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Riedel R, Pérez-Amodio S, Cabo-Zabala L, Velasco-Ortega E, Maymó J, Gil J, Monsalve-Guil L, Ortiz-Garcia I, Pérez-Pérez A, Sánchez-Margalet V, Jiménez-Guerra A. Influence of the Surface Topography of Titanium Dental Implants on the Behavior of Human Amniotic Stem Cells. Int J Mol Sci 2024; 25:7416. [PMID: 39000523 PMCID: PMC11242699 DOI: 10.3390/ijms25137416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2024] [Revised: 07/02/2024] [Accepted: 07/04/2024] [Indexed: 07/16/2024] Open
Abstract
The dental implant surface plays a crucial role in osseointegration. The topography and physicochemical properties will affect the cellular functions. In this research, four distinct titanium surfaces have been studied: machined acting (MACH), acid etched (AE), grit blasting (GBLAST), and a combination of grit blasting and subsequent acid etching (GBLAST + AE). Human amniotic mesenchymal (hAMSCs) and epithelial stem cells (hAECs) isolated from the amniotic membrane have attractive stem-cell properties. They were cultured on titanium surfaces to analyze their impact on biological behavior. The surface roughness, microhardness, wettability, and surface energy were analyzed using interferometric microscopy, Vickers indentation, and drop-sessile techniques. The GBLAST and GBLAST + AE surfaces showed higher roughness, reduced hydrophilicity, and lower surface energy with significant differences. Increased microhardness values for GBLAST and GBLAST + AE implants were attributed to surface compression. Cell viability was higher for hAMSCs, particularly on GBLAST and GBLAST + AE surfaces. Alkaline phosphatase activity enhanced in hAMSCs cultured on GBLAST and GBLAST + AE surfaces, while hAECs showed no mineralization signals. Osteogenic gene expression was upregulated in hAMSCs on GBLAST surfaces. Moreover, α2 and β1 integrin expression enhanced in hAMSCs, suggesting a surface-integrin interaction. Consequently, hAMSCs would tend toward osteoblastic differentiation on grit-blasted surfaces conducive to osseointegration, a phenomenon not observed in hAECs.
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Affiliation(s)
- Rodrigo Riedel
- Departament Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón 2, 4° Piso, Buenos Aires 1428, Argentina; (R.R.); (J.M.)
- CONICET, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Universidad de Buenos Aires, Ciudad Universitaria Pabellón 2, 4th Floor, Buenos Aires 1428, Argentina
| | - Soledad Pérez-Amodio
- Bioengineering Institute of Technology, Facultad de Medicina y Ciencias de la Salud, Universidad Internacional de Cataluña, 08195 Sant Cugat del Vallés, Spain;
| | - Laura Cabo-Zabala
- Sección de Inmunología, Hospital Regional Universitario de Malaga, Instituto de Investigacion Biomédica de Malaga (IBIMA), 29590 Málaga, Spain;
| | - Eugenio Velasco-Ortega
- Department of Stomatology, Faculty of Dentistry, University of Seville, 41004 Sevilla, Spain; (E.V.-O.); (I.O.-G.); (A.J.-G.)
| | - Julieta Maymó
- Departament Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón 2, 4° Piso, Buenos Aires 1428, Argentina; (R.R.); (J.M.)
- CONICET, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Universidad de Buenos Aires, Ciudad Universitaria Pabellón 2, 4th Floor, Buenos Aires 1428, Argentina
| | - Javier Gil
- Bioengineering Institute of Technology, Facultad de Medicina y Ciencias de la Salud, Universidad Internacional de Cataluña, 08195 Sant Cugat del Vallés, Spain;
| | - Loreto Monsalve-Guil
- Department of Stomatology, Faculty of Dentistry, University of Seville, 41004 Sevilla, Spain; (E.V.-O.); (I.O.-G.); (A.J.-G.)
| | - Iván Ortiz-Garcia
- Department of Stomatology, Faculty of Dentistry, University of Seville, 41004 Sevilla, Spain; (E.V.-O.); (I.O.-G.); (A.J.-G.)
| | - Antonio Pérez-Pérez
- Departamento de Bioquímica Médica y Biología Molecular e Inmunología, Hospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Avenida Sánchez Pizjuán 4, 41009 Sevilla, Spain; (A.P.-P.); (V.S.-M.)
| | - Victor Sánchez-Margalet
- Departamento de Bioquímica Médica y Biología Molecular e Inmunología, Hospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Avenida Sánchez Pizjuán 4, 41009 Sevilla, Spain; (A.P.-P.); (V.S.-M.)
| | - Alvaro Jiménez-Guerra
- Department of Stomatology, Faculty of Dentistry, University of Seville, 41004 Sevilla, Spain; (E.V.-O.); (I.O.-G.); (A.J.-G.)
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DiCecco LA, Zhang J, Casagrande T, Grandfield K. New Avenues for Capturing Mineralization Events at Biomaterial Interfaces with Liquid-Transmission Electron Microscopy. NANO LETTERS 2024; 24:7821-7824. [PMID: 38913950 DOI: 10.1021/acs.nanolett.4c01525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Liquid-transmission electron microscopy (liquid-TEM) provides exciting potential for capturing mineralization events at biomaterial interfaces, though it is largely unexplored. To address this, we established a unique approach to visualize calcium phosphate (CaP)-titanium (Ti) interfacial mineralization events by combining the nanofabrication of Ti lamellae by focused ion beam with in situ liquid-TEM. Multiphasic CaP particles were observed to nucleate, adhere, and form different assemblies onto and adjacent to Ti lamellae. Here, we discuss new approaches for exploring the interaction between biomaterials and liquids at the nanoscale. Driving this technology is crucial for understanding and controlling biomineralization to improve implant osseointegration and direct new pathways for mineralized tissue disease treatment in the future.
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Affiliation(s)
- Liza-Anastasia DiCecco
- Department of Materials Science and Engineering, McMaster University, Hamilton, ON, L8S 4L8, Canada
- Department of Biomedical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Jing Zhang
- Department of Materials Science and Engineering, McMaster University, Hamilton, ON, L8S 4L8, Canada
| | - Travis Casagrande
- Canadian Centre for Electron Microscopy, McMaster University, Hamilton, ON, L8S 4L8, Canada
| | - Kathryn Grandfield
- Department of Materials Science and Engineering, McMaster University, Hamilton, ON, L8S 4L8, Canada
- School of Biomedical Engineering, McMaster University, Hamilton, ON, L8S 4L8, Canada
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Omar O, Rydén L, Wamied AR, Al-Otain I, Alhawaj H, Abuohashish H, Al-Qarni F, Emanuelsson L, Johansson A, Palmquist A, Thomsen P. Molecular mechanisms of poor osseointegration in irradiated bone: In vivo study in a rat tibia model. J Clin Periodontol 2024. [PMID: 38798064 DOI: 10.1111/jcpe.14021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 04/30/2024] [Accepted: 05/15/2024] [Indexed: 05/29/2024]
Abstract
AIM Radiotherapy is associated with cell depletion and loss of blood supply, which are linked to compromised bone healing. However, the molecular events underlying these effects at the tissue-implant interface have not been fully elucidated. This study aimed to determine the major molecular mediators associated with compromised osseointegration due to previous exposure to radiation. MATERIALS AND METHODS Titanium implants were placed in rat tibiae with or without pre-exposure to 20 Gy irradiation. Histomorphometric, biomechanical, quantitative polymerase chain reaction (qPCR) and enzyme-linked immunosorbent assay analyses were performed at 1 and 4 weeks after implantation. RESULTS The detrimental effects of irradiation were characterized by reduced bone-implant contact and removal torque. Furthermore, pre-exposure to radiation induced different molecular dysfunctions such as (i) increased expression of pro-inflammatory (Tnf) and osteoclastic (Ctsk) genes and decreased expression of the bone formation (Alpl) gene in implant-adherent cells; (ii) increased expression of bone formation (Alpl and Bglap) genes in peri-implant bone; and (iii) increased expression of pro-inflammatory (Tnf) and pro-fibrotic (Tgfb1) genes in peri-implant soft tissue. The serum levels of pro-inflammatory, bone formation and bone resorption proteins were greater in the irradiated rats. CONCLUSIONS Irradiation causes the dysregulation of multiple biological activities, among which perturbed inflammation seems to play a common role in hindering osseointegration.
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Affiliation(s)
- Omar Omar
- Department of Biomedical Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Louise Rydén
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | | | - Ibrahim Al-Otain
- Radiation Oncology, King Fahad Specialist Hospital, Dammam, Saudi Arabia
| | - Hussain Alhawaj
- Department of Environmental Health Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Hatem Abuohashish
- Department of Biomedical Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Faisal Al-Qarni
- Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Lena Emanuelsson
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anna Johansson
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anders Palmquist
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Peter Thomsen
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Matta RE, Berger L, Loehlein M, Leven L, Taxis J, Wichmann M, Motel C. Stress Distribution within the Peri-Implant Bone for Different Implant Materials Obtained by Digital Image Correlation. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2161. [PMID: 38730967 PMCID: PMC11085640 DOI: 10.3390/ma17092161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 04/23/2024] [Accepted: 04/28/2024] [Indexed: 05/13/2024]
Abstract
Stress distribution and its magnitude during loading heavily influence the osseointegration of dental implants. Currently, no high-resolution, three-dimensional method of directly measuring these biomechanical processes in the peri-implant bone is available. The aim of this study was to measure the influence of different implant materials on stress distribution in the peri-implant bone. Using the three-dimensional ARAMIS camera system, surface strain in the peri-implant bone area was compared under simulated masticatory forces of 300 N in axial and non-axial directions for titanium implants and zirconia implants. The investigated titanium implants led to a more homogeneous stress distribution than the investigated zirconia implants. Non-axial forces led to greater surface strain on the peri-implant bone than axial forces. Thus, the implant material, implant system, and direction of force could have a significant influence on biomechanical processes and osseointegration within the peri-implant bone.
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Affiliation(s)
- Ragai Edward Matta
- Dental Clinic 2-Dental Prosthodontics, University Hospital Erlangen, Glueckstrasse 11, 91054 Erlangen, Germany; (L.B.); (M.L.); (L.L.); (M.W.); (C.M.)
| | - Lara Berger
- Dental Clinic 2-Dental Prosthodontics, University Hospital Erlangen, Glueckstrasse 11, 91054 Erlangen, Germany; (L.B.); (M.L.); (L.L.); (M.W.); (C.M.)
| | - Moritz Loehlein
- Dental Clinic 2-Dental Prosthodontics, University Hospital Erlangen, Glueckstrasse 11, 91054 Erlangen, Germany; (L.B.); (M.L.); (L.L.); (M.W.); (C.M.)
| | - Linus Leven
- Dental Clinic 2-Dental Prosthodontics, University Hospital Erlangen, Glueckstrasse 11, 91054 Erlangen, Germany; (L.B.); (M.L.); (L.L.); (M.W.); (C.M.)
| | - Juergen Taxis
- Clinic for Oro- and Maxillofacial Surgery, University hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany;
| | - Manfred Wichmann
- Dental Clinic 2-Dental Prosthodontics, University Hospital Erlangen, Glueckstrasse 11, 91054 Erlangen, Germany; (L.B.); (M.L.); (L.L.); (M.W.); (C.M.)
| | - Constantin Motel
- Dental Clinic 2-Dental Prosthodontics, University Hospital Erlangen, Glueckstrasse 11, 91054 Erlangen, Germany; (L.B.); (M.L.); (L.L.); (M.W.); (C.M.)
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Miron RJ, Estrin NE, Sculean A, Zhang Y. Understanding exosomes: Part 2-Emerging leaders in regenerative medicine. Periodontol 2000 2024; 94:257-414. [PMID: 38591622 DOI: 10.1111/prd.12561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 02/16/2024] [Accepted: 02/21/2024] [Indexed: 04/10/2024]
Abstract
Exosomes are the smallest subset of extracellular signaling vesicles secreted by most cells with the ability to communicate with other tissues and cell types over long distances. Their use in regenerative medicine has gained tremendous momentum recently due to their ability to be utilized as therapeutic options for a wide array of diseases/conditions. Over 5000 publications are currently being published yearly on this topic, and this number is only expected to dramatically increase as novel therapeutic strategies continue to be developed. Today exosomes have been applied in numerous contexts including neurodegenerative disorders (Alzheimer's disease, central nervous system, depression, multiple sclerosis, Parkinson's disease, post-traumatic stress disorders, traumatic brain injury, peripheral nerve injury), damaged organs (heart, kidney, liver, stroke, myocardial infarctions, myocardial infarctions, ovaries), degenerative processes (atherosclerosis, diabetes, hematology disorders, musculoskeletal degeneration, osteoradionecrosis, respiratory disease), infectious diseases (COVID-19, hepatitis), regenerative procedures (antiaging, bone regeneration, cartilage/joint regeneration, osteoarthritis, cutaneous wounds, dental regeneration, dermatology/skin regeneration, erectile dysfunction, hair regrowth, intervertebral disc repair, spinal cord injury, vascular regeneration), and cancer therapy (breast, colorectal, gastric cancer and osteosarcomas), immune function (allergy, autoimmune disorders, immune regulation, inflammatory diseases, lupus, rheumatoid arthritis). This scoping review is a first of its kind aimed at summarizing the extensive regenerative potential of exosomes over a broad range of diseases and disorders.
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Affiliation(s)
- Richard J Miron
- Department of Periodontology, University of Bern, Bern, Switzerland
| | - Nathan E Estrin
- Advanced PRF Education, Venice, Florida, USA
- School of Dental Medicine, Lake Erie College of Osteopathic Medicine, Bradenton, Florida, USA
| | - Anton Sculean
- Department of Periodontology, University of Bern, Bern, Switzerland
| | - Yufeng Zhang
- Department of Oral Implantology, University of Wuhan, Wuhan, China
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Grandfield K, Binkley DM, Ay B, Liu ZM, Wang X, Davies JE. Nanoscale implant anchorage aided by cement line deposition into titanium dioxide nanotubes. J Biomed Mater Res A 2023; 111:1866-1874. [PMID: 37358344 DOI: 10.1002/jbm.a.37585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/25/2023] [Accepted: 06/09/2023] [Indexed: 06/27/2023]
Abstract
The success of titanium dental implants relies on osseointegration, the load-bearing connection between bone tissue and the device that, in contact osteogenesis, comprises the deposition of bony cement line matrix onto the implant surface. Titanium dioxide nanotubes (NTs) are considered a promising surface for improved osseointegration, yet the mechanisms of cement line integration with such features remains elusive. Herein, we illustrate cement line deposition into NTs on the surface of titanium implants with two underlaying microstructures: a machined surface or a blasted/acid etched surface placed in the tibiae of Wistar rats. After retrieval, scanning electron microscopy of tissue reflected from the implant surface indicated minimal incursion of the cement line matrix into the NTs. To investigate this further, focused ion beam was utilized to prepare cross-sectional samples that could be characterized using scanning transmission electron microscopy. The cement line matrix covered NTs regardless of underlying microstructure, which was further confirmed by elemental analysis. In some instances, cement line infiltration into the NTs was noted, which reveals a mechanism of nanoscale anchorage. This study is the first to demonstrate cement line deposition into titanium NTs, suggesting nano-anchorage as a mechanism for the success of the NT modified surfaces in vivo.
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Affiliation(s)
- Kathryn Grandfield
- Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, Canada
- School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Dakota Marie Binkley
- Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, Canada
- School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Birol Ay
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Zhen Mei Liu
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Xiaoyue Wang
- Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, Canada
| | - John E Davies
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
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Ma T, Wang CX, Ge XY, Zhang Y. Applications of Polydopamine in Implant Surface Modification. Macromol Biosci 2023; 23:e2300067. [PMID: 37229654 DOI: 10.1002/mabi.202300067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/22/2023] [Indexed: 05/27/2023]
Abstract
There is great clinical demand for orthopedic and dental implant surface modification methods to prevent osseointegration failure and improve implant biological functions. Notably, dopamine (DA) can be polymerized to form polydopamine (PDA), which is similar to the adhesive proteins secreted by mussels, to form a stable bond between the bone surface and implants. Therefore, PDA has the potential to be used as an implant surface modification material with good hydrophilicity, roughness, morphology, mechanical strength, biocompatibility, antibacterial activity, cellular adhesion, and osteogenesis. In addition, PDA degradation releases DA into the surrounding microenvironment, which is found to play an important role in regulating DA receptors on both osteoblasts and osteoclasts during the bone remodeling process. Furthermore, the adhesion properties of PDA suggest its use as an intermediate layer in assisting other functional bone remodeling materials, such as nanoparticles, growth factors, peptides, and hydrogels, to form "dual modifications." The purpose of this review is to summarize the recent progress in research on PDA and its derivatives as orthopedic and dental implant surface modification materials and to analyze the multiple functions of PDA.
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Affiliation(s)
- Ting Ma
- Department of Oral Implantology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, 100081, P. R. China
| | - Chen-Xi Wang
- Department of Oral Implantology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, 100081, P. R. China
| | - Xi-Yuan Ge
- Central Laboratory, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, 100081, P. R. China
| | - Yu Zhang
- Department of Oral Implantology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, 100081, P. R. China
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Kaou MH, Furkó M, Balázsi K, Balázsi C. Advanced Bioactive Glasses: The Newest Achievements and Breakthroughs in the Area. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2287. [PMID: 37630871 PMCID: PMC10459405 DOI: 10.3390/nano13162287] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 07/28/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023]
Abstract
Bioactive glasses (BGs) are especially useful materials in soft and bone tissue engineering and even in dentistry. They can be the solution to many medical problems, and they have a huge role in the healing processes of bone fractures. Interestingly, they can also promote skin regeneration and wound healing. Bioactive glasses are able to attach to the bone tissues and form an apatite layer which further initiates the biomineralization process. The formed intermediate apatite layer makes a connection between the hard tissue and the bioactive glass material which results in faster healing without any complications or side effects. This review paper summarizes the most recent advancement in the preparation of diverse types of BGs, such as silicate-, borate- and phosphate-based bioactive glasses. We discuss their physical, chemical, and mechanical properties detailing how they affect their biological performances. In order to get a deeper insight into the state-of-the-art in this area, we also consider their medical applications, such as bone regeneration, wound care, and dental/bone implant coatings.
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Affiliation(s)
- Maroua H. Kaou
- Centre for Energy Research, Institute of Technical Physics and Materials Science, Konkoly-Thege M. Str. 29-33, 1121 Budapest, Hungary; (M.H.K.); (M.F.); (K.B.)
- Doctoral School of Materials Science and Technologies, Óbuda University, Bécsi Str. 96/B, 1030 Budapest, Hungary
| | - Mónika Furkó
- Centre for Energy Research, Institute of Technical Physics and Materials Science, Konkoly-Thege M. Str. 29-33, 1121 Budapest, Hungary; (M.H.K.); (M.F.); (K.B.)
| | - Katalin Balázsi
- Centre for Energy Research, Institute of Technical Physics and Materials Science, Konkoly-Thege M. Str. 29-33, 1121 Budapest, Hungary; (M.H.K.); (M.F.); (K.B.)
| | - Csaba Balázsi
- Centre for Energy Research, Institute of Technical Physics and Materials Science, Konkoly-Thege M. Str. 29-33, 1121 Budapest, Hungary; (M.H.K.); (M.F.); (K.B.)
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Arteaga A, Ranathunga DTS, Qu J, Biguetti CC, Nielsen SO, C Rodrigues D. Exogenous Protein Delivery of Ionic Liquid-Mediated HMGB1 Coating on Titanium Implants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:2204-2217. [PMID: 36716434 DOI: 10.1021/acs.langmuir.2c02688] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Strategies for modifying titanium (Ti) implant surfaces are becoming increasingly popular to enhance osseointegration during acute and inflammatory healing stages. In this study, two dicationic imidazolium-based ionic liquids (IonLs) containing phenylalanine and methionine anions (IonL-Phe(1,10-bis(3-methylimidazolium-1-yl)decane diphenylalanine) and IonL-Met(1,10-bis(3-methylimidazolium-1-yl)decane dimethionine)) were investigated to stably deliver exogenous proteins on Ti to promote osseointegration. The protein selected for this study is High-Mobility Group Box 1 (HMGB1), which recruits inflammatory and mesenchymal stem cells to the implantation site, contributing to healing. To explore IonL-Ti interactions and HMGB1 stability on the IonL-coated surface, experimental characterization techniques including X-ray photoelectron spectroscopy, scanning electron microscopy, dynamic scanning calorimetry (DSC), and liquid chromatography mass spectrometry (LC-MS) were used along with molecular dynamics (MD) computer simulations to provide a detailed molecular level description. Results show well-structured IonL molecules on the Ti surface that impact protein crystallization and coating morphology. IonL cations and anions were found to bind strongly to oppositely charged residues of the protein. LC-MS/MS reveals that HMGB1 B-box lysine residues bind strongly to the IonLs. Stronger interactions of HMGB1 with Ion-Phe in contrast to IonL-Met results in greater retention capacity of HMGB1 in the IonL-Phe coating. Overall, this study provides evidence that the selected IonLs strongly interact with HMGB1, which can be a potential surface treatment for bone-implantable Ti devices.
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Affiliation(s)
- Alexandra Arteaga
- Department of Bioengineering, The University of Texas at Dallas, Richardson, Texas75080, United States
| | - Dineli T S Ranathunga
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas75080, United States
| | - Jiayi Qu
- School of Dentistry, University of Texas Health San Antonio, San Antonio, Texas78229, United States
| | - Claudia C Biguetti
- School of Medicine, University of Texas Rio Grande Valley, Edinburg, Texas78539, United States
| | - Steven O Nielsen
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas75080, United States
| | - Danieli C Rodrigues
- Department of Bioengineering, The University of Texas at Dallas, Richardson, Texas75080, United States
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Schwartz A, Kossenko A, Zinigrad M, Gofer Y, Borodianskiy K, Sobolev A. Hydroxyapatite Coating on Ti-6Al-7Nb Alloy by Plasma Electrolytic Oxidation in Salt-Based Electrolyte. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15207374. [PMID: 36295438 PMCID: PMC9611249 DOI: 10.3390/ma15207374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/15/2022] [Accepted: 10/19/2022] [Indexed: 05/15/2023]
Abstract
Titanium alloys have good biocompatibility and good mechanical properties, making them particularly suitable for dental and orthopedic implants. Improving their osseointegration with human bones is one of the most essential tasks. This can be achieved by developing hydroxyapatite (HA) on the treating surface using the plasma electrolytic oxidation (PEO) method in molten salt. In this study, a coating of titanium oxide-containing HA nanoparticles was formed on Ti-6Al-7Nb alloy by PEO in molten salt. Then, samples were subjected to hydrothermal treatment (HTT) to form HA crystals sized 0.5 to 1 μm. The effect of the current and voltage frequency for the creation of the coating on the morphology, chemical, and phase composition was studied. The anti-corrosion properties of the samples were studied using the potentiodynamic polarization test (PPT) and electrochemical impedance spectroscopy (EIS). An assessment of the morphology of the sample formed at a frequency of 100 Hz shows that the structure of this coating has a uniform submicron porosity, and its surface shows high hydrophilicity and anti-corrosion properties (4.90 × 106 Ohm·cm2). In this work, for the first time, the process of formation of a bioactive coating consisting of titanium oxides and HA was studied by the PEO method in molten salts.
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Affiliation(s)
- Avital Schwartz
- Department of Chemical Engineering, Ariel University, Ariel 4070000, Israel
| | - Alexey Kossenko
- Department of Chemical Engineering, Ariel University, Ariel 4070000, Israel
| | - Michael Zinigrad
- Department of Chemical Engineering, Ariel University, Ariel 4070000, Israel
| | - Yosef Gofer
- Department of Chemistry, Bar Ilan University, Ramat-Gan 5290002, Israel
| | | | - Alexander Sobolev
- Department of Chemical Engineering, Ariel University, Ariel 4070000, Israel
- Correspondence: ; Tel.: +972-3-9143085
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Wei Y, Chen M, Li M, Wang D, Cai K, Luo Z, Hu Y. Aptamer/Hydroxyapatite-Functionalized Titanium Substrate Promotes Implant Osseointegration via Recruiting Mesenchymal Stem Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:42915-42930. [PMID: 36107718 DOI: 10.1021/acsami.2c10809] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Endowing bone regeneration materials with both stem cell recruitment and osteoinduction properties is a key factor in promoting osseointegration of titanium (Ti) implants. In this study, Apt19s-grafted oxidized hyaluronic acid (OHA) was deposited onto a protein-mediated biomineralization hydroxyapatite (HAp) coating of Ti. HAp was achieved by the treatment of lysozyme and tris(2-carboxyethyl) phosphonate mixture and then soaked in calcium ion (Ca2+) solution to obtain functional Ti substrate (Ti/HAp/OHA-Apt). In vitro studies confirmed that Ti/HAp/OHA-Apt could effectively maintain the sustained release of Apt19s from Ti for 7 days. The released Apt19s significantly enhanced the migration of bone marrow mesenchymal stem cells (MSCs), which was reflected by the experiment of transwell assay, wound healing, and zymogram detection. Compared with pure Ti, Ti/HAp/OHA-Apt was able to adjust the adsorption of functional proteins at the Ti-based interface to expose their active sites, which significantly increased the expression of adhesion-associated proteins (vinculin and tensin) in MSCs to promote their adhesion on Ti-based interface. In vitro cell experiments of alkaline phosphatase activity staining, mineralization detection, and expression of osteogenesis-related genes showed that Ti/HAp/OHA-Apt significantly enhanced the osteogenic differentiation ability of MSCs, which may be highly related to the porous structure of hydroxyapatite on Ti interface. In vivo test of Micro-CT, H&E staining, and histochemical staining further confirmed that Ti/HAp/OHA-Apt was able to promote MSC recruitment at the peri-implant interface to form new bone. This work provides a new approach to develop functional Ti-based materials for bone defect repair.
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Affiliation(s)
- Yujia Wei
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Maohua Chen
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Menghuan Li
- School of Life Sciences, Chongqing University, Chongqing 400044, China
| | - Dong Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Zhong Luo
- School of Life Sciences, Chongqing University, Chongqing 400044, China
| | - Yan Hu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
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12
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Johansson ML, Shah FA, Eeg-Olofsson M, Monksfield P, Thomsen P, Palmquist A. Long-term osseointegration of laser-ablated hearing implants in sheep cranial bone. Front Surg 2022; 9:885964. [PMID: 36117815 PMCID: PMC9470750 DOI: 10.3389/fsurg.2022.885964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 08/12/2022] [Indexed: 11/23/2022] Open
Abstract
Osseointegration, the ability for an implant to be anchored in bone tissue with direct bone-implant contact and allowing for continuous adaptive remodelling, is clinically used in different reconstructive fields, such as dentistry, orthopedics and otology. The latter uses a bone conducting sound processor connected to a skin-penetrating abutment that is mounted on a titanium implant placed in the temporal bone, thereby acting as a path for transmission of the vibrations generated by the sound processor. The success of the treatment relies on bone healing and osseointegration, which could be improved by surface modifications. The aim of this study was to evaluate the long-term osseointegration in a sheep skull model and compare a laser-ablated implant surface with a machined implant. Commercially available 4 mm titanium implants, either with a machined (Wide Ponto) or a laser-ablated surface (Ponto BHX, Oticon Medical, Sweden), were used in the current study. The surfaces were evaluated by scanning electron microscopy. The implantation was performed with a full soft tissue flap and the osteotomy was prepared using the MIPS drill kit (Oticon Medical, Sweden) prior to installation of the implants in the frontal bone of eight female sheep. After five months, biopsies including the implant and surrounding bone tissue obtained, processed and analysed using histology, histomorphometry, scanning electron microscopy and Raman spectroscopy. The animals healed well, without signs of adverse events. Histomorphometry showed a large amount of bone tissue around both implant types, with 75% of the threaded area occupied by bone for both implant types. A large amount of bone-implant contact was observed for both implant types, with 67%–71% of the surface covered by bone. Both implant types were surrounded by mature remodelled lamellar bone with high mineral content, corroborating the histological observations. The current results show that the laser-ablated surface induces healing similar to the well-known clinically used machined surface in ovine cranial bone. In conclusion, the present long-term experimental results indicate that a laser-ablated implant performs equally well as a clinically used implant with a machined surface. This, together with previously reported, improved early biomechanical anchorage, suggests future, safe and efficient clinical potential.
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Affiliation(s)
- Martin Lars Johansson
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Research and Technology, Oticon Medical AB, Askim, Sweden
- Correspondence: Martin Lars Johansson
| | - Furqan A. Shah
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Måns Eeg-Olofsson
- Department of Otorhinolaryngology Head and Neck Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Otorhinolaryngology, Head and Neck Surgery, Region Västra Götaland, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Peter Monksfield
- ENT Department, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
| | - Peter Thomsen
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anders Palmquist
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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13
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de Avila ED, Nagay BE, Pereira MMA, Barão VAR, Pavarina AC, van den Beucken JJJP. Race for Applicable Antimicrobial Dental Implant Surfaces to Fight Biofilm-Related Disease: Advancing in Laboratorial Studies vs Stagnation in Clinical Application. ACS Biomater Sci Eng 2022; 8:3187-3198. [PMID: 35816289 DOI: 10.1021/acsbiomaterials.2c00160] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Across years, potential strategies to fight peri-implantitis have been notoriously explored through the antimicrobial coating implant surfaces capable of interfering with the bacterial adhesion process. However, although experimental studies have significantly advanced, no product has been marketed so far. For science to reach the society, the commercialization of research outcomes is necessary to provide real advancement in the biomedical field. Therefore, the aim of this study was to investigate the challenges involved in the development of antimicrobial dental implant surfaces to fight peri-implantitis, through a systematic search. Research articles reporting antimicrobial dental implant surfaces were identified by searching PubMed, Scopus, Web of Science, The Cochrane Library, Embase, and System of Information on Grey Literature in Europe, between 2008 and 2020. A total of 1778 studies were included for quality assessment and the review. An impressive number of 1655 articles (93,1%) comprised in vitro studies, whereas 123 articles refer to in vivo investigations. From those 123, 102 refer to animal studies and only 21 articles were published on the clinical performance of antibacterial dental implant surfaces. The purpose of animal studies is to test how safe and effective new treatments are before they are tested in people. Therefore, the discrepancy between the number of published studies clearly reveals that preclinical investigations still come up against several challenges to overcome before moving forward to a clinical setting. Additionally, researchers need to recognize that the complex journey from lab to market requires more than a great idea and resources to develop a commercial invention; research teams must possess the skills necessary to commercialize an invention.
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Affiliation(s)
- Erica D de Avila
- Dental Research Division, Guarulhos University (UNG), Praça Tereza Cristina, 88 - Centro, Guarulhos, São Paulo 07023-070, Brazil.,Department of Dental Materials and Prosthodontics, School of Dentistry at Araraquara, Sao Paulo State University (UNESP), Rua Humaita, 1680, Araraquara, São Paulo 14801-903, Brazil
| | - Bruna E Nagay
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, Piracicaba, São Paulo 13414-903, Brazil
| | - Marta M A Pereira
- Department of Dental Materials and Prosthodontics, School of Dentistry at Araraquara, Sao Paulo State University (UNESP), Rua Humaita, 1680, Araraquara, São Paulo 14801-903, Brazil
| | - Valentim A R Barão
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, Piracicaba, São Paulo 13414-903, Brazil
| | - Ana Claudia Pavarina
- Department of Dental Materials and Prosthodontics, School of Dentistry at Araraquara, Sao Paulo State University (UNESP), Rua Humaita, 1680, Araraquara, São Paulo 14801-903, Brazil
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14
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Contemporary Concepts in Osseointegration of Dental Implants: A Review. BIOMED RESEARCH INTERNATIONAL 2022; 2022:6170452. [PMID: 35747499 PMCID: PMC9213185 DOI: 10.1155/2022/6170452] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 05/26/2022] [Indexed: 11/18/2022]
Abstract
In a society highly conscious of esthetics, prosthetic rehabilitation of lost teeth with tissue-integrated implants has gained wide acceptance and demand by patients and clinicians. The backbone of these tissue-integrated implants is the biotechnical process of osseointegration. Although the concept has been introduced and discussed for ages, the deepening knowledge about its cellular and molecular mechanisms has led the researchers to borrow further into the factors influencing the process of osseointegration. This has aided in the hastening and improving the process of osseointegration by exploiting several, even the minutest, details and events taking place in this natural process. Recently, due to the high esthetic expectations of the patients, the implants are being loaded immediately, which demands a high degree of implant stability. Implant stability, especially secondary stability, largely depends on bone formation and integration of implants to the osseous tissues. Various factors that influence the rate and success of osseointegration can either be categorized as those related to implant characteristics like the physical and chemical macro- and microdesign of implants or the bone characteristics like the amount and quality of bone and the local and systemic host conditions, or the time or protocol followed for the functional loading of the dental implant. To address the shortcomings in osseointegration due to any of the factors, it is mandatory that continuous and reliable monitoring of the status of osseointegration is done. This review attempts to encompass the mechanisms, factors affecting, and methods to assess osseointegration, followed by a discussion on the recent advances and future perspectives in dental implantology to enhance the process of osseointegration. The review was aimed at igniting the inquisitive minds to usher further the development of technology that enhances osseointegration.
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15
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Dargusch MS, Balasubramani N, Yang N, Johnston S, Ali Y, Wang G, Venezuela J, Carluccio J, Lau C, Allavena R, Liang D, Mardon K, Ye Q. In vivo performance of a rare earth free Mg–Zn–Ca alloy manufactured using twin roll casting for potential applications in the cranial and maxillofacial fixation devices. Bioact Mater 2022; 12:85-96. [PMID: 35087965 PMCID: PMC8777300 DOI: 10.1016/j.bioactmat.2021.10.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/24/2021] [Accepted: 10/18/2021] [Indexed: 12/20/2022] Open
Abstract
A magnesium alloy containing essential, non-toxic, biodegradable elements such as Ca and Zn has been fabricated using a novel twin-roll casting process (TRC). Microstructure, mechanical properties, in vivo corrosion and biocompatibility have been assessed and compared to the properties of the rare earth (RE) element containing WE43 alloy. TRC Mg-0.5 wt% Zn- 0.5 wt% Ca exhibited fine grains with an average grain size ranging from 70 to 150 μm. Mechanical properties of a TRC Mg-0.5Zn-0.5Ca alloy showed an ultimate tensile strength of 220 MPa and ductility of 9.3%. The TRC Mg-0.5Zn-0.5Ca alloy showed a degradation rate of 0.51 ± 0.07 mm/y similar to that of the WE43 alloy (0.47 ± 0.09 mm/y) in the rat model after 1 week of implantation. By week 4 the biodegradation rates of both alloys studied were lowered and stabilized with fewer gas pockets around the implant. The histological analysis shows that both WE43 and TRC Mg-0.5Zn-0.5Ca alloy triggered comparable tissue healing responses at respective times of implantation. The presence of more organized scarring tissue around the TRC Mg-0.5Zn-0.5Ca alloys suggests that the biodegradation of the RE-free alloy may be more conducive to the tissue proliferation and remodelling process. Mg-0.5Zn-0.5Ca alloy plates were fabricated by a twin-roll casting (TRC) process. TRC alloy showed an ultimate strength and elongation of 221 ± 2 MPa and 9 ± 2%. Gas development during in vivo degradation was analysed using μ-CT techniques. Histological analysis revealed a good biocompatibility and promoted healing.
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16
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Sayardoust S, Norstedt W, Shah FA. The long-term impact of alveolar ridge preservation with xenograft bone mineral on peri-implant health after 5 years in function: A retrospective cohort study of 108 patients assessed clinically and radiologically. Clin Exp Dent Res 2022; 8:640-649. [PMID: 35510846 PMCID: PMC9209797 DOI: 10.1002/cre2.583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 04/11/2022] [Accepted: 04/20/2022] [Indexed: 11/30/2022] Open
Abstract
Objectives When teeth are lost, dental implants contribute to improved oral function and quality of life. Limitations in dental implant placement arising from poor bone anatomy may be circumvented via alveolar ridge preservation (ARP). The aim is to evaluate the long‐term impact of ARP on peri‐implant health and the relationship with common risk indicators such as smoking and history of periodontitis. Materials and Methods One hundred and eight patients were enrolled in this retrospective cohort study with 308 implants. Of these, ∼41% were placed in bone sites that had previously received ARP with deproteinized bovine bone mineral xenograft. Association between baseline variables: ARP, age, gender, number of implants per patient, anatomical site, smoking, and previous history of grade III/IV periodontitis, and outcome variables: mucositis, peri‐implantitis, implant loss, full‐mouth plaque score (FMPS), full‐mouth bleeding score, and marginal bone loss (MBL) was evaluated using both univariate and multivariate models. Results After 5 years, the overall survival rate was 93.7%. The occurrence of peri‐implantitis was 21.3% and the extent of MBL was ~2.2 mm. Both peri‐implantitis occurrence and MBL were comparable between ARP+ and ARP−. Smoking is associated with higher FMPS and MBL. Conclusions The findings indicate that peri‐implant health can be maintained around dental implants for up to 5 years in ARP+ sites using Bio‐Oss®. Smoking is a major risk indicator for peri‐implantitis, whereas the association between history of periodontitis and the risk of peri‐implantitis, based on this specific, well‐maintained cohort and the specific implants used, remains inconclusive.
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Affiliation(s)
- Shariel Sayardoust
- Centre for Oral Health, School of Health and WelfareJönköping UniversityJönköpingSweden
- Department of PeriodontologyInstitute for Postgraduate Dental EducationJönköpingSweden
- Department of Biomaterials, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Wilhelm Norstedt
- Department of PeriodontologyInstitute for Postgraduate Dental EducationJönköpingSweden
| | - Furqan A. Shah
- Department of Biomaterials, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
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17
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Sayardoust S, Johansson A, Jönsson D. Do Probiotics Cause a Shift in the Microbiota of Dental Implants—A Systematic Review and Meta-Analysis. Front Cell Infect Microbiol 2022; 12:823985. [PMID: 35372118 PMCID: PMC8966653 DOI: 10.3389/fcimb.2022.823985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 02/03/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveThe primary aim of this current systematic review and meta-analysis was to evaluate the potential microbiological effect of probiotics on the implant microbiota. The secondary aim was to evaluate if probiotics have any effect as an adjunct to non-surgical peri-implant treatment in reducing peri-implant mucositis and peri-implantitis clinical parameters—bleeding on probing, modified Gingival Index, and pocket depth.MethodsThe research focus questions were constructed in accordance with the Participants, Intervention, Comparison, and Outcomes (PICO) criteria, and a PROSPERO protocol was registered. A comprehensive systematic search in MEDLINE via the PubMed, Scopus, and Web of Science Core Collection databases was conducted. Two independent reviewers screened the reports based on the PICO criteria—inclusion and exclusion criteria.ResultsIn total, 467 records were identified, and ultimately, 7 papers were included: 3 papers in the qualitative synthesis of microbiological effect and 4 in the meta-analysis synthesis on pocket depth. The data synthesis showed that probiotics had no detectable effect on the implant microflora, and in the following data synthesis, no clinical peri-implantitis variable showed a significantly beneficial effect from probiotics in the test group compared to the control group.ConclusionWithin the limitations of this review, the oral implant microflora is not affected by probiotics nor do probiotics add any effect to the conventional non-surgical treatment of peri-implant mucositis and peri-implantitis.
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Affiliation(s)
- Shariel Sayardoust
- School of Health and Welfare, Jönköping University, Jönköping, Sweden
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- *Correspondence: Shariel Sayardoust,
| | - Anders Johansson
- Division of Molecular Periodontology, Department of Odontology, Umeå University, Umeå, Sweden
| | - Daniel Jönsson
- Faculty of Odontology, Malmö University, Malmö, Sweden
- Department of Clinical Sciences, Lund University, Malmö, Sweden
- Department of Odontology and Oral Health, Public Dental Care of Skåne, Lund, Sweden
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18
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Jung J, Choi YJ, Lee SJ, Choi YS, Douangdeuane B, Souliya O, Jeong S, Park S, Hwang DY, Seo S. Promoting Effects of Titanium Implants Coated with Dipterocarpus tuberculatus Extract on Osseointegration. ACS Biomater Sci Eng 2022; 8:847-858. [DOI: 10.1021/acsbiomaterials.1c01220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jaewon Jung
- Department of Biomaterials Science (BK21 FOUR Program), College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
| | - Yun Ju Choi
- Department of Biomaterials Science (BK21 FOUR Program), College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
| | - Su Jin Lee
- Department of Biomaterials Science (BK21 FOUR Program), College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
| | - Yu-Sang Choi
- DENTIS, 6, Yuram-ro, Dong-gu, Daegu 41065, Republic of Korea
| | | | - Onevilay Souliya
- Ministry of Health, Institute of Traditional Medicine, Vientiane 0103, Lao PDR
| | - Suhui Jeong
- Department of Biomaterials Science (BK21 FOUR Program), College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
| | - Sohae Park
- Department of Biomaterials Science (BK21 FOUR Program), College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
| | - Dae Youn Hwang
- Department of Biomaterials Science (BK21 FOUR Program), College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
| | - Sungbaek Seo
- Department of Biomaterials Science (BK21 FOUR Program), College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
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Karazisis D, Omar O, Petronis S, Thomsen P, Rasmusson L. Molecular Response to Nanopatterned Implants in the Human Jaw Bone. ACS Biomater Sci Eng 2021; 7:5878-5889. [PMID: 34851620 PMCID: PMC8672355 DOI: 10.1021/acsbiomaterials.1c00861] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Implant surface modification by nanopatterning is an interesting route for enhancing osseointegration in humans. Herein, the molecular response to an intentional, controlled nanotopography pattern superimposed on screw-shaped titanium implants is investigated in human bone. When clinical implants are installed, additional two mini-implants, one with a machined surface (M) and one with a machined surface superimposed with a hemispherical nanopattern (MN), are installed in the posterior maxilla. In the second-stage surgery, after 6-8 weeks, the mini-implants are retrieved by unscrewing, and the implant-adherent cells are subjected to gene expression analysis using quantitative polymerase chain reaction (qPCR). Compared to those adherent to the machined (M) implants, the cells adherent to the nanopatterned (MN) implants demonstrate significant upregulation (1.8- to 2-fold) of bone-related genes (RUNX2, ALP, and OC). No significant differences are observed in the expression of the analyzed inflammatory and remodeling genes. Correlation analysis reveals that older patient age is associated with increased expression of proinflammatory cytokines (TNF-α and MCP-1) on the machined implants and decreased expression of pro-osteogenic factor (BMP-2) on the nanopatterned implants. Controlled nanotopography, in the form of hemispherical 60 nm protrusions, promotes gene expressions related to early osteogenic differentiation and osteoblastic activity in implant-adherent cells in the human jaw bone.
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Affiliation(s)
- Dimitrios Karazisis
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden.,Department of Oral and Maxillofacial Surgery, Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden
| | - Omar Omar
- Department of Biomedical Dental Sciences, College of Dentistry, Imam Abdulrahman bin Faisal University, Dammam 34212, Saudi Arabia
| | - Sarunas Petronis
- Chemistry, Biomaterials and Textiles, RISE Research Institutes of Sweden, 501 15 Borås, Sweden
| | - Peter Thomsen
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden
| | - Lars Rasmusson
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden.,Department of Oral and Maxillofacial Surgery, Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden.,Maxillofacial Unit, Linköping University Hospital, 581 85 Linköping, Sweden
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20
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Liu J, Kang H, Lu J, Dai Y, Wang F. Experimental study of the effects of hypoxia simulator on osteointegration of titanium prosthesis in osteoporotic rats. BMC Musculoskelet Disord 2021; 22:944. [PMID: 34763682 PMCID: PMC8588664 DOI: 10.1186/s12891-021-04777-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 10/06/2021] [Indexed: 12/27/2022] Open
Abstract
Background Poor osseointegration is the key reason for implant failure after arthroplasty,whether under osteoporotic or normal bone conditions. To date, osseointegration remains a major challenge. Recent studies have shown that deferoxamine (DFO) can accelerate osteogenesis by activating the hypoxia signaling pathway. The purpose of this study was to test the following hypothesis: after knee replacement, intra-articular injection of DFO will promote osteogenesis and osseointegration with a 3D printed titanium prosthesis in the bones of osteoporotic rats. Materials and methods Ninety female Sprague–Dawley rats were used for the experiment. Ten rats were used to confirm the successful establishment of the osteoporosis model: five rats in the sham operation group and five rats in the ovariectomy group. After ovariectomy and knee arthroplasty were performed, the remaining 80 rats were randomly divided into DFO and control groups (n = 40 per group). The two groups were treated by intraarticular injection of DFO and saline respectively. After 2 weeks, polymerase chain reaction (PCR) and immunohistochemistry were used to evaluate the levels of HIF-1a, VEGF, and CD31. HIF-1a and VEGF have been shown to promote angiogenesis and bone regeneration, and CD31 is an important marker of angiogenesis. After 12 weeks, the specimens were examined by micro-computed tomography (micro-CT), biomechanics, and histopathology to evaluate osteogenesis and osseointegration. Results The results of PCR showed that the mRNA levels of VEGF and CD31 in the DFO group were significantly higher than those in the control group. The immunohistochemistry results indicated that positive cell expression of HIF-1a, VEGF, and CD31 in the DFO group was also higher. Compared with the control group, the micro-CT parameters of BMD, BV/TV, TB. N, and TB. Th were significantly higher. The maximal pull-out force and the bone-to-implant contact value were also higher. Conclusions The local administration of DFO, which is used to activate the HIF-1a signaling pathway, can promote osteogenesis and osseointegration with a prosthesis in osteoporotic bone.
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Affiliation(s)
- Jiangfeng Liu
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Ziqiang Road 139, Shijiazhuang, 050051, China
| | - Huijun Kang
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Ziqiang Road 139, Shijiazhuang, 050051, China
| | - Jiangfeng Lu
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Ziqiang Road 139, Shijiazhuang, 050051, China
| | - Yike Dai
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Ziqiang Road 139, Shijiazhuang, 050051, China
| | - Fei Wang
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Ziqiang Road 139, Shijiazhuang, 050051, China.
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21
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Omar O, Abuohashish HM, Alkhamis T, Al-Qarni F. Habitual caffeine intake affects implant osseointegration: An in vivo study. J Periodontal Res 2021; 56:1070-1078. [PMID: 34363706 DOI: 10.1111/jre.12920] [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: 07/04/2021] [Accepted: 07/27/2021] [Indexed: 01/12/2023]
Abstract
OBJECTIVES This study aimed to evaluate the effect of habitual caffeine (CAF) intake on stability, bone regeneration, and expression of bone markers at the bone-implant interface. BACKGROUND Studies show that habitual CAF alters bone health and remodeling. Yet, there is no information regarding CAF effects on osseointegration of bone-anchored implants. METHODS Wistar rats were divided into two groups: one received tap drinking water alone (control) and the other received tap water with CAF (300 mg/L). After 12 weeks, their tibiae received screw-shaped titanium implants. After another 12 weeks, CAF (n = 5) and control (n = 5) animals were sacrificed and the implant stability was evaluated using a removal torque (RTQ) device. Thereafter, the implants were processed for gene expression analysis, and the implantation sites were harvested for histology. Implants with the surrounding bone were dissected en bloc and subjected to micro-computed tomography (micro-CT). RESULTS The results showed that implants in the CAF group had an 87% significant increase in RTQ compared to the control. Further, micro-CT revealed a higher proportion of mineralized bone filling the implant threads in the CAF group. The molecular analysis indicated higher expression of bone formation (ALP), remodeling (CatK), and vascularization (VEGF) genes in implant-adherent cells in the CAF group. Histology suggested increased vascularity in the tissue surrounding the implant in the CAF group. CONCLUSIONS Within the limit of this study, it is concluded that habitual CAF intake conveys a positive, promoting effect on long-term osseointegration. Clinical studies are worth pursuing to verify this experimental observation.
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Affiliation(s)
- Omar Omar
- Department of Biomedical Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Hatem M Abuohashish
- Department of Biomedical Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Taleb Alkhamis
- Animal House, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Faisal Al-Qarni
- Department of Substitutive Dental Science, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
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22
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The Role of Epigenetic Functionalization of Implants and Biomaterials in Osseointegration and Bone Regeneration-A Review. Molecules 2020; 25:molecules25245879. [PMID: 33322654 PMCID: PMC7763898 DOI: 10.3390/molecules25245879] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/03/2020] [Accepted: 12/09/2020] [Indexed: 02/07/2023] Open
Abstract
The contribution of epigenetic mechanisms as a potential treatment model has been observed in cancer and autoimmune/inflammatory diseases. This review aims to put forward the epigenetic mechanisms as a promising strategy in implant surface functionalization and modification of biomaterials, to promote better osseointegration and bone regeneration, and could be applicable for alveolar bone regeneration and osseointegration in the future. Materials and Methods: Electronic and manual searches of the literature in PubMed, MEDLINE, and EMBASE were conducted, using a specific search strategy limited to publications in the last 5 years to identify preclinical studies in order to address the following focused questions: (i) Which, if any, are the epigenetic mechanisms used to functionalize implant surfaces to achieve better osseointegration? (ii) Which, if any, are the epigenetic mechanisms used to functionalize biomaterials to achieve better tissue regeneration? Findings from several studies have emphasized the role of miRNAs in functionalizing implants surfaces and biomaterials to promote osseointegration and bone regeneration, respectively. However, there are scarce data on the role of DNA methylation and histone modifications for these specific applications, despite being commonly applied in cancer research. Studies over the past few years have demonstrated that biomaterials are immunomodulatory rather than inert materials. In this context, epigenetics can act as next generation of advanced treatment tools for future regenerative techniques. Yet, there is a need to evaluate the efficacy/cost effectiveness of these techniques in comparison to current standards of care.
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23
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Anatase Forming Treatment without Surface Morphological Alteration of Dental Implant. MATERIALS 2020; 13:ma13225280. [PMID: 33266359 PMCID: PMC7700421 DOI: 10.3390/ma13225280] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/19/2020] [Accepted: 11/20/2020] [Indexed: 12/14/2022]
Abstract
The osseointegration of titanium implants is allowed by the TiO2 layer that covers the implants. Titania can exist in amorphous form or in three different crystalline conformations: anatase, rutile and brookite. Few studies have characterized TiO2 covering the surface of dental implants from the crystalline point of view. The aim of the present study was to characterize the evolution of the TiO2 layer following different surface treatments from a crystallographic point of view. Commercially pure titanium and Ti-6Al-4V implants subjected to different surface treatments were analyzed by Raman spectroscopy to evaluate the crystalline conformation of titania. The surface treatments evaluated were: machining, sandblasting, sandblasting and etching and sandblasting, etching and anodization. The anodizing treatment evaluated in this study allowed to obtain anatase on commercially pure titanium implants without altering the morphological characteristics of the surface.
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24
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Krishnadath DC, Ruan W, Yang H, Liu J, Zhou X. Influence of low modulus Co-Zr alloys surface modification on protein adsorption and MC3T3-E1, NIH3T3 and RAW264.7 cell behaviour. J Biomater Appl 2020; 35:1061-1070. [PMID: 33135572 DOI: 10.1177/0885328220969558] [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] [Indexed: 11/17/2022]
Abstract
Three types of Co-xZr (x = 5, 7.5, and 10 wt.%) were treated with hydroxyapatite (HA) and used as an object to investigate the effect of HA coating on the surface and biocompatibility of Co-xZr alloys. And the protein adsorption and the subsequent biological behaviour of osteoblast, fibroblast and macrophages were also investigated. The surface microstructure and wettability were assessed by scanning electron microscopy (SEM) and static angle profilometer. To evaluate the biocompatibility of Co-xZr and Co-xZr-HA, we quantified plasma proteins adsorption by bicinchoninic acid assay (BCA), cytotoxicity and cell proliferation by cell counting kit-8 (CCK-8) and scanning electron microscopy (SEM). The results indicated that Co-xZr-HA alloy surfaces were more hydrophilic and had higher affinity to plasma proteins. Higher protein concentrations were found adsorbed onto Co-7.5Zr-HA and Co-10Zr-HA alloys. Cytotoxicity analysis indicated that HA coating improved the biocompatibility of Co-xZr alloys. Furthermore, the comparable results of co-incubation of Co-xZr-HA alloys with cells reveal cellular attachments to HA surfaces. HA was successfully formed on Co-xZr alloys and modified the surface structure and biocompatibility of the alloys. Co-10Zr-HA and Co-7.5Zr-HA had the most favourable properties and cytocompatibility, and therefore can be potentially used for dental implants.
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Affiliation(s)
- Dewi Chrystal Krishnadath
- Department of Prosthodontics, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, PR China
| | - Wei Ruan
- Department of Anesthesiology, Anesthesia Research Institute, The Second Xiangya Hospital, Central South University, Changsha, PR China
| | - Hailin Yang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, PR China
| | - Jue Liu
- Hunan Province Key Laboratory of Engineering Rheology, Central South University of Forestry and Technology, Changsha, PR China
| | - Xiongwen Zhou
- Department of Prosthodontics, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, PR China
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In situ bone regeneration of large cranial defects using synthetic ceramic implants with a tailored composition and design. Proc Natl Acad Sci U S A 2020; 117:26660-26671. [PMID: 33046631 PMCID: PMC7604495 DOI: 10.1073/pnas.2007635117] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Large cranial reconstructions are increasingly performed worldwide and still represent a substantial clinical challenge. The gold standard, autologous bone, has limited availability and high donor-site morbidity. Current alloplastic materials are associated with high complication and failure rates. This study shows the capacity of a customized, purely synthetic, 3D-manufactured bioceramic implant to regenerate and restore large cranial defects with mature, well-vascularized bone, with a morphology, ultrastructure, and composition similar to those of native skull bone. This approach triggers the regenerative potential of host tissue by tailoring the implant composition and design. The regeneration of large defects using purely synthetic material without adjunct cell therapy or growth factors represents a major advancement for rehabilitating patients in need of large cranial reconstructions. The repair of large cranial defects with bone is a major clinical challenge that necessitates novel materials and engineering solutions. Three-dimensionally (3D) printed bioceramic (BioCer) implants consisting of additively manufactured titanium frames enveloped with CaP BioCer or titanium control implants with similar designs were implanted in the ovine skull and at s.c. sites and retrieved after 12 and 3 mo, respectively. Samples were collected for morphological, ultrastructural, and compositional analyses using histology, electron microscopy, and Raman spectroscopy. Here, we show that BioCer implants provide osteoinductive and microarchitectural cues that promote in situ bone regeneration at locations distant from existing host bone, whereas bone regeneration with inert titanium implants was confined to ingrowth from the defect boundaries. The BioCer implant promoted bone regeneration at nonosseous sites, and bone bonding to the implant was demonstrated at the ultrastructural level. BioCer transformed to carbonated apatite in vivo, and the regenerated bone displayed a molecular composition indistinguishable from that of native bone. Proof-of-principle that this approach may represent a shift from mere reconstruction to in situ regeneration was provided by a retrieved human specimen, showing that the BioCer was transformed into well-vascularized osteonal bone, with a morphology, ultrastructure, and composition similar to those of native human skull bone.
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26
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Wang X, Thomsen P. Mesenchymal stem cell-derived small extracellular vesicles and bone regeneration. Basic Clin Pharmacol Toxicol 2020; 128:18-36. [PMID: 32780530 PMCID: PMC7820981 DOI: 10.1111/bcpt.13478] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 08/03/2020] [Accepted: 08/06/2020] [Indexed: 12/20/2022]
Abstract
Mesenchymal stem cells (MSCs) and MSC‐derived small extracellular vesicles (sEVs) are promising candidates for cell‐based and cell‐free regenerative medicine, respectively. By virtue of their multiple lineage differentiation capacity, MSCs have been implicated as an ideal tool for bone and cartilage regeneration. However, later observations attributed such regenerative effects to MSC‐secreted paracrine factors. Exosomes, endosomal originated sEVs carrying lipid, protein and nucleic acid cargoes, were identified as components of the MSC secretome and propagated the key regenerative and immunoregulatory characteristics of parental MSCs. Here, exosome biogenesis, the molecular composition of exosomes, sEV‐cell interactions and the effects on key bone homeostasis cells are reviewed. MSC‐derived sEVs show to promote neovascularization and bone and cartilage regeneration in preclinical disease models. The mechanisms include the transfer of molecules, including microRNAs, mRNAs and proteins, to other key cells. MSC‐derived sEVs are interesting candidates as biopharmaceuticals for drug delivery and for the engineering of biologically functionalized materials. Although major exploratory efforts have been made for therapeutic development, the secretion, distribution and biological effects of MSC‐derived sEVs in bone and cartilage regeneration are not fully understood. Moreover, techniques for high‐yield production, purity and storage need to be optimized before effective and safe MSC‐derived sEVs therapies are realized.
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Affiliation(s)
- Xiaoqin Wang
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Peter Thomsen
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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27
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Barrak FN, Li S, Muntane AM, Jones JR. Particle release from implantoplasty of dental implants and impact on cells. Int J Implant Dent 2020; 6:50. [PMID: 32918144 PMCID: PMC7486360 DOI: 10.1186/s40729-020-00247-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 07/29/2020] [Indexed: 01/01/2023] Open
Abstract
Background With increasing numbers of dental implants placed annually, complications such as peri-implantitis and the subsequent periprosthetic osteolysis are becoming a major concern. Implantoplasty, a commonly used treatment of peri-implantitis, aims to remove plaque from exposed implants and reduce future microbial adhesion and colonisation by mechanically modifying the implant surface topography, delaying re-infection/colonisation of the site. This in vitro study aims to investigate the release of particles from dental implants and their effects on human gingival fibroblasts (HGFs), following an in vitro mock implantoplasty procedure with a diamond burr. Materials and methods Commercially available implants made from grade 4 (commercially pure, CP) titanium (G4) and grade 5 Ti-6Al-4 V titanium (G5) alloy implants were investigated. Implant particle compositions were quantified by inductively coupled plasma optical emission spectrometer (ICP-OES) following acid digestion. HGFs were cultured in presence of implant particles, and viability was determined using a metabolic activity assay. Results Microparticles and nanoparticles were released from both G4 and G5 implants following the mock implantoplasty procedure. A small amount of vanadium ions were released from G5 particles following immersion in both simulated body fluid and cell culture medium, resulting in significantly reduced viability of HGFs after 10 days of culture. Conclusion There is a need for careful evaluation of the materials used in dental implants and the potential risks of the individual constituents of any alloy. The potential cytotoxicity of G5 titanium alloy particles should be considered when choosing a device for dental implants. Additionally, regardless of implant material, the implantoplasty procedure can release nanometre-sized particles, the full systemic effect of which is not fully understood. As such, authors do not recommend implantoplasty for the treatment of peri-implantitis.
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Affiliation(s)
- Fadi N Barrak
- Department of Materials, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Siwei Li
- Department of Materials, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Albert M Muntane
- School of Dentistry, University of Central Lancashire, Preston, PR1 2HE, UK
| | - Julian R Jones
- Department of Materials, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK.
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28
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Thomé G, Sandgren R, Bernardes S, Trojan L, Warfving N, Bellón B, Pippenger BE. Osseointegration of a novel injection molded 2-piece ceramic dental implant: a study in minipigs. Clin Oral Investig 2020; 25:603-615. [PMID: 32914271 DOI: 10.1007/s00784-020-03513-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 08/06/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVES This study compared the osseointegrative potential of a novel injection molded zirconia dental implant (Neodent Zi ceramic implant, test) and a commercially available titanium implant (Neodent Alvim implant, control) in terms of histomorphometrically derived bone-to-implant contact (BIC), first bone-to-implant contact (fBIC), and the ratio of bone area to total area (BATA) around the implant. MATERIALS AND METHODS A total of 36 implants, 18 per individual test device, were implanted in a split-mouth arrangement in either side of the edentulous and fully healed mandible of 6 minipigs. Histomorphometric analysis of BIC, fBIC, and BATA were performed 8 weeks post implantation and subjected to statistical non-inferiority testing. Surface characteristics of both implant types were compared in terms of contact angle, surface topography, and elemental composition. RESULTS BIC, fBIC, and coronal BATA values of test and control implants were statistically comparable and non-inferior. BIC values of 77.8 ± 6.9% vs. 80.7 ± 6.9% (p = 0.095) were measured for the test and control groups. fBIC lingual values were - 238 ± 328 μm compared with - 414 ± 511 μm (p = 0.121) while buccal values were - 429 ± 648 μm and - 588 ± 550 μm (p = 0.230) for the test and control devices, respectively. BATA in the apical segment was significantly higher in the test group compared with the control group (67.2 ± 11.8% vs. 59.1 ± 11.4%) (p = 0.0103). Surface topographies of both implant types were comparable. Surface chemical analysis indicated the presence of carbonaceous adsorbates which correlated with a comparable and predominantly hydrophobic character of the implants. CONCLUSION The results demonstrate that the investigated zirconia implants, when compared with a commercially available titanium implant, show equivalent and non-inferior bone integration, bone formation, and alveolar bone level maintenance. This qualifies the investigated zirconia implant as a potential candidate for clinical development. CLINICAL RELEVANCE This study investigated the osseointegration of a novel zirconia 2-piece dental implant prototype intended for clinical development. With the aim of translating this prototype into clinical development preclinical models, procedures and materials within this study have been selected as close to clinical practice and human physiological conditions as possible.
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Affiliation(s)
| | - Rebecca Sandgren
- Biomedical Center, Faculty of Medicine, Lund University, Lund, Sweden
| | | | | | | | - Benjamin Bellón
- Department of Preclinical and Translational Research, Institut Straumann AG, Peter Merian-Weg 12, 4052, Basel, Switzerland.,Department of Periodontology, Faculty of Dentistry, University of Zurich, Zurich, Switzerland
| | - Benjamin E Pippenger
- Department of Preclinical and Translational Research, Institut Straumann AG, Peter Merian-Weg 12, 4052, Basel, Switzerland. .,Department of Periodontology, Faculty of Dentistry, University of Zurich, Zurich, Switzerland.
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29
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Kunrath MF, Vargas ALM, Sesterheim P, Teixeira ER, Hubler R. Extension of hydrophilicity stability by reactive plasma treatment and wet storage on TiO 2 nanotube surfaces for biomedical implant applications. J R Soc Interface 2020; 17:20200650. [PMID: 32993437 PMCID: PMC7536041 DOI: 10.1098/rsif.2020.0650] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 09/01/2020] [Indexed: 12/14/2022] Open
Abstract
Micro and nanoscale changes allow the optimization of physico-chemical properties of titanium implant surfaces. Recently UV and plasma treatments have allowed surface hydrophilicity to take increased prominence; however, this beneficial effect is short-lived. The aim of this study is to investigate methodologies post-anodizing treatment to generate and maintain high surface hydrophilicity along with high biocompatibility. Anodized surfaces were characterized regarding physical-chemical properties. Then, surface wettability with nanomorphology was evaluated at different times and with distinct post-treatments: as deposited, with a reactive plasma and UV-light post-treatment, stored in air or deionized (DI) water. Adhesion, alkaline phosphatase (ALP) activity and bone cell viability tests were executed after the incremental treatments. The anodizing process generated a surface with TiO2 nanotubes morphology and micro-roughness. Plasma-treated surfaces resulted in the most hydrophilic samples and this property was maintained for a longer period when those were stored in DI water (angle variation of 7° to 12° in 21 days). Furthermore, plasma post-treatment changed the titanium surface crystalline phase from amorphous to anatase. Anodized surfaces modified by reactive plasma and stored in DI water suggest better hydrophilicity stability, biocompatibility, ALP activity and achievement of crystalline phase alteration, indicating future potential use on biomedical implants.
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Affiliation(s)
- Marcel F. Kunrath
- Dentistry Department, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, P.O. Box 6681, 90619-900, Porto Alegre - RS, Brazil
- Materials and Nanoscience Laboratory, Pontifical Catholic University of Rio Grande do Sul (PUCRS), P.O. Box 1429, 90619-900, Porto Alegre - RS, Brazil
| | - André L. M. Vargas
- Materials and Nanoscience Laboratory, Pontifical Catholic University of Rio Grande do Sul (PUCRS), P.O. Box 1429, 90619-900, Porto Alegre - RS, Brazil
| | - Patrícia Sesterheim
- Institute of Cardiology, R. Domingos Crescencio, P.O. Box 132, 90650-090, Porto Alegre - RS, Brazil
| | - Eduardo R. Teixeira
- Dentistry Department, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, P.O. Box 6681, 90619-900, Porto Alegre - RS, Brazil
| | - Roberto Hubler
- Materials and Nanoscience Laboratory, Pontifical Catholic University of Rio Grande do Sul (PUCRS), P.O. Box 1429, 90619-900, Porto Alegre - RS, Brazil
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Ścibior A, Pietrzyk Ł, Plewa Z, Skiba A. Vanadium: Risks and possible benefits in the light of a comprehensive overview of its pharmacotoxicological mechanisms and multi-applications with a summary of further research trends. J Trace Elem Med Biol 2020; 61:126508. [PMID: 32305626 PMCID: PMC7152879 DOI: 10.1016/j.jtemb.2020.126508] [Citation(s) in RCA: 106] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 02/25/2020] [Accepted: 03/19/2020] [Indexed: 01/21/2023]
Abstract
BACKGROUND Vanadium (V) is an element with a wide range of effects on the mammalian organism. The ability of this metal to form organometallic compounds has contributed to the increase in the number of studies on the multidirectional biological activity of its various organic complexes in view of their application in medicine. OBJECTIVE This review aims at summarizing the current state of knowledge of the pharmacological potential of V and the mechanisms underlying its anti-viral, anti-bacterial, anti-parasitic, anti-fungal, anti-cancer, anti-diabetic, anti-hypercholesterolemic, cardioprotective, and neuroprotective activity as well as the mechanisms of appetite regulation related to the possibility of using this element in the treatment of obesity. The toxicological potential of V and the mechanisms of its toxic action, which have not been sufficiently recognized yet, as well as key information about the essentiality of this metal, its physiological role, and metabolism with certain aspects on the timeline is collected as well. The report also aims to review the use of V in the implantology and industrial sectors emphasizing the human health hazard as well as collect data on the directions of further research on V and its interactions with Mg along with their character. RESULTS AND CONCLUSIONS Multidirectional studies on V have shown that further analyses are still required for this element to be used as a metallodrug in the fight against certain life-threatening diseases. Studies on interactions of V with Mg, which showed that both elements are able to modulate the response in an interactive manner are needed as well, as the results of such investigations may help not only in recognizing new markers of V toxicity and clarify the underlying interactive mechanism between them, thus improving the medical application of the metals against modern-age diseases, but also they may help in development of principles of effective protection of humans against environmental/occupational V exposure.
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Key Words
- 3-HMG-CoA, 3-hydroxy-3-methyl-glutaryl-CoA
- AIDS, acquired immune deficiency syndrome
- ALB, albumin
- ALP, alkaline phosphatase
- AS, antioxidant status
- Akt, protein kinase B (PKB)
- AmD, Assoc American Dietetic Association
- Anti-B, anti-bacterial
- Anti-C, anti-cancer
- Anti-D, anti-diabetic
- Anti-F, anti-fungal
- Anti-O, anti-obesity
- Anti-P, anti-parasitic
- Anti-V, anti-viral
- Anti−HC, anti-hypercholesterolemic
- ApoA-I, apolipoprotein A
- ApoB, apolipoprotein B
- B, bone
- BCOV, bis(curcumino)oxavanadyl
- BEOV, bis(ethylmaltolato)oxovanadium
- BMOV, bis(maltolato)oxavanadium(IV)
- Bim, Blc-2 interacting mediator of cell death
- Biological role
- BrOP, bromoperoxidase
- C, cholesterol
- C/EBPα, CCAAT-enhancer-binding protein α
- CD4, CD4 receptor
- CH, cerebral hemisphere
- CHO-K1, Chinese hamster ovary cells
- CXCR-4, CXCR-4 chemokine co-receptor
- Cardio-P, cardioprotective
- Citrate-T, citrate transporter
- CoA, coenzyme A
- Cyt c, cytochrome c
- DM, diabetes mellitus
- ELI, extra low interstitial
- ERK, extracellular regulated kinase
- FHR, fructose hypertensive rats
- FKHR/FKHR1/AFX, class O members of the forkhead transcription factor family
- FLIP, FLICE-inhibitory protein
- FOXOs, forkhead box class O family member proteins
- FPP, farnesyl-pyrophosphate
- FasL, Fas ligand, FER: ferritin
- GI, gastrointestinal
- GLU, glucose
- GLUT-4, glucose transporter type 4
- GPP, geranyl-pyrophosphate
- GPT, glutamate-pyruvate transaminase
- GR, glutathione reductase
- GSH, reduced glutathione
- GSSG, disulfide glutathione
- HDL, high-density lipoproteins
- HDL-C, HDL cholesterol
- HIV, human immunodeficiency virus
- HMMF, high molecular mass fraction
- HOMA-IR, insulin resistance index
- Hb, hemoglobin
- HbF, hemoglobin fraction
- Hyper-LEP, hyperleptynemia
- IDDM, insulin-dependent diabetes mellitus
- IGF-IR, insulin-like growth factor receptor
- IL, interleukin
- INS, insulin
- INS-R, insulin resistance
- INS-S, insulin sensitivity
- IPP, isopentenyl-5-pyrophosphate
- IRS, insulin receptor tyrosine kinase substrate
- IgG, immunoglobulin G
- Industrial importance
- Interactions
- JAK2, Janus kinase 2
- K, kidney
- L, liver
- L-AA, L-ascorbic acid
- LDL, low-density lipoproteins
- LDL-C, LDL cholesterol
- LEP, leptin
- LEP-R, leptin resistance
- LEP-S, leptin sensitivity
- LEPS, the concentration of leptin in the serum
- LMMF, low molecular mass fraction
- LPL, lipoprotein lipase
- LPO, lipid peroxidation
- Lactate-T, lactate transporter
- M, mitochondrion
- MEK, ERK kinase activator
- MRC, mitochondrial respiratory chain
- NAC, N-acetylcysteine
- NEP, neutral endopeptidase
- NIDDM, noninsulin-dependent diabetes mellitus
- NO, nitric oxide
- NPY, neuropeptide Y
- NaVO3, sodium metavanadate
- Neuro-P, neuroprotective
- OXPHOS, oxidative phosphorylation
- Organic-AT, organic anion transporter
- Over-W, over-weight
- P, plasma
- PANC-1, pancreatic ductal adenocarcinoma cells
- PARP, poly (ADP-ribose) polymerase
- PLGA, (Poly)Lactide-co-Glycolide copolymer
- PO43−, phosphate ion
- PPARγ, peroxisome-activated receptor γ
- PTK, tyrosine protein kinase
- PTP, protein tyrosine phosphatase
- PTP-1B, protein tyrosine phosphatase 1B
- Pharmacological activity
- Pi3K, phosphoinositide 3-kinase (phosphatidylinositol 3-kinase)
- RBC, erythrocytes
- ROS, reactive oxygen species
- RT, reverse transcriptase
- SARS, severe acute respiratory syndrome
- SAcP, acid phosphatase secreted by Leshmania
- SC-Ti-6Al-4V, surface-coated Ti-6Al-4V
- SHR, spontaneously hypertensive rats
- SOD, superoxide dismutase
- STAT3, signal transducer/activator of transcription 3
- Sa, mean roughness
- Sq, root mean square roughness
- Sz, ten-point height
- TC, total cholesterol
- TG, triglycerides
- TS, transferrin saturation
- Tf, transferrin
- TfF, transferrin fraction
- TiO2, nHA:Ag-Ti-6Al-4V: titanium oxide-based coating containing hydroxyapatite nanoparticle and silver particles
- Top-IB, IB type topoisomerase
- Toxicological potential
- V, vanadium
- V-BrPO, vanadium bromoperoxidase
- V-DLC, diamond-like layer with vanadium
- V5+/V4+, pentavalent/tetravalent vanadium
- VO2+, vanadyl cation
- VO2+-FER, vanadyl-ferritin complex
- VO4-/VO3-, vanadate anion
- VO43-, vanadate ion
- VS, vanadyl sulfate
- Vanadium
- WB, whole blood
- ZDF rats, Zucker diabetic fatty rats
- ZF rats, Zucker fatty rats
- breakD, breakdown
- eNOS, endothelial nitric oxide synthase
- mo, months
- n-HA, nano-hydroxyapatite
- pRb, retinoblastoma protein
- wk, weeks
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Affiliation(s)
- Agnieszka Ścibior
- Laboratory of Oxidative Stress, Centre for Interdisciplinary Research, The John Paull II Catholic University of Lublin, Poland
| | - Łukasz Pietrzyk
- Laboratory of Oxidative Stress, Centre for Interdisciplinary Research, The John Paull II Catholic University of Lublin, Poland
- Department of Didactics and Medical Simulation, Chair of Anatomy, Medical University of Lublin, Poland
| | - Zbigniew Plewa
- Department of General, Oncological, and Minimally Invasive Surgery, 1 Military Clinical Hospital with the Outpatient Clinic in Lublin, Poland
| | - Andrzej Skiba
- Military Clinical Hospital with the Outpatient Clinic in Lublin, Poland
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Fenelon T, Bakr MM, Walsh LJ, George R. Effects of Lasers and Their Delivery Characteristics on Machined and Micro-Roughened Titanium Dental Implant Surfaces. Bioengineering (Basel) 2020; 7:bioengineering7030093. [PMID: 32796620 PMCID: PMC7552764 DOI: 10.3390/bioengineering7030093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/23/2020] [Accepted: 08/05/2020] [Indexed: 11/30/2022] Open
Abstract
The aim of the study was to investigate the effects of neodymium: yttrium aluminium garnet (Nd:YAG) (1064 nm) and erbium: yttrium aluminium garnet (Er:YAG) (2940 nm) laser energy on titanium when delivered with conventional optics (focusing handpieces or plain ended optical fibres) or with a conical tip. Machined and micro-roughened implant discs were subjected to laser irradiation under a variety of energy settings either dry (without water) or wet (with water). Samples were scanned using a 3D non-contact laser profilometer and analysed for surface roughness, volume of peaks and the maximum diameter of the ablated area. Conical tip designs when used with both lasers showed no surface effect at any power setting on both machined and micro-roughened implant surfaces, regardless of the irrigation condition. When used with conventional delivery systems, laser effects on titanium were dose related, and were more profound with the Nd:YAG than with the Er:YAG laser. High laser pulse energies caused surface fusion which reduced the roughness of micro-roughened titanium surfaces. Likewise, repeated pulses and higher power densities also caused greater surface modifications. The presence of water reduced the influence of laser irradiation on titanium. It may be concluded that conical fibres can reduce unwanted surface modification, and this may be relevant to clinical protocols for debridement or disinfection of titanium dental implants.
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Affiliation(s)
- Thomas Fenelon
- School of Dentistry and Oral Health, Queensland, Griffith University, Queensland 4215, Australia; (T.F.); (M.M.B.)
| | - Mahmoud M. Bakr
- School of Dentistry and Oral Health, Queensland, Griffith University, Queensland 4215, Australia; (T.F.); (M.M.B.)
| | - Laurence J. Walsh
- School of Dentistry, The University of Queensland, Queensland 4006, Australia;
| | - Roy George
- School of Dentistry and Oral Health, Queensland, Griffith University, Queensland 4215, Australia; (T.F.); (M.M.B.)
- Correspondence: ; Tel.: +61-0756780751
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Protruding Nanostructured Surfaces for Antimicrobial and Osteogenic Titanium Implants. COATINGS 2020. [DOI: 10.3390/coatings10080756] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Protruding nanostructured surfaces have gained increasing interest due to their unique wetting behaviours and more recently their antimicrobial and osteogenic properties. Rapid development in nanofabrication techniques that offer high throughput and versatility on titanium substrate open up the possibility for better orthopaedic and dental implants that deter bacterial colonisation while promoting osteointegration. In this review we present a brief overview of current problems associated with bacterial infection of titanium implants and of efforts to fabricate titanium implants that have both bactericidal and osteogenic properties. All of the proposed mechano-bactericidal mechanisms of protruding nanostructured surfaces are then considered so as to explore the potential advantages and disadvantages of adopting such novel technologies for use in future implant applications. Different nanofabrication methods that can be utilised to fabricate such nanostructured surfaces on titanium substrate are briefly discussed.
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López-Valverde N, Flores-Fraile J, Ramírez JM, Macedo de Sousa B, Herrero-Hernández S, López-Valverde A. Bioactive Surfaces vs. Conventional Surfaces in Titanium Dental Implants: A Comparative Systematic Review. J Clin Med 2020; 9:jcm9072047. [PMID: 32610687 PMCID: PMC7408888 DOI: 10.3390/jcm9072047] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/17/2020] [Accepted: 06/21/2020] [Indexed: 12/15/2022] Open
Abstract
Animal studies and the scarce clinical trials available that have been conducted suggest that bioactive surfaces on dental implants could improve the osseointegration of such implants. The purpose of this systematic review was to compare the effectiveness of osseointegration of titanium (Ti) dental implants using bioactive surfaces with that of Ti implants using conventional surfaces such as sandblasted large-grit acid-etched (SLA) or similar surfaces. Applying the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) statement, the MEDLINE, PubMed Central and Web of Science databases were searched for scientific articles in April 2020. The keywords used were “dental implants”, “bioactive surfaces”, “biofunctionalized surfaces”, and “osseointegration”, according to the question: “Do bioactive dental implant surfaces have greater osseointegration capacity compared with conventional implant surfaces?” Risk of bias was assessed using the Cochrane Collaboration tool. 128 studies were identified, of which only 30 met the inclusion criteria: 3 clinical trials and 27 animal studies. The average STROBE (STrengthening the Reporting of OBservational studies in Epidemiology) and ARRIVE (Animal Research: Reporting of In Vivo Experiments) scores were 15.13 ± 2.08 and 17.7±1.4, respectively. Implant stability quotient (ISQ) was reported in 3 studies; removal torque test (RTT)—in 1 study; intraoral periapical X-ray and microcomputed tomography radiological evaluation (RE)—in 4 studies; shear force (SF)—in 1 study; bone-to-implant contact (BIC)—in 12 studies; and BIC and bone area (BA) jointly—in 5 studies. All animal studies reported better bone-to-implant contact surface for bioactive surfaces as compared to control implants with a statistical significance of p < 0.05. Regarding the bioactive surfaces investigated, the best results were yielded by the one where mechanical and chemical treatment methods of the Ti surfaces were combined. Hydroxyapatite (HA) and calcium–phosphate (Ca–Ph) were the most frequently used bioactive surfaces. According to the results of this systematic review, certain bioactive surfaces have a positive effect on osseointegration, although certain coating biomolecules seem to influence early peri-implant bone formation. Further and more in-depth research in this field is required to reduce the time needed for osseointegration of dental implants.
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Affiliation(s)
- Nansi López-Valverde
- Department of Surgery, University of Salamanca, Instituto de Investigación Biomédica de Salamanca (IBSAL), 37007 Salamanca, Spain; (N.L.-V.); (J.F.-F.); (S.H.-H.)
| | - Javier Flores-Fraile
- Department of Surgery, University of Salamanca, Instituto de Investigación Biomédica de Salamanca (IBSAL), 37007 Salamanca, Spain; (N.L.-V.); (J.F.-F.); (S.H.-H.)
| | - Juan Manuel Ramírez
- Department of Morphological Sciences, University of Cordoba, Avenida Menéndez Pidal s/n, 14071 Cordoba, Spain;
| | - Bruno Macedo de Sousa
- Institute for Occlusion and Orofacial Pain Faculty of Medicine, University of Coimbra, Polo I - Edifício Central Rua Larga, 3004-504 Coimbra, Portugal;
| | - Silvia Herrero-Hernández
- Department of Surgery, University of Salamanca, Instituto de Investigación Biomédica de Salamanca (IBSAL), 37007 Salamanca, Spain; (N.L.-V.); (J.F.-F.); (S.H.-H.)
| | - Antonio López-Valverde
- Department of Surgery, University of Salamanca, Instituto de Investigación Biomédica de Salamanca (IBSAL), 37007 Salamanca, Spain; (N.L.-V.); (J.F.-F.); (S.H.-H.)
- Correspondence:
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Abstract
Dental implants are frequently used to support fixed or removable dental prostheses to replace missing teeth. The clinical success of titanium dental implants is owed to the exceptional biocompatibility and osseointegration with the bone. Therefore, the enhanced therapeutic effectiveness of dental implants had always been preferred. Several concepts for implant coating and local drug delivery had been developed during the last decades. A drug is generally released by diffusion-controlled, solvent-controlled, and chemical controlled methods. Although a range of surface modifications and coatings (antimicrobial, bioactive, therapeutic drugs) have been explored for dental implants, it is still a long way from designing sophisticated therapeutic implant surfaces to achieve the specific needs of dental patients. The present article reviews various interdisciplinary aspects of surface coatings on dental implants from the perspectives of biomaterials, coatings, drug release, and related therapeutic effects. Additionally, the various types of implant coatings, localized drug release from coatings, and how released agents influence the bone–implant surface interface characteristics are discussed. This paper also highlights several strategies for local drug delivery and their limitations in dental implant coatings as some of these concepts are yet to be applied in clinical settings due to the specific requirements of individual patients.
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Wang W, Luo CJ, Huang J, Edirisinghe M. PEEK surface modification by fast ambient-temperature sulfonation for bone implant applications. J R Soc Interface 2020; 16:20180955. [PMID: 30836898 PMCID: PMC6451405 DOI: 10.1098/rsif.2018.0955] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
We develop a simple, fast and economical surface treatment under ambient temperature to improve the hydrophilicity and osteoconductivity of polyetheretherketone (PEEK) for bone implant applications. A major challenge in bone implants is the drastic difference in stiffness between traditional implant materials (such as titanium and stainless steel) and human bone. PEEK is biocompatible with an elastic modulus closely matching that of human bone, making it a highly attractive alternative. However, its bio-inert and poorly hydrophilic surface presents a serious challenge for osseointegration. Sulfonation can improve hydrophilicity and introduce bioactive sulfonate groups, but PEEK sulfonation has traditionally been applied for fuel cells, employing elevated temperatures and long reaction times to re-cast PEEK into sulfonated films. Little research has systematically studied PEEK surface modification by short reaction time (seconds) and ambient-temperature sulfonation for biomedical applications. Here, we investigate three ambient-temperature sulfonation treatments under varying reaction times (5–90 s) and evaluate the hydrophilicity and morphology of 15 modified PEEK surfaces. We establish an optimal treatment using 30 s H2SO4 followed by 20 s rinsing, and then 20 s immersion in NaOH followed by 20 s rinsing. This 30 s ambient-temperature sulfonation is found to be more effective than conventional plasma treatments and reduced PEEK water contact angle from 78° to 37°.
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Affiliation(s)
- Weigeng Wang
- Department of Mechanical Engineering, University College London , Torrington Place, London WC1E 7JE , UK
| | - C J Luo
- Department of Mechanical Engineering, University College London , Torrington Place, London WC1E 7JE , UK
| | - Jie Huang
- Department of Mechanical Engineering, University College London , Torrington Place, London WC1E 7JE , UK
| | - Mohan Edirisinghe
- Department of Mechanical Engineering, University College London , Torrington Place, London WC1E 7JE , UK
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36
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VEGF/VEGF-R/RUNX2 Upregulation in Human Periodontal Ligament Stem Cells Seeded on Dual Acid Etched Titanium Disk. MATERIALS 2020; 13:ma13030706. [PMID: 32033260 PMCID: PMC7040902 DOI: 10.3390/ma13030706] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 01/31/2020] [Accepted: 02/04/2020] [Indexed: 12/12/2022]
Abstract
In restorative dentistry, the main implants characteristic is the ability to promote the osseointegration process as the result of interaction between angiogenesis and osteogenesis events. On the other hand, implants cytocompatibility remains a necessary feature for the success of surgery. The purpose of the current study was to investigate the interaction between human periodontal stem cells and two different types of titanium surfaces, to verify their cytocompatibility and cell adhesion ability, and to detect osteogenic and angiogenic markers, trough cell viability assay (MTT), Confocal Laser Scanning Microscopy (CLSM), scanning electron microscopy (SEM), and gene expression (RT-PCR). The titanium surfaces, machined (CTRL) and dual acid etched (TEST), tested in culture with human periodontal ligament stem cells (hPDLSCs), were previously treated in two different ways, in order to evaluate the effects of CTRL and TEST and define the best implant surface. Furthermore, the average surface roughness (Ra) of both titanium surfaces, CTRL and TEST, has been assessed through atomic force microscopy (AFM). The vascular endothelial growth factor (VEGF) and Runt-related transcription factor 2 (RUNX2) expressions have been analyzed by RT-PCR, WB analysis, and confocal laser scanning microscopy. Data evidenced that the different morphology and topography of the TEST disk increased cell growth, cell adhesion, improved osteogenic and angiogenic events, as well osseointegration process. For this reason, the TEST surface was more biocompatible than the CTRL disk surface.
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Malhotra R, Han YM, Morin JLP, Luong-Van EK, Chew RJJ, Castro Neto AH, Nijhuis CA, Rosa V. Inhibiting Corrosion of Biomedical-Grade Ti-6Al-4V Alloys with Graphene Nanocoating. J Dent Res 2020; 99:285-292. [PMID: 31905311 DOI: 10.1177/0022034519897003] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The identification of metal ions and particles in the vicinity of failed implants has raised the concern that biomedical titanium alloys undergo corrosion in healthy and infected tissues. Various surface modifications and coatings have been investigated to prevent the deterioration and biocorrosion of titanium alloys but so far with limited success. Graphene is a cytocompatible atom-thick film made of carbon atoms. It has a very high surface area and can be deposited onto metal objects with complex shapes. As the carbon lattice has a very small pore size, graphene has promising impermeability capacity. Here, we show that graphene coating can effectively protect Ti-6Al-4V from corrosion. Graphene nanocoatings were produced on Ti-6Al-4V grade 5 and 23 discs and subjected to corrosive challenge (0.5M NaCl supplemented with 2-ppm fluoride, pH of 2.0) up to 30 d. The linear polarization resistance curves and electrochemical impedance spectroscopy analysis showed that the graphene-coated samples presented higher corrosion resistance and electrochemical stability at all time points. Moreover, the corrosion rate of the graphene-coated samples was very low and stable (~0.001 mm/y), whereas that of the uncoated controls increased up to 16 and 5 times for grade 5 and 23 (~0.091 mm/y) at the end point, respectively. The surface oxidation, degradation (e.g., crevice defects), and leaching of Ti, Al, and V ions observed in the uncoated controls were prevented by the graphene nanocoating. The Raman mappings confirmed that the graphene nanocoating presented high structural stability and resistance to mechanical stresses and chemical degradation, keeping >99% of coverage after corrosion challenge. Our findings open the avenues for the use of graphene as anticorrosion coatings for metal biomedical alloys and implantable devices.
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Affiliation(s)
- R Malhotra
- Faculty of Dentistry, National University of Singapore, Singapore
| | - Y M Han
- Department of Chemistry, National University of Singapore, Singapore
| | - J L P Morin
- Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, Singapore
| | - E K Luong-Van
- Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, Singapore
| | - R J J Chew
- Faculty of Dentistry, National University of Singapore, Singapore
| | - A H Castro Neto
- Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, Singapore.,Department of Materials Science and Engineering, National University of Singapore, Singapore
| | - C A Nijhuis
- Department of Chemistry, National University of Singapore, Singapore.,Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, Singapore.,NUSNNI-Nanocore, National University of Singapore, Singapore.,Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore
| | - V Rosa
- Faculty of Dentistry, National University of Singapore, Singapore.,Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, Singapore.,Department of Materials Science and Engineering, National University of Singapore, Singapore
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Biocompatible MoS2/PDA-RGD coating on titanium implant with antibacterial property via intrinsic ROS-independent oxidative stress and NIR irradiation. Biomaterials 2019; 217:119290. [DOI: 10.1016/j.biomaterials.2019.119290] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 06/09/2019] [Accepted: 06/17/2019] [Indexed: 12/30/2022]
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39
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Brunello G, Elsayed H, Biasetto L. Bioactive Glass and Silicate-Based Ceramic Coatings on Metallic Implants: Open Challenge or Outdated Topic? MATERIALS (BASEL, SWITZERLAND) 2019; 12:E2929. [PMID: 31510062 PMCID: PMC6766230 DOI: 10.3390/ma12182929] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 09/05/2019] [Accepted: 09/07/2019] [Indexed: 12/19/2022]
Abstract
The overall success and long-term life of the medical implants are decisively based on the convenient osseointegration at the hosting tissue-implant interface. Therefore, various surface modifications and different coating approaches have been utilized to the implants to enhance the bone formation and speed up the interaction with the surrounding hosting tissues, thereby enabling the successful fixation of implants. In this review, we will briefly present the main metallic implants and discuss their biocompatibility and osseointegration ability depending on their chemical and mechanical properties. In addition, as the main goal of this review, we explore the main properties of bioactive glasses and silica-based ceramics that are used as coating materials for both orthopedic and dental implants. The current review provides an overview of these bioactive coatings, with a particular emphasis on deposition methods, coating adhesion to the substrates and apatite formation ability tested by immersion in Simulated Body Fluid (SBF). In vitro and in vivo performances in terms of biocompatibility, biodegradability and improved osseointegration are examined as well.
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Affiliation(s)
- Giulia Brunello
- Department of Management and Engineering, University of Padova, Stradella San Nicola 3, 36100 Vicenza, Italy.
- Department of Neurosciences, Section of Dentistry, University of Padova, Via Giustiniani 2, 35128 Padova, Italy.
| | - Hamada Elsayed
- Department of Industrial Engineering, University of Padova, Via F. Marzolo 9, 35131 Padova, Italy.
- Ceramics Department, National Research Centre, El-Bohous Street, Cairo 12622, Egypt.
| | - Lisa Biasetto
- Department of Management and Engineering, University of Padova, Stradella San Nicola 3, 36100 Vicenza, Italy.
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40
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Steffi C, Shi Z, Kong CH, Chong SW, Wang D, Wang W. Use of Polyphenol Tannic Acid to Functionalize Titanium with Strontium for Enhancement of Osteoblast Differentiation and Reduction of Osteoclast Activity. Polymers (Basel) 2019; 11:E1256. [PMID: 31362449 PMCID: PMC6723407 DOI: 10.3390/polym11081256] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/18/2019] [Accepted: 07/25/2019] [Indexed: 12/22/2022] Open
Abstract
Implant anchorage remains a challenge, especially in porous osteoporotic bone with high osteoclast activity. The implant surface is modified with osteogenic molecules to stimulate osseointegration. Strontium (Sr) is known for its osteogenic and anti-osteoclastogenic effects. In this study, Sr was immobilized on a titanium (Ti) surface using bioinspired polyphenol tannic acid (pTAN) coating as an ad-layer (Ti-pTAN). Two separate coating techniques were employed for comparative analysis. In the first technique, Ti was coated with a tannic acid solution containing Sr (Ti-pTAN-1Stp). In the second method, Ti was first coated with pTAN, before being immersed in a SrCl2 solution to immobilize Sr on Ti-pTAN (Ti-pTAN-2Stp). Ti-pTAN-1Stp and Ti-pTAN-2Stp augmented the alkaline phosphatase activity, collagen secretion, osteocalcin production and calcium deposition of MC3T3-E1 cells as compared to those of Ti and Ti-pTAN. However, osteoclast differentiation of RAW 264.7, as studied by TRAP activity, total DNA, and multinucleated cell formation, were decreased on Ti-pTAN, Ti-pTAN-1Stp and Ti-pTAN-2Stp as compared to Ti. Of all the substrates, osteoclast activity on Ti-pTAN-2Stp was the lowest. Hence, an economical and simple coating technique using pTAN as an adlayer preserved the dual biological effects of Sr. These results indicate a promising new approach to tailoring the cellular responses of implant surfaces.
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Affiliation(s)
- Chris Steffi
- Department of Orthopaedic Surgery, National University of Singapore, NUHS Tower Block Level 11, 1E Kent Ridge Road, Singapore 119228, Singapore
| | - Zhilong Shi
- Department of Orthopaedic Surgery, National University of Singapore, NUHS Tower Block Level 11, 1E Kent Ridge Road, Singapore 119228, Singapore
| | - Chee Hoe Kong
- Department of Orthopaedic Surgery, National University of Singapore, NUHS Tower Block Level 11, 1E Kent Ridge Road, Singapore 119228, Singapore
| | - Sue Wee Chong
- Department of Orthopaedic Surgery, National University of Singapore, NUHS Tower Block Level 11, 1E Kent Ridge Road, Singapore 119228, Singapore
| | - Dong Wang
- Department of Orthopaedic Surgery, National University of Singapore, NUHS Tower Block Level 11, 1E Kent Ridge Road, Singapore 119228, Singapore
| | - Wilson Wang
- Department of Orthopaedic Surgery, National University of Singapore, NUHS Tower Block Level 11, 1E Kent Ridge Road, Singapore 119228, Singapore.
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Gao X, Fraulob M, Haïat G. Biomechanical behaviours of the bone-implant interface: a review. J R Soc Interface 2019; 16:20190259. [PMID: 31362615 PMCID: PMC6685012 DOI: 10.1098/rsif.2019.0259] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 07/01/2019] [Indexed: 01/09/2023] Open
Abstract
In recent decades, cementless implants have been widely used in clinical practice to replace missing organs, to replace damaged or missing bone tissue or to restore joint functionality. However, there remain risks of failure which may have dramatic consequences. The success of an implant depends on its stability, which is determined by the biomechanical properties of the bone-implant interface (BII). The aim of this review article is to provide more insight on the current state of the art concerning the evolution of the biomechanical properties of the BII as a function of the implant's environment. The main characteristics of the BII and the determinants of implant stability are first introduced. Then, the different mechanical methods that have been employed to derive the macroscopic properties of the BII will be described. The experimental multi-modality approaches used to determine the microscopic biomechanical properties of periprosthetic newly formed bone tissue are also reviewed. Eventually, the influence of the implant's properties, in terms of both surface properties and biomaterials, is investigated. A better understanding of the phenomena occurring at the BII will lead to (i) medical devices that help surgeons to determine an implant's stability and (ii) an improvement in the quality of implants.
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Affiliation(s)
- Xing Gao
- CNRS, Laboratoire Modélisation et Simulation Multi Echelle, UMR CNRS 8208, 61 avenue du Général de Gaulle, 94010 Créteil cedex, France
- Research Centre for Medical Robotics and Minimally Invasive Surgical Devices, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Manon Fraulob
- CNRS, Laboratoire Modélisation et Simulation Multi Echelle, UMR CNRS 8208, 61 avenue du Général de Gaulle, 94010 Créteil cedex, France
| | - Guillaume Haïat
- CNRS, Laboratoire Modélisation et Simulation Multi Echelle, UMR CNRS 8208, 61 avenue du Général de Gaulle, 94010 Créteil cedex, France
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42
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Hanawa T. Titanium-Tissue Interface Reaction and Its Control With Surface Treatment. Front Bioeng Biotechnol 2019; 7:170. [PMID: 31380361 PMCID: PMC6650641 DOI: 10.3389/fbioe.2019.00170] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 07/03/2019] [Indexed: 12/17/2022] Open
Abstract
Titanium (Ti) and its alloys are widely used for medical and dental implant devices-artificial joints, bone fixators, spinal fixators, dental implant, etc. -because they show excellent corrosion resistance and good hard-tissue compatibility (bone formation and bone bonding ability). Osseointegration is the first requirement of the interface structure between titanium and bone tissue. This concept of osseointegration was immediately spread to dental-materials researchers worldwide to show the advantages of titanium as an implant material compared with other metals. Since the concept of osseointegration was developed, the cause of osseointegration has been actively investigated. The surface chemical state, adsorption characteristics of protein, and bone tissue formation process have also been evaluated. To accelerate osseointegration, roughened and porous surfaces are effective. HA and TiO2 coatings prepared by plasma spray and an electrochemical technique, as well as alkalinization of the surface, are also effective to improve hard-tissue compatibility. Various immobilization techniques for biofunctional molecules have been developed for bone formation and prevention of platelet and bacteria adhesion. These techniques make it possible to apply Ti to a scaffold of tissue engineering. The elucidation of the mechanism of the excellent biocompatibility of Ti can provide a shorter way to develop optimal surfaces. This review should enhance the understanding of the properties and biocompatibility of Ti and highlight the significance of surface treatment.
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Affiliation(s)
- Takao Hanawa
- Department of Metallic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
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43
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Passariello C, Di Nardo D, Testarelli L. Inflammatory Periimplant Diseases and the Periodontal Connection Question. Eur J Dent 2019; 13:119-123. [PMID: 31234222 PMCID: PMC6635966 DOI: 10.1055/s-0039-1688525] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Implant therapy has become a widespread reality in modern dentistry. Nevertheless, dental implants can fail due to different causes, among which inflammatory peri-implant diseases (IPDs) are a major challenge, with prevalences that are much higher than previously believed.Specific searches were undertaken for each question raised between October and November 2017, in the PubMed website database (US National Library of Medicine, National Institutes of Health; Bethesda, Maryland, United States). Only articles written in English and published from 2007 onward were considered initially. The following keywords were used in the searches "periimplantitis (PI)," "periimplant mucositis (PM)," "dental implant failure," "periimplant microbiota," "periodontal microbiota," "implant failure" (no temporal limit), and "foreign body reaction" (no temporal limit). The selection process resulted in the selection of 239 articles that were analyzed in detail in elaborating this review. The reference list was limited to the 47 most relevant articles due to editorial limits of this Journal.Intrinsic differences between natural teeth and dental implants are able to give rise to inflammatory diseases that share only minor and scarcely relevant characters, and would consequently deserve different and specifically designed instruments and strategies, for both diagnosis and therapy.
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Affiliation(s)
- Claudio Passariello
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Dario Di Nardo
- Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, Rome, Italy
| | - Luca Testarelli
- Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, Rome, Italy
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44
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De-la-Pinta I, Cobos M, Ibarretxe J, Montoya E, Eraso E, Guraya T, Quindós G. Effect of biomaterials hydrophobicity and roughness on biofilm development. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2019; 30:77. [PMID: 31218489 DOI: 10.1007/s10856-019-6281-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 06/10/2019] [Indexed: 06/09/2023]
Abstract
Most hospitalized patients are carriers of biomedical devices. Infections associated with these devices cause great morbidity and mortality, especially in patients in intensive care units. Numerous strategies have been designed to prevent biofilm development on biodevices. However, biofilm formation is a complex process not fully clarified. In the current study, roughness and hydrophobicity of different biomaterials was analyzed to assess their influences on the biofilm formation of four leading etiological causes of healthcare-associated infections, Escherichia coli, Pseudomonas aeruginosa, Staphylococcus epidermidis and Candida albicans, using a CDC biofilm reactor. Hydrophobic materials allowed the formation of more abundant and profuse biofilms. Roughness had effect on biofilm formation, but its influence was not significant when material hydrophobicity was considered.
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Affiliation(s)
- Iker De-la-Pinta
- Departamento de Inmunología, Microbiología y Parasitología, UFI 11/25, Facultad de Medicina y Enfermería, Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU, Bilbao, Spain
| | - Mónica Cobos
- Departamento de Ciencia y Tecnología de Polímeros, Facultad de Química, Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU, San Sebastián, Spain
| | - Julen Ibarretxe
- Departamento de Física aplicada I, Escuela de Ingeniería de Bilbao, Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU, Bilbao, Spain
| | | | - Elena Eraso
- Departamento de Inmunología, Microbiología y Parasitología, UFI 11/25, Facultad de Medicina y Enfermería, Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU, Bilbao, Spain
| | - Teresa Guraya
- Departamento de Ingeniería Minera y Metalúrgica y Ciencia de los Materiales, Escuela de Ingeniería de Bilbao, Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU, Bilbao, Spain
| | - Guillermo Quindós
- Departamento de Inmunología, Microbiología y Parasitología, UFI 11/25, Facultad de Medicina y Enfermería, Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU, Bilbao, Spain.
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Kumar PS, KS SK, Grandhi VV, Gupta V. The Effects of Titanium Implant Surface Topography on Osseointegration: Literature Review. JMIR BIOMEDICAL ENGINEERING 2019. [DOI: 10.2196/13237] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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Dantas MVM, Verzola MHA, Sanitá PV, Dovigo LN, Cerri PS, Gabrielli MAC. The influence of Cisplatin-based chemotherapy on the osseointegration of dental implants: An in vivo mechanical and histometrical study. Clin Oral Implants Res 2019; 30:603-616. [PMID: 31022308 DOI: 10.1111/clr.13445] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 03/27/2019] [Accepted: 04/06/2019] [Indexed: 12/13/2022]
Abstract
OBJECTIVES To evaluate the effect of Cisplatin on bone repair and mineralization around implants and on the mechanical properties of bone tissue. MATERIALS AND METHODS Forty-three Wistar rats were randomly divided into two groups: Cisplatin (CIS, medication) and control (CTL, placebo solution), administered once a week for 4 weeks. After 4 weeks, implants were installed in both tibiae metaphysis. After 30 and 60 days, the animals were sacrificed and their femurs and tibiae were removed. Femurs were subjected to mechanical tests and tibiae for removal torque, arrangement and distribution of collagen fibers, morphometrical analyses (bone tissue in contact with the implant surface [BIC] and areal fraction between implant threads occupied by bone tissue [BAFO]) and scanning electron microscopy to calcium and calcium/phosphorus analysis. Data were analyzed by ANOVA or MANOVA, and Tukey or Games-Howell post hoc tests, respectively (α = 0.05). RESULTS The CTL specimens had significantly higher values (0.0001 ≤ p≤0.036) of strength (N), removal torque (N/cm2 ), %BIC, and %BAFO than CIS specimens, being their best results at day 60. No significant differences were found among the groups regarding the values of deformation, percentage of calcium, and calcium/phosphorus ratio. In CIS groups, there was a reduction in the organization of collagen at the bone/implant interface, resulting in a trabecular bone with thin trabeculae and birefringent collagen and irregular arrangement. CONCLUSIONS AND CLINICAL IMPLICATIONS Cisplatin interfered negatively in the repair and mineralization around dental implants, as well as on the quality of the bone tissue, mainly in the period of 30 days after the implant placement.
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Affiliation(s)
| | | | - Paula Volpato Sanitá
- Department of Dental Materials and Prosthodontics, São Paulo State University (UNESP), School of Dentistry, Araraquara, Brazil
| | - Lívia Nordi Dovigo
- Department of Social Dentistry, São Paulo State University (UNESP), School of Dentistry, Araraquara, Brazil
| | - Paulo Sérgio Cerri
- Department of Morphology, São Paulo State University (UNESP), School of Dentistry, Araraquara, Brazil
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Steffi C, Shi Z, Kong CH, Wang W. Bioinspired polydopamine and polyphenol tannic acid functionalized titanium suppress osteoclast differentiation: a facile and efficient strategy to regulate osteoclast activity at bone-implant interface. J R Soc Interface 2019; 16:20180799. [PMID: 30836894 PMCID: PMC6451398 DOI: 10.1098/rsif.2018.0799] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 02/12/2019] [Indexed: 12/21/2022] Open
Abstract
Osseointegration of metallic implants in porous osteoporotic bone remains a challenge. Surface modification of implants to reduce peri-implant osteoclastic bone resorption was explored in the study. Bioinspired polydopamine (pDOP) and polyphenol tannic acid (pTAN) are nature-derived universal coating systems that have emerged either as a sole coating or ad-layer for biomolecular conjugation on different biomaterials. The effects pDOP and pTAN on osteoclast development have not been reported before. In this study, osteoclast development was investigated on titanium (Ti) substrates coated with pDOP (Ti-pDOP) and pTAN (Ti-pTAN). The results showed that Ti-pDOP and Ti-pTAN coating reduced tartrate-resistant acid phosphatase activity and osteoclast cell number as compared with pristine Ti. Intriguingly, the reduction was higher on Ti-pTAN than on Ti-pDOP. Economical and biocompatible tannic acid serves as a superior coating in decreasing osteoclast activity when compared with that of pDOP coating and could be used to modulate osteoclast activity at bone-implant interfaces.
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Affiliation(s)
| | | | | | - Wilson Wang
- Department of Orthopaedic Surgery, National University of Singapore, NUHS Tower Block Level 11, 1E Kent Ridge Road, Singapore 119228, Republic of Singapore
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48
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Zhang Y, Cheng X, Jansen JA, Yang F, van den Beucken JJ. Titanium surfaces characteristics modulate macrophage polarization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 95:143-151. [DOI: 10.1016/j.msec.2018.10.065] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 09/24/2018] [Accepted: 10/17/2018] [Indexed: 12/16/2022]
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Kulakov AA, Kasparov AS, Porfenchuk DA. [Factors affecting osteointegration and the use of early functional load to reduce the duration of treatment in dental implantation]. STOMATOLOGIIA 2019; 98:107-115. [PMID: 31513161 DOI: 10.17116/stomat201998041107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The article presents literature data on the impact of the surface and shape of dental implants and early functional load with aesthetic and functional rehabilitation on osteointegration and stability of implants at various implantation terms.
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Affiliation(s)
- A A Kulakov
- Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russia
| | - A S Kasparov
- Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russia
| | - D A Porfenchuk
- Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russia
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50
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Radtke A, Grodzicka M, Ehlert M, Muzioł TM, Szkodo M, Bartmański M, Piszczek P. Studies on Silver Ions Releasing Processes and Mechanical Properties of Surface-Modified Titanium Alloy Implants. Int J Mol Sci 2018; 19:ijms19123962. [PMID: 30544865 PMCID: PMC6321524 DOI: 10.3390/ijms19123962] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 12/04/2018] [Accepted: 12/06/2018] [Indexed: 12/26/2022] Open
Abstract
Dispersed silver nanoparticles (AgNPs) on the surface of titanium alloy (Ti6Al4V) and titanium alloy modified by titania nanotube layer (Ti6Al4V/TNT) substrates were produced by the chemical vapor deposition method (CVD) using a novel precursor of the formula [Ag₅(O₂CC₂F₅)₅(H₂O)₃]. The structure and volatile properties of this compound were determined using single crystal X-ray diffractometry, variable temperature IR spectrophotometry (VT IR), and electron inducted mass spectrometry (EI MS). The morphology and the structure of the produced Ti6Al4V/AgNPs and Ti6Al4V/TNT/AgNPs composites were characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Moreover, measurements of hardness, Young's modulus, adhesion, wettability, and surface free energy have been carried out. The ability to release silver ions from the surface of produced nanocomposite materials immersed in phosphate-buffered saline (PBS) solution has been estimated using inductively coupled plasma mass spectrometry (ICP-MS). The results of our studies proved the usefulness of the CVD method to enrich of the Ti6Al4V/TNT system with silver nanoparticles. Among the studied surface-modified titanium alloy implants, the better nano-mechanical properties were noticed for the Ti6Al4V/TNT/AgNPs composite in comparison to systems non-enriched by AgNPs. The location of silver nanoparticles inside of titania nanotubes caused their lowest release rate, which may indicate suitable properties on the above-mentioned type of the composite for the construction of implants with a long term antimicrobial activity.
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Affiliation(s)
- Aleksandra Radtke
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland.
- Nano-Implant Ltd. Jurija Gagarina 5/102, 87-100 Toruń, Poland.
| | - Marlena Grodzicka
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland.
- Nano-Implant Ltd. Jurija Gagarina 5/102, 87-100 Toruń, Poland.
| | - Michalina Ehlert
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland.
- Nano-Implant Ltd. Jurija Gagarina 5/102, 87-100 Toruń, Poland.
| | - Tadeusz M Muzioł
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland.
| | - Marek Szkodo
- Faculty of Mechanical Engineering, Gdańsk University of Technology, ul. Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Michał Bartmański
- Faculty of Mechanical Engineering, Gdańsk University of Technology, ul. Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Piotr Piszczek
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland.
- Nano-Implant Ltd. Jurija Gagarina 5/102, 87-100 Toruń, Poland.
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