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Miron RJ, Fujioka-Kobayashi M, Sculean A, Zhang Y. Optimization of platelet-rich fibrin. Periodontol 2000 2024; 94:79-91. [PMID: 37681522 DOI: 10.1111/prd.12521] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 07/25/2023] [Accepted: 08/09/2023] [Indexed: 09/09/2023]
Abstract
The use of platelet-rich fibrin (PRF) has gained tremendous popularity in recent years owing to its ability to speed wound healing postsurgery. However, to date, many clinicians are unaware of methods designed to optimize the technology. This overview article will discuss the advancements and improvements made over the years aimed at maximizing cell and growth factor concentrations. First, a general understanding explaining the differences between RPM and RCF (g-force) is introduced. Then, the low-speed centrifugation concept, fixed angle versus horizontal centrifugation, and methods to maximize platelet concentrations using optimized protocols will be discussed in detail. Thereafter, the importance of chemically modified PRF tubes without the addition of chemical additives, as well as regulation of temperature to induce/delay clotting, will be thoroughly described. This article is a first of its kind summarizing all recent literature on PRF designed to optimize PRF production for clinical treatment.
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Affiliation(s)
- Richard J Miron
- Department of Periodontology, University of Bern, Bern, Switzerland
| | - Masako Fujioka-Kobayashi
- Department of Oral and Maxillofacial Surgery, School of Life Dentistry at Tokyo, The Nippon Dental University, Tokyo, Japan
| | - Anton Sculean
- Department of Periodontology, University of Bern, Bern, Switzerland
| | - Yufeng Zhang
- Department of Oral Implantology, University of Wuhan, Wuhan, China
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2
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de Resende GP, de Menezes EEG, Maniewicz S, Srinivasan M, Leles CR. Prosthodontic outcomes of mandibular overdenture treatment with one or two implants: 4-year results of a randomized clinical trial. Clin Oral Implants Res 2023; 34:233-242. [PMID: 36692124 DOI: 10.1111/clr.14036] [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: 08/01/2022] [Revised: 12/29/2022] [Accepted: 01/12/2023] [Indexed: 01/25/2023]
Abstract
OBJECTIVE To assess the incidence of prosthodontic maintenance events and complications during 4 years of follow-up after mandibular overdenture treatment with one or two implants. METHODS Participants received one or two implants inserted in the midline (1-IOD group) or the lateral incisor-canine area bilaterally (2-IOD group). Implants were loaded with an early loading protocol after 3 weeks. Programmed recall visits were scheduled at the 6-, 12-, 36-, and 48-month follow-ups and nonprogrammed visits in case of prosthodontic complaints. The type of maintenance was registered, and the final treatment outcome was classified as successful, surviving, unknown, dead, repair, or retreatment. RESULTS Forty-seven participants, mean age 65.4 ± 8.6, 74.5% female, were included (1-IOD = 23; 2-IOD = 24) and 44 completed the 4-year follow-up. A total of 159 prosthodontic maintenance events occurred and 89 in unscheduled visits. The most common event was the need for minor modifications of the denture base due to sore spots in the oral mucosa (n = 56 in 31 patients), matrix activation (n = 54 in 34 patients), and overdenture fracture (n = 25 in 18 patients). A "successful" or "surviving" outcome could be attributed to 57.5% of cases, whereas 38.3% needed repair. No significant differences in the incidence of prosthodontic events or treatment outcomes were found between the two groups. CONCLUSIONS Findings show that 1-IODs perform similar to 2-IODs when considering the incidence of fractures and the need for prosthodontic maintenance, including adjustments of the overdenture and the attachment system.
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Affiliation(s)
| | | | - Sabrina Maniewicz
- Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Murali Srinivasan
- Clinic of General, Special Care, and Geriatric Dentistry, Centre of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Cláudio Rodrigues Leles
- Department of Oral Rehabilitation, School of Dentistry, Federal University of Goias, Goiania, Brazil
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3
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Gianfreda F, Antonacci D, Raffone C, Muzzi M, Pistilli V, Bollero P. Microscopic Characterization of Bioactivate Implant Surfaces: Increasing Wettability Using Salts and Dry Technology. MATERIALS 2021; 14:ma14102608. [PMID: 34067747 PMCID: PMC8156028 DOI: 10.3390/ma14102608] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 12/20/2022]
Abstract
The surface topography of dental implants plays an important role in cell-surface interaction promoting cell adhesion, proliferation and differentiation influencing osseointegration. A hydrophilic implant leads to the absorption of water molecules and subsequently promotes the adhesion of cells to the implant binding protein. Dried salts on the implant surfaces allow one to store the implant surfaces in a dry environment while preserving their hydrophilic characteristics. This process has been identified as “dry technology”. The aim of the present study is to describe from a micrometric and nanometric point of view the characteristics of this new bioactivated surface obtained using salts dried on the surface. Topographic analysis, energy-dispersive X-ray spectroscopy, and contact angle characterization were performed on the samples of a sandblasted and dual acid-etched surface (ABT), a nanosurface (Nano) deriving from the former but with the adding of salts air dried and a nanosurface with salts dissolved with distilled water (Nano H2O). The analysis revealed promising results for nanostructured surfaces with increased wettability and a more articulated surface nanotopography than the traditional ABT surface. In conclusion, this study validates a new promising ultra-hydrophilic nano surface obtained by sandblasting, double acid etching and surface salt deposition using dry technology.
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Affiliation(s)
- Francesco Gianfreda
- Department of Industrial Engineering, University of Rome “Tor Vergata”, 00133 Rome, Italy
- Correspondence:
| | | | - Carlo Raffone
- Independent Researcher, 00198 Rome, Italy; (C.R.); (V.P.)
| | - Maurizio Muzzi
- Department of Science, University Roma Tre, Viale G. Marconi, 446, 00146 Rome, Italy;
| | | | - Patrizio Bollero
- Department of System Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy;
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Stavropoulos A, Sandgren R, Bellon B, Sculean A, Pippenger BE. Greater Osseointegration Potential with Nanostructured Surfaces on TiZr: Accelerated vs. Real-Time Ageing. MATERIALS 2021; 14:ma14071678. [PMID: 33805477 PMCID: PMC8036800 DOI: 10.3390/ma14071678] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/16/2021] [Accepted: 03/22/2021] [Indexed: 11/16/2022]
Abstract
Surface chemistry and nanotopography of dental implants can have a substantial impact on osseointegration. The aim of this investigation was to evaluate the effects of surface chemistry and nanotopography on the osseointegration of titanium-zirconium (TiZr; Roxolid®) discs, using a biomechanical pull-out model in rabbits. Two discs each were placed in both the right and left tibiae of 16 rabbits. Five groups of sandblasted acid etched (SLA) discs were tested: (1) hydrophobic without nanostructures (dry/micro) (n = 13); (2) hydrophobic with nanostructures, accelerated aged (dry/nano/AA) (n = 12); (3) hydrophilic without nanostructures (wet/micro) (n = 13); (4) hydrophilic with nanostructures, accelerated aged (wet/nano/AA; SLActive®) (n = 13); (5) hydrophilic with nanostructures, real-time aged (wet/nano/RTA). The animals were sacrificed after four weeks and the biomechanical pull-out force required to remove the discs was evaluated. Adjusted mean pull-out force was greatest for group wet/nano/RTA (64.5 ± 17.7 N) and lowest for group dry/micro (33.8 ± 10.7 N). Multivariate mixed model analysis showed that the pull-out force was significantly greater for all other disc types compared to the dry/micro group. Surface chemistry and topography both had a significant effect on pull-out force (p < 0.0001 for both), but the effect of the interaction between chemistry and topography was not significant (p = 0.1056). The introduction of nanostructures on the TiZr surface significantly increases osseointegration. The introduction of hydrophilicity to the TiZr implant surface significantly increases the capacity for osseointegration, irrespective of the presence or absence of nanotopography.
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Affiliation(s)
- Andreas Stavropoulos
- Division of Regenerative Dental Medicine and Periodontology, University of Geneva, CH-1211 Genève 4, Switzerland
- Department of Periodontology, Faculty of Odontology, Malmö University, SE-205 06 Malmö, Sweden
- Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, AT-1090 Vienna, Austria
- Correspondence: or (A.S.); (B.E.P.)
| | - Rebecca Sandgren
- Department of Biomedicine, Medical Faculty, Lunds University, SE-223 62 Lund, Sweden;
| | - Benjamin Bellon
- Department of Preclinical & Translational Research, Institut Straumann, CH-4002 Basel, Switzerland;
- Department of Periodontology, Faculty of Dentistry, University of Zurich, CH-8032 Zurich, Switzerland
| | - Anton Sculean
- Department of Periodontology, School of Dental Medicine, University of Bern, CH-3210 Bern, Switzerland;
| | - Benjamin E. Pippenger
- Department of Preclinical & Translational Research, Institut Straumann, CH-4002 Basel, Switzerland;
- Department of Periodontology, School of Dental Medicine, University of Bern, CH-3210 Bern, Switzerland;
- Correspondence: or (A.S.); (B.E.P.)
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5
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Pae HC, Kim SK, Park JY, Song YW, Cha JK, Paik JW, Choi SH. Bioactive characteristics of an implant surface coated with a pH buffering agent: an in vitro study. J Periodontal Implant Sci 2019; 49:366-381. [PMID: 31886029 PMCID: PMC6920039 DOI: 10.5051/jpis.2019.49.6.366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/15/2019] [Accepted: 10/11/2019] [Indexed: 11/30/2022] Open
Abstract
Purpose The purpose of this study was to evaluate the effectiveness of conventional sandblasted, large-grit, acid-etched (SLA) surface coated with a pH buffering solution based on surface wettability, blood protein adhesion, osteoblast affinity, and platelet adhesion and activation. Methods Titanium discs and implants with conventional SLA surface (SA), SLA surface in an aqueous calcium chloride solution (CA), and SLA surface with a pH buffering agent (SOI) were prepared. The wetting velocity was measured by the number of threads wetted by blood over an interval of time. Serum albumin adsorption was tested using the bicinchoninic acid assay and by measuring fluorescence intensity. Osteoblast activity assays (osteoblast adhesion, proliferation, differentiation, mineralization, and migration) were also performed, and platelet adhesion and activation assays were conducted. Results In both the wetting velocity test and the serum albumin adsorption assay, the SOI surface displayed a significantly higher wetting velocity than the SA surface (P=0.000 and P=0.000, respectively). In the osteoblast adhesion, proliferation, differentiation, and mineralization tests, the mean values for SOI were all higher than those for SA and CA. On the osteoblast migration, platelet adhesion, and activation tests, SOI also showed significantly higher values than SA (P=0.040, P=0.000, and P=0.000, respectively). Conclusions SOI exhibited higher hydrophilicity and affinity for proteins, cells, and platelets than SA. Within the limits of this study, it may be concluded that coating an implant with a pH buffering agent can induce the attachment of platelets, proteins, and cells to the implant surface. Further studies should be conducted to directly compare SOI with other conventional surfaces with regard to its safety and effectiveness in clinical settings.
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Affiliation(s)
- Hyung-Chul Pae
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Su-Kyoung Kim
- Implant R&D Center, Osstem Implant Co., Ltd., Busan, Korea
| | - Jin-Young Park
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Young Woo Song
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Jae-Kook Cha
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Jeong-Won Paik
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
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6
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Makowiecki A, Hadzik J, Błaszczyszyn A, Gedrange T, Dominiak M. An evaluation of superhydrophilic surfaces of dental implants - a systematic review and meta-analysis. BMC Oral Health 2019; 19:79. [PMID: 31077190 PMCID: PMC6509828 DOI: 10.1186/s12903-019-0767-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 04/15/2019] [Indexed: 01/07/2023] Open
Abstract
Background The characteristics of a dental implant surface have a decisive influence on the process of osseointegration. According to the current state of knowledge, surface modification can not only affect the morphology of cells, and in this way have a positive impact on osseointegration. Methods The objective of this study was to compare survival rates and marginal bone loss as well as assess the degree of stability of Straumann SLAactive® and Thomenn Incell® implants with a superhydrophilic surface. Authors present review of data published between 01.01.2008 and 12.31.2016 that was found in PubMed/MEDLINE internet database, An Internet search of databases produced a total of 1230 studies, 20 publications were finally selected for the present study based on the established selection and exclusion criteria. Results The statistical analysis was performed. A Cumulative Implant Survival Rate (CSR%) was 98.5%, Marginal bone loss (MBL) after 6 months was M = 0.60 mm and 0.6 5 mm after 12 months and secondary stability in a group Thommen implants M = 71.3 ISQ and M = 75.2 ISQ in group of Straumann. Conclusion Despite certain differences in the values of the studied parameters, both of the systems, i.e. Thommen Inicell and Straumann SLActive, demonstrated a high survival rate, a high level of implant stability and low marginal bone loss.
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Affiliation(s)
| | - Jakub Hadzik
- Department of Dental Surgery, Wroclaw Medical University, ul. Krakowska 26, 50-425, Wrocław, Poland. .,Department of Oral Implantology, Wroclaw Medical University Wrocław, ul. Krakowska 26, 50-425, Wrocław, Poland.
| | - Artur Błaszczyszyn
- Department of Dental Surgery, Wroclaw Medical University, ul. Krakowska 26, 50-425, Wrocław, Poland.,Department of Oral Implantology, Wroclaw Medical University Wrocław, ul. Krakowska 26, 50-425, Wrocław, Poland
| | - Tomasz Gedrange
- Department of Dental Surgery, Wroclaw Medical University, ul. Krakowska 26, 50-425, Wrocław, Poland.,Department of Orthodontics, Carl Gustav Carus Campus, Technische Universität Dresden, Germany, Fetscherstr. 74, 01307, Dresden, Germany
| | - Marzena Dominiak
- Department of Dental Surgery, Wroclaw Medical University, ul. Krakowska 26, 50-425, Wrocław, Poland.,Department of Oral Implantology, Wroclaw Medical University Wrocław, ul. Krakowska 26, 50-425, Wrocław, Poland
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7
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Donos N, Horvath A, Calciolari E, Mardas N. Immediate provisionalization of bone level implants with a hydrophilic surface. A five-year follow-up of a randomized controlled clinical trial. Clin Oral Implants Res 2019; 30:139-149. [PMID: 30584682 DOI: 10.1111/clr.13400] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 12/14/2018] [Accepted: 12/16/2018] [Indexed: 01/12/2023]
Abstract
OBJECTIVES To follow-up the radiographic bone level changes and the clinical outcomes of immediately provisionalized and conventionally restored implants with a hydrophilic surface following 5 years of function. MATERIALS AND METHODS This was a 5-year follow-up of a prospective, randomized, single-blind controlled study involving 16 of the 24 originally recruited patients in need of a single-tooth replacement in the esthetic area. Implants were either immediately provisionalized with a non-occluding temporary crown (test group, n = 7), or left without a crown (control group, n = 9). In both groups, the definitive restoration was placed 16 weeks after implant placement. Radiographic and clinical parameters were evaluated at 36, 48, and 60 months post-implant placement, together with implant survival and success rates. The esthetic outcomes were measured with the Papilla Fill Index (PFI) and the Pink Esthetic Score (PES). RESULTS At 60 months, similar peri-implant bone loss was observed in the test (-0.42 mm ±0.17 mm) and in the control (-0.37 mm ±0.35 mm) groups. A tendency for an improved esthetic outcome from implant loading to the subsequent follow-ups was noticed in both groups. Both groups presented with high levels of long-term implant survival and success. CONCLUSIONS This study supports non-functional immediate provisionalization as a viable long-term option for the management of single-tooth implants in the esthetic area. However, the small sample size does not allow statistical inference at 60 months of follow-up and future adequately powered studies are warranted.
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Affiliation(s)
- Nikolaos Donos
- Centre for Oral Immunobiology & Regenerative Medicine, Institute of Dentistry, Bart's & The London School of Medicine & Dentistry, Queen Mary University of London, London, UK.,Centre for Oral Clinical Research, Institute of Dentistry, Bart's & The London School of Medicine & Dentistry, Queen Mary University of London (QMUL), London, UK
| | - Attila Horvath
- Department of Periodontology, Semmelweis University, Budapest, Hungary
| | - Elena Calciolari
- Centre for Oral Immunobiology & Regenerative Medicine, Institute of Dentistry, Bart's & The London School of Medicine & Dentistry, Queen Mary University of London, London, UK.,Centre for Oral Clinical Research, Institute of Dentistry, Bart's & The London School of Medicine & Dentistry, Queen Mary University of London (QMUL), London, UK
| | - Nikos Mardas
- Centre for Oral Immunobiology & Regenerative Medicine, Institute of Dentistry, Bart's & The London School of Medicine & Dentistry, Queen Mary University of London, London, UK.,Centre for Oral Clinical Research, Institute of Dentistry, Bart's & The London School of Medicine & Dentistry, Queen Mary University of London (QMUL), London, UK
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8
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Nogueira TE, Schimmel M, Leles CR. Changes in masticatory performance of edentulous patients treated with single-implant mandibular overdentures and conventional complete dentures. J Oral Rehabil 2018; 46:268-273. [DOI: 10.1111/joor.12744] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 10/26/2018] [Accepted: 10/31/2018] [Indexed: 11/30/2022]
Affiliation(s)
| | - Martin Schimmel
- School of Dental Medicine; University of Bern; Bern Switzerland
| | - Cláudio R. Leles
- School of Dentistry; Federal University of Goias; Goiânia Brazil
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9
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Pinotti FE, de Oliveira GJPL, Aroni MAT, Marcantonio RAC, Marcantonio E. Analysis of osseointegration of implants with hydrophilic surfaces in grafted areas: A Preclinical study. Clin Oral Implants Res 2018; 29:963-972. [DOI: 10.1111/clr.13361] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Revised: 06/07/2018] [Accepted: 06/13/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Felipe E. Pinotti
- School of Dentistry; São Paulo State University (Unesp); Araraquara Brazil
| | | | | | | | - Elcio Marcantonio
- School of Dentistry; São Paulo State University (Unesp); Araraquara Brazil
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10
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Bosshardt DD, Chappuis V, Buser D. Osseointegration of titanium, titanium alloy and zirconia dental implants: current knowledge and open questions. Periodontol 2000 2018; 73:22-40. [PMID: 28000277 DOI: 10.1111/prd.12179] [Citation(s) in RCA: 267] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Bone healing around dental implants follows the pattern and sequence of intramembraneous osteogenesis with formation of woven bone first of all followed later by formation of parallel-fibered and lamellar bone. Bone apposition onto the implant surface starts earlier in trabecular bone than in compact bone. While the first new bone may be found on the implant surface around 1 week after installation, bone remodeling starts at between 6 and 12 weeks and continues throughout life. Bone remodeling also involves the bone-implant interface, thus transiently exposing portions of the implant surface. Surface modifications creating micro-rough implant surfaces accelerate the osseointegration process of titanium implants, as demonstrated in numerous animal experiments. Sandblasting followed by acid-etching may currently be regarded as the gold standard technique to create micro-rough surfaces. Chemical surface modifications, resulting in higher hydrophilicity, further increase the speed of osseointegration of titanium and titanium-zirconium implants in both animals and humans. Surface modifications of zirconia and alumina-toughened zirconia implants also have an influence on the speed of osseointegration, and some implant types reach high bone-to-implant contact values in animals. Although often discussed independently of each other, surface characteristics, such as topography and chemistry, are virtually inseparable. Contemporary, well-documented implant systems with micro-rough implant surfaces, placed by properly trained and experienced clinicians, demonstrate high long-term survival rates. Nevertheless, implant failures do occur. A low percentage of implants are diagnosed with peri-implantitis after 10 years in function. In addition, a low number of implants seem to be lost for primarily reasons other than biofilm-induced infection. Patient factors, such as medications interfering with the immune system and bone cells, may be an element contributing to continuous bone loss and should therefore be monitored and studied in greater detail.
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11
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Offermanns V, Andersen OZ, Sillassen M, Almtoft KP, Andersen IH, Kloss F, Foss M. A comparative in vivo study of strontium-functionalized and SLActive™ implant surfaces in early bone healing. Int J Nanomedicine 2018; 13:2189-2197. [PMID: 29692613 PMCID: PMC5903483 DOI: 10.2147/ijn.s161061] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Purpose Studies have shown that strontium-doped medical applications benefit bone metabolism leading to improved bone healing and osseointegration. Based on this knowledge, the aim of the study was to evaluate the performance of an implant surface, functionalized by a physical vapor deposition (PVD) coating (Ti-Sr-O), designed to yield predictable release of strontium. The Ti-Sr-O functionalized surface is compared to a routinely used, commercially available surface (SLActive™) with respect to bone-to-implant contact (BIC%) and new bone formation (BF%) in two defined regions of interest (ROI-I and ROI-II, respectively). Materials and methods: Ti-Sr-O functionalized, SLActive, and Grade 4 titanium implants were inserted in the femoral condyle of adult male New Zealand White rabbits. The PVD magnetron-sputtered Ti-Sr-O surface coating was characterized using scanning electron microscopy (SEM) for morphology and coating thickness. Strontium release and mechanical stability of the coating, under simulated insertion conditions, were evaluated. Furthermore, histomorphometrical BIC and BF were carried out 2 weeks after insertion. Results Histomorphometry revealed increased bone formation of Ti-Sr-O with significant differences compared to SLActive and Grade 4 titanium in both regions of interest, ROI-I and ROI-II, at 0–250 µm and 250–500 µm distance from the implant surfaces. Analogous results of bone-to-implant contact were observed for the two modified surfaces. Conclusion The results show that a nanopatterned Ti-Sr-O functionalized titanium surface, with sustained release of strontium, increases peri-implant bone volume and could potentially contribute to enhancement of bone anchorage of osseointegrated implants.
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Affiliation(s)
- Vincent Offermanns
- Department of Cranio-Maxillofacial and Oral Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Ole Z Andersen
- Interdisciplinary Nanoscience Center (iNANO), Faculty of Science and Technology, Aarhus University, Aarhus, Denmark
| | - Michael Sillassen
- Interdisciplinary Nanoscience Center (iNANO), Faculty of Science and Technology, Aarhus University, Aarhus, Denmark
| | - Klaus P Almtoft
- Tribology Center, Danish Technological Institute, Aarhus, Denmark
| | - Inge H Andersen
- Tribology Center, Danish Technological Institute, Aarhus, Denmark
| | | | - Morten Foss
- Interdisciplinary Nanoscience Center (iNANO), Faculty of Science and Technology, Aarhus University, Aarhus, Denmark.,Department of Physics and Astronomy, Faculty of Science and Technology, Aarhus University, Aarhus, Denmark
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12
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Mussano F, Genova T, Serra FG, Carossa M, Munaron L, Carossa S. Nano-Pore Size of Alumina Affects Osteoblastic Response. Int J Mol Sci 2018; 19:E528. [PMID: 29425177 PMCID: PMC5855750 DOI: 10.3390/ijms19020528] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 02/04/2018] [Accepted: 02/06/2018] [Indexed: 01/31/2023] Open
Abstract
The rapid development and application of nanotechnology to biological interfaces has impacted the bone implant field, allowing researchers to finely modulate the interface between biomaterials and recipient tissues. In the present study, oxidative anodization was exploited to generate two alumina surfaces with different pore diameters. The former displayed surface pores in the mean range of 16-30 nm, while in the latter pores varied from to 65 to 89 nm. The samples were characterized by Field Emission Scanning Electron Microscopy (FESEM) and Energy Dispersive X-ray spectroscopy (EDX) analysis prior to being tested with pre-osteoblastic MC3T3-E1 cells. In vitro cell response was studied in terms of early cell adhesion, viability, and morphology, including focal adhesion quantification. Both the alumina samples promoted higher cell adhesion and viability than the control condition represented by the standard culture dish plastic. Osteogenic differentiation was assessed through alkaline phosphatase activity and extracellular calcium deposition, and it was found that of the two nano-surfaces, one was more efficient than the other. By comparing for the first time two nano-porous alumina surfaces with different pore diameters, our data supported the role of nano-topography in inducing cell response. Modulating a simple aspect of surface texture may become an attractive route for guiding bone healing and regeneration around implantable metals.
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Affiliation(s)
- Federico Mussano
- CIR Dental School, Department of Surgical Sciences, University of Turin, via Nizza 230, 10126 Turin, Italy.
| | - Tullio Genova
- CIR Dental School, Department of Surgical Sciences, University of Turin, via Nizza 230, 10126 Turin, Italy.
- Department of Life Sciences and Systems Biology, UNITO, via Accademia Albertina 13, 10123 Turin, Italy.
| | - Francesca Giulia Serra
- Department of Mechanical and Aerospatial Engineering (DIMEAS), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy.
| | - Massimo Carossa
- CIR Dental School, Department of Surgical Sciences, University of Turin, via Nizza 230, 10126 Turin, Italy.
| | - Luca Munaron
- Department of Life Sciences and Systems Biology, UNITO, via Accademia Albertina 13, 10123 Turin, Italy.
- Centre for Nanostructured Interfaces and Surfaces (NIS), via Quarello 11/A, 10135 Turin, Italy.
| | - Stefano Carossa
- CIR Dental School, Department of Surgical Sciences, University of Turin, via Nizza 230, 10126 Turin, Italy.
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13
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Calciolari E, Mardas N, Dereka X, Anagnostopoulos AK, Tsangaris GT, Donos N. Protein expression during early stages of bone regeneration under hydrophobic and hydrophilic titanium domes. A pilot study. J Periodontal Res 2017; 53:174-187. [PMID: 29063586 DOI: 10.1111/jre.12498] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/13/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND OBJECTIVES There is significant evidence that, during the early stages of osseointegration, moderately rough hydrophilic (SLActive) surfaces can accelerate osteogenesis and increase bone-to-implant contact in comparison to hydrophobic (SLA) surfaces. However, very little is known regarding the molecular mechanisms behind the influence that surface chemistry modifications to increase hydrophilicity determine on bone healing. The aim of this study was to describe for the first time the proteins and related signalling pathways expressed during early osseous healing stages under SLA and SLActive titanium domes for guided bone regeneration. MATERIAL AND METHODS One SLA and 1 SLActive dome with an internal diameter of 5.0 mm and a height of 3.0 mm were secured to the parietal bones of nine 6-month-old male New Zealand rabbits. Three animals were randomly euthanized at 4, 7 and 14 days and the newly formed tissues retrieved under the domes were analysed with liquid chromatography-mass spectrometry/mass spectrometry. STRING and KEGG databases were applied for Gene Ontology and pathway analyses. RESULTS A different modulation of several pathways was detected between the 2 groups at all healing times. The main differences in the osseous healing response associated to the 2 surfaces were related to pathways involved in regulating the inflammatory response, differentiation of osteoblast precursors and skeletogenesis. At day 7, the highest number of proteins and the highest cellular activity were observed in both groups, although a more complex and articulated proteome in terms of cellular metabolism and signal transduction was observed in SLActive samples. CONCLUSION This is the first study describing the proteome expressed during early healing stages of guided bone regeneration and osseointegration. A combination of enhanced early osteogenic response and reduced inflammatory response were suggested for the hydrophilic group. Future studies are needed to corroborate these findings and explore the molecular effects of different titanium surfaces on the cascade of events taking place during bone formation.
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Affiliation(s)
- E Calciolari
- Centre for Clinical Oral Research, Institute of Dentistry, Queen Mary University of London (QMUL), Barts and The London School of Medicine and Dentistry, London, UK.,Centre for Oral Immunobiology and Regenerative Medicine, Queen Mary University of London (QMUL), Bart's & The London School of Dentistry & Medicine, London, UK
| | - N Mardas
- Centre for Oral Immunobiology and Regenerative Medicine, Queen Mary University of London (QMUL), Bart's & The London School of Dentistry & Medicine, London, UK
| | - X Dereka
- Department of Periodontology, National and Kapodistrian University of Athens, Athens, Greece
| | - A K Anagnostopoulos
- Proteomics Research Unit, Centre of Basic Research II, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - G T Tsangaris
- Proteomics Research Unit, Centre of Basic Research II, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - N Donos
- Centre for Clinical Oral Research, Institute of Dentistry, Queen Mary University of London (QMUL), Barts and The London School of Medicine and Dentistry, London, UK.,Centre for Oral Immunobiology and Regenerative Medicine, Queen Mary University of London (QMUL), Bart's & The London School of Dentistry & Medicine, London, UK
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14
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Morton D, Pollini A. Evolution of loading protocols in implant dentistry for partially dentate arches. Periodontol 2000 2016; 73:152-177. [DOI: 10.1111/prd.12171] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Schimmel M, Müller F, Suter V, Buser D. Implants for elderly patients. Periodontol 2000 2016; 73:228-240. [DOI: 10.1111/prd.12166] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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16
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Todorovic VS, Vasovic M, Beetge MM, van Zyl AW, Kokovic V. Stability Development of Immediately Loaded Hybrid Self-Tapping Implants Inserted in the Posterior Maxilla: 1-Year Results of a Randomized Controlled Trial. J ORAL IMPLANTOL 2016; 43:33-38. [PMID: 27897461 DOI: 10.1563/aaid-joi-d-16-00143] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The objective of the present study was to elucidate stability development of immediately loaded hybrid self-tapping implants inserted in the posterior maxilla. Forty-eight hybrid self-tapping implants with a chemically modified surface (∅4.1; length: 8 mm) were inserted bilaterally in the maxillary first and second premolar and first molar sites of 8 patients. In each patient, both sides of the maxilla were assigned randomly to either immediate (IL) or early (EL) loading group. Implant stability was evaluated by means of resonance frequency analysis immediately after implant placement and after 1, 2, 3, 4, 5, 6, 12, 26, and 52 weeks. High values of primary stability were found in both groups (71.91 ± 6.52 implant stability quotient [ISQ] in IL group; 73.87 ± 6.5 ISQ in EL group), with significant differences between the groups at the different time points. Initial decrease in stability was observed between the first and fifth weeks in the IL group and between the first and third weeks for the EL group. In the IL group 1 implant was removed after 3 weeks due to lack of stability. Early results of this study showed the ability of hybrid self-tapping dental implants with a chemically modified surface to achieve sufficient primary stability and to maintain high values of secondary implant stability in bone type 3 and 4, even when loaded immediately. Minimal alterations in stability were observed for both investigated groups, but the EL group showed faster recovery after an initial drop in stability.
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Affiliation(s)
- Vladimir S Todorovic
- 1 Oral Surgery Department, School of Dental Medicine, University of Belgrade, Serbia.,2 Department of Periodontics and Oral Medicine, School of Dentistry, University of Pretoria, South Africa
| | - Miroslav Vasovic
- 3 Department of Dentistry, Faculty of Medical Sciences, University of Kragujevac, Serbia
| | - Mia-Michaela Beetge
- 2 Department of Periodontics and Oral Medicine, School of Dentistry, University of Pretoria, South Africa
| | - Andre W van Zyl
- 2 Department of Periodontics and Oral Medicine, School of Dentistry, University of Pretoria, South Africa
| | - Vladimir Kokovic
- 4 Advanced Europe Medical Centre, Dental Department, Sharjah, United Arab Emirates
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17
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Alayan J, Vaquette C, Saifzadeh S, Hutmacher D, Ivanovski S. Comparison of early osseointegration of SLA®
and SLActive®
implants in maxillary sinus augmentation: a pilot study. Clin Oral Implants Res 2016; 28:1325-1333. [DOI: 10.1111/clr.12988] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2016] [Indexed: 12/01/2022]
Affiliation(s)
- Jamil Alayan
- School of Dentistry and Oral Health; Centre for Medicine and Oral Health; Menzies Health Institute Queensland; Griffith University; Southport Australia
| | - Cedryck Vaquette
- Institute for Health and Biomedical Innovation; Queensland University of Technology; Kelvin Grove Australia
| | - Siamak Saifzadeh
- Institute for Health and Biomedical Innovation; Queensland University of Technology; Kelvin Grove Australia
| | - Dietmar Hutmacher
- Institute for Health and Biomedical Innovation; Queensland University of Technology; Kelvin Grove Australia
| | - Saso Ivanovski
- School of Dentistry and Oral Health; Centre for Medicine and Oral Health; Menzies Health Institute Queensland; Griffith University; Southport Australia
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18
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Impact of Dental Implant Surface Modifications on Osseointegration. BIOMED RESEARCH INTERNATIONAL 2016; 2016:6285620. [PMID: 27478833 PMCID: PMC4958483 DOI: 10.1155/2016/6285620] [Citation(s) in RCA: 297] [Impact Index Per Article: 37.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 05/22/2016] [Accepted: 06/06/2016] [Indexed: 11/18/2022]
Abstract
Objective. The aim of this paper is to review different surface modifications of dental implants and their effect on osseointegration. Common marketed as well as experimental surface modifications are discussed. Discussion. The major challenge for contemporary dental implantologists is to provide oral rehabilitation to patients with healthy bone conditions asking for rapid loading protocols or to patients with quantitatively or qualitatively compromised bone. These charging conditions require advances in implant surface design. The elucidation of bone healing physiology has driven investigators to engineer implant surfaces that closely mimic natural bone characteristics. This paper provides a comprehensive overview of surface modifications that beneficially alter the topography, hydrophilicity, and outer coating of dental implants in order to enhance osseointegration in healthy as well as in compromised bone. In the first part, this paper discusses dental implants that have been successfully used for a number of years focusing on sandblasting, acid-etching, and hydrophilic surface textures. Hereafter, new techniques like Discrete Crystalline Deposition, laser ablation, and surface coatings with proteins, drugs, or growth factors are presented. Conclusion. Major advancements have been made in developing novel surfaces of dental implants. These innovations set the stage for rehabilitating patients with high success and predictable survival rates even in challenging conditions.
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19
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Dard M, Shiota M, Sanda M, Yajima Y, Sekine H, Kasugai S. A randomized, 12-month controlled trial to evaluate non-inferiority of early compared to conventional loading of modSLA implants in single tooth gaps. Int J Implant Dent 2016; 2:10. [PMID: 27747702 PMCID: PMC5005762 DOI: 10.1186/s40729-016-0040-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 03/23/2016] [Indexed: 02/05/2023] Open
Abstract
Background The aim of the study was to evaluate whether early loading of implants with a chemically modified sandblasted, large-grit, acid-etched (SLA) (SLActive®) surface was non-inferior to conventional loading in terms of change in crestal bone level. Methods This was a randomized, controlled, multicenter study. Patients requiring single-tooth rehabilitation in the posterior maxilla or mandible received implants and were randomized to receive a provisional restoration in occlusal load after 25 ± 3 days (early loading) or after 13 ± 1 weeks (conventional loading). The primary endpoint was change in crestal bone level between implant placement (baseline) and 6 months. Secondary endpoints included change in crestal bone level between baseline and 12 months, implant survival and success rates, and patient satisfaction. Results Of the 84 patients enrolled, 78 received implants and were randomized onto the early loading (41 patients) and conventional loading (37 patients) groups. The mean change in crestal bone level between baseline and 6 months was 0.56 ± 0.58 and 0.51 ± 0.62 mm for early and conventional loading, respectively; at 12 months, the mean change was 0.76 ± 0.60 and 0.73 ± 0.77 mm, respectively. Implant survival and success at 12 months were 100 % for both groups. Patient satisfaction was similar between the groups, except that more patients in the early loading group were satisfied or highly satisfied with the time taken for fitting. Conclusion The study demonstrated that early implant loading was non-inferior to conventional implant loading in terms of crestal bone level change in a Japanese patient population in short follow-up period and single tooth gaps in molar regions.
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Affiliation(s)
- Michel Dard
- College of Dentistry, New York University, New York, NY, USA
| | - Makoto Shiota
- Tokyo Medical and Dental University, Tokyo, Japan. .,Department of Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan.
| | - Minoru Sanda
- Tokyo Medical and Dental University, Tokyo, Japan
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20
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Influence of preservation of the alveolar ridge on delayed implants after extraction of teeth with different defects in the buccal bone. Br J Oral Maxillofac Surg 2016; 54:176-80. [DOI: 10.1016/j.bjoms.2015.11.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 11/22/2015] [Indexed: 11/23/2022]
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21
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Kuchler U, Chappuis V, Bornstein MM, Siewczyk M, Gruber R, Maestre L, Buser D. Development of Implant Stability Quotient values of implants placed with simultaneous sinus floor elevation - results of a prospective study with 109 implants. Clin Oral Implants Res 2016; 28:109-115. [DOI: 10.1111/clr.12768] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/14/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Ulrike Kuchler
- Department of Oral Surgery and Stomatology; University of Bern; Bern Switzerland
- Department of Oral Surgery; Medical University of Vienna; Vienna Austria
| | - Vivianne Chappuis
- Department of Oral Surgery and Stomatology; University of Bern; Bern Switzerland
| | - Michael M. Bornstein
- Department of Oral Surgery and Stomatology; University of Bern; Bern Switzerland
| | - Marta Siewczyk
- Department of Oral Surgery and Stomatology; University of Bern; Bern Switzerland
- Department of Reconstructive Dental Medicine and Gerodontology; School of Dental Medicine; University of Bern; Bern Switzerland
| | - Reinhard Gruber
- Laboratory of Oral Cell Biology; School of Dental Medicine; University of Bern; Bern Switzerland
- Department of Oral Biology; Medical University of Vienna; Vienna Austria
| | - Laura Maestre
- Department of Oral Surgery and Stomatology; University of Bern; Bern Switzerland
| | - Daniel Buser
- Department of Oral Surgery and Stomatology; University of Bern; Bern Switzerland
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22
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Hicklin SP, Schneebeli E, Chappuis V, Janner SFM, Buser D, Brägger U. Early loading of titanium dental implants with an intra-operatively conditioned hydrophilic implant surface after 21 days of healing. Clin Oral Implants Res 2015; 27:875-83. [DOI: 10.1111/clr.12706] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Stefan Paul Hicklin
- Department of Reconstructive Dentistry and Gerodontology; School of Dental Medicine; University of Bern; Bern Switzerland
- Division of Fixed Prosthodontics and Biomaterials; School of Dental Medicine; University of Geneva; Geneva Switzerland
| | - Esther Schneebeli
- Department of Reconstructive Dentistry and Gerodontology; School of Dental Medicine; University of Bern; Bern Switzerland
| | - Vivianne Chappuis
- Department of Oral Surgery and Stomatology; School of Dental Medicine; University of Bern; Bern Switzerland
| | | | - Daniel Buser
- Department of Oral Surgery and Stomatology; School of Dental Medicine; University of Bern; Bern Switzerland
| | - Urs Brägger
- Department of Reconstructive Dentistry and Gerodontology; School of Dental Medicine; University of Bern; Bern Switzerland
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23
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Mordenfeld A, Lindgren C, Hallman M. Sinus Floor Augmentation Using Straumann® BoneCeramic™ and Bio-Oss® in a Split Mouth Design and Later Placement of Implants: A 5-Year Report from a Longitudinal Study. Clin Implant Dent Relat Res 2015; 18:926-936. [PMID: 26358740 DOI: 10.1111/cid.12374] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Straumann® BoneCeramic™ is a synthetic biphasic calcium phosphate (BCP) aimed for sinus floor augmentation. Long-term follow-up of implants placed in BCP after sinus augmentation is still missing. PURPOSE The primary aim of the study was to compare survival rates and marginal bone loss of Straumann SLActive implants placed in either BCP (test) or Bio-Oss® (DBB) (control) after sinus floor augmentation. The secondary aim was to calculate graft sinus height at different time points. MATERIALS AND METHODS Bilateral sinus floor augmentation was performed in a split mouth model. Eleven patients (mean age 67 years) received 100% BCP on one side and 100% DBB on the contralateral side. After 8 months of graft healing, 62 Straumann SLActive implants were placed. After 5 years of functional loading (6 years after augmentation) of implants, marginal bone levels and grafted sinus height were measured, and implant survival and success rates were calculated. RESULTS After 5 years of loading, all prosthetic constructions were in function although two implants were lost in each grafting material. The overall implant survival rate was 93.5% (91.7% for BCP, 91.3% for DBB, and 100% for residual bone). The success rates were 83.3% and 91.3% for BCP and DBB, respectively. There was no statistically significant difference in mean marginal bone level after 5 years between BCP (1.4 ± 1.2 mm) and DBB (1.0 ± 0.7 mm). Graft height reduction (GHR) after 6 years was limited to 6.6% for BCP and 5.8% for DBB. CONCLUSION In this limited RCT study, the choice of biomaterial used for sinus floor augmentation did not seem to have any impact on survival rates and marginal bone level of the placed implants after 5 years of functional loading and GHR was minimal.
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Affiliation(s)
- Arne Mordenfeld
- Department of Oral & Maxillofacial Surgery, Gävle County Hospital, Gävle, Sweden. .,Centre for Research and Development, Uppsala University/Gävleborg County Council, Uppsala, Sweden.
| | - Christer Lindgren
- Department of Oral & Maxillofacial Surgery, Gävle County Hospital, Gävle, Sweden.,Centre for Research and Development, Uppsala University/Gävleborg County Council, Uppsala, Sweden
| | - Mats Hallman
- Department of Oral & Maxillofacial Surgery, Gävle County Hospital, Gävle, Sweden.,Centre for Research and Development, Uppsala University/Gävleborg County Council, Uppsala, Sweden.,Department of Oral & Maxillofacial Surgery, Umeå University, Umeå, Sweden
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24
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Ryu HS, Namgung C, Heo YK, Lee JH, Lim YJ. Early loading of splinted implants supporting a two-unit fixed partial denture in the posterior maxilla: 13-month results from a randomized controlled clinical trial of two different implant systems. Clin Oral Implants Res 2015. [DOI: 10.1111/clr.12667] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hyo-Sook Ryu
- Department of Prosthodontics and Dental Research Institute; School of Dentistry; Seoul National University; Seoul Korea
| | - Cheol Namgung
- Department of Prosthodontics and Dental Research Institute; School of Dentistry; Seoul National University; Seoul Korea
| | - Young-Ku Heo
- Director; Global Academy of Osseointegration; Seoul Korea
| | - Jong-Ho Lee
- Department of Oral Maxillofacial Surgery and Dental Research Institute; School of Dentistry; Seoul National University; Seoul Korea
| | - Young-Jun Lim
- Department of Prosthodontics and Dental Research Institute; School of Dentistry; Seoul National University; Seoul Korea
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25
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Chambrone L, Shibli JA, Mercúrio CE, Cardoso B, Preshaw PM. Efficacy of standard (SLA) and modified sandblasted and acid-etched (SLActive) dental implants in promoting immediate and/or early occlusal loading protocols: a systematic review of prospective studies. Clin Oral Implants Res 2015; 26:359-370. [PMID: 24814519 DOI: 10.1111/clr.12347] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/20/2013] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To assess the survival percentage, clinical and radiographic outcomes of sandblasted and acid-etched (SLA) dental implants and its modified surface (SLActive) in protocols involving immediate and early occlusal loading. METHODS MEDLINE, EMBASE and the Cochrane Oral Health Group's Trials Register CENTRAL were searched in duplicate up to, and including, June 2013 to include randomised controlled trials (RCTs) and prospective observational studies of at least 6-month duration published in all languages. Studies limited to patients treated with SLA and/or SLActive implants involving a treatment protocol describing immediate and early loading of these implants were eligible for inclusion. Data on clinical and/or radiographic outcomes following implant placement were considered for inclusion. RESULTS Of the 447 potentially eligible publications identified by the search strategy, seven RCTs comprising a total of 853 implants (8% titanium plasma-sprayed, 41.5% SLA and 50.5% SLActive) and 12 prospective observational studies including 1394 SLA and 145 SLActive implants were included in this review. According to the Cochrane Collaboration's tool for assessing risk of bias, one of the studies was considered to be at a low risk of bias, whereas the remaining studies were considered to be at an unclear risk. Regarding the observational studies, all of them presented a medium methodological quality based on the Modified Newcastle-Ottawa scale. There were no significant differences reported in the studies in relation to implant loss or clinical parameters between the immediate/early loading and delayed loading protocols. Overall, 95% of SLA and 97% of SLActive implants still survive at the end of follow-up. CONCLUSIONS Despite of the positive findings achieved by the included studies, few RCTs were available for analysis for SLActive implants. Study heterogeneity, scarcity of data and the lack of pooled estimates represent a limitation between studies' comparisons and should be considered when interpreting the present findings.
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Affiliation(s)
- Leandro Chambrone
- UIBO (Unit of Basic Oral Investigation), Faculty of Dentistry, El Bosque University, Bogota, Colombia
| | - Jamil Awad Shibli
- Dental Research Division, Department of Periodontology and Implantology, Guarulhos University, Guarulhos, SP, Brazil
| | - Carlos Eduardo Mercúrio
- Dental Research Division, Department of Periodontology and Implantology, Guarulhos University, Guarulhos, SP, Brazil
| | - Bruna Cardoso
- Dental Research Division, Department of Periodontology and Implantology, Guarulhos University, Guarulhos, SP, Brazil
| | - Philip M Preshaw
- School of Dental Sciences and Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
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26
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Hinkle RM, Rimer SR, Morgan MH, Zeman P. Loading of Titanium Implants With Hydrophilic Endosteal Surface 3 Weeks After Insertion: Clinical and Radiological Outcome of a 12-Month Prospective Clinical Trial. J Oral Maxillofac Surg 2014; 72:1495-502. [DOI: 10.1016/j.joms.2014.04.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Revised: 04/10/2014] [Accepted: 04/14/2014] [Indexed: 11/29/2022]
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27
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Stübinger S, Waser J, Hefti T, Drechsler A, Sidler M, Klein K, von Rechenberg B, Schlottig F. Evaluation of local cancellous bone amelioration by poly-L-DL-lactide copolymers to improve primary stability of dental implants: a biomechanical study in sheep. Clin Oral Implants Res 2014; 26:572-80. [PMID: 24989873 DOI: 10.1111/clr.12445] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate the clinical performance of local cancellous bone amelioration by a 70:30 poly-(L-lactide-co-D,L-Lacide) copolymer with two different implant designs on primary stability and after 4 and 12 weeks of healing time. MATERIAL AND METHODS In six sheep, n = 36 implants (TH) with a conditioned, sandblasted, thermal acid-etched micro-rough surface and n = 36 implants (NB) with a highly crystalline and phosphate-enriched anodized titanium oxide surface were placed in the pelvic bone. Using an ultrasound-based process named Constant Amelioration Process (CAP), half of peri-implant trabecular bone structures were locally tested with 70:30 poly-(L-lactide-co-D,L-Lacide) copolymer in both implant groups, TH and NB. The CAP technology employs ultrasonic energy to liquefy 70:30 poly-(L-lactide-co-D,L-Lacide) which enters the inter-trabecular space, leading to local reinforcement of the cancellous bone structure after solidification of the copolymer. The CAP test group was compared with reference implants placed with the conventional site preparation according to the manufacturers' description. Primary stability was assessed by the measurement of torque-in values and implant stability quotient (ISQ; n = 18 per group). Secondary stability was analyzed by biomechanical removal torque testing after 4 and 12 weeks (n = 9 per group). RESULTS Insertion torque value (23.3 N cm ± 13.6) of reference TH implants demonstrated a statistically significant (P = 0.00) difference in comparison with test TH implants (41.9 N cm ± 19.5). Reference NB implants revealed a statistically significant (P = 0.03) lower insertion torque value (23.7 N cm ± 13.5) than test NB implants (39.7 N cm ± 18.6). ISQ values increased for all implants from initial implant placement until sacrifice at 12 weeks. Reference TH implants tended to result in an increase in torque values from 4 weeks (181.9 N cm ± 22.8) to 12 weeks (225.7 N cm ± 47.4). This trend could be also proven for implants of test sites (4 week: 176.8 N cm ± 24.1; 12 week: 201.5 N cm ± 53.4). For reference, NB implants a non-significant increase in removal torque values from 4 weeks (146. 7 N cm ± 18.0) to 12 weeks (170.2 N cm ± 40.4) was observed. Removal torque values of test NB implants did not increase from 4 weeks (153.3 N cm ± 21.5) to 12 weeks (146.1 N cm ± 37.5). CONCLUSION Biomechanical data proved significantly enhanced primary stability of dental implants after local amelioration without long-term sequelae and irrespective of implant design. After 4- and 12-week healing time, removal torque of locally test implants was as high as for control implants, and osseointegration was therefore not influenced by the CAP process. No correlation between ISQ values and torque values was found.
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Affiliation(s)
- Stefan Stübinger
- Musculoskeletal Research Unit, Equine Hospital, Vetsuisse Faculty ZH, University of Zurich, Zurich, Switzerland; Center of Applied Biotechnology and Molecular Medicine (CABMM), Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
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28
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Gittens RA, Scheideler L, Rupp F, Hyzy SL, Geis-Gerstorfer J, Schwartz Z, Boyan BD. A review on the wettability of dental implant surfaces II: Biological and clinical aspects. Acta Biomater 2014; 10:2907-18. [PMID: 24709541 DOI: 10.1016/j.actbio.2014.03.032] [Citation(s) in RCA: 398] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 03/26/2014] [Accepted: 03/30/2014] [Indexed: 01/10/2023]
Abstract
Dental and orthopedic implants have been under continuous advancement to improve their interactions with bone and ensure a successful outcome for patients. Surface characteristics such as surface topography and surface chemistry can serve as design tools to enhance the biological response around the implant, with in vitro, in vivo and clinical studies confirming their effects. However, the comprehensive design of implants to promote early and long-term osseointegration requires a better understanding of the role of surface wettability and the mechanisms by which it affects the surrounding biological environment. This review provides a general overview of the available information about the contact angle values of experimental and of marketed implant surfaces, some of the techniques used to modify surface wettability of implants, and results from in vitro and clinical studies. We aim to expand the current understanding on the role of wettability of metallic implants at their interface with blood and the biological milieu, as well as with bacteria, and hard and soft tissues.
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29
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Marković A, Čolić S, Šćepanović M, Mišić T, Ðinić A, Bhusal DS. A 1-Year Prospective Clinical and Radiographic Study of Early-Loaded Bone Level Implants in the Posterior Maxilla. Clin Implant Dent Relat Res 2014; 17:1004-13. [DOI: 10.1111/cid.12201] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aleksa Marković
- Department of Oral Surgery; School of Dentistry; University of Belgrade; Belgrade Serbia
| | - Snježana Čolić
- Department of Oral Surgery; School of Dentistry; University of Belgrade; Belgrade Serbia
| | - Miodrag Šćepanović
- Department of Prosthodontics; School of Dentistry; University of Belgrade; Belgrade Serbia
| | - Tijana Mišić
- Department of Oral Surgery; School of Dentistry; University of Belgrade; Belgrade Serbia
| | - Ana Ðinić
- Department of Oral Surgery; School of Dentistry; University of Belgrade; Belgrade Serbia
| | - Dinesh Sharma Bhusal
- Department of Oral Surgery; School of Dentistry; University of Belgrade; Belgrade Serbia
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Kim YK, Kim BS, Yun PY, Yi YJ. An analysis of failure of 5-year loaded tapered implants with SLA surface. JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY MEDICINE AND PATHOLOGY 2014. [DOI: 10.1016/j.ajoms.2012.08.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Capelli M, Testori T, Galli F, Zuffetti F, Motroni A, Weinstein R, Del Fabbro M. Implant–Buccal Plate Distance as Diagnostic Parameter: A Prospective Cohort Study on Implant Placement in Fresh Extraction Sockets. J Periodontol 2013; 84:1768-74. [DOI: 10.1902/jop.2013.120474] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Micro-architecture and mineralization of the human alveolar bone obtained with microCT. Arch Oral Biol 2012; 58:621-7. [PMID: 23123067 DOI: 10.1016/j.archoralbio.2012.10.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Revised: 07/04/2012] [Accepted: 10/01/2012] [Indexed: 11/23/2022]
Abstract
OBJECTIVES The primary dental implant stability depends on the location of the implant in the jaw. This study analysed the architecture and mineralization of the trabecular bone at different jaw locations and thereby identified potential prognostic factors for implant failure. It has checked the hypotheses: (1) the mandible contains more compact and less mineralized trabecular bone than the maxilla and (2) within the mandible the trabecular bone is more compact and less mineralized in the anterior region. METHODS Alveolar bone specimens were produced from the cadavers of ten humans (7 males and 3 females; mean age: 73.7±12.5 years) and scanned with a high-resolution microCT system. Volumes of interest were chosen next to the roots of molars and incisors in both the maxilla and mandible. Several morphological parameters as well as the tissue mineral density were determined. RESULTS The alveolar bone specimens had a very high bone volume fraction (mean=0.31) with large differences (SD=0.17) between and within subjects. Yet several significant differences were found between the maxilla and the mandible. The bone volume fraction and trabecular thickness were significantly higher in the mandible than in the maxilla (p<0.01). But the tissue mineral density was not significantly different. CONCLUSIONS A higher primary implant stability coincides with a higher bone volume fraction and degree of anisotropy Although local differences remain more important for implantology, the results suggest that the micro-structure also affects the implant stability. The tissue mineral density seems to have no predictive value.
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Clinical and radiographic outcome of dental implants supporting fixed prostheses: the relevance of cortical bone formation. IMPLANT DENT 2012; 21:323-9. [PMID: 22814558 DOI: 10.1097/id.0b013e31825cd4ae] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE To evaluate the hard and the soft tissue parameters around implants supporting fixed prostheses over a period of 5 years and the possible association to the increase in periimplant bone density (IPBD). MATERIAL AND METHODS A total of 39 dental implants placed in 29 patients were included in the study. Periimplant clinical (gingival index, probing depth, keratinized mucosa, sulcus fluid flow rate) and radiographic variables (bone loss, bone density) were collected, and the data analysis performed. RESULTS Periimplant hard and soft tissue parameters remained stable throughout the follow-up period. Of the 39 implants, 20 demonstrated IPBD. The mean distance between first bone-to-implant contact and the microgap for implants with and without IPBD was significantly different at 1-year, 2-year, and 5-year follow-up. The evidence of IPBD demonstrated no influence on the periimplant soft tissue parameters. All mean values of bone density for implants with IPBD were higher than those for implants without IPBD throughout the whole observation period. CONCLUSION All implants were clinically successful over the period of follow-up. IPBD might be more indicative of a stable periimplant bone level.
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Broggini N, Tosatti S, Ferguson SJ, Schuler M, Textor M, Bornstein MM, Bosshardt DD, Buser D. Evaluation of chemically modified SLA implants (modSLA) biofunctionalized with integrin (RGD)- and heparin (KRSR)-binding peptides. J Biomed Mater Res A 2011; 100:703-11. [DOI: 10.1002/jbm.a.34004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Revised: 08/25/2011] [Accepted: 08/31/2011] [Indexed: 01/31/2023]
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Kim S, Myung WC, Lee JS, Cha JK, Jung UW, Yang HC, Lee IS, Choi SH. The effect of fibronectin-coated implant on canine osseointegration. J Periodontal Implant Sci 2011; 41:242-7. [PMID: 22087415 PMCID: PMC3213235 DOI: 10.5051/jpis.2011.41.5.242] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2011] [Accepted: 09/20/2011] [Indexed: 11/25/2022] Open
Abstract
Purpose The purpose of this study was to characterize the osseointegration of the fibronectin-coated implant surface. Methods Sand-blasted, large-grit, acid-etched (SLA) surface implants, with or without a thin calcium phosphate and fibronectin coating, were placed in edentulous mandibles of dogs 8 weeks after extraction. All dogs were sacrificed forhistological and histomorphometric evaluation after 4- and 8-week healing periods. Results All types of implants were clinically stable without any mobility. Although the bone-to-implant contact and bone density of the SLA implants coated with calcium phosphate (CaP)/fibronectin were lower than the uncoated SLA implants, there were no significant differences between the uncoated SLA surface group and the SLA surface coated with CaP/fibronectin group. Conclusions Within the limits of this study, SLA surfaces coated with CaP/fibronectin were shown to have comparable bone-to-implant contact and bone density to uncoated SLA surfaces.
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Affiliation(s)
- Sungtae Kim
- Department of Prosthodontics, Yonsei University College of Dentistry, Seoul, Korea
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Thoma DS, Jones AA, Dard M, Grize L, Obrecht M, Cochran DL. Tissue Integration of a New Titanium–Zirconium Dental Implant: A Comparative Histologic and Radiographic Study in the Canine. J Periodontol 2011; 82:1453-61. [DOI: 10.1902/jop.2010.100737] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Wennerberg A, Galli S, Albrektsson T. Current knowledge about the hydrophilic and nanostructured SLActive surface. Clin Cosmet Investig Dent 2011; 3:59-67. [PMID: 23674916 PMCID: PMC3652359 DOI: 10.2147/cciden.s15949] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
This review summarizes the present documentation for the SLActive surface, a hydrophilic and nanostructured surface produced by Straumann Company in Switzerland, and covers the results from 15 in vitro, 17 in vivo, and 16 clinical studies. The SLActive surface is a development of the large grit-blasted and acid-etched SLA surface, and is further processed to a high degree of hydrophilicity. In general, the in vitro and in vivo studies of the SLActive surface demonstrate a stronger cell and bone tissue response than for the predecessor, the SLA surface, produced by the same company. However, in most studies, this difference disappears after 6-8 weeks. In the clinical studies, a stronger bone response was reported for the SLActive surface during the early healing phase when compared with the SLA surface. However, the later biological response was quite similar for the two surfaces and both demonstrated very good clinical results.
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Affiliation(s)
- Ann Wennerberg
- Department of Prosthodontics, Malmö University, Malmö, Sweden ; Department of Biomaterials, Gothenburg University, Gothenburg, Sweden
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Hong J, Kurt S, Thor A. A Hydrophilic Dental Implant Surface Exhibit Thrombogenic Properties In Vitro. Clin Implant Dent Relat Res 2011; 15:105-112. [DOI: 10.1111/j.1708-8208.2011.00362.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jaan Hong
- Researcher, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory C5, Uppsala University, Uppsala, Sweden
| | - Seta Kurt
- research engineer, Department of Oncology, Radiology and Clinical Immunology, Division of Clinical Immunology, Rudbeck Laboratory C5, Uppsala University, Uppsala, Sweden,
| | - Andreas Thor
- consultant and researcher, Institute of Surgical Sciences, Department of Oral & Maxillofacial Surgery, Uppsala University, Uppsala, Sweden
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Van Assche N, Michels S, Quirynen M, Naert I. Extra short dental implants supporting an overdenture in the edentulous maxilla: a proof of concept. Clin Oral Implants Res 2011; 23:567-76. [DOI: 10.1111/j.1600-0501.2011.02235.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Valderrama P, Bornstein MM, Jones AA, Wilson TG, Higginbottom FL, Cochran DL. Effects of Implant Design on Marginal Bone Changes Around Early Loaded, Chemically Modified, Sandblasted Acid-Etched–Surfaced Implants: A Histologic Analysis in Dogs. J Periodontol 2011; 82:1025-34. [DOI: 10.1902/jop.2010.100491] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Karabuda ZC, Abdel-Haq J, Arιsan V. Stability, marginal bone loss and survival of standard and modified sand-blasted, acid-etched implants in bilateral edentulous spaces: a prospective 15-month evaluation. Clin Oral Implants Res 2010; 22:840-9. [DOI: 10.1111/j.1600-0501.2010.02065.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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