinical-grade lactide-coglyolic acid 85:15 (PLGA) scaffolds were carved as membranes and treated with NMP (N-metil-pyrrolidone) to create controlled subtractive pits or microcavities. Scanning electron and confocal microscopy revealed that the NMP-treated membranes contained: (i) large microcavities of 80–120 µm in diameter and 40–100 µm in depth, which we termed primary; and (ii) smaller microcavities of 10–20 µm in diameter and 3–10 µm in depth located within the primary cavities, which we termed secondary. We asked whether a microcavity-rich scaffold had distinct bone-forming capabilities compared to a smooth one. To do so, mesenchymal stem cells derived from human dental pulp were seeded onto the two types of scaffold and monitored over time for cytoarchitectural characteristics, differentiation status and production of important factors, including bone morphogenetic protein-2 (BMP-2) and vascular endothelial growth factor (VEGF). We found that the microcavity-rich scaffold enhanced cell adhesion: the cells created intimate contact with secondary microcavities and were polarized. These cytological responses were not seen with the smooth-surface scaffold. Moreover, cells on the microcavity-rich scaffold released larger amounts of BMP-2 and VEGF into the culture medium and expressed higher alkaline phosphatase activity. When this type of scaffold was transplanted into rats, superior bone formation was elicited compared to cells seeded on the smooth scaffold. Conclusion In conclusion, surface microcavities appear to support a more vigorous osteogenic response of stem cells and should be used in the design of therapeutic substrates to improve bone repair and bioengineering applications in the future.
Collapse
Affiliation(s)
- Antonio Graziano
- Dipartimento di Medicina Sperimentale, Sezione di Istologia ed Embriologia, Secondo Ateneo di Napoli, Naples, Italy
- * To whom correspondence should be addressed. E-mail:
| | - Riccardo d'Aquino
- Dipartimento di Medicina Sperimentale, Sezione di Istologia ed Embriologia, Secondo Ateneo di Napoli, Naples, Italy
- Dipartimento di Discipline Odontostomatologiche, Ortodontiche e Chirurgiche, Secondo Ateneo di Napoli, Naples, Italy
| | | | - Gregorio Laino
- Dipartimento di Discipline Odontostomatologiche, Ortodontiche e Chirurgiche, Secondo Ateneo di Napoli, Naples, Italy
| | - Adriano Piattelli
- Dipartimento di Scienze Odontostomatologiche, Università degli Studi “G. d'Annunzio”, Chieti, Italy
| | - Maurizio Pacifici
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - Alfredo De Rosa
- Dipartimento di Discipline Odontostomatologiche, Ortodontiche e Chirurgiche, Secondo Ateneo di Napoli, Naples, Italy
| | - Gianpaolo Papaccio
- Dipartimento di Medicina Sperimentale, Sezione di Istologia ed Embriologia, Secondo Ateneo di Napoli, Naples, Italy
| |
Collapse
|
30
|
Chen J, Mwenifumbo S, Langhammer C, McGovern JP, Li M, Beye A, Soboyejo WO. Cell/surface interactions and adhesion on Ti-6Al-4V: Effects of surface texture. J Biomed Mater Res B Appl Biomater 2007; 82:360-73. [PMID: 17245741 DOI: 10.1002/jbm.b.30741] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
This paper presents the results of an experimental study of the effects of surface texture on the interactions between human osteo-sarcoma (HOS) cells and Ti-6Al-4V. These include the Ti-6Al-4V with polished (smooth); Al(2)O(3) blasted (rough); and laser micro-grooved geometries with controlled spacings and depths. Immuno-fluorescence staining of adhesion proteins (actin and vinculin) was used to study the spreading and adhesion of HOS cells in 2 day culture experiments. Quantitative measures of adhesion were also obtained using an enzymatic detachment assay. The results are discussed within the context of existing theories of cell adhesion. The implications of the results are also examined for the design of textured surfaces in biomedical systems.
Collapse
Affiliation(s)
- J Chen
- Princeton Institute of Science and Technology of Materials, Princeton University, Princeton, New Jersey 08544
| | | | | | | | | | | | | |
Collapse
|
31
|
Graziano A, d'Aquino R, Cusella-De Angelis MG, De Francesco F, Giordano A, Laino G, Piattelli A, Traini T, De Rosa A, Papaccio G. Scaffold's surface geometry significantly affects human stem cell bone tissue engineering. J Cell Physiol 2007; 214:166-72. [PMID: 17565721 DOI: 10.1002/jcp.21175] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In this study, we have observed dental pulp stem cells (SBP-DPSCs) performances on different scaffolds, such as PLGA 85:15, hydroxyapatite chips (HA) and titanium. Stem cells were challenged with each engineered surface, either in plane cultures or in a rotating apparatus, for a month. Gingival fibroblasts were used as controls. Results showed that stem cells exerted a different response, depending on the different type of textured surface: in fact, microconcavities significantly affected SBP-DPSC differentiation into osteoblasts, both temporally and quantitatively, with respect to the other textured surfaces. Actually, stem cells challenged with concave surfaces differentiated quicker and showed nuclear polarity, an index of secretion, cellular activity and matrix formation. Moreover, bone-specific proteins were significantly expressed and the obtained bone tissue was of significant thickness. Thus, cells cultured on the concave textured surface had better cell-scaffold interactions and were induced to secrete factors that, due to their autocrine effects, quickly lead to osteodifferentiation, bone tissue formation, and vascularization. The worst cell performance was obtained using convex surfaces, due to the scarce cell proliferation on to the scaffold and the poor matrix secretion. In conclusion, this study stresses that for a suitable and successful bone tissue reconstruction the surface texture is of paramount importance.
Collapse
Affiliation(s)
- Antonio Graziano
- Dipartimento di Medicina Sperimentale, Sezione di Istologia ed Embriologia, Secondo Ateneo di Napoli, Napoli, Italy
| | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Min BM, Jeong L, Lee KY, Park WH. Regenerated Silk Fibroin Nanofibers: Water Vapor-Induced Structural Changes and Their Effects on the Behavior of Normal Human Cells. Macromol Biosci 2006; 6:285-92. [PMID: 16572474 DOI: 10.1002/mabi.200500246] [Citation(s) in RCA: 129] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Nanofibrous non-woven matrices were prepared by electrospinning a regenerated silk fibroin (SF) solution, and the structural changes of SF nanofibers treated with water vapor were investigated using time-resolved IR and (13)C CP/MAS NMR spectroscopy. Conformational transitions of SF from random coil to beta-sheet structures were induced by water vapor treatment and were strongly dependent on the treatment time and temperature. Water vapor treatment provided a useful means of stabilizing the SF nanofiber matrices, resulting in the formation of matrices with a decreased solubility in water and increased mechanical strength. The adhesion and spreading of both normal human keratinocytes and fibroblasts onto the SF nanofiber matrices were also investigated, and the water vapor-treated SF nanofiber matrices showed good cellular compatibility, in comparison with traditional methanol-treated ones. This approach to controlling the conformational changes of SF nanofibers by water vapor treatment may be useful in the design and tailoring of novel materials for biomedical applications, including wound dressings and scaffolds for tissue engineering.
Collapse
Affiliation(s)
- Byung-Moo Min
- Department of Oral Biochemistry and Craniomaxillofacial Reconstructive Science, Dental Research Institute, Seoul National University College of Dentistry, Seoul 110-749, South Korea
| | | | | | | |
Collapse
|