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Yang KR, Hong MH. Improved Biocompatibility and Osseointegration of Nanostructured Calcium-Incorporated Titanium Implant Surface Treatment (XPEED ®). MATERIALS (BASEL, SWITZERLAND) 2024; 17:2707. [PMID: 38893971 PMCID: PMC11173531 DOI: 10.3390/ma17112707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 05/27/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024]
Abstract
Surface treatment of implants facilitates osseointegration, with nanostructured surfaces exhibiting accelerated peri-implant bone regeneration. This study compared bone-to-implant contact (BIC) in implants with hydroxyapatite (HA), sand-blasted and acid-etched (SLA), and SLA with calcium (Ca)-coated (XPEED®) surfaces. Seventy-five disk-shaped grade 4 Ti specimens divided into three groups were prepared, with 16 implants per group tested in New Zealand white rabbits. Surface characterization was performed using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), digital microscopy, and a contact angle analyzer. Cell viability, proliferation, and adhesion were assessed using MC3T3-E1 cells. Apatite formation was evaluated using modified simulated body fluid (m-SBF) incubation. After 4 weeks of healing, the outcomes reviewed were BIC, bone area (BA), removal torque tests, and histomorphometric evaluation. A microstructure analysis revealed irregular pores across all groups, with the XPEED group exhibiting a nanostructured Ca-coated surface. Surface characterization showed a crystalline CaTiO3 layer on XPEED surfaces, with evenly distributed Ca penetrating the implants. All surfaces provided excellent environments for cell growth. The XPEED and SLA groups showed significantly higher cell density and viability with superior osseointegration than HA (p < 0.05); XPEED exhibited the highest absorbance values. Thus, XPEED surface treatment improved implant performance, biocompatibility, stability, and osseointegration.
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Affiliation(s)
- Kyung Ran Yang
- Daegu Mir Dental Hospital, Jung-gu, Daegu 41934, Republic of Korea;
| | - Min-Ho Hong
- Department of Dental Laboratory Science, College of Health Sciences, Catholic University of Pusan, 57 Oryundae-ro, Geumjeong-gu, Busan 46252, Republic of Korea
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Nagamoto K, Nakanishi K, Akasaka T, Abe S, Yoshihara K, Nakamura M, Hayashi H, Takemoto S, Tamura M, Kitagawa Y, Van Meerbeek B, Yoshida Y. Investigation of a new implant surface modification using phosphorylated pullulan. Front Bioeng Biotechnol 2024; 12:1378039. [PMID: 38840668 PMCID: PMC11150837 DOI: 10.3389/fbioe.2024.1378039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 05/01/2024] [Indexed: 06/07/2024] Open
Abstract
Various implant surface treatment methods have been developed to achieve good osseointegration in implant treatment. However, some cases remain impossible to treat with implants because osseointegration is not obtained after implantation, and the implants fail. Thus, this study focused on phosphorylated pullulan because of its adhesiveness to titanium (Ti) and bone, high biocompatibility, and early replacement with bone. In this study, the response of bone-related cells to phosphorylated pullulan was evaluated to develop a new surface treatment method. Saos-2 (human osteosarcoma-derived osteoblast-like cells), MC3T3-E1 (mouse calvaria-derived osteoblast-like cells), and RAW264.7 (mouse macrophage-like cells) were used. In evaluating cellular responses, phosphorylated pullulan was added to the culture medium, and cell proliferation and calcification induction tests were performed. The proliferation and calcification of cells on the surface of Ti disks coated with phosphorylated pullulan were also evaluated. In addition, bone morphogenetic protein-2 (BMP-2), an osteogenic factor, was used to evaluate the role of phosphorylated pullulan as a drug carrier in inducing calcification on Ti disks. Phosphorylated pullulan tended to promote the proliferation of osteoblast-like cells and the formation of calcification on Ti disks coated with phosphorylated pullulan. Ti disks coated with phosphorylated pullulan loaded with BMP-2 enhanced calcification. Phosphorylated pullulan inhibited osteoclast-like cell formation. These results are due to the properties of phosphorylated pullulan, such as adhesiveness to titanium and drug-loading function. Therefore, phosphorylated pullulan effectively promotes bone regeneration when coated on titanium implants and is useful for developing a new surface treatment method.
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Affiliation(s)
- Kanako Nagamoto
- Oral Diagnosis and Medicine, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Ko Nakanishi
- Department of Biomaterials and Bioengineering, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan
- BIOMAT, Department of Oral Sciences, KU Leuven, Leuven, Belgium
| | - Tsukasa Akasaka
- Department of Biomaterials and Bioengineering, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Shigeaki Abe
- Department of Dental and Biomedical Materials Science, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Kumiko Yoshihara
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology, Takamatsu, Japan
| | - Mariko Nakamura
- School of Clinical Psychology, Kyushu University of Medical Science, Miyazaki, Japan
| | - Hiroshi Hayashi
- Section for Dental Innovation, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Shinji Takemoto
- Department of Biomedical Engineering, Iwate Medical University, Shiwa, Japan
| | - Masato Tamura
- Department of Oral Biochemistry and Molecular Biology, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Yoshimasa Kitagawa
- Oral Diagnosis and Medicine, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan
| | | | - Yasuhiro Yoshida
- Department of Biomaterials and Bioengineering, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan
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Antal MA, Kiscsatári R, Braunitzer G, Piffkó J, Varga E, Eliaz N. Assessment of a novel electrochemically deposited smart bioactive trabecular coating (SBTC®): a randomized controlled clinical trial. Head Face Med 2024; 20:24. [PMID: 38627712 PMCID: PMC11022491 DOI: 10.1186/s13005-024-00426-0] [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: 12/15/2023] [Accepted: 03/28/2024] [Indexed: 04/19/2024] Open
Abstract
OBJECTIVES A randomized controlled clinical trial of dental implants was conducted to compare the clinical properties of a novel electrochemically deposited calcium phosphate coating to those of a common marketed surface treatment. MATERIAL AND METHODS Forty implants of the same brand and type were placed in 20 fully edentulous participants requiring mandibular implantation. The two study groups were defined by the surface treatment of the implants. 20 implants in the control group were coated via a commercial electrochemical surface treatment that forms a mixture of brushite and hydroxyapatite, while the remaining 20 in the test group were coated with a novel electrochemical Smart Bioactive Trabecular Coating (SBTC®). A split-mouth design was employed, with each participants receiving one control implant in one mandibular side and a test implant in the other. To mitigate potential operator-handedness bias, control and test implants were randomly assigned to mandibular sides. All cases underwent digital planning, implant placement with a static surgical guide, and participants received locator-anchored full-arch dentures. The primary outcome was implant stability (measured using Osstell ISQ) assessed at insertion, loading, and then 3 months, 9 months, and 2 years post-insertion. The secondary outcome was bone level change (in millimeters) over the 2-year observation period. Oral health-related quality of life (OHRQL) was monitored using the OHIP-14 questionnaire. Complications and adverse events were recorded. RESULTS Successful osseointegration and implant stability were achieved in all cases, allowing loading. ISQ values steadily increased throughout the observation period. While no significant differences were observed between the SBTC® and control coatings, the test group exhibited a higher ISQ gain. Bone resorption was somewhat lower in the SBTC® but not significantly so. Patients' OHRQL significantly improved after denture delivery and remained stable throughout the follow-up. No complications or adverse events were observed. CONCLUSIONS Based on the study results, we conclude that the new surface treatment is a safe alternative to the widely used control surface, demonstrating similar osseointegrative properties and time-dependent bone level changes. Further research may explore the broader implications of these findings. TRIAL REGISTRATION The study is registered on clinicaltrials.gov under the identifier ID: NCT06034171.
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Affiliation(s)
- Mark Adam Antal
- Department of Operative and Esthetic Dentistry, Faculty of Dentistry, University of Szeged, 6720 Tisza Lajos Krt. 64-66, Szeged, Hungary.
| | - Ramóna Kiscsatári
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | | | - József Piffkó
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | | | - Noam Eliaz
- Department of Materials Science and Engineering, Tel-Aviv University, Tel Aviv, Israel
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Sequeira DB, Diogo P, Gomes BPFA, Peça J, Santos JMM. Scaffolds for Dentin-Pulp Complex Regeneration. MEDICINA (KAUNAS, LITHUANIA) 2023; 60:7. [PMID: 38276040 PMCID: PMC10821321 DOI: 10.3390/medicina60010007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/24/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024]
Abstract
Background and Objectives: Regenerative dentistry aims to regenerate the pulp-dentin complex and restore those of its functions that have become compromised by pulp injury and/or inflammation. Scaffold-based techniques are a regeneration strategy that replicate a biological environment by utilizing a suitable scaffold, which is considered crucial for the successful regeneration of dental pulp. The aim of the present review is to address the main characteristics of the different scaffolds, as well as their application in dentin-pulp complex regeneration. Materials and Methods: A narrative review was conducted by two independent reviewers to answer the research question: What type of scaffolds can be used in dentin-pulp complex regeneration? An electronic search of PubMed, EMBASE and Cochrane library databases was undertaken. Keywords including "pulp-dentin regeneration scaffold" and "pulp-dentin complex regeneration" were used. To locate additional reports, reference mining of the identified papers was undertaken. Results: A wide variety of biomaterials is already available for tissue engineering and can be broadly categorized into two groups: (i) natural, and (ii) synthetic, scaffolds. Natural scaffolds often contain bioactive molecules, growth factors, and signaling cues that can positively influence cell behavior. These signaling molecules can promote specific cellular responses, such as cell proliferation and differentiation, crucial for effective tissue regeneration. Synthetic scaffolds offer flexibility in design and can be tailored to meet specific requirements, such as size, shape, and mechanical properties. Moreover, they can be functionalized with bioactive molecules, growth factors, or signaling cues to enhance their biological properties and the manufacturing process can be standardized, ensuring consistent quality for widespread clinical use. Conclusions: There is still a lack of evidence to determine the optimal scaffold composition that meets the specific requirements and complexities needed for effectively promoting dental pulp tissue engineering and achieving successful clinical outcomes.
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Affiliation(s)
- Diana B. Sequeira
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal (P.D.)
- Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal;
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
| | - Patrícia Diogo
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal (P.D.)
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
| | - Brenda P. F. A. Gomes
- Department of Restorative Dentistry, Division of Endodontics, Piracicaba Dental School, State University of Campinas—UNICAMP, Piracicaba 13083-970, Brazil;
| | - João Peça
- Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal;
- Department of Life Sciences, Faculty of Science and Technology, University of Coimbra, 3000-456 Coimbra, Portugal
| | - João Miguel Marques Santos
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal (P.D.)
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR) and Center of Investigation on Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
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Erdem U, Dogan D, Bozer BM, Turkoz MB, Yıldırım G, Metin AU. Fabrication of mechanically advanced polydopamine decorated hydroxyapatite/polyvinyl alcohol bio-composite for biomedical applications: In-vitro physicochemical and biological evaluation. J Mech Behav Biomed Mater 2022; 136:105517. [PMID: 36270152 DOI: 10.1016/j.jmbbm.2022.105517] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/03/2022] [Accepted: 10/06/2022] [Indexed: 11/06/2022]
Abstract
In this study, polydopamine (PDA) coated hydroxyapatite (HA) reinforced polyvinyl alcohol (PVA) films were produced to be used in biomedical applications such as bone tissue regeneration. pDA is coated not only to prevent the agglomeration of HA when encountering interstitial fluids but also to strongly bind the PVA for the interaction between materials so that the mechanical performance becomes more stabilized. pDA was coated on the hydroxyapatite surface using a radical polymerization technique, and the reinforced PVA were produced with pDA-coated HA (pDA-HA/PVA) nanoparticles. Fundamental characteristic properties of pDA-HA/PVA nanocomposite films were examined by morphological/chemical (SEM-EDS), microstructural (XRD, Ft-IR, and Raman), thermodynamic (TGA and TM), mechanical performance (Vickers microhardness) and biological activity analysis (MTT, genotoxicity and antimicrobial efficacy investigations). Physicochemical analysis showed that all the samples studied exhibited homogeneous mineral distributions through the main structures. According to TGA, TMA and hardness tests, the new composite structure possessed higher mechanical properties than neat PVA. Further, pDA-HA/PVA nanocomposites exhibited high antibacterial capacities against Acinetobacter Baumannii (A.Baumannii), Staphylococcus aureus (S. aureus), and Streptococcus mutans (S.mutans). Moreover, the new nanocomposites were noted to present good biocompatibility for fibroblast (L929) cells and to support remarkably MCS cells. All in all, this comprehensive work shows that the thermo-mechanically improved pDA-HA/PVA films will increase the application fields of PVA in biomedical fields especially tooth-bone treatments for coating, filling, or occlusion purposes.
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Affiliation(s)
- Umit Erdem
- Kirikkale University, Scientific and Tech. Research Center, Kirikkale, Turkey, 71450.
| | - Deniz Dogan
- Kirikkale University, Faculty of Science, Department of Chemistry, 71450, Turkey
| | - Busra M Bozer
- Hitit University, Scientific Technical App. and Research Center, Corum, Turkey, 19030
| | - Mustafa B Turkoz
- Karabuk University, Faculty of Engineering, Electric and Electronics Engineering, Karabuk, Turkey, 78050
| | - Gurcan Yıldırım
- Abant Izzet Baysal University, Faculty of Engineering, Mechanical Engineering, Bolu, Turkey, 14280
| | - Aysegul U Metin
- Kirikkale University, Faculty of Science, Department of Chemistry, 71450, Turkey
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Periodontal Therapy Using Bioactive Glasses: A Review. PROSTHESIS 2022. [DOI: 10.3390/prosthesis4040052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This paper reviews the use of bioactive glasses as materials for periodontal repair. Periodontal disease causes bone loss, resulting in tooth loosening and eventual tooth loss. However, it can be reversed using bioactive glass, typically the original 45S5 formulation (Bioglass®) at the defect site. This is done either by plcing bioactive glass granules or a bioactive glass putty at the defect. This stimulates bone repair and causes the defect to disappear. Another use of bioactive glass in periodontics is to repair so-called furcation defects, i.e., bone loss due to infection at the intersection of the roots in multi-rooted teeth. This treatment also gives good clinical outcomes. Finally, bioactive glass has been used to improve outcomes with metallic implants. This involves either placing bioactive glass granules into the defect prior to inserting the metal implant, or coating the implant with bioactive glass to improve the likelihood of osseointegration. This needs the glass to be formulated so that it does not crack or debond from the metal. This approach has been very successful, and bioactive glass coatings perform better than those made from hydroxyapatite.
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Moradi A, Pakizeh M, Ghassemi T. A review on bovine hydroxyapatite; extraction and characterization. Biomed Phys Eng Express 2021; 8. [PMID: 34879359 DOI: 10.1088/2057-1976/ac414e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 12/08/2021] [Indexed: 11/12/2022]
Abstract
High rate of bone grafting surgeries emphasizes the need for optimal bone substitutes. Biomaterials mimicking the interconnected porous structure of the original bone with osteoconductive and osteoinductive capabilities have long been considered. Hydroxyapatite (HA), as the main inorganic part of natural bone, has exhibited excellent regenerative properties in bone tissue engineering. This manuscript reviews the HA extraction methods from bovine bone, as one of the principal biosources. Essential points in the extraction process have also been highlighted. Characterization of the produced HA through gold standard methods such as XRD, FTIR, electron microscopies (SEM and TEM), mechanical/thermodynamic tests, and bioactivity analysis has been explained in detail. Finally, future perspectives for development of HA constructs are mentioned.
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Affiliation(s)
- Ali Moradi
- Clinical Research Development Unit, Ghaem Hospital, Mashhad University of Medical Sciences (MUM), Mashhad, Iran.,Orthopedic Research Center, Mashhad University of Medical Sciences (MUM), Mashhad, Iran
| | - Majid Pakizeh
- Department of Chemical Engineering, Hamedan University of Technology, Hamedan, Iran
| | - Toktam Ghassemi
- Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad (FUM), Mashhad, Iran
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Rousseau N, Msolli I, Chabrand P, Destainville A, Richart O, Milan JL. Local tissue effects and peri-implant bone healing induced by implant surface treatment: an in vivo study in the sheep. J Periodontal Res 2021; 56:789-803. [PMID: 33788298 DOI: 10.1111/jre.12878] [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: 09/02/2020] [Revised: 02/16/2021] [Accepted: 03/03/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The aim of this study was to assess, through biological analysis, the local effects and osseointegration of dental implants incorporating surface micro/nanofeatures compared with implants of identical design without surface treatment. BACKGROUND Known to impact bone cell behavior, surface chemical and topography modifications target improved osseointegration and long-term success of dental implants. Very few studies assess the performance of implants presenting both micro- and nanofeatures in vivo on the animal models used in preclinical studies for medical device certification. METHODS Implant surfaces were characterized in terms of topography and surface chemical composition. After 4 weeks and 13 weeks of implantation in sheep femoral condyles, forty implants were evaluated through micro-computed tomography, histopathologic, and histomorphometric analyses. RESULTS No local adverse effects were observed around implants. Histomorphometric analyses showed significantly higher bone-to-implant contact in the coronal region of the surface-treated implant at week 4 and week 13, respectively, was 79.3 ± 11.2% and 86.4 ± 6.7%, compared with the untreated implants (68.3 ± 8.8% and 74.8 ± 13%). Micro-computed tomography analyses revealed that healing patterns differed between coronal and apical regions, with higher coronal bone-to-implant contact at week 13. Histopathologic results showed, at week 13, bone healing around the surface-treated implant with undistinguishable defect margins, while the untreated implant still presented bone condensation and traces of the initial drill defect. CONCLUSION Our results suggest that the surface-treated implant not only shows no deleterious effects on local tissues but also promotes faster bone healing around the implant.
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Affiliation(s)
- Nicolas Rousseau
- CNRS, ISM, Aix Marseille Univ, Marseille, France.,Selenium Medical, La Rochelle, France
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Wehner C, Behm C, Husejnagic S, Moritz A, Rausch-Fan X, Andrukhov O. Effect of Multi-Phosphonate Coating of Titanium Surfaces on Osteogenic Potential. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E5777. [PMID: 33348895 PMCID: PMC7766650 DOI: 10.3390/ma13245777] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/14/2020] [Accepted: 12/15/2020] [Indexed: 12/27/2022]
Abstract
The aim of this study was to evaluate the impact of a novel multi-phosphonate (MP) coating strategy of dental implant surfaces on the expression of osteogenesis-related factors in vitro. MG-63 human osteoblast-like cells, bone marrow mesenchymal stem cells (BM-MSCs), and human periodontal ligament stem cells (hPDLSCs) were cultured separately on titanium disks with and without MP coating. Cell attachment was visualized by focal adhesion and actin cytoskeleton staining. The proliferation and gene expression of the markers related to osteogenesis and bone turnover were measured after 48 and 120 h of cell culture. Actin cytoskeleton assembly and focal adhesion were similar between test surfaces within each cell type but differed from those on tissue culture plastic (TCP). The proliferation of MG-63 cells and PDLSCs was comparable on all surfaces, while BM-MSCs showed an increase on tissue culture plastic (TCP) versus titanium. The gene expression of osteoprotegerin and receptor activator of nuclear factor-kappa B ligand was higher in MG-63 cells grown on MP-coated surfaces. At the same time, osteocalcin was decreased compared to the other surfaces. Collagen type I gene expression after 120 h was significantly lower in hPDLSCs cultivated on MP-coated surfaces. Within the limitations of this study, MP coating on titanium surfaces might have a slight beneficial effect on bone turnover in vitro.
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Affiliation(s)
- Christian Wehner
- Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria; (C.W.); (S.H.); (A.M.); (X.R.-F.)
| | - Christian Behm
- Competence Center for Periodontal Research, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria;
- Division of Orthodontics, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria
| | - Selma Husejnagic
- Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria; (C.W.); (S.H.); (A.M.); (X.R.-F.)
| | - Andreas Moritz
- Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria; (C.W.); (S.H.); (A.M.); (X.R.-F.)
| | - Xiaohui Rausch-Fan
- Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria; (C.W.); (S.H.); (A.M.); (X.R.-F.)
- Competence Center for Periodontal Research, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria;
| | - Oleh Andrukhov
- Competence Center for Periodontal Research, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria;
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Raut HK, Das R, Liu Z, Liu X, Ramakrishna S. Biocompatibility of Biomaterials for Tissue Regeneration or Replacement. Biotechnol J 2020; 15:e2000160. [DOI: 10.1002/biot.202000160] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/19/2020] [Indexed: 12/25/2022]
Affiliation(s)
- Hemant Kumar Raut
- Division of Engineering Product Development Singapore University of Technology and Design 8 Somapah Rd Singapore 487372 Republic of Singapore
| | - Rupambika Das
- Division of Engineering Product Development Singapore University of Technology and Design 8 Somapah Rd Singapore 487372 Republic of Singapore
| | - Ziqian Liu
- Department of Mechanical Materials, and Manufacturing Engineering The University of Nottingham Ningbo, China 199 Taikang East Road Ningbo 315100 China
| | - Xiaoling Liu
- Department of Mechanical Materials, and Manufacturing Engineering The University of Nottingham Ningbo, China 199 Taikang East Road Ningbo 315100 China
| | - Seeram Ramakrishna
- Centre for Nanofibers and Nanotechnology Department of Mechanical Engineering National University of Singapore Singapore 117574 Singapore
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Sommer U, Laurich S, de Azevedo L, Viehoff K, Wenisch S, Thormann U, Alt V, Heiss C, Schnettler R. In Vitro and In Vivo Biocompatibility Studies of a Cast and Coated Titanium Alloy. Molecules 2020; 25:E3399. [PMID: 32727093 PMCID: PMC7436028 DOI: 10.3390/molecules25153399] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/24/2020] [Accepted: 07/24/2020] [Indexed: 12/13/2022] Open
Abstract
The biocompatibility of a cast porous and with a calcium titanate reaction layer functionalized titanium alloy (Ti-6Al-7Nb) was tested by means of cell culture, and a small (rat) and large animal (sheep) model. The uncoated titanium material served as a control. In-vitro tests included the validation of osteoblast-like cells attached to the surface of the material with scanning electron microscopy and immunofluorescence of cytoskeletal actin as well as their osteogenic development, the ability to mineralize, and their vitality. Following the in-vitro tests a small animal (rat) and big animal (sheep) model were accomplished by inserting a cylindrical titanium implant into a drill hole defect in the femoral condyle. After 7, 14, and 30 days (rat) and 6 months (sheep) the condyles were studied regarding histological and histomorphometrical characteristics. Uncoated and coated material showed a good biocompatibility both in cell culture and animal models. While the defect area in the rat is well consolidated after 30 days, the sheep show only little bone inside the implant after 6 months, possibly due to stress shielding. None of the executed methods indicated a statistically significant difference between coated and uncoated material.
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Affiliation(s)
- Ursula Sommer
- Experimental Trauma Surgery, Justus-Liebig-University Giessen, Aulweg 128 (ForMED), 35392 Giessen, Germany; (S.L.); (L.d.A.); (K.V.); (U.T.); (C.H.)
| | - Stephan Laurich
- Experimental Trauma Surgery, Justus-Liebig-University Giessen, Aulweg 128 (ForMED), 35392 Giessen, Germany; (S.L.); (L.d.A.); (K.V.); (U.T.); (C.H.)
| | - Lucie de Azevedo
- Experimental Trauma Surgery, Justus-Liebig-University Giessen, Aulweg 128 (ForMED), 35392 Giessen, Germany; (S.L.); (L.d.A.); (K.V.); (U.T.); (C.H.)
| | - Katharina Viehoff
- Experimental Trauma Surgery, Justus-Liebig-University Giessen, Aulweg 128 (ForMED), 35392 Giessen, Germany; (S.L.); (L.d.A.); (K.V.); (U.T.); (C.H.)
| | - Sabine Wenisch
- Clinic of Small Animals, c/o Institute of Veterinary Anatomy, Histology and Embryology, Justus-Liebig-University Giessen, Frankfurter Strasse 98, 35392 Giessen, Germany;
| | - Ulrich Thormann
- Experimental Trauma Surgery, Justus-Liebig-University Giessen, Aulweg 128 (ForMED), 35392 Giessen, Germany; (S.L.); (L.d.A.); (K.V.); (U.T.); (C.H.)
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Giessen-Marburg GmbH, Campus Giessen, Rudolf-Buchheim-Str. 7, 35385 Giessen, Germany
| | - Volker Alt
- Department of Trauma Surgery, University Medical Center Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany;
| | - Christian Heiss
- Experimental Trauma Surgery, Justus-Liebig-University Giessen, Aulweg 128 (ForMED), 35392 Giessen, Germany; (S.L.); (L.d.A.); (K.V.); (U.T.); (C.H.)
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Giessen-Marburg GmbH, Campus Giessen, Rudolf-Buchheim-Str. 7, 35385 Giessen, Germany
| | - Reinhard Schnettler
- Department of Oral and Maxillofacial Surgery, Division for Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany;
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Wehner C, Lettner S, Moritz A, Andrukhov O, Rausch-Fan X. Effect of bisphosphonate treatment of titanium surfaces on alkaline phosphatase activity in osteoblasts: a systematic review and meta-analysis. BMC Oral Health 2020; 20:125. [PMID: 32334598 PMCID: PMC7183598 DOI: 10.1186/s12903-020-01089-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 03/26/2020] [Indexed: 12/15/2022] Open
Abstract
Background Bisphosphonate coating of dental implants is a promising tool for surface modification aiming to improve the osseointegration process and clinical outcome. The biological effects of bisphosphonates are thought to be mainly associated with osteoclasts inhibition, whereas their effects on osteoblast function are unclear. A potential of bisphosphonate coated surfaces to stimulate osteoblast differentiation was investigated by several in vitro studies with contradictory results. The purpose of this systematic review and meta-analysis was to evaluate the effect of bisphosphonate coated implant surfaces on alkaline phosphatase activity in osteoblasts. Methods In vitro studies that assessed alkaline phosphatase activity in osteoblasts following cell culture on bisphosphonate coated titanium surfaces were searched in electronic databases PubMed/MEDLINE, Scopus and ISI Web of Science. Animal studies and clinical trials were excluded. The literature search was restricted to articles written in English and published up to August 2019. Publication bias was assessed by the construction of funnel plots. Results Eleven studies met the inclusion criteria. Meta-analysis showed that coating of titanium surfaces with bisphosphonates increases alkaline phosphatase activity in osteoblasts after 3 days (n = 1), 7 (n = 7), 14 (n = 6) and 21 (n = 3) days. (7 days beta coefficient = 1.363, p-value = 0.001; 14 days beta coefficient = 1.325, p-value < 0.001; 21 days beta coefficient = 1.152, p-value = 0.159). Conclusions The meta-analysis suggests that bisphosphonate coatings of titanium implant surfaces may have beneficial effects on osteogenic behaviour of osteoblasts grown on titanium surfaces in vitro. Further studies are required to assess to which extent bisphosphonates coating might improve osseointegration in clinical situations.
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Affiliation(s)
- Christian Wehner
- Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, A-1090, Vienna, Austria
| | - Stefan Lettner
- Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Andreas Moritz
- Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, A-1090, Vienna, Austria
| | - Oleh Andrukhov
- Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, A-1090, Vienna, Austria.
| | - Xiaohui Rausch-Fan
- Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, A-1090, Vienna, Austria
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13
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Jung HD, Jang TS, Lee JE, Park SJ, Son Y, Park SH. Enhanced bioactivity of titanium-coated polyetheretherketone implants created by a high-temperature 3D printing process. Biofabrication 2019; 11:045014. [PMID: 31365916 DOI: 10.1088/1758-5090/ab376b] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Polyetheretherketone (PEEK), one of the potential alternatives to metallic materials for implants, necessarily involves high temperature process conditions to be three-dimensionally (3D) printed. We developed a 3D printing setup equipped with thermally stabilized modules of the printing nozzle and building chamber, by which the PEEK implants could be successfully manufactured. Under optimized printing conditions, the maximal mechanical strength of the 3D printed sample attained over 80% of the original bulk property of PEEK. To enhance the interfacial biocompatibility, the as-printed implants were postprocessed with titanium (Ti) sputtering. The Ti-coated surfaces were evaluated through characterization studies of x-ray diffraction spectra, microscopic topographies, and wetting properties. For the in vitro tests, preosteoblasts were cultured on the developed PEEK-Ti structures and evaluated in terms of cell adhesion, proliferation, and osteogenic differentiation. In addition, the bone regeneration capability of the PEEK-Ti implants was confirmed by animal experiments using a rabbit tibia defect model for a period of 12 weeks. In the overall in vitro and in vivo tests, we confirmed the superior bioactivities of the Ti-modified and 3D printed interface by comparisons between the samples of machined and printed samples with or without Ti coating. Taken together, the comprehensive manufacturing approaches that involve 3D printing and biocompatible postprocessing are expected to have universal applicability in a wide range of bone tissue engineering.
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Affiliation(s)
- Hyun-Do Jung
- Research Institute of Advanced Manufacturing Technology, Korea Institute of Industrial Technology, Incheon 21999, Republic of Korea
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14
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Surmenev RA, Surmeneva MA. A critical review of decades of research on calcium phosphate–based coatings: How far are we from their widespread clinical application? CURRENT OPINION IN BIOMEDICAL ENGINEERING 2019. [DOI: 10.1016/j.cobme.2019.02.003] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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15
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Albrektsson T, Wennerberg A. On osseointegration in relation to implant surfaces. Clin Implant Dent Relat Res 2019; 21 Suppl 1:4-7. [PMID: 30816639 DOI: 10.1111/cid.12742] [Citation(s) in RCA: 135] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/28/2019] [Accepted: 01/29/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND The understanding of mechanisms of osseointegration as well as applied knowledge about oral implant surfaces are of paramount importance for successful clinical results. PURPOSE The aim of the present article is to present an overview of osseointegration mechanisms and an introduction to surface innovations with relevance for osseointegration that will be published in the same supplement of Clinical Implant Dentistry and Related Research. MATERIALS AND METHODS The present article is a narrative review of some osseointegration and implant surface-related details. RESULTS AND CONCLUSIONS Osseointegration has a changed definition since it is realized today that oral implants are but foreign bodies and that this fact explains osseointegration as a protection mechanism of the tissues. Given adequate stability, bone tissue is formed around titanium implants to shield them from the tissues. Oral implant surfaces may be characterized by microroughness and nanoroughness, by surface chemical composition and by physical and mechanical parameters. An isotropic, moderately rough implant surface such as seen on the TiUnite device has displayed improved clinical results compared to previously used minimally rough or rough surfaces. However, there is a lack of clinical evidence supporting any particular type of nanoroughness pattern that, at best, is documented with results from animal studies. It is possible, but as yet unproven, that clinical results may be supported by a certain chemical composition of the implant surface. The same can be said with respect to hydrophilicity of implant surfaces; positive animal data may suggest some promise, but there is a lack of clinical evidence that hydrophilic implants result in improved clinical outcome of more hydrophobic surfaces. With respect to mechanical properties, it seems obvious that those must be encompassing the loading of oral implants, but we need more research on the mechanically ideal implant surface from a clinical aspect.
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Affiliation(s)
- Tomas Albrektsson
- Department of Biomaterials, University of Gothenburg, Gothenburg, Sweden.,Department of Prosthodontics, University of Malmö, Malmö, Sweden
| | - Ann Wennerberg
- Department of Prosthodontics, University of Gothenburg, Gothenburg, Sweden
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16
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Jeong J, Kim JH, Shim JH, Hwang NS, Heo CY. Bioactive calcium phosphate materials and applications in bone regeneration. Biomater Res 2019; 23:4. [PMID: 30675377 PMCID: PMC6332599 DOI: 10.1186/s40824-018-0149-3] [Citation(s) in RCA: 369] [Impact Index Per Article: 73.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 12/07/2018] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Bone regeneration involves various complex biological processes. Many experiments have been performed using biomaterials in vivo and in vitro to promote and understand bone regeneration. Among the many biomaterials, calcium phosphates which exist in the natural bone have been conducted a number of studies because of its bone regenerative property. It can be directly contributed to bone regeneration process or assist in the use of other biomaterials. Therefore, it is widely used in many applications and has been continuously studied. MAINBODY Calcium phosphate has been widely used in bone regeneration applications because it shows osteoconductive and in some cases osteoinductive features. The release of calcium and phosphorus ions regulates the activation of osteoblasts and osteoclasts to facilitate bone regeneration. The control of surface properties and porosity of calcium phosphate affects cell/protein adhesion and growth and regulates bone mineral formation. Properties affecting bioactivity vary depending on the types of calcium phosphates such as HAP, TCP and can be utilized in various applications because of differences in ion release, solubility, stability, and mechanical strength. In order to make use of these properties, different calcium phosphates have been used together or mixed with other materials to complement their disadvantages and to highlight their advantages. Calcium phosphate has been utilized to improve bone regeneration in ways such as increasing osteoconductivity for bone ingrowth, enhancing osteoinductivity for bone mineralization with ion release control, and encapsulating drugs or growth factors. CONCLUSION Calcium phosphate has been used for bone regeneration in various forms such as coating, cement and scaffold based on its unique bioactive properties and bone regeneration effectiveness. Additionally, several studies have been actively carried out to improve the efficacy of calcium phosphate in combination with various healing agents. By summarizing the properties of calcium phosphate and its research direction, we hope that calcium phosphate can contribute to the clinical treatment approach for bone defect and disease.
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Affiliation(s)
- Jiwoon Jeong
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 152-742 Republic of Korea
| | - Jung Hun Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742 Republic of Korea
| | - Jung Hee Shim
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Nathaniel S. Hwang
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 152-742 Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742 Republic of Korea
- N-Bio/BioMAX Institute, Seoul National University, Seoul, 152-742 Republic of Korea
| | - Chan Yeong Heo
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 152-742 Republic of Korea
- Department of Plastic and Reconstructive Surgery, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
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17
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Johansson P, Barkarmo S, Hawthan M, Peruzzi N, Kjellin P, Wennerberg A. Biomechanical, histological, and computed X-ray tomographic analyses of hydroxyapatite coated PEEK implants in an extended healing model in rabbit. J Biomed Mater Res A 2018; 106:1440-1447. [PMID: 29341426 DOI: 10.1002/jbm.a.36345] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 12/05/2017] [Accepted: 12/15/2017] [Indexed: 12/30/2022]
Abstract
A nanosized hydroxyapatite (HA) modification on polyetheretherketone (PEEK) using a novel spin coating technique was investigated in a rabbit model. Spin coating technique creates a 20-40 nm thick layer of nanosized HA particles with similar shape, size, and crystallinity as human bone. Some implants were designed with a perforating hole in the apical region to mimic a fusion chamber of a spinal implant. The coating nano-structures were assessed using a scanning electron microscope. The in vivo response to HA-PEEK was compared to untreated PEEK with respect to removal torque, histomorphometry, and computed microtomography. The HA-coated and pure PEEK implants were inserted in the tibia and femur bone according to simple randomization. The rabbits were sacrificed 20 weeks after implantation. Removal torque analysis showed significantly higher values for HA-PEEK. Qualitative histological evaluation revealed an intimate contact between PEEK and the bone at the threads and perforated hole. Histomorphometric assessment showed higher bone-implant and bone area values for HA-PEEK but without statistical significance. The effect of the HA coating showed most prominent effect in the removal torque which may be correlated to an alteration in the bone quality around the HA-PEEK implants. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 1440-1447, 2018.
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Affiliation(s)
- Pär Johansson
- Department of Prosthodontics Faculty of Odontology, Malmö University, Malmö, Sweden
| | - Sargon Barkarmo
- Department of Prosthodontics/Dental Materials Science, The Sahlgrenska Academy, Institute of Odontology, University of Gothenburg, Göteborg, Sweden
| | - Mohammed Hawthan
- Prosthodontic Department, Faculty of Dentistry, Umm Al-Qura University, Mecca, Saudi Arabia
| | - Niccolò Peruzzi
- Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Per Kjellin
- AstraZeneca Bioventure Hub, Promimic AB, Mölndal, Sweden
| | - Ann Wennerberg
- Department of Prosthodontics/Dental Materials Science, The Sahlgrenska Academy, Institute of Odontology, University of Gothenburg, Göteborg, Sweden
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18
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Abdallah MN, Badran Z, Ciobanu O, Hamdan N, Tamimi F. Strategies for Optimizing the Soft Tissue Seal around Osseointegrated Implants. Adv Healthc Mater 2017; 6. [PMID: 28960892 DOI: 10.1002/adhm.201700549] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 07/12/2017] [Indexed: 12/20/2022]
Abstract
Percutaneous and permucosal devices such as catheters, infusion pumps, orthopedic, and dental implants are commonly used in medical treatments. However, these useful devices breach the soft tissue barrier that protects the body from the outer environment, and thus increase bacterial infections resulting in morbidity and mortality. Such associated infections can be prevented if these devices are effectively integrated with the surrounding soft tissue, and thus creating a strong seal from the surrounding environment. However, so far, there are no percutaneous/permucosal medical devices able to prevent infection by achieving strong integration at the soft tissue-device interface. This review gives an insight into the current status of research into soft tissue-implant interface and the challenges associated with these interfaces. Biological soft/hard tissue interfaces may provide insights toward engineering better soft tissue interfaces around percutaneous devices. In this review, focus is put on the history and current findings as well as recent progress of the strategies aiming to develop a strong soft tissue seal around osseointegrated implants, such as orthopedic and dental implants.
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Affiliation(s)
- Mohamed-Nur Abdallah
- Division of Biomedical Sciences; Faculty of Dentistry; McGill University; Montreal H3A 1G1 QC Canada
- Division of Orthodontics; Faculty of Dentistry; Toronto University; Toronto M5G 1G6 ON Canada
| | - Zahi Badran
- Division of Biomedical Sciences; Faculty of Dentistry; McGill University; Montreal H3A 1G1 QC Canada
- Department of Periodontology (CHU/Rmes Inserm U1229/UIC11); Faculty of Dental Surgery; University of Nantes; Nantes 44042 France
| | - Ovidiu Ciobanu
- Division of Biomedical Sciences; Faculty of Dentistry; McGill University; Montreal H3A 1G1 QC Canada
| | - Nader Hamdan
- Department of Dental Clinical Sciences; Faculty of Dentistry; Dalhousie University; Halifax B3H 4R2 NS Canada
| | - Faleh Tamimi
- Division of Biomedical Sciences; Faculty of Dentistry; McGill University; Montreal H3A 1G1 QC Canada
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19
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Coelho PG, Zavanelli RA, Salles MB, Yeniyol S, Tovar N, Jimbo R. Enhanced Bone Bonding to Nanotextured Implant Surfaces at a Short Healing Period: A Biomechanical Tensile Testing in the Rat Femur. IMPLANT DENT 2017; 25:322-7. [PMID: 27213527 DOI: 10.1097/id.0000000000000436] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE To compare the bone bonding capabilities of 2 different surface treatments at an early healing period. Titanium alloy (Ti6Al4V) custom-made rectangular plates (1.4 × 2.4 × 4 mm) were either dual acid etched (Ti6Al4V-DAE) or DAE/nanotextured blasted (Ti6Al4V-NTB). MATERIALS AND METHODS Implants were placed in the distal femurs of 10 Wistar rats and were allowed to heal for 9 days. After euthanasia, the bone immediately proximal and distal to the implant was removed to test the bone bonding force with a universal testing machine. Ultrastructure of the bone/implant interface was assessed by scanning electron microscopy. RESULTS Ti6Al4V-NTB samples exhibited significantly greater bond strength than Ti6Al4V-DAE samples. Morphologically, the Ti6Al4V-NTB surfaces presented intimate interaction with bone, whereas little interaction between the Ti6Al4V-DAE surface and bone was observed. CONCLUSION The results of this study indicated a significant increase in bone bonding for the DAE/nanotextured blasted surface, which is suggested to be the outcome of the nanotexturing.
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Affiliation(s)
- Paulo G Coelho
- *Associate Professor, Biomaterials and Biomimetics and Director for Research, Department of Periodontology and Implant Dentistry, New York University College of Dentistry, NY. †Professor, Department of Prevention and Oral Rehabilitation, Federal University of Goias School of Dentistry, Goiania, GO, Brazil. ‡Researcher, Biomaterials and Biomimetics and Director for Research, Department of Periodontology and Implant Dentistry, New York University College of Dentistry, NY. §Professor, Department of Anatomy, University of Sao Paulo, Sao Paulo, Brazil. ¶Assistant Professor, Department of Oral Implantology, Faculty of Dentistry, Istanbul University, Istanbul, Turkey. ‖Researcher, Department of Biomaterials and Biomimetics, New York University College of Dentistry, NY. #Associate Professor, Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden
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20
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Civantos A, Martínez-Campos E, Ramos V, Elvira C, Gallardo A, Abarrategi A. Titanium Coatings and Surface Modifications: Toward Clinically Useful Bioactive Implants. ACS Biomater Sci Eng 2017; 3:1245-1261. [DOI: 10.1021/acsbiomaterials.6b00604] [Citation(s) in RCA: 182] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Ana Civantos
- Tissue
Engineering Group, Institute of Biofunctional Studies, Associated
Unit to the Institute of Polymer Science and Technology (CSIC), Pharmacy
Faculty, Complutense University of Madrid (UCM), Paseo Juan XXIII 1, 28040 Madrid, Spain
- Polymer
Functionalization Group, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Enrique Martínez-Campos
- Tissue
Engineering Group, Institute of Biofunctional Studies, Associated
Unit to the Institute of Polymer Science and Technology (CSIC), Pharmacy
Faculty, Complutense University of Madrid (UCM), Paseo Juan XXIII 1, 28040 Madrid, Spain
- Polymer
Functionalization Group, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Viviana Ramos
- Tissue
Engineering Group, Institute of Biofunctional Studies, Associated
Unit to the Institute of Polymer Science and Technology (CSIC), Pharmacy
Faculty, Complutense University of Madrid (UCM), Paseo Juan XXIII 1, 28040 Madrid, Spain
- Noricum S.L., San Sebastián
de los Reyes, Av. Fuente Nueva, 14, 28703 Madrid, Spain
| | - Carlos Elvira
- Polymer
Functionalization Group, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Alberto Gallardo
- Polymer
Functionalization Group, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Ander Abarrategi
- Haematopoietic
Stem Cell Laboratory, The Francis Crick Institute, 1 Midland
Road, NW1 1AT London, U.K
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21
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Profeta AC, Prucher GM. Bioactive-glass in periodontal surgery and implant dentistry. Dent Mater J 2017; 34:559-71. [PMID: 26438980 DOI: 10.4012/dmj.2014-233] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Bioactive-glass (B-G) is a material known for its favorable biological response when in contact with surrounding fibro-osseous tissues, due not only to an osteoconductive property, but also to an osteostimulatory capacity, and superior biocompatibility for use in human body. The objectives of this paper are to review recent studies on B-G in periodontal and implant therapy, describing its basic properties and mechanism of activity as well as discoursing about state of art and future perspective of utilization. From a demonstrated clinical benefit as bone graft for the elimination of osseous defects due to periodontal disease (intrabony/furcation defects) and surgeries (alveolar ridge preservation, maxillary sinus augmentation), to a potential use for manufacturing bioactive dental implants, possibly allowing wider case selection criteria together with improved integration rates even in the more challenging osteoporotic and medically compromised patients, this biomaterial represents an important field of study with high academic, clinical and industrial importance.
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Affiliation(s)
- Andrea Corrado Profeta
- Department of Restorative Dentistry, Biomaterials Science, Biomimetics and Biophotonics (B3) Research Group, King's College London Dental Institute
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22
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Kattimani VS, Kondaka S, Lingamaneni KP. Hydroxyapatite–-Past, Present, and Future in Bone Regeneration. ACTA ACUST UNITED AC 2016. [DOI: 10.4137/btri.s36138] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Hydroxyapatite (HA) is an essential element required for bone regeneration. Different forms of HA have been used for a long time. The essence of bone regeneration always revolves around the healthy underlying bone or it may be the surroundings that give enough strength. HA is well known for bone regeneration through conduction or by acting as a scaffold for filling of defects from ancient times, but emerging trends of osteoinductive property of HA are much promising for new bone regeneration. Emerging technology has made the dreams of clinicians to realize the use of HA in different forms for various regenerative purposes both in vivo and in vitro. The nanostructured calcium apatite plays an important role in the construction of calcified tissues. The nanostructured material has the ability to attach biological molecules such as proteins, which can be used as functional materials in many aspects, and the capability of synthesizing controlled structures of apatite to simulate the basic structure of bone and other calcified tissues. The process of regeneration requires a biomimetic and biocompatible nanostructured novel material. The nanostructured bioceramic particles are of interest in synthetic bone grafts and bone cements both injectable and controlled setting, so that such composites will reinforce the strength of bioceramics. Extensive research is being carried out for bone regeneration using nanotechnology. Artificial bone formation is not far from now. Nanotechnology has made many dreams come true. This paper gives comprehensive insights into the history and evolution with changing trends in the use of HA for various regenerative purposes.
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Affiliation(s)
| | - Sudheer Kondaka
- Department of Prosthodontics, Lenora Institute of Dental Sciences, Rajahmundry, Andhra Pradesh, India
| | - Krishna Prasad Lingamaneni
- Department of Oral and Maxillofacial Surgery, SIBAR Institute of Dental Sciences, Guntur, Andhra Pradesh, India
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Impact of Dental Implant Surface Modifications on Osseointegration. BIOMED RESEARCH INTERNATIONAL 2016; 2016:6285620. [PMID: 27478833 PMCID: PMC4958483 DOI: 10.1155/2016/6285620] [Citation(s) in RCA: 297] [Impact Index Per Article: 37.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 05/22/2016] [Accepted: 06/06/2016] [Indexed: 11/18/2022]
Abstract
Objective. The aim of this paper is to review different surface modifications of dental implants and their effect on osseointegration. Common marketed as well as experimental surface modifications are discussed. Discussion. The major challenge for contemporary dental implantologists is to provide oral rehabilitation to patients with healthy bone conditions asking for rapid loading protocols or to patients with quantitatively or qualitatively compromised bone. These charging conditions require advances in implant surface design. The elucidation of bone healing physiology has driven investigators to engineer implant surfaces that closely mimic natural bone characteristics. This paper provides a comprehensive overview of surface modifications that beneficially alter the topography, hydrophilicity, and outer coating of dental implants in order to enhance osseointegration in healthy as well as in compromised bone. In the first part, this paper discusses dental implants that have been successfully used for a number of years focusing on sandblasting, acid-etching, and hydrophilic surface textures. Hereafter, new techniques like Discrete Crystalline Deposition, laser ablation, and surface coatings with proteins, drugs, or growth factors are presented. Conclusion. Major advancements have been made in developing novel surfaces of dental implants. These innovations set the stage for rehabilitating patients with high success and predictable survival rates even in challenging conditions.
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Johansson P, Jimbo R, Naito Y, Kjellin P, Currie F, Wennerberg A. Polyether ether ketone implants achieve increased bone fusion when coated with nano-sized hydroxyapatite: a histomorphometric study in rabbit bone. Int J Nanomedicine 2016; 11:1435-42. [PMID: 27103801 PMCID: PMC4827897 DOI: 10.2147/ijn.s100424] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Polyether ether ketone (PEEK) possesses excellent mechanical properties similar to those of human bone and is considered the best alternative material other than titanium for orthopedic spine and trauma implants. However, the deficient osteogenic properties and the bioinertness of PEEK limit its fields of application. The aim of this study was to limit these drawbacks by coating the surface of PEEK with nano-scaled hydroxyapatite (HA) minerals. In the study, the biological response to PEEK, with and without HA coating, was investigated. Twenty-four screw-like and apically perforated implants in the rabbit femur were histologically evaluated at 3 weeks and 12 weeks after surgery. Twelve of the 24 implants were HA coated (test), and the remaining 12 served as uncoated PEEK controls. At 3 weeks and 12 weeks, the mean bone–implant contact was higher for test compared to control (P<0.05). The bone area inside the threads was comparable in the two groups, but the perforating hole showed more bone area for the HA-coated implants at both healing points (P<0.01). With these results, we conclude that nano-sized HA coating on PEEK implants significantly improved the osteogenic properties, and in a clinical situation this material composition may serve as an implant where a rapid bone fusion is essential.
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Affiliation(s)
- Pär Johansson
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden
| | - Ryo Jimbo
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden
| | - Yoshihito Naito
- Oral Implant Center, Tokushima University Hospital, Tokushima, Japan
| | | | | | - Ann Wennerberg
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden
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25
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Mistry S, Roy S, Jyoti Maitra N, Roy R, Datta S, Chanda A, Sarkar S. Safety and efficacy of additive and subtractive surface modification of Ti6Al4V endosseous implant in goat bone. J Mech Behav Biomed Mater 2015; 57:69-87. [PMID: 26705934 DOI: 10.1016/j.jmbbm.2015.11.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 11/22/2015] [Accepted: 11/25/2015] [Indexed: 01/17/2023]
Abstract
Growing interest of endosseous implant research is focused on surface modification to achieve early and strong osseointegration. The present study compared the behaviour of hydroxyapatite coated, zinc doped hydroxyapatite coated and hydrothermally treated titanium (Ti6Al4V) with machined Ti6Al4V implants (control) on osseointegration. The surface characterization and bacterial affinity test for implants were performed. Forty eight (48) cylinders (4 types in each animal) were placed in the humerus bone of 12 black Bengal goats. Bone-implant interface was examined with histological, radiological parameters and scanning electron microscopy on 42nd, 90th, and 180th day post-implantation. Surface roughness alterations of bone-detached implants with time were analyzed by non-contact profilometer. Push-out test (90th day) was performed to assess the strength of bony integration of implants. The coated implants revealed direct and early bone-implant contact but high bacterial affinity and coating resorption/cracks. Low bacterial affinity and strongest osseointegration was observed with hydrothermally treated implants. Poor bacterial affinity and delayed but strong fixation were evident with control implant. Based on the results of laboratory and animal experiments, we conclude that the hydrothermal modification of titanium implant is the more suitable way to achieve safe and effective osseointegration than the other three implant types for endosseous application.
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Affiliation(s)
- Surajit Mistry
- Department of Periodontics, Burdwan Dental College & Hospital, Powerhouse Para, West Bengal713101, India.
| | - Subhasis Roy
- ICAR-KVK, Ministry of Agriculture, Govt. of India, Nimpith, South 24-Parganas, West Bengal 743338, India
| | - Nilendu Jyoti Maitra
- ICAR-KVK, Ministry of Agriculture, Govt. of India, Nimpith, South 24-Parganas, West Bengal 743338, India
| | - Rajiv Roy
- Department of Orthopaedics, Calcutta National Medical College & Hospital, Kolkata, West Bengal 700014, India
| | - Someswar Datta
- Bioceramic and Coating Division, CSIR-Central Glass & Ceramic Research Institute, Govt. of India, Kolkata, West Bengal 700032, India
| | - Abhijit Chanda
- School of Bio-Science & Engineering, Jadavpur University, Kolkata, West Bengal 700032, India
| | - Soumya Sarkar
- N.O.C.C. Division, Central Glass & Ceramic Research Institute, Kolkata 700032, India
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Moura CEB, Silva NB, Sa JC, Cavalcanti GB, de Medeiros SRB, Rocha HAO, Papa PC, Alves C. MC3T3-E1 Cells Behavior on Surfaces Bombarded by Argon Ions in Planar Cathode Discharge. Artif Organs 2015; 40:497-504. [DOI: 10.1111/aor.12597] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
| | | | - Juliana Carvalho Sa
- Department of Mechanical Engineering; Federal University of Rio Grande do Norte; Natal RN Brazil
| | - Geraldo Barroso Cavalcanti
- Department of Clinical and Toxicological Analysis; Federal University of Rio Grande do Norte; Natal RN Brazil
| | | | | | | | - Clodomiro Alves
- Department of Mechanical Engineering; Federal University of Rio Grande do Norte; Natal RN Brazil
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27
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Implant surface characteristics and their effect on osseointegration. Br Dent J 2015; 218:E9. [DOI: 10.1038/sj.bdj.2015.171] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/12/2015] [Indexed: 11/08/2022]
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29
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Zhang X, Xiao GY, Zhao XC, He K, Xu WH, Lu YP. Rapid early formation and crystal refinement of chemical conversion hopeite coatings induced by substrate sandblasting. NEW J CHEM 2015. [DOI: 10.1039/c5nj01386k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A relatively uniform banded structure is exhibited on the crystal surface of a coating on sandblasted substrates.
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Affiliation(s)
- Xian Zhang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
- Ministry of Education
- Shandong University
- Jinan
- China
| | - Gui-yong Xiao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
- Ministry of Education
- Shandong University
- Jinan
- China
| | - Xing-chuan Zhao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
- Ministry of Education
- Shandong University
- Jinan
- China
| | - Kun He
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
- Ministry of Education
- Shandong University
- Jinan
- China
| | - Wen-hua Xu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
- Ministry of Education
- Shandong University
- Jinan
- China
| | - Yu-peng Lu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
- Ministry of Education
- Shandong University
- Jinan
- China
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Osseointegration: hierarchical designing encompassing the macrometer, micrometer, and nanometer length scales. Dent Mater 2014; 31:37-52. [PMID: 25467952 DOI: 10.1016/j.dental.2014.10.007] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 09/14/2014] [Accepted: 10/31/2014] [Indexed: 01/14/2023]
Abstract
OBJECTIVE Osseointegration has been a proven concept in implant dentistry and orthopedics for decades. Substantial efforts for engineering implants for reduced treatment time frames have focused on micrometer and most recently on nanometer length scale alterations with negligible attention devoted to the effect of both macrometer design alterations and surgical instrumentation on osseointegration. This manuscript revisits osseointegration addressing the individual and combined role of alterations on the macrometer, micrometer, and nanometer length scales on the basis of cell culture, preclinical in vivo studies, and clinical evidence. METHODS A critical appraisal of the literature was performed regarding the impact of dental implant designing on osseointegration. Results from studies with different methodological approaches and the commonly observed inconsistencies are discussed. RESULTS It is a consensus that implant surface topographical and chemical alterations can hasten osseointegration. However, the tailored combination between multiple length scale design parameters that provides maximal host response is yet to be determined. SIGNIFICANCE In spite of the overabundant literature on osseointegration, a proportional inconsistency in findings hitherto encountered warrants a call for appropriate multivariable study designing to ensure that adequate data collection will enable osseointegration maximization and/or optimization, which will possibly lead to the engineering of endosteal implant designs that can be immediately placed/loaded regardless of patient dependent conditions.
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31
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Mustafa A, Lung CYK, Mustafa NS, Mustafa BA, Kashmoola MA, Zwahlen RA, Matinlinna JP. EPA-coated titanium implants promote osteoconduction in white New Zealand rabbits. Clin Oral Implants Res 2014; 27:303-9. [PMID: 25393376 DOI: 10.1111/clr.12525] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/10/2014] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To investigate the effect of eicosapentaenoic acid (EPA)-coated Ti implants on osteoconduction in white New Zealand rabbit mandibles. MATERIAL AND METHODS Sandblasted and cleansed planar titanium specimens with a size of 5 × 5 × 1 mm were coated on one side with 0.25 vol% eicosapentaenoic acid (EPA). The other side of the specimens was kept highly polished (the control side). These specimens were inserted in rabbit mandibles. Twelve rabbits were randomly assigned into three study groups (n = 4). The rabbits were sacrificed at 4, 8, and 12 weeks. The harvested specimens with the implants were assessed for new bone formation on both sides of the implant using CBCT, conventional radiographs, and the biaxial pullout test. The results were statistically analyzed by a nonparametric Kruskal-Wallis test and Friedman's test as multiple comparisons and by Brunner-Langer nonparametric mixed model approach (R Software). RESULTS A significant osteoconductive bone formation was found on the EPA-coated Ti implant surface (P < 0.05) at 8 weeks when compared to the polished surface (control). Biaxial pullout test results showed a significant difference (P < 0.05) after 8 and 12 weeks with a maximum force of 243.8 N, compared to 143.25 N after 4 week. CONCLUSION EPA implant coating promoted osteoconduction on the Ti implant surfaces, enhancing the anchorage of the implant to the surrounding bone in white New Zealand rabbits.
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Affiliation(s)
- Ammar Mustafa
- Dental Materials Science, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.,Dental Materials Science, Kulliyyah of Dentistry, International Islamic University Malaysia, Kuantan, Malaysia.,ISF Medical Unit, Doha, Qatar
| | - Christie Y K Lung
- Dental Materials Science, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.,Dental Materials Science, Kulliyyah of Dentistry, International Islamic University Malaysia, Kuantan, Malaysia
| | - Nazih S Mustafa
- Kulliyyah of Dentistry, International Islamic University Malaysia, Kuantan, Malaysia
| | - Besma A Mustafa
- Kulliyyah of Dentistry, International Islamic University Malaysia, Kuantan, Malaysia
| | - Muhannad A Kashmoola
- Kulliyyah of Dentistry, International Islamic University Malaysia, Kuantan, Malaysia
| | - Roger A Zwahlen
- Oral and Maxillo-Facial Surgery, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
| | - Jukka P Matinlinna
- Dental Materials Science, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.,Dental Materials Science, Kulliyyah of Dentistry, International Islamic University Malaysia, Kuantan, Malaysia
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Johansson P, Jimbo R, Kjellin P, Currie F, Chrcanovic BR, Wennerberg A. Biomechanical evaluation and surface characterization of a nano-modified surface on PEEK implants: a study in the rabbit tibia. Int J Nanomedicine 2014; 9:3903-11. [PMID: 25152620 PMCID: PMC4140704 DOI: 10.2147/ijn.s60387] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Polyether ether ketone (PEEK) is today frequently used as a biomaterial in different medical operations due to its excellent mechanical and chemical properties. However, the untreated surface of PEEK is bioinert and hydrophobic, and it does not osseointegrate in its pure form. The aim of this study was to evaluate a unique nano-modified surface of PEEK with respect to osseointegration. Forty-eight threaded, non-cutting PEEK implants were inserted bilaterally in the tibia of 24 rabbits. Half of the implants (n=24) were coated with nanocrystalline hydroxyapatite (test) and the remaining implants (n=24) were left uncoated (control). Half of the animals (n=12) were euthanized after 3 weeks of healing and the remaining (n=12) after 12 weeks. The implant retention was measured with a removal torque apparatus. Surface analysis was performed with interferometry, scanning electron microscopy, and X-ray photon spectroscopy to relate the removal torque to the applied surface. The test implants revealed a significantly higher retention after 3 weeks (P=0.05) and 12 weeks (P=0.028) compared to controls. The result of the present study proves that the addition of nanocrystalline hydroxyapatite coating to PEEK surfaces significantly increases its removal torque and biocompatibility.
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Affiliation(s)
- Pär Johansson
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden
| | - Ryo Jimbo
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden
| | | | | | | | - Ann Wennerberg
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden
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Coelho PG, Takayama T, Yoo D, Jimbo R, Karunagaran S, Tovar N, Janal MN, Yamano S. Nanometer-scale features on micrometer-scale surface texturing: a bone histological, gene expression, and nanomechanical study. Bone 2014; 65:25-32. [PMID: 24813260 DOI: 10.1016/j.bone.2014.05.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 04/18/2014] [Accepted: 05/05/2014] [Indexed: 11/29/2022]
Abstract
Micro- and nanoscale surface modifications have been the focus of multiple studies in the pursuit of accelerating bone apposition or osseointegration at the implant surface. Here, we evaluated histological and nanomechanical properties, and gene expression, for a microblasted surface presenting nanometer-scale texture within a micrometer-scale texture (MB) (Ossean Surface, Intra-Lock International, Boca Raton, FL) versus a dual-acid etched surface presenting texture at the micrometer-scale only (AA), in a rodent femur model for 1, 2, 4, and 8weeks in vivo. Following animal sacrifice, samples were evaluated in terms of histomorphometry, biomechanical properties through nanoindentation, and gene expression by real-time quantitative reverse transcription polymerase chain reaction analysis. Although the histomorphometric, and gene expression analysis results were not significantly different between MB and AA at 4 and 8 weeks, significant differences were seen at 1 and 2 weeks. The expression of the genes encoding collagen type I (COL-1), and osteopontin (OPN) was significantly higher for MB than for AA at 1 week, indicating up-regulated osteoprogenitor and osteoblast differentiation. At 2 weeks, significantly up-regulated expression of the genes for COL-1, runt-related transcription factor 2 (RUNX-2), osterix, and osteocalcin (OCN) indicated progressive mineralization in newly formed bone. The nanomechanical properties tested by the nanoindentation presented significantly higher-rank hardness and elastic modulus for the MB compared to AA at all time points tested. In conclusion, the nanotopographical featured surfaces presented an overall higher host-to-implant response compared to the microtextured only surfaces. The statistical differences observed in some of the osteogenic gene expression between the two groups may shed some insight into the role of surface texture and its extent in the observed bone healing mechanisms.
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Affiliation(s)
- Paulo G Coelho
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, NY, USA
| | - Tadahiro Takayama
- Department of Prosthodontics, New York University College of Dentistry, New York, NY, USA
| | - Daniel Yoo
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, NY, USA
| | - Ryo Jimbo
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden.
| | - Sanjay Karunagaran
- Department of Prosthodontics, University of Tennessee Health Science Center, College of Dentistry, Memphis, TN, USA
| | - Nick Tovar
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, NY, USA
| | - Malvin N Janal
- Department of Epidemiology and Health Promotion, New York University, New York, NY, USA
| | - Seiichi Yamano
- Department of Prosthodontics, New York University College of Dentistry, New York, NY, USA
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Barkarmo S, Andersson M, Currie F, Kjellin P, Jimbo R, Johansson CB, Stenport V. Enhanced bone healing around nanohydroxyapatite-coated polyetheretherketone implants: An experimental study in rabbit bone. J Biomater Appl 2014; 29:737-47. [DOI: 10.1177/0885328214542854] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objective To investigate the bone response to threaded polyetheretherketone (PEEK) implants coated with nanohydroxyapatite. Materials and methods A total of 39 PEEK implants were coated with nanocrystalline hydroxyapatite and 39 uncoated implants were used as controls. The implant surface was characterized by optical interferometry and scanning electron microscope. The implants were inserted in the tibia and femur of 13 rabbits. After 6 weeks of healing, quantitative and qualitative analyses were performed. Results The test implants showed significantly higher removal torque test values compared with the control group. Histomorphometric evaluation demonstrated higher bone-to-implant contact for the test implants; however, there were no differences in bone area between the groups. Qualitative histological analyses demonstrated inflammatory cellular reactions in close vicinity of both implant surfaces. A two-cell layer of foreign body giant cells was observed irrespective of sample type. Conclusion Our findings demonstrate that implants with a threaded design render good stability to PEEK in both coated and uncoated implants. Nanohydroxyapatite-coated PEEK implants demonstrated improved bone formation compared with uncoated controls.
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Affiliation(s)
- S Barkarmo
- Department of Prosthodontics, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - M Andersson
- Department of Chemical and Biological Engineering, Applied Surface Chemistry, Chalmers University of Technology, Gothenburg, Sweden
| | - F Currie
- Promimic AB, Stena Center 1B, Gothenburg, Sweden
| | - P Kjellin
- Promimic AB, Stena Center 1B, Gothenburg, Sweden
| | - R Jimbo
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden
| | - CB Johansson
- Department of Prosthodontics, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - V Stenport
- Department of Prosthodontics, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Souza FÁ, Queiroz TP, Sonoda CK, Okamoto R, Margonar R, Guastaldi AC, Nishioka RS, Garcia Júnior IR. Histometric analysis and topographic characterization ofcp Tiimplants with surfaces modified by laser with and without silica deposition. J Biomed Mater Res B Appl Biomater 2014; 102:1677-88. [DOI: 10.1002/jbm.b.33139] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Revised: 02/06/2014] [Accepted: 03/06/2014] [Indexed: 12/14/2022]
Affiliation(s)
- Francisley Á. Souza
- Department of Surgery and General Clinic; Araçatuba of Dental School, Univ Estadual Paulista Júlio de Mesquita Filho - UNESP; Araçatuba Brazil
| | - Thallita P. Queiroz
- Department of Surgery and General Clinic; Araçatuba of Dental School, Univ Estadual Paulista Júlio de Mesquita Filho - UNESP; Araçatuba Brazil
| | - Celso K. Sonoda
- Department of Surgery and General Clinic; Araçatuba of Dental School, Univ Estadual Paulista Júlio de Mesquita Filho - UNESP; Araçatuba Brazil
| | - Roberta Okamoto
- Department of Surgery and General Clinic; Araçatuba of Dental School, Univ Estadual Paulista Júlio de Mesquita Filho - UNESP; Araçatuba Brazil
| | - Rogério Margonar
- Department of Health Sciense; University Center of Araraquara - UNIARA; Araraquara Brazil
| | - Antônio C. Guastaldi
- Department of Physical Chemistry, Biomaterials Group; Institute of Chemistry, Univ Estadual Paulista Júlio de Mesquita Filho - UNESP; Araraquara Brazil
| | - Renato S. Nishioka
- Department of Dental Materials and Prothesis; São José dos Campos of Dental School, Univ Estadual Paulista Júlio de Mesquita Filho - UNESP; São José dos Campos Brazil
| | - Idelmo R. Garcia Júnior
- Department of Surgery and General Clinic; Araçatuba of Dental School, Univ Estadual Paulista Júlio de Mesquita Filho - UNESP; Araçatuba Brazil
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Chrcanovic BR, Albrektsson T, Wennerberg A. Reasons for failures of oral implants. J Oral Rehabil 2014; 41:443-76. [PMID: 24612346 DOI: 10.1111/joor.12157] [Citation(s) in RCA: 239] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2014] [Indexed: 12/18/2022]
Abstract
This study reviews the literature regarding the factors contributing to failures of dental implants. An electronic search was undertaken including papers from 2004 onwards. The titles and abstracts from these results were read to identify studies within the selection criteria. All reference lists of the selected studies were then hand-searched, this time without time restrictions. A narrative review discussed some findings from the first two parts where separate data from non-comparative studies may have indicated conclusions different from those possible to draw in the systematic analysis. It may be suggested that the following situations are correlated to increase the implant failure rate: a low insertion torque of implants that are planned to be immediately or early loaded, inexperienced surgeons inserting the implants, implant insertion in the maxilla, implant insertion in the posterior region of the jaws, implants in heavy smokers, implant insertion in bone qualities type III and IV, implant insertion in places with small bone volumes, use of shorter length implants, greater number of implants placed per patient, lack of initial implant stability, use of cylindrical (non-threaded) implants and prosthetic rehabilitation with implant-supported overdentures. Moreover, it may be suggested that the following situations may be correlated with an increase in the implant failure rate: use of the non-submerged technique, immediate loading, implant insertion in fresh extraction sockets, smaller diameter implants. Some recently published studies suggest that modern, moderately rough implants may present with similar results irrespective if placed in maxillas, in smoking patients or using only short implants.
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Affiliation(s)
- B R Chrcanovic
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden
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Evaluation of bone healing on sandblasted and Acid etched implants coated with nanocrystalline hydroxyapatite: an in vivo study in rabbit femur. Int J Dent 2014; 2014:197581. [PMID: 24723952 PMCID: PMC3958713 DOI: 10.1155/2014/197581] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 09/24/2013] [Accepted: 10/17/2013] [Indexed: 11/18/2022] Open
Abstract
This study aimed at investigating if a coating of hydroxyapatite nanocrystals would enhance bone healing over time in trabecular bone. Sandblasted and acid etched titanium implants with and without a submicron thick coat of hydroxyapatite nanocrystals (nano-HA) were implanted in rabbit femur with healing times of 2, 4, and 9 weeks. Removal torque analyses and histological evaluations were performed. The torque analysis did not show any significant differences between the implants at any healing time. The control implant showed a tendency of more newly formed bone after 4 weeks of healing and significantly higher bone area values after 9 weeks of healing. According to the results from this present study, both control and nano-HA surfaces were biocompatible and osteoconductive. A submicron thick coating of hydroxyapatite nanocrystals deposited onto blasted and acid etched screw shaped titanium implants did not enhance bone healing, as compared to blasted and etched control implants when placed in trabecular bone.
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Suska F, Omar O, Emanuelsson L, Taylor M, Gruner P, Kinbrum A, Hunt D, Hunt T, Taylor A, Palmquist A. Enhancement of CRF-PEEK osseointegration by plasma-sprayed hydroxyapatite: A rabbit model. J Biomater Appl 2014; 29:234-242. [PMID: 24496230 DOI: 10.1177/0885328214521669] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Carbon-fibre-reinforced polyether ether ketone (CFR-PEEK) exhibits excellent biomechanical properties as it has an elastic modulus similar to bone. However, CFR-PEEK displays inferior biocompatibility compared with titanium alloy and coating techniques are therefore of interest in order to improve integration. In this paper, the early biological response to CFR-PEEK implants, with and without hydroxyapatite coating, was investigated. Furthermore, a hydroxyapatite-coated titanium alloy reference served as a clinically relevant control. The study was conducted in a rabbit model, both in femur trabecular bone as well as in tibia cortical bone. The results demonstrated that an hydroxyapatite coating significantly enhances the bone response to PEEK implants in vivo. Moreover, in cortical bone, hydroxyapatite-coated PEEK implants induced superior bone response compared with hydroxyapatite-coated Ti ones. These results suggest that hydroxyapatite-coated CFR-PEEK is a suitable material for in vivo implantation.
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Affiliation(s)
- Felicia Suska
- Department of Biomaterials, Sahlgrenska Academy at the University of Gothenburg, Göteborg, Sweden BIOMATCELL Vinn Excellence Center of Biomaterials and Cell Therapy, Göteborg, Sweden
| | - Omar Omar
- Department of Biomaterials, Sahlgrenska Academy at the University of Gothenburg, Göteborg, Sweden BIOMATCELL Vinn Excellence Center of Biomaterials and Cell Therapy, Göteborg, Sweden
| | - Lena Emanuelsson
- Department of Biomaterials, Sahlgrenska Academy at the University of Gothenburg, Göteborg, Sweden BIOMATCELL Vinn Excellence Center of Biomaterials and Cell Therapy, Göteborg, Sweden
| | - Mark Taylor
- Department of Orthopaedics and Motions Systems, Fraunhofer Institute for Production Technology and Automation IPA, Leicestershire, UK
| | | | | | - Duncan Hunt
- Hunt Developments (UK) Limited, Midhurst, UK
| | - Trevor Hunt
- Hunt Developments (UK) Limited, Midhurst, UK
| | | | - Anders Palmquist
- Department of Biomaterials, Sahlgrenska Academy at the University of Gothenburg, Göteborg, Sweden BIOMATCELL Vinn Excellence Center of Biomaterials and Cell Therapy, Göteborg, Sweden
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Hwang JW, Lee EU, Lee JS, Jung UW, Lee IS, Choi SH. Dissolution behavior and early bone apposition of calcium phosphate-coated machined implants. J Periodontal Implant Sci 2013; 43:291-300. [PMID: 24455442 PMCID: PMC3891861 DOI: 10.5051/jpis.2013.43.6.291] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 10/09/2013] [Indexed: 11/18/2022] Open
Abstract
Purpose Calcium phosphate (CaP)-coated implants promote osseointegration and survival rate. The aim of this study was to (1) analyze the dissolution behavior of the residual CaP particles of removed implants and (2) evaluate bone apposition of CaP-coated machined surface implants at the early healing phase. Methods Mandibular premolars were extracted from five dogs. After eight weeks, the implants were placed according to drilling protocols: a nonmobile implant (NI) group and rotational implant (RI) group. For CaP dissolution behavior analysis, 8 implants were removed after 0, 1, 2, and 4 weeks. The surface morphology and deposition of the coatings were observed. For bone apposition analysis, block sections were obtained after 1-, 2-, and 4-week healing periods and the specimens were analyzed. Results Calcium and phosphorus were detected in the implants that were removed immediately after insertion, and the other implants were composed mainly of titanium. There were no notable differences between the NI and RI groups in terms of the healing process. The bone-to-implant contact and bone density in the RI group showed a remarkable increase after 2 weeks of healing. Conclusions It can be speculated that the CaP coating dissolves early in the healing phase and chemically induces early bone formation regardless of the primary stability.
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Affiliation(s)
- Ji-Wan Hwang
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Eun-Ung Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Jung-Seok Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Ui-Won Jung
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - In-Seop Lee
- Institute of Physics & Applied Physics, Atomic-Scale Surface Science Research Center, Yonsei University, Seoul, Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
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Moura CCG, Machado JR, Silva MV, Rodrigues DBR, Zanetta-Barbosa D, Jimbo R, Tovar N, Coelho PG. Evaluation of human polymorphonuclear behavior on textured titanium and calcium-phosphate coated surfaces. Biomed Mater 2013; 8:035010. [DOI: 10.1088/1748-6041/8/3/035010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Plasma treatment maintains surface energy of the implant surface and enhances osseointegration. Int J Biomater 2013; 2013:354125. [PMID: 23365578 PMCID: PMC3556447 DOI: 10.1155/2013/354125] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Accepted: 11/25/2012] [Indexed: 11/22/2022] Open
Abstract
The surface energy of the implant surface has an impact on osseointegration. In this study, 2 surfaces: nonwashed resorbable blasting media (NWRBM; control) and Ar-based nonthermal plasma 30 days (Plasma 30 days; experimental), were investigated with a focus on the surface energy. The surface energy was characterized by the Owens-Wendt-Rabel-Kaelble method and the chemistry by X-ray photoelectron spectroscopy (XPS). Five adult beagle dogs received 8 implants (n = 2 per surface, per tibia). After 2 weeks, the animals were euthanized, and half of the implants (n = 20) were removal torqued and the other half were histologically processed (n = 20). The bone-to-implant contact (BIC) and bone area fraction occupancy (BAFO) were evaluated on the histologic sections. The XPS analysis showed peaks of C, Ca, O, and P for the control and experimental surfaces. While no significant difference was observed for BIC parameter (P > 0.75), a higher level for torque (P < 0.02) and BAFO parameter (P < 0.01) was observed for the experimental group. The surface elemental chemistry was modified by the plasma and lasted for 30 days after treatment resulting in improved biomechanical fixation and bone formation at 2 weeks compared to the control group.
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An SH, Matsumoto T, Sasaki JI, Miyajima H, Narayanan R, Imazato S, Kim KH. In vitro bioactivity evaluation of nano- and micro-crystalline anodic TiO2: HA formation, cellular affinity and organ culture. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012. [DOI: 10.1016/j.msec.2012.07.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Qian J, Wennerberg A, Albrektsson T. Reasons for Marginal Bone Loss around Oral Implants. Clin Implant Dent Relat Res 2012. [DOI: 10.1111/cid.12014] [Citation(s) in RCA: 154] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Jimbo R, Coelho P, Bryington M, Baldassarri M, Tovar N, Currie F, Hayashi M, Janal M, Andersson M, Ono D, Vandeweghe S, Wennerberg A. Nano Hydroxyapatite-coated Implants Improve Bone Nanomechanical Properties. J Dent Res 2012; 91:1172-7. [DOI: 10.1177/0022034512463240] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Nanostructure modification of dental implants has long been sought as a means to improve osseointegration through enhanced biomimicry of host structures. Several methods have been proposed and demonstrated for creating nanotopographic features; here we describe a nanoscale hydroxyapatite (HA)-coated implant surface and hypothesize that it will hasten osseointegration and improve its quality relative to that of non-coated implants. Twenty threaded titanium alloy implants, half prepared with a stable HA nanoparticle surface and half grit-blasted, acid-etched, and heat-treated (HT), were inserted into rabbit femurs. Pre-operatively, the implants were morphologically and topographically characterized. After 3 weeks of healing, the samples were retrieved for histomorphometry. The nanomechanical properties of the surrounding bone were evaluated by nanoindentation. While both implants revealed similar bone-to-implant contact, the nanoindentation demonstrated that the tissue quality was significantly enhanced around the HA-coated implants, validating the postulated hypothesis.
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Affiliation(s)
- R. Jimbo
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Sweden
| | - P.G. Coelho
- Department of Biomaterials and Biomimetics, New York University, New York, USA
| | - M. Bryington
- Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, Ohio, USA
| | - M. Baldassarri
- Department of Biomaterials and Biomimetics, New York University, New York, USA
| | - N. Tovar
- Department of Biomaterials and Biomimetics, New York University, New York, USA
| | | | - M. Hayashi
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Sweden
| | - M.N. Janal
- Department of Epidemiology and Health Promotion, New York University College of Dentistry, New York, USA
| | - M. Andersson
- Department of Chemical and Biological Engineering, Applied Surface Chemistry, Chalmers University of Technology, Gothenburg, Sweden
| | - D. Ono
- Division of Applied Prosthodontics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S. Vandeweghe
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Sweden
- Department of Periodontology and Oral Implantology, Dental School, Faculty of Medicine and Health Sciences, University of Ghent, Belgium
| | - A. Wennerberg
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Sweden
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Abstract
OBJECTIVE To report on the long-term survival and prosthodontic maintenance of two edentulous adults with mandibular overdentures supported by hydroxyapatite (HA)-coated implants. BACKGROUND Mandibular implant overdentures are a successful treatment option with positive impact on the quality of life of elderly edentulous adults. Long-term survival of the implants requires continued rigorous prosthodontic maintenance. CLINICAL REPORT Two elderly edentulous adults with mandibular overdentures supported by 2 HA-coated implants were presented for prosthodontic rehabilitation after 22 years of placement. The implants were osseo-integrated and surviving at presentation based on accepted criteria. The mandibular implant overdentures suffered recurrent loss of retention and stability. Prosthodontic treatment involving the replacement of defective attachment systems and construction of new sets of mandibular implant overdentures opposing complete maxillary dentures is presented. CONCLUSION The long-term survival of mandibular 2-implant overdentures requires continued prosthodontic maintenance. A conservative approach in the rehabilitation of two older edentulous adults with mandibular 2-implant overdentures was described including proper selection of attachment systems.
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Affiliation(s)
- Nabeel H M Alsabeeha
- Sir John Walsh Research Institute, School of Dentistry, University of Otago, Dunedin, New Zealand Ras Al Khaimah Dental Center, Ministry of Health, United Arab Emirates.
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Haenle M, Lindner T, Ellenrieder M, Willfahrt M, Schell H, Mittelmeier W, Bader R. Bony integration of titanium implants with a novel bioactive calcium titanate (Ca4Ti3O10) surface treatment in a rabbit model. J Biomed Mater Res A 2012; 100:2710-6. [DOI: 10.1002/jbm.a.34186] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 03/03/2012] [Accepted: 03/12/2012] [Indexed: 11/09/2022]
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Lee SY, Yang DJ, Yeo S, An HW, Ryoo KH, Park KB. The cytocompatibility and osseointegration of the Ti implants with XPEED® surfaces. Clin Oral Implants Res 2011; 23:1283-9. [PMID: 22093072 DOI: 10.1111/j.1600-0501.2011.02304.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2011] [Indexed: 11/28/2022]
Abstract
OBJECTIVES This study evaluated cytocompatibility and osseointegration of the titanium (Ti) implants with resorbable blast media (RBM) surfaces produced by grit-blasting or XPEED(®) surfaces by coating of the nanostructured calcium. MATERIAL AND METHODS Ti implants with XPEED(®) surfaces were hydrothermally prepared from Ti implants with RBM surfaces in a solution containing alkaline calcium. The surface characteristics were evaluated by using a scanning electron microscope (SEM) and surface roughness measuring system. Apatite formation was measured with SEM after immersion in modified-simulated body fluid and the amount of calcium released was measured by inductively coupled plasma optical emission. The cell proliferation was investigated by MTT assay and the cell attachment was evaluated by SEM in MC3T3-E1 pre-osteoblast cells. Thirty implants with RBM surfaces and 30 implants with XPEED(®) surfaces were placed in the proximal tibiae and in the femoral condyles of 10 New Zealand White rabbits. The osseointegration was evaluated by a removal torque test in the proximal tibiae and by histomorphometric analysis in the femoral condyles 4 weeks after implantation. RESULTS The Ti implants with XPEED(®) surfaces showed a similar surface morphology and surface roughness to those of the Ti implants with RBM surfaces. The amount of calcium ions released from the surface of the Ti implants with XPEED(®) surfaces was much more than the Ti implants with RBM surfaces (P < 0.05). The cell proliferation and cell attachment of the Ti implants showed a similar pattern to those of the Ti implants with RBM surfaces (P > 0.1). Apatite deposition significantly increased in all surfaces of the Ti implants with XPEED(®) surfaces. The removable torque value (P = 0.038) and percentage of bone-to-implant contact (BIC%) (P = 0.03) was enhanced in the Ti implants with XPEED(®) surfaces. CONCLUSION The Ti implants with XPEED(®) surfaces significantly enhanced apatite formation, removal torque value, and the BIC%. The Ti implants with XPEED(®) surfaces may induce strong bone integration by improving osseointegration of grit-blasted Ti implants in areas of poor quality bone.
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Affiliation(s)
- Sun-Young Lee
- Department of Biobusiness, Megagen Implant, Gyeongsan si, Gyeongsangbuk-do, South Korea
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Liu Y, Jiang T, Zhou Y, Zhang Z, Wang Z, Tong H, Shen X, Wang Y. Evaluation of the attachment, proliferation, and differentiation of osteoblast on a calcium carbonate coating on titanium surface. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2011.03.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kang BS, Sul YT, Jeong Y, Byon E, Kim JK, Cho S, Oh SJ, Albrektsson T. Metal plasma immersion ion implantation and deposition (MePIIID) on screw-shaped titanium implant: The effects of ion source, ion dose and acceleration voltage on surface chemistry and morphology. Med Eng Phys 2011; 33:730-8. [PMID: 21334957 DOI: 10.1016/j.medengphy.2011.01.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2010] [Revised: 12/31/2010] [Accepted: 01/21/2011] [Indexed: 10/18/2022]
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Yin K, Wang Z, Fan X, Bian Y, Guo J, Lan J. The experimental research on two-generation BLB dental implants - Part I: surface modification and osseointegration. Clin Oral Implants Res 2011; 23:846-52. [DOI: 10.1111/j.1600-0501.2011.02209.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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