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Hou HH, Lee BS, Liu YC, Wang YP, Kuo WT, Chen IH, He AC, Lai CH, Tung KL, Chen YW. Vapor-Induced Pore-Forming Atmospheric-Plasma-Sprayed Zinc-, Strontium-, and Magnesium-Doped Hydroxyapatite Coatings on Titanium Implants Enhance New Bone Formation-An In Vivo and In Vitro Investigation. Int J Mol Sci 2023; 24:ijms24054933. [PMID: 36902368 PMCID: PMC10003357 DOI: 10.3390/ijms24054933] [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: 02/06/2023] [Revised: 02/15/2023] [Accepted: 02/24/2023] [Indexed: 03/08/2023] Open
Abstract
OBJECTIVES Titanium implants are regarded as a promising treatment modality for replacing missing teeth. Osteointegration and antibacterial properties are both desirable characteristics for titanium dental implants. The aim of this study was to create zinc (Zn)-, strontium (Sr)-, and magnesium (Mg)-multidoped hydroxyapatite (HAp) porous coatings, including HAp, Zn-doped HAp, and Zn-Sr-Mg-doped HAp, on titanium discs and implants using the vapor-induced pore-forming atmospheric plasma spraying (VIPF-APS) technique. METHODS The mRNA and protein levels of osteogenesis-associated genes such as collagen type I alpha 1 chain (COL1A1), decorin (DCN), osteoprotegerin (TNFRSF11B), and osteopontin (SPP1) were examined in human embryonic palatal mesenchymal cells. The antibacterial effects against periodontal bacteria, including Porphyromonas gingivalis and Prevotella nigrescens, were investigated. In addition, a rat animal model was used to evaluate new bone formation via histologic examination and micro-computed tomography (CT). RESULTS The ZnSrMg-HAp group was the most effective at inducing mRNA and protein expression of TNFRSF11B and SPP1 after 7 days of incubation, and TNFRSF11B and DCN after 11 days of incubation. In addition, both the ZnSrMg-HAp and Zn-HAp groups were effective against P. gingivalis and P. nigrescens. Furthermore, according to both in vitro studies and histologic findings, the ZnSrMg-HAp group exhibited the most prominent osteogenesis and concentrated bone growth along implant threads. SIGNIFICANCE A porous ZnSrMg-HAp coating using VIPF-APS could serve as a novel technique for coating titanium implant surfaces and preventing further bacterial infection.
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Affiliation(s)
- Hsin-Han Hou
- Graduate Institute of Oral Biology, School of Dentistry, National Taiwan University, Taipei 10048, Taiwan
- Department of Dentistry, National Taiwan University Hospital, Taipei 10048, Taiwan
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei 10048, Taiwan
| | - Bor-Shiunn Lee
- Graduate Institute of Oral Biology, School of Dentistry, National Taiwan University, Taipei 10048, Taiwan
- Department of Dentistry, National Taiwan University Hospital, Taipei 10048, Taiwan
| | - Yu-Cheng Liu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Yi-Ping Wang
- Department of Dentistry, National Taiwan University Hospital, Taipei 10048, Taiwan
| | - Wei-Ting Kuo
- Graduate Institute of Oral Biology, School of Dentistry, National Taiwan University, Taipei 10048, Taiwan
- Department of Dentistry, National Taiwan University Hospital, Taipei 10048, Taiwan
| | - I-Hui Chen
- Division of Periodontology, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
| | - Ai-Chia He
- Graduate Institute of Oral Biology, School of Dentistry, National Taiwan University, Taipei 10048, Taiwan
| | - Chern-Hsiung Lai
- College of Life Science, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
| | - Kuo-Lun Tung
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Yi-Wen Chen
- Department of Dentistry, National Taiwan University Hospital, Taipei 10048, Taiwan
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei 10048, Taiwan
- Correspondence:
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Mello-Machado RC, Sartoretto SC, Granjeiro JM, Calasans-Maia JDA, de Uzeda MJPG, Mourão CFDAB, Ghiraldini B, Bezerra FJB, Senna PM, Calasans-Maia MD. Osseodensification enables bone healing chambers with improved low-density bone site primary stability: an in vivo study. Sci Rep 2021; 11:15436. [PMID: 34326400 PMCID: PMC8322171 DOI: 10.1038/s41598-021-94886-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 07/18/2021] [Indexed: 11/19/2022] Open
Abstract
Primary implant stability is a prerequisite for successful implant osseointegration. The osseodensification technique (OD) is a non-subtractive drilling technique that preserves the bone tissue, increases osteotomy wall density, and improves the primary stability. This study aimed to investigate the hypothesis that OD, through a wider osteotomy, produces healing chambers (HCs) at the implant-bone interface without impacting low-density bone primary stability. Twenty implants (3.5 × 10 mm) with a nanohydroxyapatite (nHA) surface were inserted in the ilium of ten sheep. Implant beds were prepared as follows: (i) 2.7-mm-wide using subtractive conventional drilling (SCD) technique (n = 10); (ii) 3.8-mm-wide using an OD bur system (n = 10). The sheep were randomized to two groups, with samples collected at either 14-(n = 5) or 28-days (n = 5) post-surgery and processed for histological and histomorphometric evaluation of bone-implant contact (BIC) and bone area fraction occupancy (BAFO). No significant group differences were found with respect to final insertion torque and implant stability quotient (p > 0.050). BIC values were higher for SCD after 14 and 28 days (p < 0.050); however, BAFO values were similar (p > 0.050). It was possible to conclude that the OD technique allowed a wider implant bed preparation without prejudice on primary stability and bone remodeling.
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Affiliation(s)
- Rafael Coutinho Mello-Machado
- Graduate Program, Dentistry School, Universidade Federal Fluminense, Niterói, Brazil.,Implantology Department, Universidade Iguaçu, Nova Iguaçu, RJ, Brazil
| | - Suelen Cristina Sartoretto
- Oral Surgery Department, Universidade Iguaçu, Nova Iguaçu, RJ, Brazil.,Post-Graduation Program in Dentistry, Universidade Veiga de Almeida, Rio de Janeiro, RJ, Brazil.,Clinical Research Laboratory, Dentistry School, Universidade Federal Fluminense, Rua Mario Santos Braga, 28/4 Floor, Niterói, RJ, Brazil
| | - Jose Mauro Granjeiro
- Clinical Research Laboratory, Dentistry School, Universidade Federal Fluminense, Rua Mario Santos Braga, 28/4 Floor, Niterói, RJ, Brazil.,National Institute of Metrology, Quality and Technology (INMETRO), Duque de Caxias, RJ, Brazil
| | | | - Marcelo Jose Pinheiro Guedes de Uzeda
- Oral Surgery Department, Universidade Iguaçu, Nova Iguaçu, RJ, Brazil.,Clinical Research Laboratory, Dentistry School, Universidade Federal Fluminense, Rua Mario Santos Braga, 28/4 Floor, Niterói, RJ, Brazil
| | | | - Bruna Ghiraldini
- Dental Research Division, Dentistry School, Universidade Paulista, São Paulo, SP, Brazil
| | | | | | - Mônica Diuana Calasans-Maia
- Clinical Research Laboratory, Dentistry School, Universidade Federal Fluminense, Rua Mario Santos Braga, 28/4 Floor, Niterói, RJ, Brazil.
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Li CX, Wang F, Jin ZL. A four-year prospective study of self-assembling nano-modified dental implants in patients with type 2 diabetes mellitus. J Dent Sci 2020; 15:294-301. [PMID: 32952887 PMCID: PMC7486501 DOI: 10.1016/j.jds.2020.03.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 03/25/2020] [Indexed: 12/03/2022] Open
Abstract
Background/purpose Dental implantation has become an efficient and important method of replacing lost teeth. However, the success rate of dental-implant treatment in diabetics is higher than patients without diabetes. The aim of this study was to prospectively evaluate long-term marginal bone loss (MBL) and the stability of a self-assembling nano-modified implant in patients with type 2 diabetes mellitus compared with a conventional implant. Materials and methods Twenty-five patients with type 2 diabetes were recruited for this study. Through a random selection process, one site in each patient received a conventional implant and the other site received a nano-modified implant. The implant stability quotient was measured using resonance frequency analysis (RFA), and MBL was measured using panoramic radiography from uncovering to four-year follow-up. Results No significant difference in implant stability quotient was found between the two groups (P > 0.05), except for the time at implant insertion (P < 0.05). MBL in the nano-modified implant group exhibited a decreasing change compared with the conventional implant group, between the uncovering and the loading stage (P < 0.05), while there was no significant difference in other stages (P > 0.05). Conclusion There was potentially increased implant stability and diminished MBL around the self-assembling nano-modified implant in the uncovering-loading stage of early osseointegration in patients with type 2 diabetes.
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Affiliation(s)
- Cui-Xia Li
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, PR China
| | - Feng Wang
- Department of Stomatology, The 546th Hospital of People's Liberation Army, Malan, PR China
| | - Zuo-Lin Jin
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, PR China
- Corresponding author. Department of Orthodontics, School of Stomatology, Fourth Military Medical University, No. 145 Changle West Road, Xi'an, PR China.
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Surface Immobilization of TiO 2 Nanotubes with Bone Morphogenetic Protein-2 Synergistically Enhances Initial Preosteoblast Adhesion and Osseointegration. BIOMED RESEARCH INTERNATIONAL 2019; 2019:5697250. [PMID: 31032352 PMCID: PMC6457305 DOI: 10.1155/2019/5697250] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Accepted: 03/10/2019] [Indexed: 11/18/2022]
Abstract
Although titanium (Ti) alloys have been widely used as implant materials, the bioinertness of pristine Ti impairs their bioactivity and early osseointegration. In the present work, we prepared TiO2 nanotubes (TNT) layer on the titanium (Ti) surface by anodic oxidation. The anodized surface was functionalized with human bone morphogenetic protein-2 coating to form the hBMP-2/TNT surface. The release behavior of hBMP-2 on the hBMP-2/TNT surface displayed a controlled and sustained pattern, compared to that on the hBMP-2/Ti surface, which showed a rapid release. In vitro cellular activity tests demonstrated that both TNT and hBMP-2/Ti surfaces, particularly the hBMP-2/TNT surface, enhanced adhesion, proliferation, and differentiation of osteoblast cells. Increased cell adhesion, improved cytoskeleton organization, and immunofluorescence staining of vinculin were observed on the modified surfaces. The TNT, hBMP-2/Ti, and hBMP-2/TNT surfaces, especially the hBMP-2/TNT surface, further displayed an upregulated gene expression of adhesion and osteogenic markers vinculin, collagen type 1, osteopontin, and osteocalcin, compared to the pristine Ti surface. In vivo experiments using a rat model demonstrated that the TNT and hBMP-2/Ti surfaces, in particular the hBMP-2/TNT surface, improved osseointegration and showed a superior bone bonding ability compared to Ti. Our study revealed a synergistic role played by TiO2 nanotubes nanotopography and hBMP-2 in promoting initial osteoblast adhesion, proliferation, differentiation, and osseointegration, thus suggesting a promising method for better modifying the implant surface.
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Li Y, Li B, Song Y, Ma A, Li C, Zhang X, Li H, Zhang Q, Zhang K. Improved osteoblast adhesion and osseointegration on TiO 2 nanotubes surface with hydroxyapatite coating. Dent Mater J 2018; 38:278-286. [PMID: 30541994 DOI: 10.4012/dmj.2018-118] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
To improve initial osteoblast adhesion and subsequent osseointegration, TiO2 nanotubes layer was constructed on the titanium (Ti) surface by anodic oxidation (AO), with an additional hydroxyapatite (HA) coating to form the AO/HA surface. Tests on in vitro cellular activity displayed that the AO surface, especially the AO/HA surface, promoted initial adhesion, proliferation and differentiation of osteoblast cells. The modified AO and AO/HA surfaces further presented an up-regulated gene expression of osteogenic and adhesion markers collagen type 1 (COL), osteopontin (OPN), osteocalcin (OCN) and vinculin. In addition, in vivo experiments with a rat model demonstrated that the AO surface, particularly the AO/HA surface, achieved earlier osseointegration and a superior bone bonding ability compared with Ti. Our study shed light on a synergistic role played by nanotopography and HA in promoting osteoblast adhesion, proliferation, differentiation and osseointegration, thus suggesting a promising method for better modifying the implant surface.
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Affiliation(s)
- Ying Li
- Stomatological Hospital, Tianjin Medical University
| | - Baoe Li
- School of Materials Science and Engineering, Hebei University of Technology
| | - Yunjia Song
- Stomatological Hospital, Tianjin Medical University
| | - Aobo Ma
- Stomatological Hospital, Tianjin Medical University
| | - Changyi Li
- Stomatological Hospital, Tianjin Medical University
| | - Xu Zhang
- Stomatological Hospital, Tianjin Medical University
| | - Hongjie Li
- Stomatological Hospital, Tianjin Medical University
| | - Qian Zhang
- Stomatological Hospital, Tianjin Medical University
| | - Kai Zhang
- Stomatological Hospital, Tianjin Medical University
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Karaman O, Kelebek S, Demirci EA, İbiş F, Ulu M, Ercan UK. Synergistic Effect of Cold Plasma Treatment and RGD Peptide Coating on Cell Proliferation over Titanium Surfaces. Tissue Eng Regen Med 2018; 15:13-24. [PMID: 30603531 PMCID: PMC6171635 DOI: 10.1007/s13770-017-0087-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 09/12/2017] [Accepted: 09/14/2017] [Indexed: 12/21/2022] Open
Abstract
The aim of this study was to investigate the synergistic effect of cold atmospheric plasma (CAP) treatment and RGD peptide coating for enhancing cellular attachment and proliferation over titanium (Ti) surfaces. The surface structure of CAP-treated and RGD peptide-coated Ti discs were characterized by contact angle goniometer and atomic force microscopy. The effect of such surface modification on human bone marrow derived mesenchymal stem cells (hMSCs) adhesion and proliferation was assessed by cell proliferation and DNA content assays. Besides, hMSCs' adhesion and morphology on surface modified Ti discs were observed via fluorescent and scanning electron microscopy. RGD peptide coating following CAP treatment significantly enhanced cellular adhesion and proliferation among untreated, CAP-treated and RGD peptide-coated Ti discs. The treatment of Ti surfaces with CAP may contribute to improved RGD peptide coating, which enables increased cellular integrations with the Ti surfaces.
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Affiliation(s)
- Ozan Karaman
- Tissue Engineering and Regenerative Medicine Laboratory, Department of Biomedical Engineering, Faculty of Engineering and Architecture, Rm 148, İzmir Katip Çelebi University, 35620 İzmir, Turkey
| | - Seyfi Kelebek
- Department of Oral and Maxillofacial Surgery, İzmir Katip Çelebi University, 35620 İzmir, Turkey
| | - Emine Afra Demirci
- Tissue Engineering and Regenerative Medicine Laboratory, Department of Biomedical Engineering, Faculty of Engineering and Architecture, Rm 148, İzmir Katip Çelebi University, 35620 İzmir, Turkey
| | - Fatma İbiş
- Plasma Medicine Laboratory, Department of Biomedical Engineering, Faculty of Engineering and Architecture, Rm 123, İzmir Katip Çelebi University, 35620 İzmir, Turkey
| | - Murat Ulu
- Department of Oral and Maxillofacial Surgery, İzmir Katip Çelebi University, 35620 İzmir, Turkey
| | - Utku Kürşat Ercan
- Plasma Medicine Laboratory, Department of Biomedical Engineering, Faculty of Engineering and Architecture, Rm 123, İzmir Katip Çelebi University, 35620 İzmir, Turkey
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Hou PJ, Ou KL, Wang CC, Huang CF, Ruslin M, Sugiatno E, Yang TS, Chou HH. Hybrid micro/nanostructural surface offering improved stress distribution and enhanced osseointegration properties of the biomedical titanium implant. J Mech Behav Biomed Mater 2017; 79:173-180. [PMID: 29306080 DOI: 10.1016/j.jmbbm.2017.11.042] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 11/09/2017] [Accepted: 11/25/2017] [Indexed: 01/24/2023]
Abstract
OBJECTIVES The aim of the present study was to investigate the surface characteristic, biomechanical behavior, hemocompatibility, bone tissue response and osseointegration of the optimal micro-arc oxidation surface-treated titanium (MST-Ti) dental implant. MATERIALS AND METHODS The surface characteristic, biomechanical behavior and hemocompatibility of the MST-Ti dental implant were performed using scanning electron microscope, finite element method, blood dripping and immersion tests. The mini-pig model was utilized to evaluate the bone tissue response and osseointegration of the MST-Ti dental implant in vivo. Data were analyzed by analysis of variance using the Student's t-test (P ≤ 0.05). RESULTS The hybrid volcano-like micro/nanoporous structure was formed on the surface of the MST-Ti dental implant. The hybrid volcano-like micro/nanoporous surface played an important role to improve the stress transfer between fixture, cortical bone and cancellous bone for the MST-Ti dental implant. Moreover, the MST-Ti implant was considered to have the outstanding hemocompatibility. In vivo testing results showed that the bone-to-implant contact (BIC) ratio significantly altered as the implant with micro/nanoporous surface. After 12 weeks of implantation, the MST-Ti dental implant group exhibited significantly higher BIC ratio than the untreated dental implant group. In addition, the MST-Ti dental implant group also presented an enhancing osseointegration, particularly in the early stages of bone healing. CONCLUSION It can be concluded that the micro-arc oxidation approach induced the formation of micro/nanoporous surface is a promising and reliable alternative surface modification for Ti dental implant applications.
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Affiliation(s)
- Ping-Jen Hou
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan
| | - Keng-Liang Ou
- Department of Dentistry, Taipei Medical University Hospital, Taipei 110, Taiwan; Department of Dentistry, Taipei Medical University-Shuang Ho Hospital, New Taipei City 235, Taiwan; Department of Dentistry, Cathay General Hospital, Taipei 106, Taiwan; 3D Global Biotech Inc., New Taipei City 221, Taiwan
| | - Chin-Chieh Wang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
| | - Chiung-Fang Huang
- Department of Dentistry, Taipei Medical University Hospital, Taipei 110, Taiwan; School of Dental Technology, Taipei Medical University, Taipei 110, Taiwan
| | - Muhammad Ruslin
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Hasanuddin University, Makassar, Indonesia
| | - Erwan Sugiatno
- Department of Prosthodontic, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Tzu-Sen Yang
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan; School of Biomedical Engineering, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; Graduate Institute of Nanomedicine and Medical Engineering, Taipei Medical University, Taipei 110, Taiwan.
| | - Hsin-Hua Chou
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; Department of Prosthodontic, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia; Department of Dentistry, Taipei Medical University-Wan Fang Hospital, Taipei 116, Taiwan.
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Research of StemBios Cell Therapy on Dental Implants Containing Nanostructured Surfaces: Biomechanical Behaviors, Microstructural Characteristics, and Clinical Trial. IMPLANT DENT 2017; 25:63-73. [PMID: 26473440 DOI: 10.1097/id.0000000000000337] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE The aim of the present study was to examine the osseointegration in low-density bone tissue for SLAffinity-treated implants with StemBios (SB) cell therapy. MATERIALS AND METHODS The morphologies of SLAffinity-treated surfaces were characterized using scanning electron microscopy. In the animal model, implants were installed in the mandibular canine-premolar area of 12 miniature pigs. Each pig received 3 implants of machine, sand blasted, large grit, and acid etched, and SLAffinity-treated implants. In the clinical trial, 10 patients received 1 SLAffinity-treated implant in the maxilla in the posterior area and 1 patient with low bone tissue density received 2 SLAffinity-treated implants with SB cell therapy. Resonance frequency analysis and computed tomography were assessed monthly over the first 3 months after implant placement. RESULTS The results demonstrated that surface treatment significantly affected early osseointegration in patients who received SB cell therapy. SB cell therapy transferred the stress caused by the implant more uniformly, and the stress decreased with healing time. SLAffinity-treated implants also proved clinically successful after the 3 months. CONCLUSION The SLAffinity treatments enhanced osseointegration significantly, especially at early stages of bone tissue healing with SB cell therapy.
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Rapid Osseointegration of Titanium Implant With Innovative Nanoporous Surface Modification: Animal Model and Clinical Trial. IMPLANT DENT 2017; 24:441-7. [PMID: 25946663 DOI: 10.1097/id.0000000000000258] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVES SLAffinity is the hybrid topography consisting of micropits and nanoporous TiO2 layers through electrochemical oxidation to mimic the natural bony environment. The aim of this study was to examine the rate of osseointegration in animal models and to further investigate the stability for implants with SLAffinity-treated surface in the clinical trial. MATERIALS AND METHODS Implants were installed in the mandibular canine-premolar area of 12 miniature pigs. Each pig received 2 implants with the same shapes but with different chemical surfaces. In the clinical trial, 25 patients were included. Each patient received 1 SLAffinity-treated implant on the posterior area of either arch. Resonance frequency analysis and computed tomography were assessed weekly over the first 12 weeks after implant placement. RESULTS The results found that surface treatment did affect the bone-to-implant contact (BIC) significantly. Comparison of BIC at 3 weeks in animal study showed that the SLAffinity-treated implants presented significantly higher values than machine surface implants. SLAffinity-treated implants also proved clinically successful through 12 months, ready for prosthodontic restoration. CONCLUSION The effect of SLAffinity treatments enhanced osseointegration significantly, especially at early stages of bone healing. Clinical trial finding, furthermore, ensured that the SLAffinity treatment was a reliable surface modification alternative.
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Chiang HJ, Hsu HJ, Peng PW, Wu CZ, Ou KL, Cheng HY, Walinski CJ, Sugiatno E. Early bone response to machined, sandblasting acid etching (SLA) and novel surface-functionalization (SLAffinity) titanium implants: characterization, biomechanical analysis and histological evaluation in pigs. J Biomed Mater Res A 2015; 104:397-405. [PMID: 26418567 DOI: 10.1002/jbm.a.35577] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 09/17/2015] [Accepted: 09/24/2015] [Indexed: 11/08/2022]
Abstract
The purpose of the present study was to examine early tissue response and osseointegration in the animal model. The surface morphologies of SLAffinity were characterized using scanning electron microscopy and atomic force microscopy. The microstructures were examined by X-ray diffraction, and hardness was measured by nanoindentation. Moreover, the safety and toxicity properties were evaluated using computer-aided programs and cell cytotoxicity assays. In the animal model, implants were installed in the mandibular canine-premolar area of 12 miniature pigs. Each pig received three implants: machine, sandblasted, large grit, acid-etched, and SLAffinity-treated implants. The results showed that surface treatment did affect bone-to-implant contact (BIC) significantly. At 3 weeks, the SLAffinity-treated implants were found to present significantly higher BIC values than the untreated implants. The SLAffinity treatments enhanced osseointegration significantly, especially at early stages of bone tissue healing. As described above, the results of the present study demonstrate that the SLAffinity treatment is a reliable surface modification method.
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Affiliation(s)
- Hsi-Jen Chiang
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan.,Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan
| | - Heng-Jui Hsu
- Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan.,School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
| | - Pei-Wen Peng
- Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan.,School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
| | - Ching-Zong Wu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan.,Department of Dentistry, Taipei Medical University Hospital, Taipei 110, Taiwan
| | - Keng-Liang Ou
- Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan.,School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan.,Research Center for Biomedical Implants and Microsurgery Devices, Taipei Medical University, Taipei 110, Taiwan.,Department of Dentistry, Taipei Medical University-Shuang Ho Hospital, Taipei 235, Taiwan
| | - Han-Yi Cheng
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan.,Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan.,Research Center for Biomedical Implants and Microsurgery Devices, Taipei Medical University, Taipei 110, Taiwan
| | - Christopher J Walinski
- Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan.,College of Dentistry, University of Tennessee Health Sciences Center, 875 Union Avenue Memphis, TN 38103, USA.,Department of Restorative Dentistry Director of Laser Dentistry, 875 Union Avenue Memphis, TN 38103, USA
| | - Erwan Sugiatno
- Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan.,Department of Prosthodontic, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia
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Time-dependent periimplant bone reaction of acidic monomer-treated injection molded zirconia implants in rabbit tibiae. IMPLANT DENT 2015; 24:287-93. [PMID: 25902367 DOI: 10.1097/id.0000000000000246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE The aim of this study was to evaluate and compare the osseointegration of zirconia implants in rabbit tibiae with and without 10-methacryloyloxydecyl dihydrogen phosphate (MDP) treatment. MATERIALS AND METHODS Twenty-eight rabbits received a total of 112 external hex-type implants made by the powder injection molding technique with and without MDP treatment before installation in the tibiae. The contact angles on the zirconia implants and zirconia discs before and after MDP application were evaluated. Removal torque (RT) and bone-implant contact (BIC) ratios were measured. RESULTS The MDP treatment markedly enhanced the hydrophilicity and seemed to alter the topography and chemical composition of the implant and disc surface. As the healing time increases, the BIC and RT were increased in both groups. The MDP-treated implants exhibited higher BIC values than the control implants after 2 and 4 weeks of healing. The RT was higher in MDP-treated implants after 2 weeks of healing but not after 4 weeks of healing. CONCLUSION The 10-MDP treatments made the surface more hydrophilic and enhanced the osseointegration of the implants in the early healing phase.
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12
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Balasundaram G, Storey DM, Webster TJ. Molecular plasma deposition: biologically inspired nanohydroxyapatite coatings on anodized nanotubular titanium for improving osteoblast density. Int J Nanomedicine 2015; 10:527-35. [PMID: 25609958 PMCID: PMC4298345 DOI: 10.2147/ijn.s65308] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
In order to begin to prepare a novel orthopedic implant that mimics the natural bone environment, the objective of this in vitro study was to synthesize nanocrystalline hydroxyapatite (NHA) and coat it on titanium (Ti) using molecular plasma deposition (MPD). NHA was synthesized through a wet chemical process followed by a hydrothermal treatment. NHA and micron sized hydroxyapatite (MHA) were prepared by processing NHA coatings at 500°C and 900°C, respectively. The coatings were characterized before and after sintering using scanning electron microscopy, atomic force microscopy, and X-ray diffraction. The results revealed that the post-MPD heat treatment of up to 500°C effectively restored the structural and topographical integrity of NHA. In order to determine the in vitro biological responses of the MPD-coated surfaces, the attachment and spreading of osteoblasts (bone-forming cells) on the uncoated, NHA-coated, and MHA-coated anodized Ti were investigated. Most importantly, the NHA-coated substrates supported a larger number of adherent cells than the MHA-coated and uncoated substrates. The morphology of these cells was assessed by scanning electron microscopy and the observed shapes were different for each substrate type. The present results are the first reports using MPD in the framework of hydroxyapatite coatings on Ti to enhance osteoblast responses and encourage further studies on MPD-based hydroxyapatite coatings on Ti for improved orthopedic applications.
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Affiliation(s)
| | | | - Thomas J Webster
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA ; Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, Saudi Arabia
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Oliveira NCM, Moura CCG, Zanetta-Barbosa D, Mendonça DBS, Cooper L, Mendonça G, Dechichi P. Effects of titanium surface anodization with CaP incorporation on human osteoblastic response. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:1958-62. [PMID: 23498218 PMCID: PMC4504235 DOI: 10.1016/j.msec.2013.01.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Accepted: 01/06/2013] [Indexed: 01/26/2023]
Abstract
In this study we investigated whether anodization with calcium phosphate (CaP) incorporation (Vulcano®) enhances growth factors' secretion, osteoblast-specific gene expression, and cell viability, when compared to acid etched surfaces (Porous®) and machined surfaces (Screw®) after 3 and 7days. Results showed significant cell viability for Porous and Vulcano at day 7, when compared with Screw (p=0.005). At the same time point, significant differences regarding runt-related transcription factor 2 (Runx2), alkaline phosphatase (ALP) and bone sialoprotein (BSP) expression were found for all surfaces (p<0.05), but with greater fold induction for Porous and Vulcano. The secretion of transforming growth factor β1 (TGF-β1) and bone morphogenetic protein 2 (BMP-2) was not significantly affected by surface treatment in any experimental time (p>0.05). Although no significant correlation was found for growth factors' secretion and Runx2 expression, a significant positive correlation between this gene and ALP/BSP expression showed that their strong association is independent on the type of surface. The incorporation of CaP affected the biological parameters evaluated similar to surfaces just acid etched. The results presented here support the observations that roughness also may play an important role in determining cell response.
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Shon WJ, Chung SH, Kim HK, Han GJ, Cho BH, Park YS. Peri-implant bone formation of non-thermal atmospheric pressure plasma-treated zirconia implants with different surface roughness in rabbit tibiae. Clin Oral Implants Res 2013; 25:573-9. [PMID: 23406227 DOI: 10.1111/clr.12115] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/21/2012] [Indexed: 12/22/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate and compare the osseointegration of powder-injection molded (PIM) zirconia implants in rabbit tibiae with or without He plasma treatment. MATERIAL AND METHODS Twenty-five rabbits received 4 types of external hex implants with identical geometry in the tibiae: PIM zirconia implants, roughened PIM zirconia implants, plasma-treated PIM zirconia implants, and plasma-treated roughened PIM zirconia implants. The contact angles of the four types of implants were evaluated. Removal torque tests and histomorphometric analyses were performed. RESULTS The plasma treatment markedly enhanced the hydrophilicity, but did not seem to change the surface topography of the PIM zirconia implants. There were statistically significant differences in the bone-to-implant contact (BIC) ratios, bone volume (BV/TV), and removal torque values (RTQ) among the tested implant types (P < 0.001). The plasma-treated implants exhibited significantly higher BIC and BV/TV values than the untreated implants. However, the removal torque values favored the rough surface. CONCLUSIONS The He plasma treatments on PIM zirconia implants made the surface more hydrophilic and enhanced the osseointegration of the implants without changing the micro-topography.
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Affiliation(s)
- Won-Jun Shon
- Department of Conservative Dentistry, Dental Research Institute and School of Dentistry, Seoul National University, Seoul, South Korea
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Cheng HY, Chu KT, Shen FC, Pan YN, Chou HH, Ou KL. Stress effect on bone remodeling and osseointegration on dental implant with novel nano/microporous surface functionalization. J Biomed Mater Res A 2012; 101:1158-64. [DOI: 10.1002/jbm.a.34415] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Accepted: 08/08/2012] [Indexed: 11/11/2022]
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Ko KH, Kim DG, Lee H, Byon E, Jeong Y, Park CJ, Cho LR. Gene expression in Ca or Mg implanted titanium surfaces. Tissue Eng Regen Med 2012. [DOI: 10.1007/s13770-012-0137-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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