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Knabe C, Adel-Khattab D, Rezk M, Cheng J, Berger G, Gildenhaar R, Wilbig J, Günster J, Rack A, Heiland M, Knauf T, Stiller M. Osteogenic Effect of a Bioactive Calcium Alkali Phosphate Bone Substitute in Humans. Bioengineering (Basel) 2023; 10:1408. [PMID: 38135999 PMCID: PMC10741049 DOI: 10.3390/bioengineering10121408] [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: 11/04/2023] [Revised: 11/29/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
(1) Background: The desire to avoid autograft harvesting in implant dentistry has prompted an ever-increasing quest for bioceramic bone substitutes, which stimulate osteogenesis while resorbing in a timely fashion. Consequently, a highly bioactive silicon containing calcium alkali orthophosphate (Si-CAP) material was created, which previously was shown to induce greater bone cell maturation and bone neo-formation than β-tricalcium phosphate (β-TCP) in vivo as well as in vitro. Our study tested the hypothesis that the enhanced effect on bone cell function in vitro and in sheep in vivo would lead to more copious bone neoformation in patients following sinus floor augmentation (SFA) employing Si-CAP when compared to β-TCP. (2) Methods: The effects of Si-CAP on osteogenesis and Si-CAP resorbability were evaluated in biopsies harvested from 38 patients six months after SFA in comparison to β-TCP employing undecalcified histology, histomorphometry, and immunohistochemical analysis of osteogenic marker expression. (3) Results: Si-CAP as well as β-TCP supported matrix mineralization and bone formation. Apically furthest away from the original bone tissue, Si-CAP induced significantly higher bone formation, bone-bonding (bone-bioceramic contact), and granule resorption than β-TCP. This was in conjunction with a higher expression of osteogenic markers. (4) Conclusions: Si-CAP induced higher and more advanced bone formation and resorbability than β-TCP, while β-TCP's remarkable osteoconductivity has been widely demonstrated. Hence, Si-CAP constitutes a well-suited bioactive graft choice for SFA in the clinical arena.
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Affiliation(s)
- Christine Knabe
- Department of Experimental Orofacial Medicine, Philipps-University Marburg, 35039 Marburg, Germany (M.R.); (J.C.); (T.K.); (M.S.)
- Department of Oral and Maxillofacial Surgery, Charité University Medical Center Berlin (Charité-Universitätsmedizin Berlin), Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 13353 Berlin, Germany;
| | - Doaa Adel-Khattab
- Department of Experimental Orofacial Medicine, Philipps-University Marburg, 35039 Marburg, Germany (M.R.); (J.C.); (T.K.); (M.S.)
- Department of Oral Medicine, Periodontology and Diagnosis, Faculty of Dentistry Ain Shams University, Cairo 11566, Egypt
| | - Mohamed Rezk
- Department of Experimental Orofacial Medicine, Philipps-University Marburg, 35039 Marburg, Germany (M.R.); (J.C.); (T.K.); (M.S.)
- Department of Oral Medicine, Periodontology and Diagnosis, Faculty of Dentistry Ain Shams University, Cairo 11566, Egypt
| | - Jia Cheng
- Department of Experimental Orofacial Medicine, Philipps-University Marburg, 35039 Marburg, Germany (M.R.); (J.C.); (T.K.); (M.S.)
| | - Georg Berger
- Division “Advanced Multi-Materials Processing”, Federal Institute for Materials Research and Testing, 12203 Berlin, Germany (R.G.); (J.W.); (J.G.)
| | - Renate Gildenhaar
- Division “Advanced Multi-Materials Processing”, Federal Institute for Materials Research and Testing, 12203 Berlin, Germany (R.G.); (J.W.); (J.G.)
| | - Janka Wilbig
- Division “Advanced Multi-Materials Processing”, Federal Institute for Materials Research and Testing, 12203 Berlin, Germany (R.G.); (J.W.); (J.G.)
| | - Jens Günster
- Division “Advanced Multi-Materials Processing”, Federal Institute for Materials Research and Testing, 12203 Berlin, Germany (R.G.); (J.W.); (J.G.)
| | - Alexander Rack
- Structure of Materials Group, European Synchrotron Radiation Facility, 38043 Grenoble, France
| | - Max Heiland
- Department of Oral and Maxillofacial Surgery, Charité University Medical Center Berlin (Charité-Universitätsmedizin Berlin), Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 13353 Berlin, Germany;
| | - Tom Knauf
- Department of Experimental Orofacial Medicine, Philipps-University Marburg, 35039 Marburg, Germany (M.R.); (J.C.); (T.K.); (M.S.)
- Department of Traumatology, Philipps-University Marburg, 35043 Marburg, Germany
| | - Michael Stiller
- Department of Experimental Orofacial Medicine, Philipps-University Marburg, 35039 Marburg, Germany (M.R.); (J.C.); (T.K.); (M.S.)
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Menezes JD, Pereira RDS, Santos AMDS, de Siqueira NB, Boos-Lima FBDJ, Hochuli-Vieira E. Three-dimensional volumetric changes of 5 different bone grafts in human maxillary sinuses reconstruction: a randomized clinical study. Oral Maxillofac Surg 2021; 25:541-547. [PMID: 33715054 DOI: 10.1007/s10006-021-00940-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 01/13/2021] [Indexed: 11/28/2022]
Abstract
PURPOSE This study aimed to compare the three-dimensional volumetric changes of human maxillary sinuses after reconstruction using 5 different bone grafts. PATIENTS AND METHODS Patients underwent unilateral maxillary sinus bone height reconstruction using 5 bone substitutes allocated in different groups as follows: group 1 was grafted with autogenous bone graft alone; group 2 with beta-tricalcium phosphate (β-TCP); group 3 with β-TCP + autogenous bone graft 1:1; group 4 with bioactive glass; and group 5 with bioactive glass + autogenous bone graft 1:1. The patients were submitted to cone beam computed tomography in two periods: 15 days after the surgical procedure (T1) and after 6 months (T2). The results were evaluated as the formula T2-T1 expressing the three-volumetric changes of the biomaterials in elapsed time. RESULTS The resorption rate of autogenous bone graft was -630.699 ± 300.9 mm3; in the β-TCP group, it was -315.772 ± 125.6 mm3; in the group with β-TCP + autogenous bone graft 1:1, it was -336.205 ± 195.7 mm3; and in groups with bioactive glass and with the addition of autogenous bone graft 1:1, it was -428.878 ± 311.6 mm3 and -576.917 ± 471.6 mm3, respectively, without statistical difference (p = 0.167). Pearson's correlated test revealed a strong correlation as well as a progressive resorption of the grafts during bone healing. CONCLUSION The similar outcomes for the three-dimensional volumetric changes using the bone substitutes evaluated after 6 months of bone healing suggest that all these grafts can be performed to maxillary sinus reconstruction.
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Affiliation(s)
| | - Rodrigo Dos Santos Pereira
- Universidade do Grande Rio - UNIGRANRIO, Duque de Caxias, Brazil. .,UNIFESO - Centro Universitário Serra dos Órgãos, Teresópolis, Brazil.
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Section Plane Effects on Morphometric Values of Microcomputed Tomography. BIOMED RESEARCH INTERNATIONAL 2019; 2019:7905404. [PMID: 30792997 PMCID: PMC6354147 DOI: 10.1155/2019/7905404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 10/07/2018] [Accepted: 12/31/2018] [Indexed: 11/18/2022]
Abstract
Objectives Histomorphometry is the established gold standard for inspection of trabecular microstructures in biomaterial research. However, microcomputed tomography can provide images from the perspective of various section planes. The aim of the present study was to evaluate the effects of different section planes, which may cause bias in two-dimensional morphometry, on the morphometric values of microcomputed tomography. Methods A socket preservation technique was performed on the extracted premolar area of 4 beagle dogs. After an 8-week healing period, a total of 16 specimens were obtained and analyzed with conventional histomorphometry and microtomographic morphometry. Using the original images of the histologic specimens for comparison, the most similar tomographic image was selected by trial and error. Then, the section plane was then moved with ±79 μm parallel offsets and rotated ±10° around the center from the occlusal view. The images were compared in terms of bone, graft, and noncalcified area, and the concordance correlation coefficient (CCC) was calculated. Results There was a high CCC in the comparison between histomorphometric images and the most similar microtomographic images. However, the CCC value was low in the comparisons with both parallel movement and rotation. Our results demonstrate that the sectioning plane has a significant effect on measurements. Conclusion Two-dimensional morphometric values for biomaterial research should be interpreted with caution, and the simultaneous use of complementary 3-dimensional tools is recommended.
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Lauridsen T, Feidenhans'l R, Pinholt EM. Virtual histology uncertainty in synchrotron x-ray micro-computed tomography evaluation. J Craniomaxillofac Surg 2018; 46:1569-1575. [PMID: 30098873 DOI: 10.1016/j.jcms.2018.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 03/08/2018] [Accepted: 04/04/2018] [Indexed: 10/17/2022] Open
Abstract
A three-dimensional (3D) X-ray tomogram evaluation gives a full view of the bone distribution around an entire implant in contrast to the often-used two-dimensional (2D) histological methods. High-resolution X-ray absorption tomography was used to evaluate the 3D bone growth around dental implants in an experimental goat mandible reconstruction model. The tomograms allowed for the construction of virtual histological cross-sections that could be used to evaluate the statistical uncertainty of the histological methods, which was the purpose of this paper. The virtual 2D histological results showed a significantly higher uncertainty within the same sample than did the full 3D volume results.
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Affiliation(s)
- T Lauridsen
- Niels Bohr Institute, University of Copenhagen, Blegdamsvej 19, 2100 Copenhagen Ø, Denmark.
| | | | - E M Pinholt
- University of Southern Denmark, Faculty of Health Sciences, Institute of Regional Health Research & Research Center South West Denmark, Esbjerg, Denmark
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Neldam CA, Sporring J, Rack A, Lauridsen T, Hauge EM, Jørgensen HL, Jørgensen NR, Feidenhansl R, Pinholt EM. Synchrotron radiation μCT and histology evaluation of bone-to-implant contact. J Craniomaxillofac Surg 2017; 45:1448-1457. [DOI: 10.1016/j.jcms.2017.05.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 04/21/2017] [Accepted: 05/22/2017] [Indexed: 10/19/2022] Open
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Effect of a Particulate and a Putty-Like Tricalcium Phosphate-Based Bone-grafting Material on Bone Formation, Volume Stability and Osteogenic Marker Expression after Bilateral Sinus Floor Augmentation in Humans. J Funct Biomater 2017; 8:jfb8030031. [PMID: 28758916 PMCID: PMC5618282 DOI: 10.3390/jfb8030031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 07/25/2017] [Accepted: 07/25/2017] [Indexed: 01/25/2023] Open
Abstract
This study examines the effect of a hyaluronic acid (HyAc) containing tricalcium phosphate putty scaffold material (TCP-P) and of a particulate tricalcium phosphate (TCP-G) graft on bone formation, volume stability and osteogenic marker expression in biopsies sampled 6 months after bilateral sinus floor augmentation (SFA) in 7 patients applying a split-mouth design. 10% autogenous bone chips were added to the grafting material during surgery. The grain size of the TCP granules was 700 to 1400 µm for TCP-G and 125 to 250 µm and 500 to 700 µm (ratio 1:1) for TCP-P. Biopsies were processed for immunohistochemical analysis of resin-embedded sections. Sections were stained for collagen type I (Col I), alkaline phosphatase (ALP), osteocalcin (OC) and bone sialoprotein (BSP). Furthermore, the bone area and biomaterial area fraction were determined histomorphometrically. Cone-beam CT data recorded after SFA and 6 months later were used for calculating the graft volume at these two time points. TCP-P displayed more advantageous surgical handling properties and a significantly greater bone area fraction and smaller biomaterial area fraction. This was accompanied by significantly greater expression of Col I and BSP and in osteoblasts and osteoid and a less pronounced reduction in grafting volume with TCP-P. SFA using both types of materials resulted in formation of sufficient bone volume for facilitating stable dental implant placement with all dental implants having been in function without any complications for 6 years. Since TCP-P displayed superior surgical handling properties and greater bone formation than TCP-G, without the HyAc hydrogel matrix having any adverse effect on bone formation or graft volume stability, TCP-P can be regarded as excellent grafting material for SFA in a clinical setting. The greater bone formation observed with TCP-P may be related to the difference in grain size of the TCP granules and/or the addition of the HyAc.
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Bissinger O, Götz C, Jeschke A, Haller B, Wolff KD, Kaiser P, Kolk A. Comparison of contact radiographed and stained histological sections for osseointegration analysis of dental implants: an in vivo study. Oral Surg Oral Med Oral Pathol Oral Radiol 2017; 125:20-26. [PMID: 29079369 DOI: 10.1016/j.oooo.2017.06.118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Revised: 05/15/2017] [Accepted: 06/19/2017] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Histology is still regarded as the gold-standard to determine bone implant contact (BIC) as a parameter representing implant stability. As the further processing of cut slices for contact radiography (CR) to stained and polished histological sections is time consuming and error prone, our aim was to assess agreement between CR and Giemsa-eosin (GE) stained sections with regard to dental implants. STUDY DESIGN Threaded dental titanium implants (n = 54) from the maxillae of Goettingen minipigs were evaluated. After 28 and 56 days, BIC and the ratio of bone volume to total volume (BV/TV; 1000 μm) were determined on the same sections by using CR and GE staining, and the results were compared. RESULTS Moderate differences for BIC (0.6%; P = .53) and BV/TV (1.3%; P = .01) between the methods were determined, in which CR overestimated BIC and BV/TV. A strong correlation was seen between the modalities concerning BIC (28 days: r = 0.84; 56 days: r = 0.85; total: r = 0.85) and BV/TV (r = 0.96; r = 0.94; r = 0.96; all: P < .0001). CONCLUSIONS CR enabled determination of the bone-to-implant interface in comparison with GE-stained sections. BIC and BV/TV were slightly overestimated but correlated strongly between the methods. Therefore, if BIC and BV/TV are sufficient endpoints, CR is adequate and no further preparation and staining are necessary.
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Affiliation(s)
- Oliver Bissinger
- Department of Oral and Maxillofacial Surgery, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany.
| | - Carolin Götz
- Department of Oral and Maxillofacial Surgery, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Anke Jeschke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Bernhard Haller
- Institute of Medical Statistics and Epidemiology, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Klaus-Dietrich Wolff
- Department of Oral and Maxillofacial Surgery, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Pascal Kaiser
- Department of Oral and Maxillofacial Surgery, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany; Department of Oral and Maxillofacial Plastic Surgery, University Hospital Würzburg, Würzburg, Germany
| | - Andreas Kolk
- Department of Oral and Maxillofacial Surgery, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
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Bissinger O, Probst FA, Wolff KD, Jeschke A, Weitz J, Deppe H, Kolk A. Comparative 3D micro-CT and 2D histomorphometry analysis of dental implant osseointegration in the maxilla of minipigs. J Clin Periodontol 2017; 44:418-427. [DOI: 10.1111/jcpe.12693] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Oliver Bissinger
- Department of Oral and Maxillofacial Surgery; Klinikum rechts der Isar der Technischen Universität München; Munich Germany
| | - Florian Andreas Probst
- Department of Oral and Maxillofacial Surgery; Ludwig-Maximilians-University of Munich; Munich Germany
| | - Klaus-Dietrich Wolff
- Department of Oral and Maxillofacial Surgery; Klinikum rechts der Isar der Technischen Universität München; Munich Germany
| | - Anke Jeschke
- Department of Osteology and Biomechanics; University Medical Center Hamburg-Eppendorf; Hamburg Germany
| | - Jochen Weitz
- Department of Oral and Maxillofacial Surgery; Klinikum rechts der Isar der Technischen Universität München; Munich Germany
| | - Herbert Deppe
- Department of Oral and Maxillofacial Surgery; Klinikum rechts der Isar der Technischen Universität München; Munich Germany
| | - Andreas Kolk
- Department of Oral and Maxillofacial Surgery; Klinikum rechts der Isar der Technischen Universität München; Munich Germany
- Institute of Molecular Immunology - Experimental Oncology; Klinikum rechts der Isar der Technischen Universität München; Munich Germany
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Smeets R, Knabe C, Kolk A, Rheinnecker M, Gröbe A, Heiland M, Zehbe R, Sachse M, Große-Siestrup C, Wöltje M, Hanken H. Novel silk protein barrier membranes for guided bone regeneration. J Biomed Mater Res B Appl Biomater 2016; 105:2603-2611. [DOI: 10.1002/jbm.b.33795] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 08/30/2016] [Accepted: 09/12/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Ralf Smeets
- Department of Oral and Maxillofacial Surgery; University Medical Center Hamburg-Eppendorf; Hamburg Germany
| | - Christine Knabe
- Department of Experimental Orofacial Medicine; Philipps University Marburg; Marburg Germany
| | - Andreas Kolk
- Department of Oral- and Cranio-Maxillofacial Surgery; Klinikum rechts der Isar der Technischen Universität München; Munich Germany
| | | | - Alexander Gröbe
- Department of Oral and Maxillofacial Surgery; University Medical Center Hamburg-Eppendorf; Hamburg Germany
| | - Max Heiland
- Department of Oral and Maxillofacial Surgery; University Medical Center Hamburg-Eppendorf; Hamburg Germany
| | | | - Manuela Sachse
- Department of Experimental Orofacial Medicine; Philipps University Marburg; Marburg Germany
| | | | - Michael Wöltje
- Institute of Textile Machinery and High Performance Material Technology, Technische Universität Dresden; 01069 Dresden Germany
| | - Henning Hanken
- Department of Oral and Maxillofacial Surgery; University Medical Center Hamburg-Eppendorf; Hamburg Germany
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Santos TDS, Abuna RPF, Almeida ALGD, Beloti MM, Rosa AL. Effect of collagen sponge and fibrin glue on bone repair. J Appl Oral Sci 2016; 23:623-8. [PMID: 26814464 PMCID: PMC4716700 DOI: 10.1590/1678-775720150374] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 09/25/2015] [Indexed: 02/02/2023] Open
Abstract
The ability of hemostatic agents to promote bone repair has been investigated using in vitro and in vivo models but, up to now, the results are inconclusive.
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Affiliation(s)
- Thiago de Santana Santos
- Laboratório de Cultura de Células, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Rodrigo Paolo Flores Abuna
- Laboratório de Cultura de Células, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | | | - Marcio Mateus Beloti
- Laboratório de Cultura de Células, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Adalberto Luiz Rosa
- Laboratório de Cultura de Células, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
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Freitas GP, Lopes HB, Martins-Neto EC, de Oliveira PT, Beloti MM, Rosa AL. Effect of Surface Nanotopography on Bone Response to Titanium Implant. J ORAL IMPLANTOL 2016; 42:240-7. [DOI: 10.1563/aaid-joi-d-14-00254] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Clinical success of implant therapy is directly related to titanium (Ti) surface properties and the quality of bone tissue. The treatment of Ti implants with H2SO4/H2O2 is a feasible, reproducible, and low-cost technique to create surface nanotopography (Ti-Nano). As this nanotopography induces osteoblast differentiation, we hypothesized that it may affect bone response to Ti. Thus, this study was designed to evaluate the bone response to a machined Ti implant treated with H2SO4/H2O2 to generate Ti-Nano and to compare it with a commercially available microtopographic Ti implant (Ti-Porous). Implants were placed in rabbit tibias and evaluated after 2 and 6 weeks, and the bone tissue formed around them was assessed by microtomography to record bone volume, bone surface, specific bone surface, trabecular number, trabecular thickness, and trabecular separation. Undecalcified histological sections were used to determine the percentages of bone-to-implant contact, bone area formed between threads, and bone area formed in the mirror area. At the end of 6 weeks, the removal torque was evaluated using a digital torque gauge. The results showed bone formation in close contact with both Ti-Nano and Ti-Porous implants without relevant morphological and morphometric differences, in addition to a similar removal torque irrespective of surface topography. In conclusion, our results have shown that a simple and low-cost method using H2SO4/H2O2 is highly efficient for creating nanotopography on Ti surfaces, which elicits a similar bone response compared with microtopography presented in a commercially available Ti implant.
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Affiliation(s)
- Gileade P. Freitas
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Helena B. Lopes
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Evandro C. Martins-Neto
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Paulo T. de Oliveira
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Marcio M. Beloti
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Adalberto L. Rosa
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
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Quantification of bone regeneration by virtual slices using non-destructive synchrotron X-ray microtomography. Tissue Eng Regen Med 2015. [DOI: 10.1007/s13770-015-0003-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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13
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Hassan MN, Mahmoud MM, El-Fattah AA, Kandil S. Microwave rapid conversion of sol–gel-derived hydroxyapatite into β-tricalcium phosphate. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY 2015; 76:74-81. [DOI: 10.1007/s10971-015-3753-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Gorla LFDO, Spin-Neto R, Boos FBDJ, Pereira RDS, Garcia-Junior IR, Hochuli-Vieira E. Use of autogenous bone and beta-tricalcium phosphate in maxillary sinus lifting: a prospective, randomized, volumetric computed tomography study. Int J Oral Maxillofac Surg 2015; 44:1486-91. [PMID: 26232120 DOI: 10.1016/j.ijom.2015.07.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 03/21/2015] [Accepted: 07/09/2015] [Indexed: 11/16/2022]
Abstract
The correction of bone defects can be performed using autogenous or alloplastic materials, such as beta-tricalcium phosphate (β-TCP). This study compared the changes in bone volume (CBV) after maxillary sinus lifting using autogenous bone (n = 12), autogenous bone associated with β-TCP 1:1 (ChronOS; DePuy Synthes, Paoli, CA, USA) (n = 9), and β-TCP alone (n = 11) as grafting material, by means of cone beam computed tomography (CBCT). CBV was evaluated by comparing CBCT scans obtained in the immediate postoperative period (5-7 days) and at 6 months postoperative in each group using OsiriX software (OsiriX Foundation, Geneva, Switzerland). The results showed an average resorption of 45.7 ± 18.6% for the autogenous bone group, 43.8 ± 18.4% for the autogenous bone+β-TCP group, and 38.3 ± 16.6% for the β-TCP group. All bone substitute materials tested in this study presented satisfactory results for maxillary sinus lifting procedures regarding the maintenance of graft volume during the healing phase before the insertion of implants, as assessed by means of CBCT.
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Affiliation(s)
- L F de O Gorla
- Department of Oral and Maxillofacial Surgery, Dental School at Araraquara, UNESP, Araraquara, São Paulo, Brazil
| | - R Spin-Neto
- Department of Oral Radiology, School of Dentistry, Aarhus University, Aarhus, Denmark
| | - F B D J Boos
- Department of Oral and Maxillofacial Surgery, Dental School at Araçatuba, UNESP, Araçatuba, São Paulo, Brazil
| | - R dos S Pereira
- Department of Oral and Maxillofacial Surgery, Dental School at Araçatuba, UNESP, Araçatuba, São Paulo, Brazil
| | - I R Garcia-Junior
- Department of Oral and Maxillofacial Surgery, Dental School at Araçatuba, UNESP, Araçatuba, São Paulo, Brazil
| | - E Hochuli-Vieira
- Department of Oral and Maxillofacial Surgery, Dental School at Araraquara, UNESP, Araraquara, São Paulo, Brazil.
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Neldam CA, Lauridsen T, Rack A, Lefolii TT, Jørgensen NR, Feidenhans’l R, Pinholt EM. Application of high resolution synchrotron micro-CT radiation in dental implant osseointegration. J Craniomaxillofac Surg 2015; 43:682-7. [DOI: 10.1016/j.jcms.2015.03.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 03/16/2015] [Accepted: 03/18/2015] [Indexed: 10/23/2022] Open
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Neldam CA, Pinholt EM. Synchrotron μCT imaging of bone, titanium implants and bone substitutes – A systematic review of the literature. J Craniomaxillofac Surg 2014; 42:801-5. [DOI: 10.1016/j.jcms.2013.11.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 08/25/2013] [Accepted: 11/04/2013] [Indexed: 01/04/2023] Open
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17
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Stiller M, Kluk E, Bohner M, Lopez-Heredia MA, Müller-Mai C, Knabe C. Performance of β-tricalcium phosphate granules and putty, bone grafting materials after bilateral sinus floor augmentation in humans. Biomaterials 2014; 35:3154-63. [DOI: 10.1016/j.biomaterials.2013.12.068] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 12/20/2013] [Indexed: 12/01/2022]
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18
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Lopes HB, Santos TDS, de Oliveira FS, Freitas GP, de Almeida ALG, Gimenes R, Rosa AL, Beloti MM. Poly(vinylidene-trifluoroethylene)/barium titanate composite for in vivo support of bone formation. J Biomater Appl 2013; 29:104-12. [DOI: 10.1177/0885328213515735] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In this study, we evaluated the effect of poly(vinylidene fluoride-trifluoroethylene)/barium titanate (P(VDF-TrFE)/BT) membrane on in vivo bone formation. Rat calvarial bone defects were implanted with P(VDF-TrFE)/BT and polytetrafluoroethylene (PTFE) membranes, and at 4 and 8 weeks, histomorphometric and gene expression analyses were performed. A higher amount of bone formation was noticed on P(VDF-TrFE)/BT compared with PTFE. The gene expression of RUNX2, bone sialoprotein, osteocalcin, receptor activator of nuclear factor-kappa B ligand, and osteoprotegerin indicates that P(VDF-TrFE)/BT favored the osteoblast differentiation compared with PTFE. These results evidenced the benefits of using P(VDF-TrFE)/BT to promote new bone formation, which may represent a promising alternative to be employed in guided bone regeneration.
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Affiliation(s)
- Helena B Lopes
- Cell Culture Laboratory, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Thiago de S Santos
- Cell Culture Laboratory, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Fabiola S de Oliveira
- Cell Culture Laboratory, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Gileade P Freitas
- Cell Culture Laboratory, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Adriana LG de Almeida
- Cell Culture Laboratory, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Rossano Gimenes
- Institute of Physics and Chemistry, Federal University of Itajubá, Itajubá, MG, Brazil
| | - Adalberto L Rosa
- Cell Culture Laboratory, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Marcio M Beloti
- Cell Culture Laboratory, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
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19
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de Lange GL, Overman JR, Farré-Guasch E, Korstjens CM, Hartman B, Langenbach GEJ, Van Duin MA, Klein-Nulend J. A histomorphometric and micro-computed tomography study of bone regeneration in the maxillary sinus comparing biphasic calcium phosphate and deproteinized cancellous bovine bone in a human split-mouth model. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 117:8-22. [PMID: 24182597 DOI: 10.1016/j.oooo.2013.08.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 07/01/2013] [Accepted: 08/09/2013] [Indexed: 10/26/2022]
Abstract
OBJECTIVE The gain of mineralized bone was compared between deproteinized bovine bone allograft (DBA) and biphasic calcium phosphate (BCP) for dental implant placement. STUDY DESIGN Five patients with atrophic maxillae underwent bilateral sinus elevation with DBA (Bio-Oss) and BCP (Straumann BoneCeramic). After 3 to 8 months, 32 Camlog implants were placed, and biopsies were retrieved. Bone and graft volume, degree of bone mineralization, and graft degradation gradient were determined using micro-computed tomography, and bone formation and resorption parameters were measured using histomorphometry. Implant functioning and peri-implant mucosa were evaluated up to 4 years. RESULTS Patients were prosthetically successfully restored. All but one of the implants survived, and peri-implant mucosa showed healthy appearance and stability. Bone volume, graft volume, degree of bone mineralization, and osteoclast and osteocyte numbers were similar, but BCP-grafted biopsies had relatively more osteoid than DBA-grafted biopsies. CONCLUSIONS The BCP and DBA materials showed similar osteoconductive patterns and mineralized bone, although signs of more active bone formation and remodeling were observed in BCP- than in DBA-grafted biopsies.
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Affiliation(s)
- Gert L de Lange
- Academic Center Oral Implantology Amstelveen, Amstelveen, The Netherlands
| | - Janice R Overman
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, and VU University Amsterdam, Amsterdam, The Netherlands; MOVE Research Institute Amsterdam, Amsterdam, The Netherlands
| | - Elisabet Farré-Guasch
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, and VU University Amsterdam, Amsterdam, The Netherlands; MOVE Research Institute Amsterdam, Amsterdam, The Netherlands
| | - Clara M Korstjens
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, and VU University Amsterdam, Amsterdam, The Netherlands; MOVE Research Institute Amsterdam, Amsterdam, The Netherlands
| | - Bastiaan Hartman
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, and VU University Amsterdam, Amsterdam, The Netherlands; MOVE Research Institute Amsterdam, Amsterdam, The Netherlands
| | - Geerling E J Langenbach
- Department of Functional Anatomy, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, and VU University Amsterdam, Amsterdam, The Netherlands; MOVE Research Institute Amsterdam, Amsterdam, The Netherlands
| | - Marion A Van Duin
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, and VU University Amsterdam, Amsterdam, The Netherlands; MOVE Research Institute Amsterdam, Amsterdam, The Netherlands
| | - Jenneke Klein-Nulend
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, and VU University Amsterdam, Amsterdam, The Netherlands; MOVE Research Institute Amsterdam, Amsterdam, The Netherlands.
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20
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Soardi CM, Clozza E, Turco G, Biasotto M, Engebretson SP, Wang HL, Zaffe D. Microradiography and microcomputed tomography comparative analysis in human bone cores harvested after maxillary sinus augmentation: a pilot study. Clin Oral Implants Res 2013; 25:1161-8. [PMID: 23796003 DOI: 10.1111/clr.12225] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2013] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The aim of this study was to compare microradiography (MR) and microcomputed tomography (μCT) analysis of bone samples following maxillary sinus augmentation at different time periods and determine the relationships between measured area and volume fractions. MATERIALS AND METHODS Lateral window sinus grafts were performed on 10 patients using a mineralized human bone allograft (MHBA). At implant placement, 5-13 months after surgery, 10 bone core biopsies were harvested. Prior to histologic sectioning, bone samples were evaluated with μCT. The morphometric parameters computed by MR and μCT were compared using Pearson's correlation and Bland and Altman analysis and included hard tissue fraction (HV/TV:%), soft tissue fraction (SV/TV:%), vital bone fraction (BV/TV:%) and residual graft fraction (GV/TV:%). RESULTS Strong positive correlation between MR and μCT was found for HV/TV and SV/TV and BV/TV [r = 0.84, 0.84 and 0.69, respectively] but weak for GV/TV [r = 0.10]. CONCLUSION μCT technology shows promising potential as an indicator of bone morphology changes; however, caution should be used in interpreting morphometric parameters, as the different methods reveal important biases.
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21
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Beck A, Nehrbass D, Stoddart MJ, Schiuma D, Green J, Lansdowne JL, Richards RG, Bouré LP. The use of Reamer Irrigator Aspirator (RIA) autograft harvest in the treatment of critical-sized iliac wing defects in sheep: investigation of dexamethasone and beta-tricalcium phosphate augmentation. Bone 2013; 53:554-65. [PMID: 23274345 DOI: 10.1016/j.bone.2012.12.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 12/17/2012] [Accepted: 12/18/2012] [Indexed: 11/24/2022]
Abstract
Bone grafts are commonly used for the treatment of segmental bone defects and fracture non-unions. Recently, osseous particles obtained during intermedullary canal reaming (using a Reamer-Irrigator-Aspirator (RIA) device) have been evaluated as graft material during in vitro and clinical studies. The aim of this study was to evaluate and quantify new bone formation after implantation of bone graft material obtained after reaming of the tibia in a bilateral critical-sized iliac wing defect in sheep and to investigate the effect of the augmentation of this graft. A reamer bone graft alone, or after short term incubation in a dexamethasone enriched solution, and a reamer graft collected using beta-tricalcium phosphate (β-TCP) granules in the filter of the RIA collection device were compared to autologous iliac wing graft. In addition, reamer graft was combined with the cellular fraction collected from the irrigation fluid with and without short-term incubation in a dexamethasone enriched solution. It was hypothesized that the amount of physical bone in the reamer bone graft groups would be higher than the amount in the autologous iliac wing graft group and that augmentation of a reamer bone graft would increase bone formation. Three months after implantation, the amount of new bone formation (as percentage of the total defect volume) in the defects was evaluated ex-vivo by means of micro-CT and histomorphometry. The mean amount of bone in the autologous iliac wing graft group was 17.7% and 16.8% for micro-CT and histomorphometry, respectively. The mean amount of bone in all reamer graft groups ranged between 20.4-29.2% (micro-CT) and 17.0-25.4% (histomorphometry). Reamer graft collected using β-TCP granules (29.2±1.7%) in the filter produced a significantly higher amount of bone in comparison to an autologous iliac wing graft evaluated by micro-CT. RIA bone grafts added a small increase in bone volume to the 3month graft volume in this preclinical sheep model. The current model does not support the use of short-term high concentration dexamethasone for augmentation of a graft volume. If avoidance of an iliac wing graft is desirable, or a reaming procedure is required, then a RIA graft or RIA graft plus β-TCP granules are as good as the current gold standard for this model.
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Affiliation(s)
- Aswin Beck
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos Platz, Switzerland.
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22
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Cuijpers VMJI, Jaroszewicz J, Anil S, Al Farraj Aldosari A, Walboomers XF, Jansen JA. Resolution, sensitivity, and in vivo
application of high-resolution computed tomography for titanium-coated polymethyl methacrylate (PMMA) dental implants. Clin Oral Implants Res 2013; 25:359-365. [DOI: 10.1111/clr.12128] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/22/2012] [Indexed: 12/01/2022]
Affiliation(s)
- Vincent M. J. I. Cuijpers
- Department of Biomaterials; Radboud University Nijmegen Medical Centre; P.O. Box 9101 6500 HB Nijmegen The Netherlands
| | - Jacub Jaroszewicz
- Faculty of Materials Science and Engineering; Warsaw University of Technology; Wołoska 141 Warszawa 02-507 Poland
| | - Sukumaran Anil
- Department of Periodontics and Community Dentistry; College of Dentistry; King Saud University; Riyadh Saudi Arabia
| | | | - X. Frank Walboomers
- Department of Biomaterials; Radboud University Nijmegen Medical Centre; P.O. Box 9101 6500 HB Nijmegen The Netherlands
| | - John A. Jansen
- Department of Biomaterials; Radboud University Nijmegen Medical Centre; P.O. Box 9101 6500 HB Nijmegen The Netherlands
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Weitkamp T, Haas D, Wegrzynek D, Rack A. ANKAphase: software for single-distance phase retrieval from inline X-ray phase-contrast radiographs. JOURNAL OF SYNCHROTRON RADIATION 2011; 18:617-629. [PMID: 21685680 DOI: 10.1107/s0909049511002895] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2010] [Accepted: 01/21/2011] [Indexed: 05/28/2023]
Abstract
A computer program named ANKAphase is presented that processes X-ray inline phase-contrast radiographs by reconstructing the projected thickness of the object(s) imaged. The program uses a single-distance non-iterative phase-retrieval algorithm described by David Paganin et al. [(2002), J. Microsc. 206, 33-40]. Allowing for non-negligible absorption in the sample, this method is strictly valid only for monochromatic illumination and single-material objects but tolerates deviations from these conditions, especially polychromaticity. ANKAphase is designed to be applied to tomography data (although it does not perform tomographic reconstruction itself). It can process series of images and perform flat-field and dark-field correction. Written in Java, ANKAphase has an intuitive graphical user interface and can be run either as a stand-alone application or as a plugin to ImageJ, a widely used scientific image-processing program. A description of ANKAphase is given and example applications are shown.
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Affiliation(s)
- T Weitkamp
- Synchrotron Soleil, Gif-sur-Yvette, France.
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24
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3D histomorphometric quantification of trabecular bones by computed microtomography using synchrotron radiation. Micron 2010; 41:990-6. [DOI: 10.1016/j.micron.2010.06.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2010] [Revised: 06/23/2010] [Accepted: 06/25/2010] [Indexed: 11/19/2022]
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25
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Kaner D, Friedmann A. Soft tissue expansion with self-filling osmotic tissue expanders before vertical ridge augmentation: a proof of principle study. J Clin Periodontol 2010; 38:95-101. [DOI: 10.1111/j.1600-051x.2010.01630.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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26
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Rack A, Rack T, Stiller M, Riesemeier H, Zabler S, Nelson K. In vitro synchrotron-based radiography of micro-gap formation at the implant-abutment interface of two-piece dental implants. JOURNAL OF SYNCHROTRON RADIATION 2010; 17:289-94. [PMID: 20157285 PMCID: PMC2823585 DOI: 10.1107/s0909049510001834] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Accepted: 01/14/2010] [Indexed: 05/26/2023]
Abstract
Micro-gap formation at the implant-abutment interface of two-piece dental implants was investigated in vitro using high-resolution radiography in combination with hard X-ray synchrotron radiation. Images were taken with the specimen under different mechanical loads of up to 100 N. The aim of this investigation was to prove the existence of micro-gaps for implants with conical connections as well as to study the mechanical behavior of the mating zone of conical implants during loading. Synchrotron-based radiography in comparison with classical laboratory radiography yields high spatial resolution in combination with high contrast even when exploiting micro-sized features in highly attenuating objects. The first illustration of a micro-gap which was previously indistinguishable by laboratory methods underlines that the complex micro-mechanical behavior of implants requires further in vitro investigations where synchrotron-based micro-imaging is one of the prerequisites.
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Affiliation(s)
- A Rack
- European Synchrotron Radiation Facility, Grenoble, France.
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