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Abuhajar E, Salim NA, Satterthwaite JD, Silikas N, Anweigi LM. Effect of bioceramic powder abrasion on different implant surfaces. J Prosthodont 2024; 33:60-69. [PMID: 38594924 DOI: 10.1111/jopr.13857] [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: 10/29/2022] [Accepted: 03/26/2024] [Indexed: 04/11/2024] Open
Abstract
PURPOSE Bioceramic coatings have been shown to promote bone repair, which aids in the early integration of implants. This study aimed to evaluate the influence of air abrasion with a bioceramic abrasive on the surface characteristics of different implant materials and surfaces. The dissolution of the applied treatment from the surfaces over 3 weeks was also assessed. MATERIALS AND METHODS Discs of three alloys used for dental implants were studied and compared: two types of commercially pure titanium (CpTi)/ (CpTi SLActive) and titanium-zirconia (TiZr). The tested surfaces were: CpTi control (CpC), sandblasted (SB), sandblasted and acid-etched (SBE), and CpTi SLActive®, (TiZr) Roxolid®. Three discs from each group underwent air abrasion with apatite bioceramic powders, 95% hydroxyapatite (HA)/5% calcium oxide (CaO), and 90% hydroxyapatite (HA)/10% calcium oxide (CaO). The treated discs were surface characterized by optical profilometry to obtain surface roughness, scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS) to compare element weight percentages of titanium, calcium, and phosphate. Dissolution was assessed using inductively coupled plasma optic emission spectrometry (ICP-OES). RESULTS Bioceramic powders were deposited on all tested surfaces leading to changes in surface characteristics. The only statistically significant differences between the material groups for surface roughness were found with 95% HA/5% CaO powder in the Sp and Rp parameters (p = 0.03 and 0.04, respectively). There were no significant differences in the Ca and P wt% between all groups and powders 95% HA/5% CaO and 90% HA/10% CaO (p = 0.14, 0.18, and p = 0.15, 0.12, respectively). A non-uniform dispersion of the treatment on the surface layer was visible on all treated surfaces. The bioceramic powder continued to dissolute from the tested surfaces for 3 weeks. CONCLUSION Bioceramic abrasion modifies implant surface characteristics, although the change in surface characteristics resulting from such treatment was not influenced by the implant material or surface treatment. Air abrasion with hydroxyapatite and calcium oxide bioceramics leaves powder deposits on the treated implant surfaces that could potentially influence the healing of implants affected by peri-implantitis.
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Affiliation(s)
- Eman Abuhajar
- Faculty of Medicine, Dentistry and Oral Surgery, University of Tripoli, Tripoli, Libya
| | - Nesreen A Salim
- Prosthodontic Department, School of Dentistry, The University of Jordan, Consultant in Fixed and Removable Prosthodontics, The University of Jordan Hospital, Amman, Jordan
| | - Julian D Satterthwaite
- Division of Dentistry, School of Medical Sciences, The University of Manchester, Manchester, UK
| | - Nick Silikas
- School of Dentistry, The University of Manchester, Manchester, UK
| | - Lamyia M Anweigi
- College of Dental Medicine, QU Health, Qatar University, Doha, Qatar
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Kumar A, Sijina K, Rajanikant G, Kuriachen B. Experimental Investigation into the effects of Electric Discharge Surface Modification Process Parameters on the Biocompatibility of Ti6Al4V. BIOMEDICAL ENGINEERING ADVANCES 2022. [DOI: 10.1016/j.bea.2022.100063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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3
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Wagner G, Eggers B, Duddeck D, Kramer FJ, Bourauel C, Jepsen S, Deschner J, Nokhbehsaim M. Influence of cold atmospheric plasma on dental implant materials - an in vitro analysis. Clin Oral Investig 2021; 26:2949-2963. [PMID: 34907458 PMCID: PMC8898257 DOI: 10.1007/s00784-021-04277-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 11/01/2021] [Indexed: 12/25/2022]
Abstract
Background and objectives Alterations in the microenvironment of implant surfaces could influence the cellular crosstalk and adhesion patterns of dental implant materials. Cold plasma has been described to have an influence on cells, tissues, and biomaterials. Hence, the mechanisms of osseointegration may be altered by non-thermal plasma treatment depending on different chemical compositions and surface coatings of the biomaterial. The aim of the present study is to investigate the influence of cold atmospheric plasma (CAP) treatment on implant surfaces and its biological and physicochemical side effects. Materials and methods Dental implant discs from titanium and zirconia with different surface modifications were treated with CAP at various durations. Cell behavior and adhesion patterns of human gingival fibroblast (HGF-1) and osteoblast-like cells (MG-63) were examined using scanning electron microscopy and fluorescence microscopy. Surface chemical characterization was analyzed using energy-dispersive X-ray spectroscopy (EDS). Quantitative analysis of cell adhesion, proliferation, and extracellular matrix formation was conducted including real-time PCR. Results CAP did not affect the elemental composition of different dental implant materials. Additionally, markers for cell proliferation, extracellular matrix formation, and cell adhesion were differently regulated depending on the application time of CAP treatment in MG-63 cells and gingival fibroblasts. Conclusions CAP application is beneficial for dental implant materials to allow for faster proliferation and adhesion of cells from the surrounding tissue on both titanium and zirconia implant surfaces with different surface properties. Clinical relevance The healing capacity provided through CAP treatment could enhance osseointegration of dental implants and has the potential to serve as an effective treatment option in periimplantitis therapy.
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Affiliation(s)
- Gunar Wagner
- Department of Periodontology, Operative and Preventive Dentistry, Center of Dento-Maxilo-Facial Medicine, University of Bonn, Welschnonnenstr. 17, 53111, Bonn, Germany.
| | - Benedikt Eggers
- Department of Oral Surgery, Center of Dento-Maxillo-Facial Medicine, University of Bonn, 53111, Bonn, Germany
| | - Dirk Duddeck
- Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, University Charité Berlin, 14197, Berlin, Germany.,Research Department, CleanImplant Foundation, 10117, Berlin, Germany
| | - Franz-Josef Kramer
- Department of Oral Surgery, Center of Dento-Maxillo-Facial Medicine, University of Bonn, 53111, Bonn, Germany.,Department of Cranio-Maxillofacial Surgery, Center of Dento-Maxillo-Facial Medicine, University of Bonn, 53111, Bonn, Germany
| | - Christoph Bourauel
- Department of Oral Technology, School of Dentistry, University of Bonn, 53111, Bonn, Germany
| | - Søren Jepsen
- Department of Periodontology, Operative and Preventive Dentistry, Center of Dento-Maxilo-Facial Medicine, University of Bonn, Welschnonnenstr. 17, 53111, Bonn, Germany
| | - James Deschner
- Department of Periodontology and Operative Dentistry, University of Mainz, 55131, Mainz, Germany
| | - Marjan Nokhbehsaim
- Section of Experimental Dento-Maxillo-Facial Medicine, Center of Dento-Maxillo-Facial Medicine, University of Bonn, 53111, Bonn, Germany
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Benalcázar Jalkh EB, Parra M, Torroni A, Nayak VV, Tovar N, Castellano A, Badalov RM, Bonfante EA, Coelho PG, Witek L. Effect of supplemental acid-etching on the early stages of osseointegration: A preclinical model. J Mech Behav Biomed Mater 2021; 122:104682. [PMID: 34311324 DOI: 10.1016/j.jmbbm.2021.104682] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/03/2021] [Accepted: 06/30/2021] [Indexed: 11/17/2022]
Abstract
PURPOSE To evaluate the effect of two surface modifications on early osseointegration parameters of conical implants in a translational pre-clinical model. MATERIALS AND METHODS Conical implants with progressive trapezoidal threads and healing chambers were evaluated consisting of two different surface conditions: 1) Implacil surface (IMP Sur), and 2) Implacil surface + Supplemental Acid-etching (IMP Sur + AE). Surface characterization comprised of the evaluation of roughness parameters (Sa, Sq and Sdr), surface energy and contact angle. Subsequently, implants were installed in the ilium crest of nine female sheep (weighing ~65 kg). Torque out, histological and histomorphometric analyses were conducted after 3 and 6 weeks in-vivo. The percentage of bone to implant contact (%BIC) and bone area fraction occupancy within implant threads (%BAFO) were quantified, and the results were analyzed using a general linear mixed model analysis as function of surface treatment and time in-vivo. RESULTS Supplemental acid etching significantly increased Sa and Sq roughness parameters without compromising the surface energy or contact angle, and no significant differences with respect to Sdr. Torque-out testing yielded significantly higher values for IMP Sur + AE in comparison to the IMP Sur at 3- (62.78 ± 15 and 33.49 ± 15 N.cm, respectively) and 6-weeks (60.74 ± 15 and 39.80 ± 15 N.cm, respectively). Histological analyses depicted similar osseointegration features for both surfaces, where an intramembranous-type healing pattern was observed. At histomorphometric analyses, IMP Sur + AE implants yielded higher values of BIC in comparison to IMP Sur at 3- (40.48 ± 38 and 27.98 ± 38%, respectively) and 6-weeks (45.86 ± 38 and 34.46 ± 38%, respectively). Both groups exhibited a significant increase in %BAFO from 3 (~35%) to 6 weeks (~44%), with no significant differences between surface treatments. CONCLUSION Supplemental acid-etching and its interplay with implant thread design, positively influenced the BIC and torque-out resistance at early stages of osseointegration.
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Affiliation(s)
- Ernesto B Benalcázar Jalkh
- University of Sao Paulo - Bauru School of Dentistry, Department of Prosthodontics and Periodontology, Bauru, SP, Brazil; Department of Biomaterials, New York University College of Dentistry, New York, NY, USA
| | - Marcelo Parra
- PhD Program in Morphological Sciences, Center of Excellence in Morphological and Surgical Studies Faculty of Medicine, Universidad de La Frontera, Temuco, Chile; Faculty of Dentistry, Universidad de La Frontera, Temuco, Chile
| | - Andrea Torroni
- Hansjörg Wyss Department of Plastic Surgery, New York University School of Medicine, New York, NY, USA
| | - Vasudev Vivekanand Nayak
- Department of Biomaterials, New York University College of Dentistry, New York, NY, USA; Department of Mechanical and Aerospace Engineering, New York University Tandon School of Engineering, Brooklyn, NY, USA
| | - Nick Tovar
- Department of Biomaterials, New York University College of Dentistry, New York, NY, USA; Department of Oral and Maxillofacial Surgery, New York University, Langone Medical Center and Bellevue Hospital Center, New York, NY, USA
| | - Arthur Castellano
- Mackenzie Evangelical School of Medicine Paraná, Curitiba, Brazil; Federal University of Parana, Curitiba, Brazil
| | - Rafael M Badalov
- Department of Biomaterials, New York University College of Dentistry, New York, NY, USA
| | - Estevam A Bonfante
- University of Sao Paulo - Bauru School of Dentistry, Department of Prosthodontics and Periodontology, Bauru, SP, Brazil
| | - Paulo G Coelho
- Department of Biomaterials, New York University College of Dentistry, New York, NY, USA; Hansjörg Wyss Department of Plastic Surgery, New York University School of Medicine, New York, NY, USA; Department of Mechanical and Aerospace Engineering, New York University Tandon School of Engineering, Brooklyn, NY, USA
| | - Lukasz Witek
- Department of Biomaterials, New York University College of Dentistry, New York, NY, USA; Department of Biomedical Engineering, New York University Tandon School of Engineering, Brooklyn, NY, USA.
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Ozcan EC, Gul M, Dundar S, Bozoglan A, Karasu N, Bal A, Gunes N, Bingul MB. Effects of local application of the ankaferd blood stopper on osseointegration in three different surface titanium implants. J Oral Biol Craniofac Res 2021; 11:524-528. [PMID: 34377660 DOI: 10.1016/j.jobcr.2021.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/14/2021] [Accepted: 07/15/2021] [Indexed: 10/20/2022] Open
Abstract
Objective Researchs of the effects of ankaferd blood stopper (ABS) on bone healing metabolism have revealed that it affects bone regeneration positively. The exact mechanism by which this positive effect on bone tissue metabolism is not known. The aim of this study is to biomechanic and biochemical analysis of the effects of the local ABS application on osseointegration of 3 different surfaced titanium implants. Material & Methods Spraque dawley rats were divided machined surfaced (MS) (n = 10), sandblasted and large acid grid (SLA) (n = 10) and resorbable blast material (RBM) (n = 10) surfaced implants. ABS applied locally during the surgical application of the titanium implant before insertion in bone sockets. After 4 weeks experimental period the rats sacrificed and implants with surrounding bone tissues were removed to reverse torque analysis (Newton), blood samples collected to biochemical analysis (ALP, calcium, P). Results Biomechanic bone implant contact ratio detected higher in SLA surfaced implants compared with the RBM and controls (P < 0,05). Phosphor levels detected lower in RBM implant group compared with the controls and SLA (P < 0,05). Additionally; phosphor levels detected highly in controls compared with the RBM implants. Conclusion According the biomechanical parameters ABS may be more effective in SLA and RBM surfaced implants when locally applied.
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Affiliation(s)
- Erhan Cahit Ozcan
- Firat University, Faculty of Medicine, Department of Esthetic, Plastic and Reconstructive Surgery, Elazig, Turkiye
| | - Mehmet Gul
- Sanliurfa Harran University, Faculty of Dentistry, Department of Periodontology, Sanliurfa, Turkiye
| | - Serkan Dundar
- Firat University, Faculty of Dentistry, Department of Periodontology, Elazig, Turkiye
| | - Alihan Bozoglan
- Firat University, Faculty of Dentistry, Department of Periodontology, Elazig, Turkiye
| | - Necmettin Karasu
- Afyonkarahisar Health Sciences University, Faculty of Medicine, Department of Esthetic, Plastic and Reconstructive Surgery, Afyonkarahisar, Turkiye
| | - Ali Bal
- Private Practice, Department of Esthetic, Plastic and Reconstructive Surgery, Istanbul, Turkiye
| | - Nedim Gunes
- Dicle University, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Diyarbakir, Turkiye
| | - Muhammet Bahattin Bingul
- Sanliurfa Harran University, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Sanliurfa, Turkiye
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Damerau JM, Bierbaum S, Wiedemeier D, Korn P, Smeets R, Jenny G, Nadalini J, Stadlinger B. A systematic review on the effect of inorganic surface coatings in large animal models and meta-analysis on tricalcium phosphate and hydroxyapatite on periimplant bone formation. J Biomed Mater Res B Appl Biomater 2021; 110:157-175. [PMID: 34272804 PMCID: PMC9292919 DOI: 10.1002/jbm.b.34899] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/15/2021] [Accepted: 06/21/2021] [Indexed: 12/25/2022]
Abstract
The aim of the present systematic review was to analyse studies using inorganic implant coatings and, in a meta‐analysis, the effect of specifically tricalcium phosphate (TCP) and hydroxyapatite (HA) implant surface coatings on bone formation according to the PRISMA criteria. Inclusion criteria were the comparison to rough surfaced titanium implants in large animal studies at different time points of healing. Forty studies met the inclusion criteria for the systematic review. Fifteen of these analyzed the bone‐to‐implant contact (BIC) around the most investigated inorganic titanium implant coatings, namely TCP and HA, and were included in the meta‐analysis. The results of the TCP group show after 14 days a BIC being 3.48% points lower compared with the reference surface. This difference in BIC decreases to 0.85% points after 21–28 days. After 42–84 days, the difference in BIC of 13.79% points is in favor of the TCP‐coatings. However, the results are not statistically significant, in part due to the fact that the variability between the studies increased over time. The results of the HA group show a significant difference in mean BIC of 6.94% points after 14 days in favor of the reference surface. After 21–28 days and 42–84 days the difference in BIC is slightly in favor of the test group with 1.53% points and 1.57% points, respectively, lacking significance. In large animals, there does not seem to be much effect of TCP‐coated or HA‐coated implants over uncoated rough titanium implants in the short term.
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Affiliation(s)
- Jeanne-Marie Damerau
- Clinic of Cranio-Maxillofacial and Oral Surgery, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Susanne Bierbaum
- Max Bergmann Center of Biomaterials, Technische Universität Dresden, Dresden, Germany.,International Medical College, Münster, Germany
| | - Daniel Wiedemeier
- Statistical Services, Center for Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Paula Korn
- Department of Oral and Maxillofacial Surgery Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Ralf Smeets
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Gregor Jenny
- Clinic of Cranio-Maxillofacial and Oral Surgery, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Johanna Nadalini
- Clinic of Cranio-Maxillofacial and Oral Surgery, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Bernd Stadlinger
- Clinic of Cranio-Maxillofacial and Oral Surgery, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
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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
Surface modification of orthopedic and dental implants has been demonstrated to be an effective strategy to accelerate bone healing at early implantation times. Among the different alternatives, coating implants with a layer of hydroxyapatite (HAp) is one of the most used techniques, due to its excellent biocompatibility and osteoconductive behavior. The composition and crystalline structure of HAp allow for numerous ionic substitutions that provide added value, such as antibiotic properties or osteoinduction. In this article, we will review and critically analyze the most important advances in the field of substituted hydroxyapatite coatings. In recent years substituted HAp coatings have been deposited not only on orthopedic prostheses and dental implants, but also on macroporous scaffolds, thus expanding their applications towards bone regeneration therapies. Besides, the capability of substituted HAps to immobilize proteins and growth factors by non-covalent interactions has opened new possibilities for preparing hybrid coatings that foster bone healing processes. Finally, the most important in vivo outcomes will be discussed to understand the prospects of substituted HAp coatings from a clinical point of view.
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Affiliation(s)
- Daniel Arcos
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria del Hospital 12 de Octubre i + 12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain. and CIBER de Bioingeniería Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - María Vallet-Regí
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria del Hospital 12 de Octubre i + 12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain. and CIBER de Bioingeniería Biomateriales y Nanomedicina (CIBER-BBN), Spain
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Evaluation of New Bone Formation Using Autogenous Tooth Bone Graft Combined with Platelet-Rich Fibrin in Calvarial Defects. J Craniofac Surg 2020; 30:1662-1666. [PMID: 30939548 DOI: 10.1097/scs.0000000000005413] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The purpose of the present study was to evaluate the contributions of autogenous tooth bone graft (ATBG) combined with platelet-rich fibrin (PRF) on new bone formation and bone morphogenetic protein (BMP)-2 in rabbit calvarial defects. Twelve male New Zealand rabbits were used in this study. Three circular bone defects were prepared in each rabbit with a drill. These defects were divided into 3 groups: control, treated with ATBG, and treated with ATBG+PRF. The animals were sacrificed at 28 days. Samples were evaluated by histomorphometric analyses and total augmented area, new bone area and bone density were calculated. In addition, expression of BMP-2 was determined by immunohistochemical staining. The total augmented area, new bone area and bone density were significantly greater in the ATBG group than in the control group (P <0.05). Also, these values were significantly higher in the ATBG+PRF group than the ATBG group (P <0.05). Test groups demonstrated significantly increased BMP-2 levels compared with the control group (P <0.05). The present study suggested that ATBG combined with PRF significantly increased the new bone formation and enhanced bone healing in cranial defects.
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10
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Osteointegrative and microgeometric comparison between micro-blasted and alumina blasting/acid etching on grade II and V titanium alloys (Ti-6Al-4V). J Mech Behav Biomed Mater 2019; 97:288-295. [PMID: 31146202 DOI: 10.1016/j.jmbbm.2019.05.026] [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: 09/16/2018] [Revised: 03/20/2019] [Accepted: 05/16/2019] [Indexed: 11/20/2022]
Abstract
This study evaluated the effect of alumina-blasted/acid-etched (AB/AE) or microabrasive blasting (C3-Microblasted) surface treatment on the osseointegration of commercially-pure Ti (grade II) and Ti-6Al-4V alloy (grade V) implants compared to as-machined surfaces. Surface characterization was performed by scanning electron microscopy and optical interferometry (IFM) to determine roughness parameters (Sa and Sq, n = 3 per group). One-hundred forty-four implants were placed in the radii of 12 beagle dogs, for histological (n = 72, bone-to-implant contact - BIC and bone-area-fraction occupancy -BAFO) and torque to interface failure test at 3 and 6 weeks (n = 72). SEM and IFM revealed a significant increase in surface texture for AB/AE and C3-Microblasted surfaces compared to machined surface, regardless of titanium substrate. Torque-to-interface failure test showed significant increase in values from as-machined to AB/AE and to C3-Microblasted. Considering time in vivo, alloy grade, and surface treatment, the C3-microblasted presented higher mean BIC values relative to AB/AE and machined surfaces for both alloy types. BAFO levels were significantly higher for both textured surfaces groups relative to the machined group at 3 weeks, but differences were not significant between the three surfaces for each alloy type at 6 weeks. Surface treatment resulted in roughness that improved osseointegration in Grade II and V titanium substrates.
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11
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Yurttutan ME, Keskin A. Evaluation of the effects of different sand particles that used in dental implant roughened for osseointegration. BMC Oral Health 2018; 18:47. [PMID: 29554893 PMCID: PMC5859722 DOI: 10.1186/s12903-018-0509-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 03/07/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Successful dental implant treatment is directly related to osseointegration. In achieving osseointegration, the surface property of the implant is of great importance. Sandblasting is the most commonly used basic method for modifying the surface. Many companies use different sand particles for surface roughening and claim their sand is the best. This leads clinicians to mix their minds in product selection. In this study, we tried to find the appropriate sand material by working objectively without praising any brand. We believe that the results of the study will help clinicians choose the right dental implant. In this study, machined-surfaced implants and implants sandblasted with Aluminum oxide (Al2O3), Titanium dioxide (TiO2) and Silicon dioxide (SiO2) were compared via biomechanical testing. METHODS For the study, four 2 year-old sheep, weighing 45 kilograms (kg), were used. Eight implants (Al2O3, TiO2, and SiO2 sandblasted implants and machined-surfaced implants), each with different surface characteristics, were inserted into the bilateral tibia of each sheep under general anesthesia. Results of the initial Resonance Frequency Analysis (RFA) were recorded just after implant insertion. The sheep were then randomly divided into two groups, each with 2 sheep, to undergo either a 1-month or a 3-month assessment. At the end of the designated evaluation period, RFA and removal torque tests were performed. RESULTS Although there were no statistically significant differences between the groups, the implants sandblasted with Al2O3 showed a higher Implant Stability Quotient (ISQ) and removal torque value at the end of the 1st and 3rd month. CONCLUSIONS In short, the results of the study demonstrate that Aluminum oxide is superior to other sand particles.
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Affiliation(s)
- Mehmet Emre Yurttutan
- Faculty of Dentistry, Department of Oral and Maxillofacial Surgery, Ankara University, Atatürk Mah. Gazi Cad. No:19, Ankara, Turkey.
| | - Ahmet Keskin
- Faculty of Dentistry, Department of Oral and Maxillofacial Surgery, Ankara University, Atatürk Mah. Gazi Cad. No:19, Ankara, Turkey
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Mg substituted apatite coating from alkali conversion of acidic calcium phosphate. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:408-417. [PMID: 27770910 DOI: 10.1016/j.msec.2016.09.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 07/01/2016] [Accepted: 09/08/2016] [Indexed: 11/20/2022]
Abstract
In this work, two solutions were developed: the first, rich in Ca2+, PO43- ions and the second, rich in Ca2+, PO43- and Mg2+, defined as Mg-modified precursor solution. For each Mg-modified precursor solution, the concentrations of Mg2+ ions were progressively increased by 5%, 10% and 15%wt. The aims of this research were to investigate the influence of magnesium ions substitution in calcium phosphate coatings on titanium surface and to evaluate these coatings by bioactivity assay in McCoy culture medium. The obtained coatings were characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analysis, and the presence of Mg ions was confirmed by the inductively coupled plasma atomic emission spectroscopy (ICP) analysis. In vitro bioactivity assay in McCoy culture medium showed bioactivity after 14days in incubation for the HA and 10% Mg-monetite coatings. The high chemical stability of Mg-HA coatings was verified by the bioactivity assays, and no bone-like apatite deposition, characteristic of bioactivity, was observed for Mg-HA coatings, for the time period used in this study.
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Gehrke SA, Ramírez-Fernandez MP, Granero Marín JM, Barbosa Salles M, Del Fabbro M, Calvo Guirado JL. A comparative evaluation between aluminium and titanium dioxide microparticles for blasting the surface titanium dental implants: an experimental study in rabbits. Clin Oral Implants Res 2016; 29:802-807. [DOI: 10.1111/clr.12973] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/14/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Sergio A. Gehrke
- Biotecnos Research Center; Santa Maria Brazil
- University Catholica San Antonio de Murcia (UCAM); Murcia Spain
| | - María P. Ramírez-Fernandez
- International Dentistry Research Cathedra; Faculty of Medicine; San Antonio Catholic University of Murcia (UCAM); Murcia Spain
| | | | | | - Massimo Del Fabbro
- Research Center in Oral Health; Department of Biomedical, Surgical and Dental Sciences; Università degli Studi di Milano; IRCCS Istituto Ortopedico Galeazzi; Milano Italy
| | - José Luis Calvo Guirado
- International Dentistry Research Cathedra; Faculty of Medicine & Dentistry; San Antonio Catholic University of Murcia (UCAM); Murcia Spain
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In vivo biofunctionalization of titanium patient-specific implants with nano hydroxyapatite and other nano calcium phosphate coatings: A systematic review. J Craniomaxillofac Surg 2016; 44:400-12. [DOI: 10.1016/j.jcms.2015.12.004] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 11/05/2015] [Accepted: 12/11/2015] [Indexed: 12/22/2022] Open
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Bowers M, Yoo D, Marin C, Gil L, Shabaka N, Goldstein M, Janal M, Tovar N, Hirata R, Bonfante E, Coelho P. Surface characterization and in vivo evaluation of laser sintered and machined implants followed by resorbable-blasting media process: A study in sheep. Med Oral Patol Oral Cir Bucal 2016; 21:e206-13. [PMID: 26827064 PMCID: PMC4788801 DOI: 10.4317/medoral.20946] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 10/17/2015] [Indexed: 12/03/2022] Open
Abstract
Background This study aimed to compare the histomorphometric and histological bone response to laser-sintered implants followed by resorbable-blasting media (RBM) process relative to standard machined/RBM surface treated implants. Material and Methods Six male sheep (n=6) received 2 Ti-6Al-4V implants (1 per surface) in each side of the mandible for 6 weeks in vivo. The histomorphometric parameters bone-implant contact (BIC) and bone area fraction occupancy (BAFO) were evaluated. Results Optical interferometry revealed higher Sa and Sq values for the laser-sintered/RBM surface in relation to standard/RBM implants. No significant differences in BIC were observed between the two groups (p>0.2), but significantly higher BAFO was observed for standard/RBM implants (p<0.01). Conclusions The present study demonstrated that both surfaces were biocompatible and osseoconductive, and the combination of laser sintering and RBM has no advantage over the standard machined implants with subsequent RBM. Key words:Dental implants, osseointegration, resorbable- blasting media, sheep, in vivo.
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Affiliation(s)
- Michelle Bowers
- 345 E 24th Street, 10010, Biomaterials and Biomimetics, New York University, New York, NY, USA, rh1694@@nyu.edu
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Coelho PG, Gil LF, Neiva R, Jimbo R, Tovar N, Lilin T, Bonfante EA. Microrobotized blasting improves the bone-to-textured implant response. A preclinical in vivo biomechanical study. J Mech Behav Biomed Mater 2015; 56:175-182. [PMID: 26703231 DOI: 10.1016/j.jmbbm.2015.11.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 11/06/2015] [Accepted: 11/09/2015] [Indexed: 01/25/2023]
Abstract
This study evaluated the effect of microrobotized blasting of titanium endosteal implants relative to their manually blasted counterparts. Two different implant systems were utilized presenting two different implant surfaces. Control surfaces (Manual) were fabricated by manually grit blasting the implant surfaces while experimental surfaces (Microblasted) were fabricated through a microrobotized system that provided a one pass grit blasting routine. Both surfaces were created with the same ~50µm average particle size alumina powder at ~310KPa. Surfaces were then etched with 37% HCl for 20min, washed, and packaged through standard industry procedures. The surfaces were characterized through scanning electron microscopy (SEM) and optical interferometry, and were then placed in a beagle dog radius model remaining in vivo for 3 and 6 weeks. The implant removal torque was recorded and statistical analysis evaluated implant system and surface type torque levels as a function of time in vivo. Histologic sections were qualitatively evaluated for tissue response. Electron microscopy depicted textured surfaces for both manual and microblasted surfaces. Optical interferometry showed significantly higher Sa, Sq, values for the microblasted surface and no significant difference for Sds and Sdr values between surfaces. In vivo results depicted that statistically significant gains in biomechanical fixation were obtained for both implant systems tested at 6 weeks in vivo, while only one system presented significant biomechanical gain at 3 weeks. Histologic sections showed qualitative higher amounts of new bone forming around microblasted implants relative to the manually blasted group. Microrobotized blasting resulted in higher biomechanical fixation of endosteal dental implants and should be considered as an alternative for impant surface manufacturing.
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Affiliation(s)
- Paulo G Coelho
- Department of Biomaterials and Biomimetics, New York University, 433 1st Ave., Room 844, New York, NY 10010, USA; Director for Research, Department of Periodontology and Implant Dentistry, New York University College of Dentistry, 345E 24th Street, New York, NY 10010, USA; Affiliated Faculty, Department of Engineering, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, United Arab Emirates
| | - Luiz F Gil
- Department of Dentistry, Division of Oral and Maxillofacial Surgery, Universidade Federal de Santa Catarina, R. Eng. Agronômico Andrei Cristian Ferreira, s/n-Trindade, Florianópolis, SC 88040-900, Brazil
| | - Rodrigo Neiva
- Department of Periodontology, University of Florida at Gainesville, 1395 Center Dr, Gainesville, FL 32610, USA
| | - Ryo Jimbo
- Department of Prosthodontics, Malmo University, Malmo 205 06, Sweden
| | - Nick Tovar
- Department of Biomaterials and Biomimetics, New York University, 433 1st Ave., Room 844, New York, NY 10010, USA
| | - Thomas Lilin
- École Nationale Vétérinaire d׳Alfort, 7 Avenue du Général de Gaulle, 94704 Mainsons-Alfort, France
| | - Estevam A Bonfante
- Department of Prosthodontics, University of Sao Paulo - Bauru College of Dentistry, Alameda Otávio Pinheiro Brisola 9-75, Bauru, SP 17.012-901, Brazil.
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Simoncelli E, Barbieri D, Laurita R, Liguori A, Stancampiano A, Viola L, Tonini R, Gherardi M, Colombo V. Preliminary investigation of the antibacterial efficacy of a handheld Plasma Gun source for endodontic procedures. CLINICAL PLASMA MEDICINE 2015. [DOI: 10.1016/j.cpme.2015.11.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Ishack S, Mediero A, Wilder T, Ricci JL, Cronstein BN. Bone regeneration in critical bone defects using three-dimensionally printed β-tricalcium phosphate/hydroxyapatite scaffolds is enhanced by coating scaffolds with either dipyridamole or BMP-2. J Biomed Mater Res B Appl Biomater 2015; 105:366-375. [PMID: 26513656 DOI: 10.1002/jbm.b.33561] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 09/18/2015] [Accepted: 10/11/2015] [Indexed: 01/24/2023]
Abstract
Bone defects resulting from trauma or infection need timely and effective treatments to restore damaged bone. Using specialized three-dimensional (3D) printing technology we have created custom 3D scaffolds of hydroxyapatite (HA)/beta-tri-calcium phosphate (β-TCP) to promote bone repair. To further enhance bone regeneration we have coated the scaffolds with dipyridamole, an agent that increases local adenosine levels by blocking cellular uptake of adenosine. Nearly 15% HA:85% β-TCP scaffolds were designed using Robocad software, fabricated using a 3D Robocasting system, and sintered at 1100°C for 4 h. Scaffolds were coated with BMP-2 (200 ng mL-1 ), dypiridamole 100 µM or saline and implanted in C57B6 and adenosine A2A receptor knockout (A2AKO) mice with 3 mm cranial critical bone defects for 2-8 weeks. Dipyridamole release from scaffold was assayed spectrophotometrically. MicroCT and histological analysis were performed. Micro-computed tomography (microCT) showed significant bone formation and remodeling in HA/β-TCP-dipyridamole and HA/β-TCP-BMP-2 scaffolds when compared to scaffolds immersed in vehicle at 2, 4, and 8 weeks (n = 5 per group; p ≤ 0.05, p ≤ 0.05, and p ≤ 0.01, respectively). Histological analysis showed increased bone formation and a trend toward increased remodeling in HA/β-TCP- dipyridamole and HA/β-TCP-BMP-2 scaffolds. Coating scaffolds with dipyridamole did not enhance bone regeneration in A2AKO mice. In conclusion, scaffolds printed with HA/β-TCP promote bone regeneration in critical bone defects and coating these scaffolds with agents that stimulate A2A receptors and growth factors can further enhance bone regeneration. These coated scaffolds may be very useful for treating critical bone defects due to trauma, infection or other causes. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 366-375, 2017.
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Affiliation(s)
- Stephanie Ishack
- Department of Biomaterials and Biomimetics, NYU College of Dentistry, New York, New York
| | - Aranzazu Mediero
- Division of Translational Medicine, Department of Medicine, NYU-Langone Medical Center, New York, New York
| | - Tuere Wilder
- Division of Translational Medicine, Department of Medicine, NYU-Langone Medical Center, New York, New York
| | - John L Ricci
- Department of Biomaterials and Biomimetics, NYU College of Dentistry, New York, New York
| | - Bruce N Cronstein
- Division of Translational Medicine, Department of Medicine, NYU-Langone Medical Center, New York, New York
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Beutel BG, Danna NR, Granato R, Bonfante EA, Marin C, Tovar N, Suzuki M, Coelho PG. Implant design and its effects on osseointegration over time within cortical and trabecular bone. J Biomed Mater Res B Appl Biomater 2015; 104:1091-7. [PMID: 26034012 DOI: 10.1002/jbm.b.33463] [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: 12/18/2014] [Revised: 05/07/2015] [Accepted: 05/13/2015] [Indexed: 01/03/2023]
Abstract
Healing chambers present at the interface between implant and bone have become a target for improving osseointegration. The objective of the present study was to compare osseointegration of several implant healing chamber configurations at early time points and regions of interest within bone using an in vivo animal femur model. Six implants, each with a different healing chamber configuration, were surgically implanted into each femur of six skeletally mature beagle dogs (n = 12 implants per dog, total n = 72). The implants were harvested at 3 and 5 weeks post-implantation, non-decalcified processed to slides, and underwent histomorphometry with measurement of bone-to-implant contact (BIC) and bone area fraction occupied (BAFO) within healing chambers at both cortical and trabecular bone sites. Microscopy demonstrated predominantly woven bone at 3 weeks and initial replacement of woven bone by lamellar bone by 5 weeks. BIC and BAFO were both significantly increased by 5 weeks (p < 0.001), and significantly higher in cortical than trabecular bone (p < 0.001). The trapezoidal healing chamber design demonstrated a higher BIC than other configurations. Overall, a strong temporal and region-specific dependence of implant osseointegration in femurs was noted. Moreover, the findings suggest that a trapezoidal healing chamber configuration may facilitate the best osseointegration. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 104B: 1091-1097, 2016.
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Affiliation(s)
- Bryan G Beutel
- Department of Biomaterials and Biomimetics, New York University, New York, New York, 10010
| | - Natalie R Danna
- Department of Biomaterials and Biomimetics, New York University, New York, New York, 10010
| | - Rodrigo Granato
- Department of Dentistry, UNIGRANRIO University, School of Health Sciences, 25071-202 Duque de Caxias, Rua da Lapa, 86, Centro, RJ, Brazil
| | - Estevam A Bonfante
- Department of Prosthodontics, University of Sao Paulo, Bauru College of Dentistry, Al. Dr. Octávio Pinheiro Brisola, 9-75, Bauru, Sao Paulo, 17012-901, Brazil
| | - Charles Marin
- Department of Dentistry, UNIGRANRIO University, School of Health Sciences, 25071-202 Duque de Caxias, Rua da Lapa, 86, Centro, RJ, Brazil
| | - Nick Tovar
- Department of Biomaterials and Biomimetics, New York University, New York, New York, 10010
| | - Marcelo Suzuki
- Department of Prosthodontics and Operative Dentistry, Tufts University School of Dental Medicine, Boston, Massachusetts, 02111
| | - Paulo G Coelho
- Department of Biomaterials and Biomimetics, New York University, New York, New York, 10010
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Assessment of Atmospheric Pressure Plasma Treatment for Implant Osseointegration. BIOMED RESEARCH INTERNATIONAL 2015; 2015:761718. [PMID: 26090443 PMCID: PMC4452268 DOI: 10.1155/2015/761718] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 01/18/2015] [Accepted: 01/23/2015] [Indexed: 01/05/2023]
Abstract
This study assessed the osseointegrative effects of atmospheric pressure plasma (APP) surface treatment for implants in a canine model. Control surfaces were untreated textured titanium (Ti) and calcium phosphate (CaP). Experimental surfaces were their 80-second air-based APP-treated counterparts. Physicochemical characterization was performed to assess topography, surface energy, and chemical composition. One implant from each control and experimental group (four in total) was placed in one radius of each of the seven male beagles for three weeks, and one implant from each group was placed in the contralateral radius for six weeks. After sacrifice, bone-to-implant contact (BIC) and bone area fraction occupancy (BAFO) were assessed. X-ray photoelectron spectroscopy showed decreased surface levels of carbon and increased Ti and oxygen, and calcium and oxygen, posttreatment for Ti and CaP surfaces, respectively. There was a significant (P < 0.001) increase in BIC for APP-treated textured Ti surfaces at six weeks but not at three weeks or for CaP surfaces. There were no significant (P = 0.57) differences for BAFO between treated and untreated surfaces for either material at either time point. This suggests that air-based APP surface treatment may improve osseointegration of textured Ti surfaces but not CaP surfaces. Studies optimizing APP parameters and applications are warranted.
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Calcium orthophosphate deposits: Preparation, properties and biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 55:272-326. [PMID: 26117762 DOI: 10.1016/j.msec.2015.05.033] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 03/21/2015] [Accepted: 05/08/2015] [Indexed: 01/12/2023]
Abstract
Since various interactions among cells, surrounding tissues and implanted biomaterials always occur at their interfaces, the surface properties of potential implants appear to be of paramount importance for the clinical success. In view of the fact that a limited amount of materials appear to be tolerated by living organisms, a special discipline called surface engineering was developed to initiate the desirable changes to the exterior properties of various materials but still maintaining their useful bulk performances. In 1975, this approach resulted in the introduction of a special class of artificial bone grafts, composed of various mechanically stable (consequently, suitable for load bearing applications) implantable biomaterials and/or bio-devices covered by calcium orthophosphates (CaPO4) to both improve biocompatibility and provide an adequate bonding to the adjacent bones. Over 5000 publications on this topic were published since then. Therefore, a thorough analysis of the available literature has been performed and about 50 (this number is doubled, if all possible modifications are counted) deposition techniques of CaPO4 have been revealed, systematized and described. These CaPO4 deposits (coatings, films and layers) used to improve the surface properties of various types of artificial implants are the topic of this review.
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Osseointegration of Plateau Root Form Implants: Unique Healing Pathway Leading to Haversian-Like Long-Term Morphology. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 881:111-28. [PMID: 26545747 DOI: 10.1007/978-3-319-22345-2_7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Endosteal dental implants have been utilized as anchors for dental and orthopedic rehabilitations for decades with one of the highest treatment success rates in medicine. Such success is due to the phenomenon of osseointegration where after the implant surgical placement, bone healing results into an intimate contact between bone and implant surface. While osseointegration is an established phenomenon, the route which osseointegration occurs around endosteal implants is related to various implant design factors including surgical instrumentation and implant macro, micro, and nanometer scale geometry. In an implant system where void spaces (healing chambers) are present between the implant and bone immediately after placement, its inherent bone healing pathway results in unique opportunities to accelerate the osseointegration phenomenon at the short-term and its maintenance on the long-term through a haversian-like bone morphology and mechanical properties.
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Osseointegration: hierarchical designing encompassing the macrometer, micrometer, and nanometer length scales. Dent Mater 2014; 31:37-52. [PMID: 25467952 DOI: 10.1016/j.dental.2014.10.007] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 09/14/2014] [Accepted: 10/31/2014] [Indexed: 01/14/2023]
Abstract
OBJECTIVE Osseointegration has been a proven concept in implant dentistry and orthopedics for decades. Substantial efforts for engineering implants for reduced treatment time frames have focused on micrometer and most recently on nanometer length scale alterations with negligible attention devoted to the effect of both macrometer design alterations and surgical instrumentation on osseointegration. This manuscript revisits osseointegration addressing the individual and combined role of alterations on the macrometer, micrometer, and nanometer length scales on the basis of cell culture, preclinical in vivo studies, and clinical evidence. METHODS A critical appraisal of the literature was performed regarding the impact of dental implant designing on osseointegration. Results from studies with different methodological approaches and the commonly observed inconsistencies are discussed. RESULTS It is a consensus that implant surface topographical and chemical alterations can hasten osseointegration. However, the tailored combination between multiple length scale design parameters that provides maximal host response is yet to be determined. SIGNIFICANCE In spite of the overabundant literature on osseointegration, a proportional inconsistency in findings hitherto encountered warrants a call for appropriate multivariable study designing to ensure that adequate data collection will enable osseointegration maximization and/or optimization, which will possibly lead to the engineering of endosteal implant designs that can be immediately placed/loaded regardless of patient dependent conditions.
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Beutel BG, Danna NR, Gangolli R, Granato R, Manne L, Tovar N, Coelho PG. Evaluation of bone response to synthetic bone grafting material treated with argon-based atmospheric pressure plasma. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 45:484-90. [PMID: 25491854 DOI: 10.1016/j.msec.2014.09.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 09/11/2014] [Accepted: 09/30/2014] [Indexed: 11/25/2022]
Abstract
Bone graft materials are utilized to stimulate healing of bone defects or enhance osseointegration of implants. In order to augment these capabilities, various surface modification techniques, including atmospheric pressure plasma (APP) surface treatment, have been developed. This in vivo study sought to assess the effect of APP surface treatment on degradation and osseointegration of Synthograft™, a beta-tricalcium phosphate (β-TCP) synthetic bone graft. The experimental (APP-treated) grafts were subjected to APP treatment with argon for a period of 60s. Physicochemical characterization was performed by environmental scanning electron microscopy, surface energy (SE), and x-ray photoelectron spectroscopy analyses both before and after APP treatment. Two APP-treated and two untreated grafts were surgically implanted into four critical-size calvarial defects in each of ten New Zealand white rabbits. The defect samples were explanted after four weeks, underwent histological analysis, and the percentages of bone, soft tissue, and remaining graft material were quantified by image thresholding. Material characterization showed no differences in particle surface morphology and that the APP-treated group presented significantly higher SE along with higher amounts of the base material chemical elements on it surface. Review of defect composition showed that APP treatment did not increase bone formation or reduce the amount of soft tissue filling the defect when compared to untreated material. Histologic cross-sections demonstrated osteoblastic cell lines, osteoid deposition, and neovascularization in both groups. Ultimately, argon-based APP treatment did not enhance the osseointegration or degradation of the β-TCP graft. Future investigations should evaluate the utility of gases other than argon to enhance osseointegration through APP treatment.
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Affiliation(s)
- Bryan G Beutel
- New York University, Department of Biomaterials and Biomimetics, 345 East 24th Street, Room 804 S, New York, NY 10010, USA.
| | - Natalie R Danna
- New York University, Department of Biomaterials and Biomimetics, 345 East 24th Street, Room 804 S, New York, NY 10010, USA
| | - Riddhi Gangolli
- New York University, Department of Biomaterials and Biomimetics, 345 East 24th Street, Room 804 S, New York, NY 10010, USA
| | - Rodrigo Granato
- New York University, Department of Biomaterials and Biomimetics, 345 East 24th Street, Room 804 S, New York, NY 10010, USA
| | - Lakshmiprada Manne
- New York University, Department of Biomaterials and Biomimetics, 345 East 24th Street, Room 804 S, New York, NY 10010, USA
| | - Nick Tovar
- New York University, Department of Biomaterials and Biomimetics, 345 East 24th Street, Room 804 S, New York, NY 10010, USA
| | - Paulo G Coelho
- New York University, Department of Biomaterials and Biomimetics, 345 East 24th Street, Room 804 S, New York, NY 10010, USA
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Galli S, Jimbo R, Tovar N, Yoo DY, Anchieta RB, Yamaguchi S, Coelho PG. The effect of osteotomy dimension on osseointegration to resorbable media-treated implants: A study in the sheep. J Biomater Appl 2014; 29:1068-74. [DOI: 10.1177/0885328214553958] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The drilling technique and the surface characteristics are known to influence the healing times of oral implants. The influence of osteotomy dimension on osseointegration of microroughned implant surfaces treated with resorbable blasting media was tested in an in vivo model. Ninety-six implants (ø4.5 mm, 8 mm in length) with resorbable blasting media-treated surfaces were placed in the ileum of six sheep. The final osteotomy diameters were 4.6 mm (reamer), 4.1 mm (loose), 3.7 mm (medium), and 3.2 mm (tight). After three and six weeks of healing, the implants were biomechanically tested and histologically evaluated. Statistical analysis was performed using Page L trend test for ordered and paired sample and linear regression, with significance level at p < 0.05. An overall increase in all dependent variables was observed with the reduction of osteotomy diameter. In addition, all osseointegration scores increased over time. At three weeks, the retention was significantly higher for smaller osteotomies. The histological sections depicted intimate contact of bone with all the implant surfaces and osteoblast lines were visible in all sections. The resorbable blasting media microroughed surfaces achieved successful osseointegration for all the instrumentation procedures tested, with higher osseointegration scores for the high insertion torque group.
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Affiliation(s)
- Silvia Galli
- Department of Prosthodontics, Malmö University, Malmö, Sweden
| | - Ryo Jimbo
- Department of Prosthodontics, Malmö University, Malmö, Sweden
| | - Nick Tovar
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
| | - Daniel Y Yoo
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
| | - Rodolfo B Anchieta
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
| | - Satoshi Yamaguchi
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
| | - Paulo G Coelho
- Department of Biomaterials and Biomimetics, New York University, New York, NY, USA
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Abstract
This review describes the contemporary aspects of plasma application in dentistry. Previous studies on plasma applications were classified into two categories, surface treatment and direct applications, and were reviewed, respectively according to the approach. The current review discussed modification of dental implant surface, enhancing of adhesive qualities, enhancing of polymerization, surface coating and plasma cleaning under the topics of surface treatment. Microbicidal activities, decontamination, root canal disinfection and tooth bleaching were reviewed as direct applications with other miscellaneous ones. Non-thermal atmospheric pressure plasma was of particular focus since it is gaining considerable attention due to the possibility for its use in living tissues. Future perspectives have also been discussed briefly. Although it is still not popular among dentists, plasma has shown promises in several areas of dentistry and is now opening a new era of plasma dentistry.
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Surmenev RA, Surmeneva MA, Ivanova AA. Significance of calcium phosphate coatings for the enhancement of new bone osteogenesis--a review. Acta Biomater 2014; 10:557-79. [PMID: 24211734 DOI: 10.1016/j.actbio.2013.10.036] [Citation(s) in RCA: 317] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 10/25/2013] [Accepted: 10/29/2013] [Indexed: 12/15/2022]
Abstract
A systematic analysis of results available from in vitro, in vivo and clinical trials on the effects of biocompatible calcium phosphate (CaP) coatings is presented. An overview of the most frequently used methods to prepare CaP-based coatings was conducted. Dense, homogeneous, highly adherent and biocompatible CaP or hybrid organic/inorganic CaP coatings with tailored properties can be deposited. It has been demonstrated that CaP coatings have a significant effect on the bone regeneration process. In vitro experiments using different cells (e.g. SaOS-2, human mesenchymal stem cells and osteoblast-like cells) have revealed that CaP coatings enhance cellular adhesion, proliferation and differentiation to promote bone regeneration. However, in vivo, the exact mechanism of osteogenesis in response to CaP coatings is unclear; indeed, there are conflicting reports of the effectiveness of CaP coatings, with results ranging from highly effective to no significant or even negative effects. This review therefore highlights progress in CaP coatings for orthopaedic implants and discusses the future research and use of these devices. Currently, an exciting area of research is in bioactive hybrid composite CaP-based coatings containing both inorganic (CaP coating) and organic (collagen, bone morphogenetic proteins, arginylglycylaspartic acid etc.) components with the aim of promoting tissue ingrowth and vascularization. Further investigations are necessary to reveal the relative influences of implant design, surgical procedure, and coating characteristics (thickness, structure, topography, porosity, wettability etc.) on the long-term clinical effects of hybrid CaP coatings. In addition to commercially available plasma spraying, other effective routes for the fabrication of hybrid CaP coatings for clinical use still need to be determined and current progress is discussed.
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Affiliation(s)
- Roman A Surmenev
- Department of Theoretical and Experimental Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia; Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, 70569 Stuttgart, Germany.
| | - Maria A Surmeneva
- Department of Theoretical and Experimental Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Anna A Ivanova
- Department of Theoretical and Experimental Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
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Gehrke SA, Taschieri S, Del Fabbro M, Coelho PG. Positive Biomechanical Effects of Titanium Oxide for Sandblasting Implant Surface as an Alternative to Aluminium Oxide. J ORAL IMPLANTOL 2013; 41:515-22. [PMID: 24001048 DOI: 10.1563/aaid-joi-d-13-00019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of this study was to evaluate the physico-chemical properties and the in vivo host response of a surface sandblasted with particles of titanium oxide (TiO2) followed by acid etching as an alternative to aluminium oxide. Thirty titanium disks manufactured in the same conditions as the implants and 24 conventional cylindrical implants were used. Half of the implants had a machined surface (Gcon) while in the other half; the surface was treated with particles of TiO2 followed by acid etching (Gexp). Surface characterization was assessed by scanning electron microscope (SEM), energy dispersive X-ray spectrometry (EDS), profilometry, and wettability. For the in vivo test, 12 implants of each group were implanted in the tibia of 6 rabbits, and were reverse torque tested after periods of 30 or 60 days after implantation. Following torque, SEM was utilized to assess residual bone-implant contact. The surface characterization by SEM showed a very homogeneous surface with uniform irregularities for Gexp and a small amount of residues of the blasting procedure, while Gcon presented a surface with minimal irregularities from the machining tools. Wettability test showed decreased contact angle for the Gcon relative to the Gexp. The Gexp removal torque at 30 and 60 days was 28.7%, and 33.2% higher relative to the Gcon, respectively. Blasting the surface with particles of TiO2 represents an adequate option for the surface treatment of dental implants, with minimal risk of contamination by the residual debris from the blasting procedure.
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Affiliation(s)
| | - Silvio Taschieri
- 2 Department of Health Technologies, IRCCS Istituto Ortopedico Galeazzi, Università degli Studi di Milano, Milano, Italy
| | - Massimo Del Fabbro
- 2 Department of Health Technologies, IRCCS Istituto Ortopedico Galeazzi, Università degli Studi di Milano, Milano, Italy
| | - Paulo Guilherme Coelho
- 3 Department of Periodontology and Implant Dentistry, New York University College of Dentistry, New York, New York
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29
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Marin C, Bonfante EA, Jeong R, Granato R, Giro G, Suzuki M, Heitz C, Coelho PG. Histologic and Biomechanical Evaluation of 2 Resorbable-Blasting Media Implant Surfaces at Early Implantation Times. J ORAL IMPLANTOL 2013; 39:445-53. [DOI: 10.1563/aaid-joi-d-10-00156] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study evaluated 3 implant surfaces in a dog model: (1) resorbable-blasting media + acid-etched (RBMa), alumina-blasting + acid-etching (AB/AE), and AB/AE + RBMa (hybrid). All of the surfaces were minimally rough, and Ca and P were present for the RBMa and hybrid surfaces. Following 2 weeks in vivo, no significant differences were observed for torque, bone-to-implant contact, and bone-area fraction occupied measurements. Newly formed woven bone was observed in proximity with all surfaces.
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Affiliation(s)
- Charles Marin
- Postgraduate Program in Dentistry, UNIGRANRIO University, School of Health Sciences, Duque de Caxias, RJ, Brazil
| | - Estevam A. Bonfante
- Postgraduate Program in Dentistry, UNIGRANRIO University, School of Health Sciences, Duque de Caxias, RJ, Brazil
| | - Ryan Jeong
- Department of Biomaterials and Biomimetics, New York University, New York, NY
| | - Rodrigo Granato
- Postgraduate Program in Dentistry, UNIGRANRIO University, School of Health Sciences, Duque de Caxias, RJ, Brazil
| | - Gabriela Giro
- Department of Oral Surgery and Diagnosis, Faculdade de Odontologia de Araraquara, UNESP, Araraquara, SP, Brazil
| | - Marcelo Suzuki
- Department of Prosthodontics, Tufts University School of Dental Medicine, Boston, Mass
| | - Claiton Heitz
- Department of Oral and Maxillofacial Surgery, Pontificia Universidade Catolica do Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Paulo G. Coelho
- Department of Biomaterials and Biomimetics, New York University, New York, NY
- Department of Periodontology and Implant Dentistry, New York University College of Dentistry, New York, NY
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Effect of Electrical Discharging on Formation of Nanoporous Biocompatible Layer on Ti-6Al-4V Alloys. IMPLANT DENT 2013; 22:374-9. [DOI: 10.1097/id.0b013e31829a170a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Yoo D, Tovar N, Jimbo R, Marin C, Anchieta RB, Machado LS, Montclare J, Guastaldi FPS, Janal MN, Coelho PG. Increased osseointegration effect of bone morphogenetic protein 2 on dental implants: Anin vivostudy. J Biomed Mater Res A 2013; 102:1921-7. [DOI: 10.1002/jbm.a.34862] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 06/06/2013] [Accepted: 06/13/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Daniel Yoo
- Department of Biomaterials and Biomimetics; New York University College of Dentistry; New York New York
| | - Nick Tovar
- Department of Biomaterials and Biomimetics; New York University College of Dentistry; New York New York
| | - Ryo Jimbo
- Department of Prosthodontics; Faculty of Odontology; Malmö University; Malmö Sweden
| | - Charles Marin
- Department of Dentistry; UNIGRANRIO; Duque de Caxias RJ Brazil
| | - Rodolfo B. Anchieta
- Department of Biomaterials and Biomimetics; New York University College of Dentistry; New York New York
- Sao Paulo State University; Araçatuba Dental School-UNESP; Araçatuba Sao Paulo Brazil
| | - Lucas S. Machado
- Department of Biomaterials and Biomimetics; New York University College of Dentistry; New York New York
- Sao Paulo State University; Araçatuba Dental School-UNESP; Araçatuba Sao Paulo Brazil
| | - Jin Montclare
- Polytechnic Institute of New York University; Brooklyn New York
| | - Fernando P. S. Guastaldi
- Department of Biomaterials and Biomimetics; New York University College of Dentistry; New York New York
- Sao Paulo State University; Araçatuba Dental School-UNESP; Araçatuba Sao Paulo Brazil
| | - Malvin N. Janal
- Department of Epidemiology; New York University College of Dentistry; New York New York
| | - Paulo G. Coelho
- Department of Biomaterials and Biomimetics; New York University College of Dentistry; New York New York
- Department of Periodontology and Implant Dentistry; New York University College of Dentistry; New York New York
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32
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Moura CCG, Machado JR, Silva MV, Rodrigues DBR, Zanetta-Barbosa D, Jimbo R, Tovar N, Coelho PG. Evaluation of human polymorphonuclear behavior on textured titanium and calcium-phosphate coated surfaces. Biomed Mater 2013; 8:035010. [DOI: 10.1088/1748-6041/8/3/035010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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33
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Moura CG, Souza MA, Kohal RJ, Dechichi P, Zanetta-Barbosa D, Jimbo R, Teixeira CC, Teixeira HS, Tovar N, Coelho PG. Evaluation of osteogenic cell culture and osteogenic/peripheral blood mononuclear human cell co-culture on modified titanium surfaces. Biomed Mater 2013; 8:035002. [DOI: 10.1088/1748-6041/8/3/035002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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34
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Plasma treatment maintains surface energy of the implant surface and enhances osseointegration. Int J Biomater 2013; 2013:354125. [PMID: 23365578 PMCID: PMC3556447 DOI: 10.1155/2013/354125] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Accepted: 11/25/2012] [Indexed: 11/22/2022] Open
Abstract
The surface energy of the implant surface has an impact on osseointegration. In this study, 2 surfaces: nonwashed resorbable blasting media (NWRBM; control) and Ar-based nonthermal plasma 30 days (Plasma 30 days; experimental), were investigated with a focus on the surface energy. The surface energy was characterized by the Owens-Wendt-Rabel-Kaelble method and the chemistry by X-ray photoelectron spectroscopy (XPS). Five adult beagle dogs received 8 implants (n = 2 per surface, per tibia). After 2 weeks, the animals were euthanized, and half of the implants (n = 20) were removal torqued and the other half were histologically processed (n = 20). The bone-to-implant contact (BIC) and bone area fraction occupancy (BAFO) were evaluated on the histologic sections. The XPS analysis showed peaks of C, Ca, O, and P for the control and experimental surfaces. While no significant difference was observed for BIC parameter (P > 0.75), a higher level for torque (P < 0.02) and BAFO parameter (P < 0.01) was observed for the experimental group. The surface elemental chemistry was modified by the plasma and lasted for 30 days after treatment resulting in improved biomechanical fixation and bone formation at 2 weeks compared to the control group.
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35
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Urdaneta RA, Leary J, Panetta KM, Chuang SK. The effect of opposing structures, natural teeth vs. implants on crestal bone levels surrounding single-tooth implants. Clin Oral Implants Res 2012; 25:e179-88. [DOI: 10.1111/clr.12087] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2012] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | - Sung-Kiang Chuang
- Department of Oral and Maxillofacial Surgery; Massachusetts General Hospital and Harvard School of Dental Medicine; Boston MA USA
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36
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Dorozhkin SV. Calcium orthophosphate coatings, films and layers. Prog Biomater 2012; 1:1. [PMID: 29470670 PMCID: PMC5120666 DOI: 10.1186/2194-0517-1-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Accepted: 06/14/2012] [Indexed: 11/16/2022] Open
Abstract
In surgical disciplines, where bones have to be repaired, augmented or improved, bone substitutes are essential. Therefore, an interest has dramatically increased in application of synthetic bone grafts. As various interactions among cells, surrounding tissues and implanted biomaterials always occur at the interfaces, the surface properties of the implants are of the paramount importance in determining both the biological response to implants and the material response to the physiological conditions. Hence, a surface engineering is aimed to modify both the biomaterials, themselves, and biological responses through introducing desirable changes to the surface properties of the implants but still maintaining their bulk mechanical properties. To fulfill these requirements, a special class of artificial bone grafts has been introduced in 1976. It is composed of various mechanically stable (therefore, suitable for load bearing applications) biomaterials and/or bio-devices with calcium orthophosphate coatings, films and layers on their surfaces to both improve interactions with the surrounding tissues and provide an adequate bonding to bones. Many production techniques of calcium orthophosphate coatings, films and layers have been already invented and new promising techniques are continuously investigated. These specialized coatings, films and layers used to improve the surface properties of various types of artificial implants are the topic of this review.
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37
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Baldassarri M, Bonfante E, Suzuki M, Marin C, Granato R, Tovar N, Coelho PG. Mechanical properties of human bone surrounding plateau root form implants retrieved after 0.3-24 years of function. J Biomed Mater Res B Appl Biomater 2012; 100:2015-21. [DOI: 10.1002/jbm.b.32786] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 05/24/2012] [Accepted: 06/15/2012] [Indexed: 11/08/2022]
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38
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Giro G, Tovar N, Witek L, Marin C, Silva NRF, Bonfante EA, Coelho PG. Osseointegration assessment of chairside argon-based nonthermal plasma-treated Ca-P coated dental implants. J Biomed Mater Res A 2012; 101:98-103. [PMID: 22826209 DOI: 10.1002/jbm.a.34304] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2012] [Revised: 03/06/2012] [Accepted: 04/23/2012] [Indexed: 11/11/2022]
Abstract
This study investigated the effect of an Argon-based nonthermal plasma (NTP) surface treatment-operated chairside at atmospheric pressure conditions applied immediately prior to dental implant placement in a canine model. Surfaces investigated comprised: Calcium-Phosphate (CaP) and CaP + NTP (CaP-Plasma). Surface energy was characterized by the Owens-Wendt-Rabel-Kaelble method and chemistry by X-ray photoelectron spectroscopy (XPS). Six adult beagles dogs received 2 plateau-root form implants (n = 1 each surface) in each radii, providing implants that remained 1 and 3 weeks in vivo. Histometric parameters assessed were bone-to-implant contact (BIC) and bone area fraction occupancy (BAFO). Statistical analysis was performed by Kruskall-Wallis (95% level of significance) and Dunn's post-hoc test. The XPS analysis showed peaks of Ca, C, O, and P for the CaP and CaP-Plasma surfaces. Both surfaces presented carbon primarily as hydrocarbon (C-C, C-H) with lower levels of oxidized carbon forms. The CaP surface presented atomic percent values of 38, 42, 11, and 7 for C, O, Ca, and P, respectively, and the CaP-Plasma presented increases in O, Ca, and P atomic percent levels at 53, 12, and 13, respectively, in addition to a decrease in C content at 18 atomic percent. At 1 week no difference was found in histometric parameters between groups. At 3 weeks significantly higher BIC and BAFO were observed for CaP-Plasma treated surfaces. Surface elemental chemistry was modified by the Ar-based NTP. Ar-based NTP improved bone formation around plateau-root form implants at 3 weeks compared with CaP treatment alone.
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Affiliation(s)
- Gabriela Giro
- Department of Oral Diagnosis and Surgery, Araraquara Dental School, UNESP-Universidade Estadual Paulista, Araraquara, SP, Brazil
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39
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Surface Engineering for Bone Implants: A Trend from Passive to Active Surfaces. COATINGS 2012. [DOI: 10.3390/coatings2030095] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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40
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Witek L, Marin C, Granato R, Bonfante EA, Campos F, Bisinotto J, Suzuki M, Coelho PG. Characterization and in vivo evaluation of laser sintered dental endosseous implants in dogs. J Biomed Mater Res B Appl Biomater 2012; 100:1566-73. [PMID: 22692877 DOI: 10.1002/jbm.b.32725] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Revised: 03/25/2012] [Accepted: 03/31/2012] [Indexed: 11/08/2022]
Abstract
Laser metal sintering has shown promising results, but no comparison with other commercially available surface has been performed. This study sought to evaluate the biomechanical and histological early bone response to laser sintered implants relative to alumina-blasted/acid-etched (AB/AE). Surface topography was characterized by scanning electron microscopy and optical interferometry. Surface chemistry was assessed by x-ray photoelectron spectroscopy. Beagle dogs (n = 18) received 4 Ti-6Al-4V implants (one per surface) in each radius, remaining for 1, 3, and 6 weeks (n = 6 dogs per evaluation time) in vivo. Bone-to-implant contact (BIC) and bone area fraction occupancy (BAFO) were evaluated. Biomechanical evaluation comprised torque-to-interface failure. The laser sintered surface presented higher S(a) and S(q) than AB/AE. Chemistry assessment showed the alloy metallic components along with adsorbed carbon species. Significantly higher torque was observed at 1 (p < 0.02) and 6 week (p < 0.02) for the laser sintered, whereas at 3 week no significant differences were observed. Significantly higher BIC and BAFO was observed for the Laser Sintered (p < 0.04, and p < 0.03, respectively) only at 1 week, whereas no significant differences were observed at 3 and 6 weeks. The laser sintered implants presented biocompatible and osseoconductive properties and improved biomechanical response compared with the AB/AE surface only at 1 and 6 weeks in vivo.
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Affiliation(s)
- Lukasz Witek
- Department of Biomaterials and Biomimetics, New York University, New York, New York, USA
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41
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Coelho PG, Giro G, Teixeira HS, Marin C, Witek L, Thompson VP, Tovar N, Silva NRFA. Argon-based atmospheric pressure plasma enhances early bone response to rough titanium surfaces. J Biomed Mater Res A 2012; 100:1901-6. [PMID: 22492543 DOI: 10.1002/jbm.a.34127] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Revised: 01/21/2012] [Accepted: 02/07/2012] [Indexed: 11/08/2022]
Abstract
This study investigated the effect of an Argon-based atmospheric pressure plasma (APP) surface treatment operated chairside at atmospheric pressure conditions applied immediately prior to dental implant placement in a canine model. Surfaces investigated comprised: rough titanium surface (Ti) and rough titanium surface + Argon-based APP (Ti-Plasma). Surface energy was characterized by the Owens-Wendt-Rabel-Kaelble method and chemistry by X-ray photoelectron spectroscopy (XPS). Six adult beagles dogs received two plateau-root form implants (n = 1 each surface) in each radii, providing implants that remained 1 and 3 weeks in vivo. Histometric parameters assessed were bone-to-implant contact (BIC) and bone area fraction occupancy (BAFO). Statistical analysis was performed by Kruskall-Wallis (95% level of significance) and Dunn's post-hoc test. The XPS analysis showed peaks of Ti, C, and O for the Ti and Ti- Plasma surfaces. Both surfaces presented carbon primarily as hydrocarbon (C-C, C-H) with lower levels of oxidized carbon forms. The Ti-Plasma presented large increase in the Ti (+11%) and O (+16%) elements for the Ti- Plasma group along with a decrease of 23% in surface-adsorbed C content. At 1 week no difference was found in histometric parameters between groups. At 3 weeks significantly higher BIC (>300%) and mean BAFO (>30%) were observed for Ti-Plasma treated surfaces. From a morphologic standpoint, improved interaction between connective tissue was observed at 1 week, likely leading to more uniform and higher bone formation at 3 weeks for the Ti-Plasma treated implants was observed.
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Affiliation(s)
- Paulo G Coelho
- Department of Biomaterials and Biomimetics, New York University, New York, New York 10010, USA.
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42
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Teixeira HS, Marin C, Witek L, Freitas A, Silva NRF, Lilin T, Tovar N, Janal MN, Coelho PG. Assessment of a chair-side argon-based non-thermal plasma treatment on the surface characteristics and integration of dental implants with textured surfaces. J Mech Behav Biomed Mater 2012; 9:45-9. [PMID: 22498282 DOI: 10.1016/j.jmbbm.2012.01.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 01/09/2012] [Accepted: 01/14/2012] [Indexed: 11/29/2022]
Abstract
The biomechanical effects of a non-thermal plasma (NTP) treatment, suitable for use in a dental office, on the surface character and integration of a textured dental implant surface in a beagle dog model were evaluated. The experiment compared a control treatment, which presented an alumina-blasted/acid-etched (AB/AE) surface, to two experimental treatments, in which the same AB/AE surface also received NTP treatment for a period of 20 or 60 s per implant quadrant (PLASMA 20' and PLASMA 60' groups, respectively). The surface of each specimen was characterized by electron microscopy and optical interferometry, and surface energy and surface chemistry were determined prior to and after plasma treatment. Two implants of each type were then placed at six bilateral locations in 6 dogs, and allowed to heal for 2 or 4 weeks. Following sacrifice, removal torque was evaluated as a function of animal, implant surface and time in vivo in a mixed model ANOVA. Compared to the CONTROL group, PLASMA 20' and 60' groups presented substantially higher surface energy levels, lower amounts of adsorbed C species and significantly higher torque levels (p=.001). Result indicated that the NTP treatment increased the surface energy and the biomechanical fixation of textured-surface dental implants at early times in vivo.
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Affiliation(s)
- Hellen S Teixeira
- Department of Biomaterials and Biomimetics, New York University, New York, NY 10010, USA.
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43
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Chen J, Yu Q, Zhang G, Yang S, Wu J, Zhang Q. Preparation and biocompatibility of nanohybrid scaffolds by in situ homogeneous formation of nano hydroxyapatite from biopolymer polyelectrolyte complex for bone repair applications. Colloids Surf B Biointerfaces 2012; 93:100-7. [PMID: 22297206 DOI: 10.1016/j.colsurfb.2011.12.022] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 12/11/2011] [Accepted: 12/12/2011] [Indexed: 11/16/2022]
Abstract
The achievement of nano distribution for inorganic reinforced filler is a big challenge to three-dimensional porous composite scaffolds. In this paper, a homogeneous nano hydroxyapatite/polyelectrolyte complex (HAP/PEC) hybrid scaffold was developed and investigated. Based on the enhancing properties of the formation of PEC between chitosan and hyaluronic acid, the introduction of nano HAP via in situ crystallization from the PEC achieved nano distribution in the PEC matrix and supplied nano topographies of extracellular environments for the nanohybrid scaffold. The biocompatibility and bioactivity were evaluated by Human bone mesenchymal stem cells (hBMSCs) proliferation (MTT assay), maturation (alkaline phosphatase (ALP) activity) and histological analysis. The in vitro tests show the scaffold is excellent for cell penetration, growth, and proliferation and it is promising for bone repair application.
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Affiliation(s)
- Jingdi Chen
- Institute of Biomedical and Pharmaceutical Technology, Fuzhou University, Fuzhou, China.
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44
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Valverde GB, Jimbo R, Teixeira HS, Bonfante EA, Janal MN, Coelho PG. Evaluation of surface roughness as a function of multiple blasting processing variables. Clin Oral Implants Res 2011; 24:238-42. [DOI: 10.1111/j.1600-0501.2011.02392.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/20/2011] [Indexed: 11/29/2022]
Affiliation(s)
| | - Ryo Jimbo
- Department of Biomaterials; Sahlgrenska Academy; University of Gothenburg; Gothenburg; Sweden
| | - Hellen S. Teixeira
- Department of Biomaterials and Biomimetics; New York University; New York; NY; USA
| | - Estevam A. Bonfante
- Postgraduate Program in Dentistry; UNIGRANRIO University - School of Health Sciences; Duque de Caxias; RJ; Brazil
| | - Malvin N. Janal
- Department of Epidemiology and Health Promotion; New York University; New York; NY; USA
| | - Paulo G. Coelho
- Department of Biomaterials and Biomimetics; New York University; New York; NY; USA
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45
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Coelho PG, Granato R, Marin C, Teixeira HS, Suzuki M, Valverde GB, Janal MN, Lilin T, Bonfante EA. The effect of different implant macrogeometries and surface treatment in early biomechanical fixation: An experimental study in dogs. J Mech Behav Biomed Mater 2011; 4:1974-81. [DOI: 10.1016/j.jmbbm.2011.06.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Revised: 06/21/2011] [Accepted: 06/25/2011] [Indexed: 10/18/2022]
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46
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The effect of alterations on resorbable blasting media processed implant surfaces on early bone healing: a study in rabbits. IMPLANT DENT 2011; 20:167-77. [PMID: 21448026 DOI: 10.1097/id.0b013e318211fb32] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Etching resorbable blasting media (RM) processed implants is a common engineering procedure, but the interplay between the resulting physicochemical properties and its effects on early bone healing have not been thoroughly addressed. METHODS Screw-root form implant surfaces were treated with 1 of 3 methods: grit (alumina) blasted/acid etching, RM, and RM + acid etching (RMAA). Surface topography (n = 3 each) was characterized by scanning electron microscopy and atomic force microscopy and chemical characterization by x-ray photoelectron spectroscopy analysis. The implants were placed at the distal femur of 16 rabbits, where 3 implants, 1 from each surface, were placed bilaterally remaining 4 and 8 weeks in vivo. After euthanization, one half of the specimens were torqued to interface failure at a rate of ∼0.196 radians/min and the other half were nondecalcified processed for histomorphology and bone-to-implant contact evaluation. RESULTS Physicochemical characterization showed that the grit (alumina) blasted/acid-etched surface was rougher than RM and RMAA. Higher levels of calcium and phosphorous were observed for the RM surface compared with the RMAA surface. No significant differences were observed in torque and bone-to-implant contact between surfaces at 4 or 8 weeks. Histomorphologic evaluation showed woven bone formation around all surfaces at 4 weeks, and its initial replacement by lamellar bone at 8 weeks. CONCLUSIONS Despite differences in texture/chemistry, all implant surfaces were biocompatible and osseoconductive, and led to comparable in vivo bone fixation and measurable histomorphometric parameters.
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Coelho PG, Bonfante EA, Pessoa RS, Marin C, Granato R, Giro G, Witek L, Suzuki M. Characterization of Five Different Implant Surfaces and Their Effect on Osseointegration: A Study in Dogs. J Periodontol 2011; 82:742-50. [DOI: 10.1902/jop.2010.100520] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Effect of drilling technique on the early integration of plateau root form endosteal implants: an experimental study in dogs. J Oral Maxillofac Surg 2011; 69:2158-63. [PMID: 21530048 DOI: 10.1016/j.joms.2011.01.029] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Revised: 11/17/2010] [Accepted: 01/21/2011] [Indexed: 10/18/2022]
Abstract
PURPOSE This study tested the hypothesis that early integration of plateau root form endosseous implants is significantly affected by surgical drilling technique. MATERIALS AND METHODS Sixty-four implants were bilaterally placed in the diaphysial radius of 8 beagles and remained 2 and 4 weeks in vivo. Half the implants had an alumina-blasted/acid-etched surface and the other half a surface coated with calcium phosphate. Half the implants with the 2 surface types were drilled at 50 rpm without saline irrigation and the other half were drilled at 900 rpm under abundant irrigation. After euthanasia, the implants in bone were nondecalcified and referred for histologic analysis. Bone-to-implant contact, bone area fraction occupancy, and the distance from the tip of the plateau to pristine cortical bone were measured. Statistical analyses were performed by analysis of variance at a 95% level of significance considering implant surface, time in vivo, and drilling speed as independent variables and bone-to-implant contact, bone area fraction occupancy, and distance from the tip of the plateau to pristine cortical bone as dependent variables. RESULTS The results showed that both techniques led to implant integration and intimate contact between bone and the 2 implant surfaces. A significant increase in bone-to-implant contact and bone area fraction occupancy was observed as time elapsed at 2 and 4 weeks and for the calcium phosphate-coated implant surface compared with the alumina-blasted/acid-etched surface. CONCLUSIONS Because the surgical drilling technique did not affect the early integration of plateau root form implants, the hypothesis was refuted.
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Marin C, Granato R, Bonfante EA, Suzuki M, Janal MN, Coelho PG. Evaluation of a nanometer roughness scale resorbable media-processed surface: a study in dogs. Clin Oral Implants Res 2011; 23:119-24. [DOI: 10.1111/j.1600-0501.2010.02155.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Coelho PG, Granato R, Marin C, Jimbo R, Lin S, Witek L, Suzuki M, Bonfante EA. Effect of Si addition on Ca- and P-impregnated implant surfaces with nanometer-scale roughness: an experimental study in dogs. Clin Oral Implants Res 2011; 23:373-8. [DOI: 10.1111/j.1600-0501.2010.02150.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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