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Kiarashi M, Bayat H, Shahrtash SA, Etajuri EA, Khah MM, Al-Shaheri NA, Nasiri K, Esfahaniani M, Yasamineh S. Mesenchymal Stem Cell-based Scaffolds in Regenerative Medicine of Dental Diseases. Stem Cell Rev Rep 2024; 20:688-721. [PMID: 38308730 DOI: 10.1007/s12015-024-10687-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/23/2024] [Indexed: 02/05/2024]
Abstract
Biomedical engineering breakthroughs and increased patient expectations and requests for more comprehensive care are propelling the field of regenerative dentistry forward at a fast pace. Stem cells (SCs), bioactive compounds, and scaffolds are the mainstays of tissue engineering, the backbone of regenerative dentistry. Repairing damaged teeth and gums is a significant scientific problem at present. Novel therapeutic approaches for tooth and periodontal healing have been inspired by tissue engineering based on mesenchymal stem cells (MSCs). Furthermore, as a component of the MSC secretome, extracellular vesicles (EVs) have been shown to contribute to periodontal tissue repair and regeneration. The scaffold, made of an artificial extracellular matrix (ECM), acts as a supporting structure for new cell development and tissue formation. To effectively promote cell development, a scaffold must be non-toxic, biodegradable, biologically compatible, low in immunogenicity, and safe. Due to its promising biological characteristics for cell regeneration, dental tissue engineering has recently received much attention for its use of natural or synthetic polymer scaffolds with excellent mechanical properties, such as small pore size and a high surface-to-volume ratio, as a matrix. Moreover, as a bioactive material for carrying MSC-EVs, the combined application of scaffolds and MSC-EVs has a better regenerative effect on dental diseases. In this paper, we discuss how MSCs and MSC-derived EV treatment may be used to regenerate damaged teeth, and we highlight the role of various scaffolds in this process.
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Affiliation(s)
- Mohammad Kiarashi
- College of Dentistry, Lorestan University of Medical Sciences, Khorramabad, Iran
| | | | | | - Enas Abdalla Etajuri
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Meysam Mohammadi Khah
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Kamyar Nasiri
- Department of Dentistry, Islamic Azad University of Medical Sciences, Tehran, Iran.
| | - Mahla Esfahaniani
- Faculty of Dentistry, Golestan University of Medical Sciences, Gorgan, Iran.
| | - Saman Yasamineh
- Young Researchers and Elite Club, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
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Bradford JP, Hernandez-Moreno G, Pillai RR, Hernandez-Nichols AL, Thomas V. Low-Temperature Plasmas Improving Chemical and Cellular Properties of Poly (Ether Ether Ketone) Biomaterial for Biomineralization. MATERIALS (BASEL, SWITZERLAND) 2023; 17:171. [PMID: 38204023 PMCID: PMC10780010 DOI: 10.3390/ma17010171] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/05/2023] [Accepted: 12/07/2023] [Indexed: 01/12/2024]
Abstract
Osteoblastic and chemical responses to Poly (ether ether ketone) (PEEK) material have been improved using a variety of low-temperature plasmas (LTPs). Surface chemical properties are modified, and can be used, using low-temperature plasma (LTP) treatments which change surface functional groups. These functional groups increase biomineralization, in simulated body fluid conditions, and cellular viability. PEEK scaffolds were treated, with a variety of LTPs, incubated in simulated body fluids, and then analyzed using multiple techniques. First, scanning electron microscopy (SEM) showed morphological changes in the biomineralization for all samples. Calcein staining, Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) confirmed that all low-temperature plasma-treated groups showed higher levels of biomineralization than the control group. MTT cell viability assays showed LTP-treated groups had increased cell viability in comparison to non-LTP-treated controls. PEEK treated with triethyl phosphate plasma (TEP) showed higher levels of cellular viability at 82.91% ± 5.00 (n = 6) and mineralization. These were significantly different to both the methyl methacrylate (MMA) 77.38% ± 1.27, ethylene diamine (EDA) 64.75% ± 6.43 plasma-treated PEEK groups, and the control, non-plasma-treated group 58.80 ± 2.84. FTIR showed higher levels of carbonate and phosphate formation on the TEP-treated PEEK than the other samples; however, calcein staining fluorescence of MMA and TEP-treated PEEK had the highest levels of biomineralization measured by pixel intensity quantification of 101.17 ± 4.63 and 96.35 ± 3.58, respectively, while EDA and control PEEK samples were 89.53 ± 1.74 and 90.49 ± 2.33, respectively. Comparing different LTPs, we showed that modified surface chemistry has quantitatively measurable effects that are favorable to the cellular, biomineralization, and chemical properties of PEEK.
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Affiliation(s)
- John P. Bradford
- Polymer and Healthcare Material/Devices, Department of Mechanical and Materials Engineering, The University of Alabama, Birmingham, AL 35294, USA; (J.P.B.); (G.H.-M.); (R.R.P.)
| | - Gerardo Hernandez-Moreno
- Polymer and Healthcare Material/Devices, Department of Mechanical and Materials Engineering, The University of Alabama, Birmingham, AL 35294, USA; (J.P.B.); (G.H.-M.); (R.R.P.)
| | - Renjith R. Pillai
- Polymer and Healthcare Material/Devices, Department of Mechanical and Materials Engineering, The University of Alabama, Birmingham, AL 35294, USA; (J.P.B.); (G.H.-M.); (R.R.P.)
| | - Alexandria L. Hernandez-Nichols
- Department of Cellular and Molecular Pathology, Heersink School of Medicine, The University of Alabama, Birmingham, AL 35294, USA;
- Center for Free Radical Biology, The University of Alabama, Birmingham, AL 35294, USA
| | - Vinoy Thomas
- Polymer and Healthcare Material/Devices, Department of Mechanical and Materials Engineering, The University of Alabama, Birmingham, AL 35294, USA; (J.P.B.); (G.H.-M.); (R.R.P.)
- Department of Physics, Center for Nanoscale Materials and Bio-Integration (CNMB), The University of Alabama, Birmingham, AL 35294, USA
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Szwed-Georgiou A, Płociński P, Kupikowska-Stobba B, Urbaniak MM, Rusek-Wala P, Szustakiewicz K, Piszko P, Krupa A, Biernat M, Gazińska M, Kasprzak M, Nawrotek K, Mira NP, Rudnicka K. Bioactive Materials for Bone Regeneration: Biomolecules and Delivery Systems. ACS Biomater Sci Eng 2023; 9:5222-5254. [PMID: 37585562 PMCID: PMC10498424 DOI: 10.1021/acsbiomaterials.3c00609] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 07/31/2023] [Indexed: 08/18/2023]
Abstract
Novel tissue regeneration strategies are constantly being developed worldwide. Research on bone regeneration is noteworthy, as many promising new approaches have been documented with novel strategies currently under investigation. Innovative biomaterials that allow the coordinated and well-controlled repair of bone fractures and bone loss are being designed to reduce the need for autologous or allogeneic bone grafts eventually. The current engineering technologies permit the construction of synthetic, complex, biomimetic biomaterials with properties nearly as good as those of natural bone with good biocompatibility. To ensure that all these requirements meet, bioactive molecules are coupled to structural scaffolding constituents to form a final product with the desired physical, chemical, and biological properties. Bioactive molecules that have been used to promote bone regeneration include protein growth factors, peptides, amino acids, hormones, lipids, and flavonoids. Various strategies have been adapted to investigate the coupling of bioactive molecules with scaffolding materials to sustain activity and allow controlled release. The current manuscript is a thorough survey of the strategies that have been exploited for the delivery of biomolecules for bone regeneration purposes, from choosing the bioactive molecule to selecting the optimal strategy to synthesize the scaffold and assessing the advantages and disadvantages of various delivery strategies.
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Affiliation(s)
- Aleksandra Szwed-Georgiou
- Department
of Immunology and Infectious Biology, Faculty of Biology and Environmental
Protection, University of Lodz, Lodz 90-136, Poland
| | - Przemysław Płociński
- Department
of Immunology and Infectious Biology, Faculty of Biology and Environmental
Protection, University of Lodz, Lodz 90-136, Poland
| | - Barbara Kupikowska-Stobba
- Biomaterials
Research Group, Lukasiewicz Research Network
- Institute of Ceramics and Building Materials, Krakow 31-983, Poland
| | - Mateusz M. Urbaniak
- Department
of Immunology and Infectious Biology, Faculty of Biology and Environmental
Protection, University of Lodz, Lodz 90-136, Poland
- The
Bio-Med-Chem Doctoral School, University of Lodz and Lodz Institutes
of the Polish Academy of Sciences, University
of Lodz, Lodz 90-237, Poland
| | - Paulina Rusek-Wala
- Department
of Immunology and Infectious Biology, Faculty of Biology and Environmental
Protection, University of Lodz, Lodz 90-136, Poland
- The
Bio-Med-Chem Doctoral School, University of Lodz and Lodz Institutes
of the Polish Academy of Sciences, University
of Lodz, Lodz 90-237, Poland
| | - Konrad Szustakiewicz
- Department
of Polymer Engineering and Technology, Faculty of Chemistry, Wroclaw University of Technology, Wroclaw 50-370, Poland
| | - Paweł Piszko
- Department
of Polymer Engineering and Technology, Faculty of Chemistry, Wroclaw University of Technology, Wroclaw 50-370, Poland
| | - Agnieszka Krupa
- Department
of Immunology and Infectious Biology, Faculty of Biology and Environmental
Protection, University of Lodz, Lodz 90-136, Poland
| | - Monika Biernat
- Biomaterials
Research Group, Lukasiewicz Research Network
- Institute of Ceramics and Building Materials, Krakow 31-983, Poland
| | - Małgorzata Gazińska
- Department
of Polymer Engineering and Technology, Faculty of Chemistry, Wroclaw University of Technology, Wroclaw 50-370, Poland
| | - Mirosław Kasprzak
- Biomaterials
Research Group, Lukasiewicz Research Network
- Institute of Ceramics and Building Materials, Krakow 31-983, Poland
| | - Katarzyna Nawrotek
- Faculty
of Process and Environmental Engineering, Lodz University of Technology, Lodz 90-924, Poland
| | - Nuno Pereira Mira
- iBB-Institute
for Bioengineering and Biosciences, Department of Bioengineering, Instituto Superior Técnico, Universidade de
Lisboa, Lisboa 1049-001, Portugal
- Associate
Laboratory i4HB-Institute for Health and Bioeconomy at Instituto Superior
Técnico, Universidade de Lisboa, Lisboa 1049-001, Portugal
- Instituto
Superior Técnico, Universidade de Lisboa, Lisboa 1049-001, Portugal
| | - Karolina Rudnicka
- Department
of Immunology and Infectious Biology, Faculty of Biology and Environmental
Protection, University of Lodz, Lodz 90-136, Poland
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Kyyak S, Blatt S, Wiesmann N, Smeets R, Kaemmerer PW. Hyaluronic Acid with Bone Substitutes Enhance Angiogenesis In Vivo. MATERIALS 2022; 15:ma15113839. [PMID: 35683136 PMCID: PMC9181602 DOI: 10.3390/ma15113839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/15/2022] [Accepted: 05/23/2022] [Indexed: 12/04/2022]
Abstract
Introduction: The effective induction of angiogenesis is directly related to the success of bone-substitute materials (BSM) for maxillofacial osseous regeneration. Therefore, the addition of pro-angiogenic properties to a commercially available bovine bone-substitute material in combination with hyaluronic acid (BSM+) was compared to the same bone-substitute material without hyaluronic acid (BSM) in an in-vivo model. Materials and Methods: BSM+ and BSM were incubated for six days on the chorioallantoic membrane (CAM) of fertilized chicken eggs. Microscopically, the number of vessels and branching points, the vessel area and vessel length were evaluated. Subsequently, the total vessel area and brightness integration were assessed after immunohistochemical staining (H&E, alphaSMA). Results: In the BSM+ group, a significantly higher number of vessels (p < 0.001), branching points (p = 0.001), total vessel area (p < 0.001) as well as vessel length (p = 0.001) were found in comparison to the BSM group without hyaluronic acid. Immunohistochemically, a significantly increased total vessel area (p < 0.001 for H&E, p = 0.037 for alphaSMA) and brightness integration (p = 0.047) for BSM+ in comparison to the native material were seen. Conclusions: The combination of a xenogenic bone-substitute material with hyaluronic acid significantly induced angiogenesis in vivo. This might lead to a faster integration and an improved healing in clinical situations.
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Affiliation(s)
- Solomiya Kyyak
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131 Mainz, Germany; (S.K.); (S.B.); (N.W.)
| | - Sebastian Blatt
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131 Mainz, Germany; (S.K.); (S.B.); (N.W.)
| | - Nadine Wiesmann
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131 Mainz, Germany; (S.K.); (S.B.); (N.W.)
- Department of Otorhinolaryngology, University Medical Center Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Ralf Smeets
- Division “Regenerative Orofacial Medicine”, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany;
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
| | - Peer W. Kaemmerer
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131 Mainz, Germany; (S.K.); (S.B.); (N.W.)
- Correspondence:
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Giacon TA, Giancola F, Paganini M, Tiengo C, Camporesi EM, Bosco G. Hyperbaric Oxygen Therapy and A-PRF Pre-Treated Implants in Severe Periodontitis: A Case Report. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:E413. [PMID: 33430249 PMCID: PMC7825644 DOI: 10.3390/ijerph18020413] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/29/2020] [Accepted: 01/05/2021] [Indexed: 12/11/2022]
Abstract
Implantation is currently the best option for tooth replacement in periodontitis. Some major contraindications for the immediate implant are acute periodontitis and active infection. We present the case of a 51-year-old female patient with the highest grade and stage periodontitis treated with advanced platelet-rich fibrin-enriched zirconia implants and with hyperbaric oxygen therapy (HBOT). In particular, HBOT before and after implantation promoted bone regeneration and implant integration, also providing an antiseptic effect. After six months, the implants were well established and fully healed from periodontal disease within 14 months. Further research could confirm a new indication for HBOT in treating periodontitis and dental implantation.
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Affiliation(s)
- Tommaso Antonio Giacon
- Department of Biomedical Sciences, Environmental and Respiratory Physiology, University of Padova, Via Marzolo 3, 35131 Padova, Italy;
| | - Franco Giancola
- Clinica Europea Implantologia Ceramica, Domus Medica, 47890 Città di San Marino, San Marino;
| | - Matteo Paganini
- Department of Biomedical Sciences, Environmental and Respiratory Physiology, University of Padova, Via Marzolo 3, 35131 Padova, Italy;
| | - Cesare Tiengo
- Clinic of Plastic Reconstructive and Aesthetic Surgery, Padova University Hospital, 35128 Padova, Italy;
| | | | - Gerardo Bosco
- Department of Biomedical Sciences, Environmental and Respiratory Physiology, University of Padova, Via Marzolo 3, 35131 Padova, Italy;
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Preparation of a Biofunctionalized Surface on Titanium for Biomedical Applications: Surface Properties, Wettability Variations, and Biocompatibility Characteristics. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10041438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
This study developed a promising approach (low-temperature plasma polymerization with allylamine) to modify the titanium (Ti) surface, which helps the damaged tissue to heal faster. The Ti surface was first cleaned by argon (Ar) plasma, and then the functional amino-groups were coated on the Ti surface via plasma polymerization. The topography characteristics, wettability, and optimal plasma modification parameters were investigated through atomic force spectroscopy, secondary ion mass spectroscopy, and response surface methodology (RSM). Analytical results showed that the formation of a porous surface was found on the Ar plasma-modified Ti surfaces after Ar plasma modification with different parameters. The Ar plasma modification is an effective approach to remove surface contaminants and generate a porous topography on the Ti surface. As the Ti with Ar plasma modification was at 100 W and 190 m Torr for 12 min, the surface exhibited the maximum hydrophilic performance. In the allylamine plasma modifications, the contact angle values of the allylamine plasma-modified Ti surfaces varied between 70.15° and 88.26° in the designed parameters. The maximum concentration of amino-groups (31.58 nmole/cm2) can be obtained from the plasma-polymerized sample at 80 W and 150 mTorr for 22 min. Moreover, the cell response also demonstrated that the allylamine plasma-modified Ti sample with an optimal modification parameter (80 W, 22 min, and 150 mTorr) possessed great potential to increase cell adhesion ability. Thus, the optimal parameters of the low-temperature plasma polymerization with allylamine can be harvested using the RSM design. These data could provide new scientific information in the surface modification of Ti implant.
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Platelet Adhesion on Commercially Pure Titanium Plates in Vitro II. Immunofluorescence Visualization of PDGF-B, TGFβ1, and PPARγ Released from Activated Adherent Platelets. Dent J (Basel) 2019; 7:dj7040109. [PMID: 31752355 PMCID: PMC6960926 DOI: 10.3390/dj7040109] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/14/2019] [Accepted: 11/14/2019] [Indexed: 12/11/2022] Open
Abstract
Recent progress in the industrial development of dental implants has improved their surface bio-affinity, while clinical implantologists attempt to improve it through coating with various compounds, including platelet-rich plasma (PRP) in clinical settings. However, it is poorly understood how PRP acts on titanium surfaces. To validate this surface modification method and demonstrate how platelet-derived soluble biomolecules released from the activated adherent platelets act on plain, commercially pure-titanium (cp-Ti) plates, we evaluated the distribution of biomolecules by immunofluorescence. PPARγ, PDGF-B, and TGFβ1 were similarly released at immunofluorescence levels from activated adherent platelets, retained in the surrounding extra-platelet spaces for a while, and did not immediately diffuse away to distant spaces. Exogenously added CaCl2 augmented release and retention of those biomolecules along with activation and aggregation. Taken together with our previous data regarding platelet adhesion, these findings suggest that especially when treated with CaCl2, platelets immediately adhere on cp-Ti plates to release their stored biomolecules in the absence of plasma proteins and that these biomolecules do not diffuse away, but stay longer in extra-platelet spaces around the platelets by newly formed, immature fibrin fiber fragments. Consequently, these retained biomolecules are anticipated to cooperatively stabilize implants by stimulating alveolar bone regeneration and integration.
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Evaluation of Surface Characteristics and Hemocompatibility on the Oxygen Plasma-Modified Biomedical Titanium. METALS 2018. [DOI: 10.3390/met8070513] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Heller M, Kumar VV, Pabst A, Brieger J, Al-Nawas B, Kämmerer PW. Osseous response on linear and cyclic RGD-peptides immobilized on titanium surfaces in vitro and in vivo. J Biomed Mater Res A 2017; 106:419-427. [PMID: 28971567 DOI: 10.1002/jbm.a.36255] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 09/18/2017] [Accepted: 09/25/2017] [Indexed: 12/11/2022]
Abstract
Biomimetic surface modifications of titanium (Ti) implants using the Arg-Gly-Asp-sequence (RGD) are promising to accelerate bone healing in cases of medical implants. Therefore, we compared the impact of linear and cyclic RGD (l- and c-RGD) covalently coupled onto Ti surfaces on the osseous response in vitro and in vivo. In vitro, osteoblasts' behavior on different surfaces (unmodified, amino-silanized [APTES], l- and c-RGD) was analysed regarding adhesion (fluorescence microscopy), proliferation (resazurin stain) and differentiation (reverse transcription polymerase chain reaction on alkaline phosphatase and osteocalcin). In vivo, osteosynthesis screws (unmodified n = 8, l-RGD n = 8, c-RGD n = 8) were inserted into the proximal tibiae of 12 rabbits and evaluated for bone growth parameters (bone implant contact [%] and vertical bone apposition [VBA;%]) at 3 and 6 weeks. In vitro, c- as well as l-RGD surfaces stimulated osteoblasts' adherence, proliferation and differentiation in a similar manner, with only subtle evidence of superiority of the c-RGD modifications. In vivo, c-RGD-modifications led to a significantly increased VBA after 3 and 6 weeks. Thus, coating with c-RGD appears to play an important role influencing osteoblasts' behaviour in vitro but especially in vivo. These findings can be applied prospectively to implantable biomaterials with hypothetically improved survival and success rates. © 2017 Wiley Periodicals Inc. J Biomed Mater Res Part A: 106A: 419-427, 2018.
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Affiliation(s)
- M Heller
- Department of Otorhinolaryngology, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - V V Kumar
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Centre Rostock, Schillingallee 35, 18057, Rostock, Germany
| | - A Pabst
- Department of Oral, Maxillofacial and Plastic Surgery, Federal Armed Forces Hospital Koblenz, Germany
| | - J Brieger
- Department of Otorhinolaryngology, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - B Al-Nawas
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Centre Halle (Saale), Germany
| | - P W Kämmerer
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Centre Rostock, Schillingallee 35, 18057, Rostock, Germany
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Guided Bone Regeneration Using Collagen Scaffolds, Growth Factors, and Periodontal Ligament Stem Cells for Treatment of Peri-Implant Bone Defects In Vivo. Stem Cells Int 2017; 2017:3548435. [PMID: 28951742 PMCID: PMC5603746 DOI: 10.1155/2017/3548435] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 06/29/2017] [Accepted: 07/18/2017] [Indexed: 12/31/2022] Open
Abstract
Introduction The aim of the study was an evaluation of different approaches for guided bone regeneration (GBR) of peri-implant defects in an in vivo animal model. Materials and Methods In minipigs (n = 15), peri-implant defects around calcium phosphate- (CaP-; n = 46) coated implants were created and randomly filled with (1) blank, (2) collagen/hydroxylapatite/β-tricalcium phosphate scaffold (CHT), (3) CHT + growth factor cocktail (GFC), (4) jellyfish collagen matrix, (5) jellyfish collagen matrix + GFC, (6) collagen powder, and (7) collagen powder + periodontal ligament stem cells (PDLSC). Additional collagen membranes were used for coverage of the defects. After 120 days of healing, bone growth was evaluated histologically (bone to implant contact (BIC;%)), vertical bone apposition (VBA; mm), and new bone height (NBH; %). Results In all groups, new bone formation was seen. Though, when compared to the blank group, no significant differences were detected for all parameters. BIC and NBH in the group with collagen matrix as well as the group with the collagen matrix + GFC were significantly less when compared to the collagen powder group (all: p < 0.003). Conclusion GBR procedures, in combination with CaP-coated implants, will lead to an enhancement of peri-implant bone growth. There was no additional significant enhancement of osseous regeneration when using GFC or PDLSC.
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