101
|
German MJ, Osei-Bempong C, Knuth CA, Deehan DJ, Oldershaw RA. Investigating the biological response of human mesenchymal stem cells to titanium surfaces. J Orthop Surg Res 2014; 9:135. [PMID: 25496535 PMCID: PMC4269958 DOI: 10.1186/s13018-014-0135-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 12/01/2014] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND We have investigated the behaviour of a newly characterised population of haemarthrosis fluid-derived human mesenchymal stem cells (HF-hMSCs) with titanium (Ti) surfaces. METHODS HF-hMSCs were seeded onto round cannulated interference (RCI; Smith and Nephew) screws or control Ti discs and cultured under pro-osteogenic conditions. RESULTS Electron microscopy showed the attachment and spreading of HF-hMSCs across both Ti surfaces during the early stages of osteogenic culture; however, cells were exclusively localised to the basal regions within the vertex of the Ti screws. In the later stages of culture, an osteoid matrix was deposited on the Ti surfaces with progressive culture expansion and matrix deposition up the sides and the top of the Ti Screws. Quantification of cellular content revealed a significantly higher number of cells within the Ti screw cultures; however, there was no difference in the cellular health. Conversely, alizarin red staining used as both a qualitative and quantitative measure of matrix calcification was significantly increased in Ti disc cultures compared to those of Ti screws. CONCLUSIONS Our results suggest that the gross topography of the metal implant is able to create microenvironment niches that have an influence on cellular behaviour. These results have implications for the design of advanced tissue engineering strategies that seek to use cellular material to enhance biological remodelling and healing following tissue reconstruction.
Collapse
Affiliation(s)
- Matthew J German
- Centre for Oral Health Research, School of Dental Sciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, NE2 4BW, UK.
| | - Charles Osei-Bempong
- Institute of Genetic Medicine, Faculty of Medical Sciences, Newcastle University, International Centre for Life, Times Square, Newcastle upon Tyne, NE1 4EP, UK.
| | - Callie A Knuth
- North East England Stem Cell Institute, Faculty of Medical Sciences, Newcastle University, International Centre for Life, Times Square, Newcastle upon Tyne, NE1 4EP, UK.
| | - David J Deehan
- Department of Orthopaedics, Freeman Hospital, Newcastle upon Tyne NHS Hospitals Foundation Trust, Freeman Road, High Heaton, Newcastle upon Tyne, NE7 7DN, UK.
| | - Rachel A Oldershaw
- North East England Stem Cell Institute, Faculty of Medical Sciences, Newcastle University, International Centre for Life, Times Square, Newcastle upon Tyne, NE1 4EP, UK. .,Department of Musculoskeletal Biology, Institute of Ageing and Chronic Disease, Faculty of Health and Life Sciences, The University of Liverpool, Leahurst Campus, Chester High Road, Neston, CH64 7TE, UK.
| |
Collapse
|
102
|
Han G, Müller WEG, Wang X, Lilja L, Shen Z. Porous titania surfaces on titanium with hierarchical macro- and mesoporosities for enhancing cell adhesion, proliferation and mineralization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 47:376-83. [PMID: 25492210 DOI: 10.1016/j.msec.2014.11.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 10/03/2014] [Accepted: 11/06/2014] [Indexed: 01/12/2023]
Abstract
Titanium received a macroporous titania surface layer by anodization, which contains open pores with average pore diameter around 5 μm. An additional mesoporous titania top layer following the contour of the macropores, of 100-200 nm thickness and with a pore diameter of 10nm, was formed by using the evaporation-induced self-assembly (EISA) method with titanium (IV) tetraethoxide as the precursor. A coherent laminar titania surface layer was thus obtained, creating a hierarchical macro- and mesoporous surface that was characterized by high-resolution electron microscopy. The interfacial bonding between the surface layers and the titanium matrix was characterized by the scratch test that confirmed a stable and strong bonding of titania surface layers on titanium. The wettability to water and the effects on the osteosarcoma cell line (SaOS-2) proliferation and mineralization of the formed titania surface layers were studied systematically by cell culture and scanning electron microscopy. The results proved that the porous titania surface with hierarchical macro- and mesoporosities was hydrophilic that significantly promoted cell attachment and spreading. A synergistic role of the hierarchical macro- and mesoporosities was revealed in terms of enhancing cell adhesion, proliferation and mineralization, compared with the titania surface with solo scale topography.
Collapse
Affiliation(s)
- Guang Han
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, 10691 Stockholm, Sweden
| | - Werner E G Müller
- ERC Advanced Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, Duesbergweg 6, D-55128 Mainz, Germany
| | - Xiaohong Wang
- ERC Advanced Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, Duesbergweg 6, D-55128 Mainz, Germany
| | - Louise Lilja
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, 10691 Stockholm, Sweden; Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden
| | - Zhijian Shen
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, 10691 Stockholm, Sweden.
| |
Collapse
|
103
|
Immediate loading: from biology to biomechanics. Report of the Committee on Research in fixed Prosthodontics of the American Academy of fixed Prosthodontics. J Prosthet Dent 2014; 113:96-107. [PMID: 25444287 DOI: 10.1016/j.prosdent.2014.08.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 08/15/2014] [Accepted: 08/18/2014] [Indexed: 11/22/2022]
Abstract
One of the key issues of modern implant rehabilitation is the overall shortening of treatment time. High survival rates for immediately loaded implants have been reported in many but not all treatment modalities. In recent years, considerable evidence for the successful immediate loading outcome has been documented in both animal and human studies. The mechanical force generated by immediate loading may explain the favorable biologic response of bone and surrounding tissue when the design is biomechanically sound. However, in certain treatment modalities, including but not limited to immediately placed maxillary anterior single implants, immediately placed single molar implants, unsplinted implants in overdentures, and implants in maxillary anterior partial fixed dental prostheses, loading dental implants indiscriminately and immediately is not safe because of potentially unfavorable stress distribution and a negative cellular response under such high stress during early healing.
Collapse
|
104
|
Kim SE, Yun YP, Lee JY, Park K, Suh DH. Osteoblast activity of MG-63 cells is enhanced by growth on a lactoferrin-immobilized titanium substrate. Colloids Surf B Biointerfaces 2014; 123:191-8. [DOI: 10.1016/j.colsurfb.2014.09.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 08/25/2014] [Accepted: 09/05/2014] [Indexed: 12/28/2022]
|
105
|
Stadlinger B, Belibasakis G, Bierbaum S. Implantatoberflächen und ihr Einfluss auf das periimplantäre Hartgewebe. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/s12285-013-0388-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
106
|
Song YG, Cho IH. Characteristics and osteogenic effect of zirconia porous scaffold coated with β-TCP/HA. J Adv Prosthodont 2014; 6:285-94. [PMID: 25177472 PMCID: PMC4146729 DOI: 10.4047/jap.2014.6.4.285] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 06/12/2014] [Accepted: 06/30/2014] [Indexed: 11/08/2022] Open
Abstract
PURPOSE The purpose of this study was to evaluate the properties of a porous zirconia scaffold coated with bioactive materials and compare the in vitro cellular behavior of MC3T3-E1 preosteoblastic cells to titanium and zirconia disks and porous zirconia scaffolds. MATERIALS AND METHODS Titanium and zirconia disks were prepared. A porous zirconia scaffold was fabricated with an open cell polyurethane disk foam template. The porous zirconia scaffolds were coated with β-TCP, HA and a compound of β-TCP and HA (BCP). The characteristics of the specimens were evaluated using scanning electron microscopy (SEM), energy dispersive x-ray spectrometer (EDX), and x-ray diffractometry (XRD). The dissolution tests were analyzed by an inductively coupled plasma spectrometer (ICP). The osteogenic effect of MC3T3-E1 cells was assessed via cell counting and reverse transcriptase-polymerase chain reaction (RT-PCR). RESULTS The EDX profiles showed the substrate of zirconia, which was surrounded by the Ca-P layer. In the dissolution test, dissolved Ca(2+) ions were observed in the following decreasing order; β-TCP > BCP > HA (P<.05). In the cellular experiments, the cell proliferation on titanium disks appeared significantly lower in comparison to the other groups after 5 days (P<.05). The zirconia scaffolds had greater values than the zirconia disks (P<.05). The mRNA level of osteocalcin was highest on the non-coated zirconia scaffolds after 7 days. CONCLUSION Zirconia had greater osteoblast cell activity than titanium. The interconnecting pores of the zirconia scaffolds showed enhanced proliferation and cell differentiation. The activity of osteoblast was more affected by microstructure than by coating materials.
Collapse
Affiliation(s)
- Young-Gyun Song
- Department of Prosthodontics, College of Dentistry, Dankook University, Cheonan, Republic of Korea
| | - In-Ho Cho
- Department of Prosthodontics, College of Dentistry, Dankook University, Cheonan, Republic of Korea
| |
Collapse
|
107
|
Vandrovcova M, Jirka I, Novotna K, Lisa V, Frank O, Kolska Z, Stary V, Bacakova L. Interaction of human osteoblast-like Saos-2 and MG-63 cells with thermally oxidized surfaces of a titanium-niobium alloy. PLoS One 2014; 9:e100475. [PMID: 24977704 PMCID: PMC4076233 DOI: 10.1371/journal.pone.0100475] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 05/26/2014] [Indexed: 11/19/2022] Open
Abstract
An investigation was made of the adhesion, growth and differentiation of osteoblast-like MG-63 and Saos-2 cells on titanium (Ti) and niobium (Nb) supports and on TiNb alloy with surfaces oxidized at 165°C under hydrothermal conditions and at 600°C in a stream of air. The oxidation mode and the chemical composition of the samples tuned the morphology, topography and distribution of the charge on their surfaces, which enabled us to evaluate the importance of these material characteristics in the interaction of the cells with the sample surface. Numbers of adhered MG-63 and Saos-2 cells correlated with the number of positively-charged (related with the Nb2O5 phase) and negatively-charged sites (related with the TiO2 phase) on the alloy surface. Proliferation of these cells is correlated with the presence of positively-charged (i.e. basic) sites of the Nb2O5 alloy phase, while cell differentiation is correlated with negatively-charged (acidic) sites of the TiO2 alloy phase. The number of charged sites and adhered cells was substantially higher on the alloy sample oxidized at 600°C than on the hydrothermally treated sample at 165°C. The expression values of osteoblast differentiation markers (collagen type I and osteocalcin) were higher for cells grown on the Ti samples than for those grown on the TiNb samples. This was more particularly apparent in the samples treated at 165°C. No considerable immune activation of murine macrophage-like RAW 264.7 cells on the tested samples was found. The secretion of TNF-α by these cells into the cell culture media was much lower than for either cells grown in the presence of bacterial lipopolysaccharide, or untreated control samples. Thus, oxidized Ti and TiNb are both promising materials for bone implantation; TiNb for applications where bone cell proliferation is desirable, and Ti for induction of osteogenic cell differentiation.
Collapse
Affiliation(s)
- Marta Vandrovcova
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Ivan Jirka
- J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Katarina Novotna
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Vera Lisa
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Otakar Frank
- J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Zdenka Kolska
- Faculty of Science, J.E. Purkinje University, Usti nad Labem, Czech Republic
| | - Vladimir Stary
- Faculty of Mechanical Engineering, Czech Technical University in Prague, Prague, Czech Republic
| | - Lucie Bacakova
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
- * E-mail:
| |
Collapse
|
108
|
Guven Y, Tuna EB, Dincol ME, Aktoren O. X-ray diffraction analysis of MTA-Plus, MTA-Angelus and DiaRoot BioAggregate. Eur J Dent 2014; 8:211-215. [PMID: 24966772 PMCID: PMC4054052 DOI: 10.4103/2278-344x.130603] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objective: The purpose of this study was to investigate and compare the crystalline structures of recently released MTA Plus (MTA-P), MTA Angelus (MTA-A), DiaRoot BioAggregate (BA) by X-ray diffraction (XRD) analysis. Materials and Methods: Phase analysis was carried out on powder and set forms of tested materials. The powder specimens placed into sample holders that were packed with a glass slide and the set samples prepared according to the manufacturer's instructions were placed into molds. The samples after being set for three days at 37°C and 100% humidity in an incubator were mounted onto the XRD machine and phase identification was accomplished using a search-match software program. Results: XRD findings indicated that major constituents of MTA-P were bismuth oxide, portlandite, dicalcium silicate and tricalcium silicate. The crystal structure of MTA-A were similar to those of MTA-P except for the absence of portlandite. Additionally, MTA-A had tricalcium aluminate differing from MTA-P. BA mainly differed from MTA-P and MTA-A by the radiopacifier (tantalum oxide-TO) in its composition. Conclusions: The majority of constituents of the tested materials have shown similarity except for the presence of tricalcium aluminate in MTA-A and the inclusion of TO in BA. In addition, set MTA-P showed a strong peak of portlandite.
Collapse
Affiliation(s)
- Yeliz Guven
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkiye
| | - Elif Bahar Tuna
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkiye
| | - Muzaffer Emin Dincol
- Department of Endodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkiye
| | - Oya Aktoren
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkiye
| |
Collapse
|
109
|
Wang H, Lu T, Meng F, Zhu H, Liu X. Enhanced osteoblast responses to poly ether ether ketone surface modified by water plasma immersion ion implantation. Colloids Surf B Biointerfaces 2014; 117:89-97. [DOI: 10.1016/j.colsurfb.2014.02.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 01/25/2014] [Accepted: 02/08/2014] [Indexed: 10/25/2022]
|
110
|
Quirynen M, Al-Nawas B, Meijer HJA, Razavi A, Reichert TE, Schimmel M, Storelli S, Romeo E. Small-diameter titanium Grade IV and titanium-zirconium implants in edentulous mandibles: three-year results from a double-blind, randomized controlled trial. Clin Oral Implants Res 2014; 26:831-40. [PMID: 24713048 DOI: 10.1111/clr.12367] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2014] [Indexed: 01/23/2023]
Abstract
OBJECTIVE The aim of this study was to compare crestal bone-level changes, soft tissue parameters and implant success and survival between small-diameter implants made of titanium/zirconium (TiZr) alloy or of Grade IV titanium (Ti) in edentulous mandibles restored with removable overdentures. MATERIALS AND METHODS This was a randomized, controlled, double-blind, split-mouth multicenter clinical trial. Patients with edentulous mandibles received two Straumann bone-level implants (diameter 3.3 mm), one of Ti Grade IV (control) and one of TiZr (test), in the interforaminal region. Implants were loaded after 6-8 weeks and removable Locator-retained overdentures were placed within 2 weeks of loading. Modified plaque and sulcus bleeding indices, radiographic bone level, and implant survival and success were evaluated up to 36 months. RESULTS Of 91 treated patients, 75 completed the three-year follow-up. Three implants were lost (two control and one test implant). The survival rates were 98.7% and 97.3%, and the mean marginal bone level change was -0.78 ± 0.75 and -0.60 ± 0.71 mm for TiZr and Ti Grade IV implants. Most patients had a plaque score of 0 or 1 (54% for test and 51.7% for control), and a sulcus bleeding score of 0 (46.1% for test and 44.9% for control). No significant differences were found between the two implant types for bone-level change, soft tissue parameters, survival and success. CONCLUSIONS After 36 months, similar outcomes were found between Ti Grade IV and TiZr implants. The results confirm that the results seen at 12 months continue over time.
Collapse
Affiliation(s)
| | | | - Henny J A Meijer
- University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Amir Razavi
- Cantonal Hospital Lucerne, Lucerne, Switzerland
| | | | | | - Stefano Storelli
- University of Milan Dental Clinic, San Paolo Hospital, Milan, Italy
| | - Eugenio Romeo
- University of Milan Dental Clinic, San Paolo Hospital, Milan, Italy
| | | |
Collapse
|
111
|
Louropoulou A, Slot DE, Van der Weijden F. Influence of mechanical instruments on the biocompatibility of titanium dental implants surfaces: a systematic review. Clin Oral Implants Res 2014; 26:841-50. [DOI: 10.1111/clr.12365] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/09/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Anna Louropoulou
- Department of Periodontology; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam; VU University; Amsterdam The Netherlands
| | - Dagmar E. Slot
- Department of Periodontology; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam; VU University; Amsterdam The Netherlands
| | - Fridus Van der Weijden
- Department of Periodontology; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam; VU University; Amsterdam The Netherlands
| |
Collapse
|
112
|
In Vitro Cytotoxicity of a Ti-35Nb-7Zr-5Ta Alloy Doped with Different Oxygen Contents. MATERIALS 2014; 7:2183-2193. [PMID: 28788562 PMCID: PMC5453255 DOI: 10.3390/ma7032183] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 01/21/2014] [Accepted: 01/21/2014] [Indexed: 11/25/2022]
Abstract
Cp-Ti is the most common material used for dental implants, but its elastic modulus is around five times higher than that of bone. Recently, promising alloys that add Nb, Ta, Zr and Mo to Ti have been developed. The mechanical properties of these alloys are directly related to its microstructure and the presence of interstitial elements, such as oxygen, carbon, nitrogen and hydrogen. In this study, the in vitro cytotoxicity of Ti-35Nb-7Zr-5Ta (TNZT) alloys was analyzed in the as-received condition and after being doped with several small quantities of oxygen on a cultured osteogenic cell. The cell’s morphology was also examined by scanning electron microscopy (SEM). The TNZT alloy presented no cytotoxic effects on osteoblastic cells in the studied conditions.
Collapse
|
113
|
Canullo L, Penarrocha-Oltra D, Marchionni S, Bagán L, Peñarrocha-Diago MA, Micarelli C. Soft tissue cell adhesion to titanium abutments after different cleaning procedures: preliminary results of a randomized clinical trial. Med Oral Patol Oral Cir Bucal 2014; 19:e177-83. [PMID: 24121917 PMCID: PMC4015045 DOI: 10.4317/medoral.19329] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 05/22/2013] [Indexed: 02/04/2023] Open
Abstract
Objectives: A randomized controlled trial was performed to assess soft tissue cell adhesion to implant titanium abutments subjected to different cleaning procedures and test if plasma cleaning can enhance cell adhesion at an early healing time.
Study Design: Eighteen patients with osseointegrated and submerged implants were included. Before re-opening, 18 abutments were divided in 3 groups corresponding to different clinical conditions with different cleaning processes: no treatment (G1), laboratory customization and cleaning by steam (G2), cleaning by plasma of Argon (G3). Abutments were removed after 1 week and scanning electron microscopy was used to analyze cell adhesion to the abutment surface quantitatively (percentage of area occupied by cells) and qualitatively (aspect of adhered cells and presence of contaminants).
Results: Mean percentages of area occupied by cells were 17.6 ± 22.7%, 16.5 ± 12.9% and 46.3 ± 27.9% for G1, G2 and G3 respectively. Differences were statistically significant between G1 and G3 (p=0.030), close to significance between G2 and G3 (p=0.056), and non-significant between G1 and G2 (p=0.530). The proportion of samples presenting adhered cells was homogeneous among the 3 groups (p-valor = 1.000). In all cases cells presented a flattened aspect; in 2 cases cells were less efficiently adhered and in 1 case cells presented filipodia. Three cases showed contamination with cocobacteria.
Conclusions: Within the limits of the present study, plasma of Argon may enhance cell adhesion to titanium abutments, even at the early stage of soft tissue healing. Further studies with greater samples are necessary to confirm these findings.
Key words:Connective tissue, dental abutments, randomized controlled trial, clinical research, glow discharged abutment, plasma cleaning.
Collapse
Affiliation(s)
- L Canullo
- Cirugía Bucal, Clínicas Odontológicas, Gascó Oliag 1, 46021- Valencia, Spain,
| | | | | | | | | | | |
Collapse
|
114
|
Nelson G, Nychka J, McDonald A. Structure, phases, and mechanical response of Ti-alloy bioactive glass composite coatings. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 36:261-76. [DOI: 10.1016/j.msec.2013.12.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 10/31/2013] [Accepted: 12/06/2013] [Indexed: 11/24/2022]
|
115
|
Human gingival fibroblasts function is stimulated on machined hydrided titanium zirconium dental implants. J Dent 2014; 42:30-8. [DOI: 10.1016/j.jdent.2013.11.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 10/14/2013] [Accepted: 11/10/2013] [Indexed: 11/30/2022] Open
|
116
|
Rituerto Sin J, Neville A, Emami N. Corrosion and tribocorrosion of hafnium in simulated body fluids. J Biomed Mater Res B Appl Biomater 2013; 102:1157-64. [DOI: 10.1002/jbm.b.33097] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 12/04/2013] [Accepted: 12/10/2013] [Indexed: 11/09/2022]
Affiliation(s)
- J. Rituerto Sin
- Division of Machine Elements, Department of Engineering Sciences and Mathematics; Luleå University of Technology; Luleå Sweden
| | - A. Neville
- Institute of Engineering Thermofluids, Surfaces and Interfaces, School of Mechanical Engineering; University of Leeds; Leeds UK
| | - N. Emami
- Division of Machine Elements, Department of Engineering Sciences and Mathematics; Luleå University of Technology; Luleå Sweden
| |
Collapse
|
117
|
The effect of titanium with heparin/BMP-2 complex for improving osteoblast activity. Carbohydr Polym 2013; 98:546-54. [DOI: 10.1016/j.carbpol.2013.05.095] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 05/25/2013] [Accepted: 05/27/2013] [Indexed: 11/18/2022]
|
118
|
Siddiqi A, Kieser JA, De Silva RK, Thomson WM, Duncan WJ. Soft and Hard Tissue Response to Zirconia versus Titanium One-Piece Implants Placed in Alveolar and Palatal Sites: A Randomized Control Trial. Clin Implant Dent Relat Res 2013; 17:483-96. [DOI: 10.1111/cid.12159] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Allauddin Siddiqi
- Department of Oral Sciences; Oral Implantology Research Group; Sir John Walsh Research Institute; Faculty of Dentistry; University of Otago; Dunedin New Zealand
| | - Jules August Kieser
- Sir John Walsh Research Institute; Faculty of Dentistry; University of Otago; Dunedin New Zealand
| | - Rohana Kumara De Silva
- Sir John Walsh Research Institute; Department of Oral Diagnostic and Surgical Sciences; Faculty of Dentistry; University of Otago; Dunedin New Zealand
| | - William Murray Thomson
- Sir John Walsh Research Institute; Department of Oral Sciences; Discipline of Dental Public Health; Faculty of Dentistry; University of Otago; Dunedin New Zealand
| | - Warwick John Duncan
- Sir John Walsh Research Institute; Department of Oral Sciences; Faculty of Dentistry; University of Otago; Dunedin New Zealand
| |
Collapse
|
119
|
Gómez-Florit M, Ramis JM, Xing R, Taxt-Lamolle S, Haugen HJ, Lyngstadaas SP, Monjo M. Differential response of human gingival fibroblasts to titanium- and titanium-zirconium-modified surfaces. J Periodontal Res 2013; 49:425-36. [PMID: 23919718 DOI: 10.1111/jre.12121] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/25/2013] [Indexed: 12/01/2022]
Abstract
BACKGROUND AND OBJECTIVE Gingival fibroblasts are responsible for the constant adaptation, wound healing and regeneration of gingival connective tissue. New titanium-zirconium (TiZr) abutment surfaces have been designed to improve soft tissue integration and reduce implant failure compared with titanium (Ti). The aim of the present study was first to characterize a primary human gingival fibroblast (HGF) model and secondly to evaluate their differential response to Ti and TiZr polished (P), machined (M) and machined + acid-etched (modMA) surfaces, respectively. MATERIAL AND METHODS HGF were cultured on tissue culture plastic or on the different Ti and TiZr surfaces. Cell morphology was evaluated through confocal and scanning electron microscopy. A wound healing assay was performed to evaluate the capacity of HGF to close a scratch. The expression of genes was evaluated by real-time RT-PCR, addressing: (i) extracellular matrix organization and turnover; (ii) inflammation; (iii) cell adhesion and structure; and (iv) wound healing. Finally, cells on Ti/TiZr surfaces were immunostained with anti-ITGB3 antibodies to analyze integrin β3 production. Matrix metalloproteinase-1 (MMP1) and inhibitor of metallopeptidases-1 (TIMP1) production were analyzed by enzyme-linked immunosorbent assays. RESULTS On tissue culture plastic, HGF showed no differences between donors on cell proliferation and on the ability for wound closure; α-smooth muscle actin was overexpressed on scratched monolayers. The differentiation profile showed increased production of extracellular matrix components. Ti and TiZr showed similar biocompatibility with HGF. TiZr increased integrin-β3 mRNA and protein levels, compared with Ti. Cells on TiZr surfaces showed higher MMP1 protein than Ti surfaces, although similar TIMP1 protein production. In this in vitro experiment, P and M surfaces from both Ti and TiZr showed better HGF growth than modMA. CONCLUSION Taking into account the better mechanical properties and bioactivity of TiZr compared with Ti, the results of the present study show that TiZr is a potential clinical candidate for soft tissue integration and implant success.
Collapse
Affiliation(s)
- M Gómez-Florit
- Department of Fundamental Biology and Health Sciences, Research Institute on Health Sciences (IUNICS), University of Balearic Islands, Palma de Mallorca, Spain
| | | | | | | | | | | | | |
Collapse
|
120
|
Gomez Sanchez A, Schreiner W, Ballarre J, Cisilino A, Duffó G, Ceré S. Surface modification of titanium by anodic oxidation in phosphoric acid at low potentials. Part 2. In vitro and in vivo study. SURF INTERFACE ANAL 2013. [DOI: 10.1002/sia.5298] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- A. Gomez Sanchez
- INTEMA; Universidad Nacional del Mar del Plata - CONICET; Juan B. Justo 4302 (7600) Mar del Plata Argentina
| | - W. Schreiner
- LSI - LANSEN; Departamento de Física; UFPR. Curitiba Brazil
| | - J. Ballarre
- INTEMA; Universidad Nacional del Mar del Plata - CONICET; Juan B. Justo 4302 (7600) Mar del Plata Argentina
| | - A. Cisilino
- INTEMA; Universidad Nacional del Mar del Plata - CONICET; Juan B. Justo 4302 (7600) Mar del Plata Argentina
| | - G. Duffó
- Departamento de Materiales; Comisión Nacional de Energía Atómica - CONICET; Av. Gral. Paz 1499 (1650) San Martín Buenos Aires Argentina
- Universidad Nacional de Gral. San Martín; Av. Gral. Paz 1499, (1650) San Martín; Buenos Aires Argentina
| | - S. Ceré
- INTEMA; Universidad Nacional del Mar del Plata - CONICET; Juan B. Justo 4302 (7600) Mar del Plata Argentina
| |
Collapse
|
121
|
Kämmerer PW, Palarie V, Schiegnitz E, Hagmann S, Alshihri A, Al-Nawas B. Vertical osteoconductivity and early bone formation of titanium-zirconium and titanium implants in a subperiosteal rabbit animal model. Clin Oral Implants Res 2013; 25:774-80. [DOI: 10.1111/clr.12175] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/17/2013] [Indexed: 12/28/2022]
Affiliation(s)
- Peer W. Kämmerer
- Department of Oral; Maxillofacial and Plastic Surgery; University Medical Centre Mainz; Mainz Germany
- Harvard Medical School; Boston MA USA
| | - Victor Palarie
- Department of Oral and Maxillofacial Surgery; University of Chisinau; Chisinau Moldova
| | - Eik Schiegnitz
- Department of Oral; Maxillofacial and Plastic Surgery; University Medical Centre Mainz; Mainz Germany
| | - Sebastien Hagmann
- Department of Orthopedics; University of Heidelberg; Heidelberg Germany
| | - Abdulmonem Alshihri
- Department of Restorative and Biomaterial Sciences; Harvard School of Dental Medicine; Boston MA USA
| | - Bilal Al-Nawas
- Department of Oral; Maxillofacial and Plastic Surgery; University Medical Centre Mainz; Mainz Germany
| |
Collapse
|
122
|
Jirka I, Vandrovcová M, Frank O, Tolde Z, Plšek J, Luxbacher T, Bačáková L, Starý V. On the role of Nb-related sites of an oxidized β-TiNb alloy surface in its interaction with osteoblast-like MG-63 cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:1636-45. [DOI: 10.1016/j.msec.2012.12.073] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Revised: 11/06/2012] [Accepted: 12/20/2012] [Indexed: 11/27/2022]
|
123
|
Holzapfel BM, Reichert JC, Schantz JT, Gbureck U, Rackwitz L, Nöth U, Jakob F, Rudert M, Groll J, Hutmacher DW. How smart do biomaterials need to be? A translational science and clinical point of view. Adv Drug Deliv Rev 2013; 65:581-603. [PMID: 22820527 DOI: 10.1016/j.addr.2012.07.009] [Citation(s) in RCA: 235] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 04/29/2012] [Accepted: 07/06/2012] [Indexed: 02/05/2023]
Abstract
Over the last 4 decades innovations in biomaterials and medical technology have had a sustainable impact on the development of biopolymers, titanium/stainless steel and ceramics utilized in medical devices and implants. This progress was primarily driven by issues of biocompatibility and demands for enhanced mechanical performance of permanent and non-permanent implants as well as medical devices and artificial organs. In the 21st century, the biomaterials community aims to develop advanced medical devices and implants, to establish techniques to meet these requirements, and to facilitate the treatment of older as well as younger patient cohorts. The major advances in the last 10 years from a cellular and molecular knowledge point of view provided the scientific foundation for the development of third-generation biomaterials. With the introduction of new concepts in molecular biology in the 2000s and specifically advances in genomics and proteomics, a differentiated understanding of biocompatibility slowly evolved. These cell biological discoveries significantly affected the way of biomaterials design and use. At the same time both clinical demands and patient expectations continued to grow. Therefore, the development of cutting-edge treatment strategies that alleviate or at least delay the need of implants could open up new vistas. This represents the main challenge for the biomaterials community in the 21st century. As a result, the present decade has seen the emergence of the fourth generation of biomaterials, the so-called smart or biomimetic materials. A key challenge in designing smart biomaterials is to capture the degree of complexity needed to mimic the extracellular matrix (ECM) of natural tissue. We are still a long way from recreating the molecular architecture of the ECM one to one and the dynamic mechanisms by which information is revealed in the ECM proteins in response to challenges within the host environment. This special issue on smart biomaterials lists a large number of excellent review articles which core is to present and discuss the basic sciences on the topic of smart biomaterials. On the other hand, the purpose of our review is to assess state of the art and future perspectives of the so called "smart biomaterials" from a translational science and specifically clinical point of view. Our aim is to filter out and discuss which biomedical advances and innovations help us to achieve the objective to translate smart biomaterials from bench to bedside. The authors predict that analyzing the field of smart biomaterials from a clinical point of view, looking back 50 years from now, it will show that this is our heritage in the 21st century.
Collapse
Affiliation(s)
- Boris Michael Holzapfel
- Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland, University of Technology, 60 Musk Avenue, Kelvin Grove, QLD 4059, Australia.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
124
|
Saghiri MA, Tanideh N, Garcia-Godoy F, Lotfi M, Karamifar K, Amanat D. Subcutaneous connective tissue reactions to various endodontic biomaterials: an animal study. J Dent Res Dent Clin Dent Prospects 2013; 7:15-21. [PMID: 23486841 PMCID: PMC3593200 DOI: 10.5681/joddd.2013.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Accepted: 12/08/2012] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND AND AIMS Biocompatibility of root-end filling materials is a matter of debate. The aim of this study was to compare the biocompatibility of a variety of commercial ProRoot WMTA cements and a resin-based cement (Geristore®) with different pH values of setting reaction and different aluminum contents, implanted into the subcutaneous connective tissue of rats at various time intervals. MATERIALS AND METHODS Fifty Sprague-Dawley rats were used in this study. Polyethylene tubes were filled with Angelus WMTA, ProRoot WMTA, Bioaggregate, and Geristore. Empty control tubes were implanted into subcutaneous tissues and harvested at 7-, 14-, 28- and 60-day intervals. Tissue sections of 5 μm were stained with hematoxylin and eosin and observed under a light microscope. Inflammatory reactions were categorized as 0, none (without inflammatory cells); 1, mild (inflammatory cells ≤25); 2, moderate (25-125 inflammatory cells); and 3, severe (>125 inflammatory cells). Statistical analysis was performed with Kruskal-Wallis and Mann Whitney U tests. RESULTS ProRoot WMTA and Angelus elicited significantly less inflammation than other materials (P<0.05). After 7 days, however, all the materials induced significantly more inflammation than the controls (P<0.05). Angelus-MTA group exhi-bited no significant differences from the Bioaggregate group (P=0.15); however, ProRoot WMTA elicited significantly less inflammation than Bioaggregate (P=0.02). Geristore induced significantly more inflammation than other groups (P<0.05). CONCLUSION Geristore induced an inflammatory response higher than ProRoot WMTA; therefore, it is not recommended for clinical use.
Collapse
Affiliation(s)
- Mohammad Ali Saghiri
- Head, Center for Excellence in Endodontic Materials, Professor Kamal Asgar Research Center (KARC) For Dental Materials and Devices, Tehran, Iran
| | | | | | | | | | | |
Collapse
|
125
|
Arciniegas M, Peña J, Gil FJ, Manero JM. In vitroresponse of preosteoblastic MG63 cells on Ni-free Ti shape memory substrates. J Biomed Mater Res B Appl Biomater 2013; 101:709-20. [DOI: 10.1002/jbm.b.32873] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 11/19/2012] [Accepted: 11/25/2012] [Indexed: 11/06/2022]
|
126
|
Hofstetter W, Sehr H, Wild MD, Portenier J, Gobrecht J, Hunziker EB. Modulation of human osteoblasts by metal surface chemistry. J Biomed Mater Res A 2013; 101:2355-64. [DOI: 10.1002/jbm.a.34541] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 11/09/2012] [Accepted: 11/14/2012] [Indexed: 01/16/2023]
|
127
|
Villar CC, Huynh-Ba G, Mills MP, Cochran DL. Wound healing around dental implants. ACTA ACUST UNITED AC 2013. [DOI: 10.1111/etp.12018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
128
|
Durual S, Rieder P, Garavaglia G, Filieri A, Cattani-Lorente M, Scherrer SS, Wiskott HWA. TiNOx coatings on roughened titanium and CoCr alloy accelerate early osseointegration of dental implants in minipigs. Bone 2013; 52:230-7. [PMID: 23000509 DOI: 10.1016/j.bone.2012.09.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 08/17/2012] [Accepted: 09/12/2012] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Titanium nitride oxide (TiNOx) coatings are known for their biocompatibility, hardness and high resistance to corrosion and wear. Further, they can be applied by plasma vapor deposition onto a wide variety of metallic, mineral, or organic substrates. In cell cultures, TiNOx coatings applied onto SLA (sandblasted, large grit, acid etched)-roughened titanium surfaces increased human primary osteoblast proliferation by 1.5 times in the first 2 weeks after seeding, while maintaining a high degree of cell differentiation. Therefore, the objectives of the present study were (i) to determine whether these findings would translate into the enhanced osseointegration of TiNOx-coated implants in vivo and (ii) to compare the osseointegration of Ti-SLA (titanium-SLA) and CoCr-SLA (cobalt-chromium-SLA) implants coated with TiNOx. METHODS Forty-eight cylinders made of Ti-SLA, Ti-SLA-TiNOx (TiNOx-coated Ti-SLA) and CoCr-SLA-TiNOx (TiNOx-coated CoCr-SLA) were implanted into the lower jawbone of 8 minipigs. The bone-to-implant contact was determined after 1 week, 2 weeks, 1 month and 3 months. RESULTS Osseointegration proceeded normally on all 3 surfaces, with equal activity after the first week of healing. After 2 weeks, bone-to-implant contact was 1.8 times higher on TiNOx coatings, either deposited on Ti or on CoCr. These differences fell off after 1 and 3 months of healing. CONCLUSIONS When compared to standard SLA titanium, TiNOx coatings enhance implant osseointegration during the first month of healing. Furthermore, this stimulating effect is independent of the substrate, leading to similar results whether the coating is applied onto SLA-Ti or onto SLA-CoCr.
Collapse
Affiliation(s)
- Stéphane Durual
- Laboratory of Biomaterials, University of Geneva, Geneva, Switzerland.
| | | | | | | | | | | | | |
Collapse
|
129
|
Lindahl C, Engqvist H, Xia W. Influence of Surface Treatments on the Bioactivity of Ti. ACTA ACUST UNITED AC 2013. [DOI: 10.5402/2013/205601] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Several techniques have been described to modify the surface of titanium to make it more bioactive. Heat treatment (HT) and sodium hydroxide treatment (NaOH) have been used and can change the crystallinity and surface chemistry of titanium implants. However, no studies have systemically focused on comparing these different methods and their effect on the bioactivity of Ti. Therefore, in this study, Ti substrates were systematically treated using HT, NaOH, and a combination of HT and NaOH. The Ti plates were heat treated at various temperatures, and the plates were subjected to HT followed by soaking in NaOH or first soaked in NaOH and then heat treated. The morphology, crystallinity, hardness, water contact angle, and surface energy of the samples were analyzed as well as the bioactivity after immersion in PBS. Morphology and crystallinity changed with increasing temperature. The difference was most pronounced for the 800°C treated samples. The water contact angle decreased, and the surface energy increased with increasing temperature and was highest for 800°C. The rutile surface showed faster hydroxyapatite formation. NaOH treatment of the HT Ti samples increased the surface energy and improved its bioactivity further. Also, HT of NaOH samples improved the bioactivity compared to only HT.
Collapse
Affiliation(s)
- Carl Lindahl
- Applied Materials Science, Department of Engineering Sciences, Uppsala University, 75121 Uppsala, Sweden
- BIOMATCELL, VINN Excellence Center of Biomaterials and Cell Therapy, University of Gothenburg, 40530 Gothenburg, Sweden
| | - Håkan Engqvist
- Applied Materials Science, Department of Engineering Sciences, Uppsala University, 75121 Uppsala, Sweden
- BIOMATCELL, VINN Excellence Center of Biomaterials and Cell Therapy, University of Gothenburg, 40530 Gothenburg, Sweden
| | - Wei Xia
- Applied Materials Science, Department of Engineering Sciences, Uppsala University, 75121 Uppsala, Sweden
- BIOMATCELL, VINN Excellence Center of Biomaterials and Cell Therapy, University of Gothenburg, 40530 Gothenburg, Sweden
| |
Collapse
|
130
|
Jorge JRP, Barão VA, Delben JA, Faverani LP, Queiroz TP, Assunção WG. Titanium in dentistry: historical development, state of the art and future perspectives. J Indian Prosthodont Soc 2012; 13:71-7. [PMID: 24431713 DOI: 10.1007/s13191-012-0190-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 10/08/2012] [Indexed: 11/27/2022] Open
Abstract
Titanium is a metallic element known by several attractive characteristics, such as biocompatibility, excellent corrosion resistance and high mechanical resistance. It is widely used in Dentistry, with high success rates, providing a favorable biological response when in contact with live tissues. Therefore, the objective of this study was to describe the different uses of titanium in Dentistry, reviewing its historical development and discoursing about its state of art and future perspective of its utilization. A search in the MEDLINE/PubMed database was performed using the terms 'titanium', 'dentistry' and 'implants'. The title and abstract of articles were read, and after this first screening 20 articles were selected and their full-texts were downloaded. Additional text books and manual search of reference lists within selected articles were included. Correlated literature showed that titanium is the most used metal in Implantology for manufacturing osseointegrated implants and their systems, with a totally consolidated utilization. Moreover, titanium can be also employed in prosthodontics to obtain frameworks. However, problems related to its machining, casting, welding and ceramic application for dental prosthesis are still limiting its use. In Endodontics, titanium has been used in association to nickel for manufacturing rotatory instruments, providing a higher resistance to deformation. However, although the different possibilities of using titanium in modern Dentistry, its use for prostheses frameworks still needs technological improvements in order to surpass its limitations.
Collapse
Affiliation(s)
| | - Valentim Adelino Barão
- Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Sao Paulo State University (UNESP), José Bonifácio, 1193, Araçatuba, São Paulo, 16015-050 Brazil
| | - Juliana Aparecida Delben
- Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Sao Paulo State University (UNESP), José Bonifácio, 1193, Araçatuba, São Paulo, 16015-050 Brazil
| | - Leonardo Perez Faverani
- Department of Oral and Maxillofacial Surgery and Integrated Clinic, Araçatuba Dental School, Sao Paulo State University (UNESP), São Paulo, Brazil
| | - Thallita Pereira Queiroz
- Department of Oral and Maxillofacial Surgery and Implantology, Faculty of Dentistry, University Center of Araraquara, UNIARA, São Paulo, Brazil
| | - Wirley Gonçalves Assunção
- Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Sao Paulo State University (UNESP), José Bonifácio, 1193, Araçatuba, São Paulo, 16015-050 Brazil
| |
Collapse
|
131
|
Abstract
Dental implants made from binary titanium-zirconium (TiZr) alloys have shown promise as a high strength, yet biocompatible alternative to pure titanium, particularly for applications requiring small diameter implants. The aim of this review is to summarize existing literature reporting on the use of binary TiZr alloys for endosseous dental implant applications as tested in vitro, in animals and clinically. And furthermore to show that TiZr is “at least as good as” pure titanium in terms of biocompatibility and osseointergration. From the twelve papers that met the inclusion criteria, the current literature confirms that TiZr alloys produce small diameter implants with a strength up to 40% higher than conventional, cold-worked, grade IV titanium implants, and with a corrosion resistance and biocompatibility that is at least as good as pure titanium. The surface structure of TiZr is compatible with established surface treatments proven to aid in the osseointegration of titanium implants. Furthermore, binary TiZr alloys have been shown to achieve good osseointegration and high success rates both in animal and in clinical studies.
Collapse
|
132
|
Gigandet M, Bigolin G, Faoro F, Bürgin W, Brägger U. Implants with original and non-original abutment connections. Clin Implant Dent Relat Res 2012; 16:303-11. [PMID: 22804848 DOI: 10.1111/j.1708-8208.2012.00479.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIM To test in vitro the mechanical resistance, rotational misfit and failure mode of three original implant-abutment connections and to compare them to two connections between non-original abutments connected to one of the original implants. MATERIAL AND METHODS Three different implants with small diameters (3.3 mm for Straumann Roxolid, 3.5 mm for Nobel Biocare Replace and Astra Tech Osseospeed TX) were connected with individualized titanium abutments. Twelve implants from each system were connected to their original abutments (Straumann CARES, Nobel Biocare Procera, Astra Tech Atlantis). Twenty-four Roxolid implants were connected with non-original abutments using CAD/CAM procedures from the other two manufacturers (12 Nobel Biocare Procera and 12 Astra Tech Atlantis). For the critical bending test, a Zwick/Roell 1475 machine and the Xpert Zwick/Roell software were used. RESULTS The rotational misfit varied when comparing the different interfaces. The use of non-original grade V titanium abutments on Roxolid implants increased the force needed for deformation. The fracture mode was different with one of the original connections. CONCLUSIONS Non-original abutments differ in design of the connecting surfaces and material and demonstrate higher rotational misfit. These differences may result in unexpected failure modes.
Collapse
Affiliation(s)
- Michel Gigandet
- School of Dental Medicine, University of Bern, Bern, Switzerland
| | | | | | | | | |
Collapse
|
133
|
Ajami E, Aguey-Zinsou KF. Calcium phosphate growth at electropolished titanium surfaces. J Funct Biomater 2012; 3:327-48. [PMID: 24955535 PMCID: PMC4047935 DOI: 10.3390/jfb3020327] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 03/21/2012] [Accepted: 04/11/2012] [Indexed: 11/16/2022] Open
Abstract
This work investigated the ability of electropolished Ti surface to induce Hydroxyapatite (HA) nucleation and growth in vitro via a biomimetic method in Simulated Body Fluid (SBF). The HA induction ability of Ti surface upon electropolishing was compared to that of Ti substrates modified with common chemical methods including alkali, acidic and hydrogen peroxide treatments. Our results revealed the excellent ability of electropolished Ti surfaces in inducing the formation of bone-like HA at the Ti/SBF interface. The chemical composition, crystallinity and thickness of the HA coating obtained on the electropolished Ti surface was found to be comparable to that achieved on the surface of alkali treated Ti substrate, one of the most effective and popular chemical treatments. The surface characteristics of electropolished Ti contributing to HA growth were discussed thoroughly.
Collapse
Affiliation(s)
- Elnaz Ajami
- School of Engineering and Materials Science, University of London, Queen Mary, London E1 4NS, UK.
| | | |
Collapse
|
134
|
Guillem-Marti J, Delgado L, Godoy-Gallardo M, Pegueroles M, Herrero M, Gil FJ. Fibroblast adhesion and activation onto micro-machined titanium surfaces. Clin Oral Implants Res 2012; 24:770-80. [DOI: 10.1111/j.1600-0501.2012.02451.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/25/2012] [Indexed: 02/03/2023]
Affiliation(s)
- J. Guillem-Marti
- Department of Materials Science; Technical University of Catalonia (UPC); Barcelona; Spain
| | - L. Delgado
- Department of Materials Science; Technical University of Catalonia (UPC); Barcelona; Spain
| | - M. Godoy-Gallardo
- Department of Materials Science; Technical University of Catalonia (UPC); Barcelona; Spain
| | - M. Pegueroles
- Department of Materials Science; Technical University of Catalonia (UPC); Barcelona; Spain
| | - M. Herrero
- Faculty of Dentistry; University of Sevilla; Sevilla; Spain
| | - F. J. Gil
- Department of Materials Science; Technical University of Catalonia (UPC); Barcelona; Spain
| |
Collapse
|
135
|
Daw AE, Kazi HA, Colombo JS, Rowe WG, Williams DW, Waddington RJ, Thomas DW, Moseley R. Differential cellular and microbial responses to nano-/micron-scale titanium surface roughness induced by hydrogen peroxide treatment. J Biomater Appl 2012; 28:144-60. [PMID: 22457041 DOI: 10.1177/0885328212441495] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
This study investigated the effects of combined titanium nano-/micron-scale roughness, induced by hydrogen peroxide pre-treatments, on bone marrow stromal cell responses and Porphyromonas gingivalis adherence in vitro. Untreated surfaces exhibited nano-scale features, while hydrogen peroxide treatments promoted increased nano-/micron-scale roughness. Bone marrow stromal cell attachment and proliferation were maintained with 6 h and 24 h treatments, but significantly decreased on 1-week and 4-week-treated surfaces. Bone marrow stromal cells on 6 h-4 week-treated titanium demonstrated enhanced osteogenic differentiation versus untreated surfaces. P. gingivalis adherence was significantly increased on 24 h-4 week surfaces. Results suggest that 6 h but less than 24 h treatments maintain or promote bone marrow stromal cell responses while minimizing microbial adherence, potentially enhancing titanium surface bio-activation for osseointegration.
Collapse
Affiliation(s)
- Abdulaziz E Daw
- Tissue Engineering & Reparative Dentistry, Cardiff Institute of Tissue Engineering & Repair-CITER, School of Dentistry, Cardiff University, Cardiff, UK
| | | | | | | | | | | | | | | |
Collapse
|
136
|
Vandrovcova M, Hanus J, Drabik M, Kylian O, Biederman H, Lisa V, Bacakova L. Effect of different surface nanoroughness of titanium dioxide films on the growth of human osteoblast-like MG63 cells. J Biomed Mater Res A 2012; 100:1016-32. [PMID: 22307998 DOI: 10.1002/jbm.a.34047] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 09/23/2011] [Accepted: 12/05/2011] [Indexed: 11/08/2022]
Abstract
Cell behavior depends strongly on the physical and chemical properties of the material surface, for example, its chemistry and topography. The authors have therefore assessed the influence of materials of different chemical composition (i.e., glass substrates with and without TiO(2) films in anatase form) and different surface roughness (R(a) = 0, 40, 100, or 170 nm) on the adhesion, proliferation, and osteogenic differentiation of human osteoblast-like MG63 cells. On day 1 after seeding, the largest cell spreading area was found on flat TiO(2) films (R(a) = 0 nm). On TiO(2) films with R(a) = 170 nm, the cell spreading area was larger and the number of initially adhering cells was higher than the values on the corresponding uncoated glass. On day 3 after seeding, the cell number was higher on the TiO(2) films (R(a) = 0 and 40 nm) than on the corresponding glass substrates and the standard polystyrene dishes. On day 7, all TiO(2) films contained higher cell numbers than the corresponding glass substrates, and the cells on the TiO(2) films with R(a) = 40 and 100 nm also contained a higher concentration of β-actin. These results indicate that TiO(2) coating had a positive influence on the adhesion and subsequent proliferation of MG63 cells. In addition, on all investigated materials, the cell population density achieved on day 7 decreased with increasing surface roughness. The concentration of osteocalcin, measured per mg of protein, was significantly lower in the cells on rougher TiO(2) films (R(a) = 100 and 170 nm) than in the cells on the polystyrene dishes. Thus, it can be concluded that the adhesion, growth, and phenotypic maturation of MG63 cells were controlled by the interplay between the material chemistry and surface topography, and were usually better on smoother and TiO(2)-coated surfaces than on rougher and uncoated glass substrates.
Collapse
Affiliation(s)
- Marta Vandrovcova
- Department of Growth and Differentiation of Cell Populations, Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic.
| | | | | | | | | | | | | |
Collapse
|
137
|
Dohaithem A, Al-Nasser A, Al-Badah A, Al-Nazhan S, Al-Maflehi N. An in vitro evaluation of antifungal activity of bioaggregate. ACTA ACUST UNITED AC 2012; 112:e27-30. [PMID: 21689954 DOI: 10.1016/j.tripleo.2011.03.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Revised: 03/10/2011] [Accepted: 03/25/2011] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate, in vitro, the antifungal effect of bioaggregate (BA) against Candida albicans by using the direct contact method. STUDY DESIGN BA was tested freshly mixed and after 24-hour set on C. albicans. The tested BA was incubated with C. albicans in plastic tissue clusters for 1 hour, 24 hours, and 3 and 5 days. Aliquots of 0.1 mL were taken from each well at the end of the incubation periods and transfered to tubes containing 5 mL fresh Sabouraud broth. All tubes were vortexed and then incubated at 37°C and observed for the subsequent 5 days. Growth of the fungi was observed daily by the presence of turbidity in the tubes. The results were statistically analyzed by using Kaplan-Meier test. RESULTS The freshly mixed and set BA had no antifungal effect at 1 and 24 hours of contact. Both mixes demonstrated complete fungicidal activity after 24 hours' contact. Statistical analysis showed a highly significant difference between the negative and positive control groups (P < .001) and a significant difference between the freshly mixed and 24-hour set BA groups (P < .001) at 24 hours. CONCLUSIONS BA (freshly mixed and 24-hour set) was effective against C. albicans after 24 hours.
Collapse
|
138
|
|
139
|
Bormann KH, Gellrich NC, Kniha H, Dard M, Wieland M, Gahlert M. Biomechanical evaluation of a microstructured zirconia implant by a removal torque comparison with a standard Ti-SLA implant. Clin Oral Implants Res 2011; 23:1210-6. [DOI: 10.1111/j.1600-0501.2011.02291.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/03/2011] [Indexed: 11/28/2022]
Affiliation(s)
- Kai-Hendrik Bormann
- Department of Oral and Maxillofacial Surgery; Hannover Medical School; Hannover; Germany
| | - Nils-Claudius Gellrich
- Department of Oral and Maxillofacial Surgery; Hannover Medical School; Hannover; Germany
| | | | | | | | | |
Collapse
|
140
|
Daood U, Bandey N, Qasim SB, Omar H, Khan SA. Surface characterization analysis of failed dental implants using scanning electron microscopy. Acta Odontol Scand 2011; 69:367-73. [PMID: 21449690 DOI: 10.3109/00016357.2011.569507] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To investigate the failure of 15 dental implants (Paragon/Zimmer) in relation to their surface quality. MATERIALS AND METHODS The study comprised of 15 dental implants (7 mm D Advent Implant, 3.9 mm D apex design implant), which were followed from surgery to completion of prosthetic restorations. The implants were placed during a 6-year period from 2003-2009 in non-smoking patients (male; 7, females; 5). There were eight upper and seven lower implants. Surface characterization after immersion in SBF of these failed implants was investigated using SEM and EDS compared to that of an unused implant of the same brand. RESULTS Results revealed that, following immersion in SBF, the implant surfaces showed new components like Ca(+), Na(+) and Cl(-), but in trace quantities. CONCLUSIONS After SEM observation and EDS analysis, it was concluded that the apatite layer formation could not be verified.
Collapse
Affiliation(s)
- Umer Daood
- International Medical University, Malaysia.
| | | | | | | | | |
Collapse
|
141
|
Moon HJ, Yun YP, Han CW, Kim MS, Kim SE, Bae MS, Kim GT, Choi YS, Hwang EH, Lee JW, Lee JM, Lee CH, Kim DS, Kwon IK. Effect of heparin and alendronate coating on titanium surfaces on inhibition of osteoclast and enhancement of osteoblast function. Biochem Biophys Res Commun 2011; 413:194-200. [DOI: 10.1016/j.bbrc.2011.08.057] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2011] [Accepted: 08/11/2011] [Indexed: 11/27/2022]
|
142
|
Barter S, Stone P, Brägger U. A pilot study to evaluate the success and survival rate of titanium-zirconium implants in partially edentulous patients: results after 24 months of follow-up. Clin Oral Implants Res 2011; 23:873-81. [DOI: 10.1111/j.1600-0501.2011.02231.x] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
143
|
VANDROVCOVÁ M, BAČÁKOVÁ L. Adhesion, Growth and Differentiation of Osteoblasts on Surface-Modified Materials Developed for Bone Implants. Physiol Res 2011; 60:403-17. [DOI: 10.33549/physiolres.932045] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
This review briefly outlines the history and possibilities of bone reconstruction using various types of artificial materials, which allow interaction with cells only on the surface of the implant or enable ingrowth of cells inside the material. Information is also provided on the most important properties of bone cells taking part in bone tissue development, and on diseases and regeneration. The most common cell types used for testing cell-material interaction in vitro are listed, and the most commonly used approaches to this testing are also mentioned. A considerable part of this review is dedicated to the physical and chemical properties of the material surface, which are decisive for the cell-material interaction, and also to modifications to the surface of the material aimed at integrating it better with the surrounding bone tissue. Special attention is paid to the effects of nanoscale and microscale surface roughness on cell behaviour, to material surface patterning, which allows regionally-selective adhesion and growth of cells, and also to the surface chemistry. In addition, coating the materials with bioactive layers is examined, particularly those created by deposition of fullerenes, hybrid metal-fullerene composites, carbon nanotubes, nanocrystalline diamond films, diamond-like carbon, and nanocomposite hydrocarbon plasma polymer films enriched with metals.
Collapse
Affiliation(s)
| | - L. BAČÁKOVÁ
- Department of Growth and Differentiation of Cell Populations, Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| |
Collapse
|
144
|
Surface characteristics and biological studies of hydroxyapatite coating by a new method. J Biomed Mater Res B Appl Biomater 2011; 98:395-407. [DOI: 10.1002/jbm.b.31864] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 03/26/2011] [Accepted: 03/30/2011] [Indexed: 11/07/2022]
|
145
|
OSTEOBLAST AND GINGIVAL FIBROBLAST MARKERS IN DENTAL IMPLANT STUDIES. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2011; 155:109-16. [DOI: 10.5507/bp.2011.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
|
146
|
Barros RN, Gouvêa CVDD. Prophylactic agents and bacterial adherence to titanium. Clin Oral Implants Res 2011; 22:1221-6. [DOI: 10.1111/j.1600-0501.2010.02099.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
147
|
Marya K, Dua JS, Chawla S, Sonoo PR, Aggarwal A, Singh V. Polyetheretherketone (PEEK) Dental Implants: A Case for Immediate Loading. ACTA ACUST UNITED AC 2011. [DOI: 10.5005/jp-journals-10012-1043] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
148
|
Ehrensberger MT, Sivan S, Gilbert JL. Titanium is not "the most biocompatible metal" under cathodic potential: The relationship between voltage and MC3T3 preosteoblast behavior on electrically polarized cpTi surfaces. J Biomed Mater Res A 2010; 93:1500-9. [PMID: 20014293 DOI: 10.1002/jbm.a.32622] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
An electrochemically controlled system has been developed which allows for cell culture directly on electrically polarized metal surfaces with simultaneous control and assessment of the electrochemical current, potential, and impedance of the interface. This system was utilized in this study to assess the interactions between electrochemically polarized commercially pure titanium (cpTi) and MC3T3 preosteoblast cells. Cells were cultured on CpTi for 24 h at static potentials between -1000 mV and +1000 mV vs. Ag/AgCl and cell morphology (SEM and cell area) and viability (MTT and Live-Dead assay) were assessed along with the electrochemical current densities and surface oxide impedance properties. The results indicate that cathodic polarization in the range of -600 mV to -1000 mV markedly reduces the spreading and viability of cells cultured directly on cpTi within 24 h, while anodic polarization (-300 mV to +1000 mV) out to 72 h shows no difference in cell behavior as compared to the OCP condition. Analysis of the relationship between the cell outcomes and the electrochemical current densities and impedance indicated the presence of voltage-dependent electrochemical thresholds (cathodic current density, i(c) > 1.0 microA/cm(2), R(p) < 10(5) Omega cm(2)) which may control the biocompatibility of cpTi. In addition, these outcomes have direct clinical significance for modular orthopedic implants whose potential can shift, via fretting corrosion, down into the range of potentials exhibiting poor cell behavior.
Collapse
Affiliation(s)
- Mark T Ehrensberger
- Department of Orthopedic Surgery, State University of New York at Buffalo, Buffalo, New York 14214, USA
| | | | | |
Collapse
|
149
|
Durual S, Pernet F, Rieder P, Mekki M, Cattani-Lorente M, Wiskott HWA. Titanium nitride oxide coating on rough titanium stimulates the proliferation of human primary osteoblasts. Clin Oral Implants Res 2010; 22:552-9. [PMID: 21087318 DOI: 10.1111/j.1600-0501.2010.02033.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Titanium is widely used in contemporary endosseous implantology and there is considerable thrust to further promote osseointegration by implant surface modifications. The aim of this study was to evaluate the effect of a titanium-nitride-oxide (TiNOx) coating on commercially pure microroughened titanium by assessing the proliferation and differentiation of human primary osteoblasts. MATERIALS AND METHODS Cell proliferation, gene expression, alkaline phosphatase activity, osteoprotegerin and osteocalcin secretion were analyzed for a time course of 3 weeks, with or without additional stimulation by 1.25(OH)(2) vitamin D(3) 100 nM. RESULTS A 1.5-fold increase in the proliferation rate of cells grown on TiNOx-coated titanium as compared with uncoated surfaces was observed. SEM views indicated that the cells' normal morphology with their numerous extensions was maintained. The differentiation process on the TiNOx surface was only affected to a minor degree and translated into a slight delay in osteoblast maturation when compared to uncoated titanium. CONCLUSION Pending confirmation of these results in vivo, TiNOx coatings could potentially accelerate and enhance osseointegration.
Collapse
Affiliation(s)
- S Durual
- Laboratory of Biomaterials, University of Geneva, Switzerland.
| | | | | | | | | | | |
Collapse
|
150
|
A Comparison Study of the Osseointegration of Zirconia and Titanium Dental Implants. A Biomechanical Evaluation in the Maxilla of Pigs. Clin Implant Dent Relat Res 2010; 12:297-305. [DOI: 10.1111/j.1708-8208.2009.00168.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|