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Shanbhag S, Kampleitner C, Sanz-Esporrin J, Lie SA, Gruber R, Mustafa K, Sanz M. Regeneration of alveolar bone defects in the experimental pig model: A systematic review and meta-analysis. Clin Oral Implants Res 2024; 35:467-486. [PMID: 38450852 DOI: 10.1111/clr.14253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/16/2024] [Accepted: 02/20/2024] [Indexed: 03/08/2024]
Abstract
OBJECTIVE Pigs are emerging as a preferred experimental in vivo model for bone regeneration. The study objective was to answer the focused PEO question: in the pig model (P), what is the capacity of experimental alveolar bone defects (E) for spontaneous regeneration in terms of new bone formation (O)? METHODS Following PRISMA guidelines, electronic databases were searched for studies reporting experimental bone defects or extraction socket healing in the maxillae or mandibles of pigs. The main inclusion criteria were the presence of a control group of untreated defects/sockets and the assessment of regeneration via 3D tomography [radiographic defect fill (RDF)] or 2D histomorphometry [new bone formation (NBF)]. Random effects meta-analyses were performed for the outcomes RDF and NBF. RESULTS Overall, 45 studies were included reporting on alveolar bone defects or extraction sockets, most frequently in the mandibles of minipigs. Based on morphology, defects were broadly classified as 'box-defects' (BD) or 'cylinder-defects' (CD) with a wide range of healing times (10 days to 52 weeks). Meta-analyses revealed pooled estimates (with 95% confidence intervals) of 50% RDF (36.87%-63.15%) and 43.74% NBF (30.47%-57%) in BD, and 44% RDF (16.48%-71.61%) and 39.67% NBF (31.53%-47.81%) in CD, which were similar to estimates of socket-healing [48.74% RDF (40.35%-57.13%) and 38.73% NBF (28.57%-48.89%)]. Heterogeneity in the meta-analysis was high (I2 > 90%). CONCLUSION A substantial body of literature revealed a high capacity for spontaneous regeneration in experimental alveolar bone defects of (mini)pigs, which should be considered in future studies of bone regeneration in this animal model.
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Affiliation(s)
- Siddharth Shanbhag
- Department of Immunology and Transfusion Medicine, Haukeland University Hospital, Bergen, Norway
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Carina Kampleitner
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, The Research Center in Cooperation with AUVA, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Javier Sanz-Esporrin
- ETEP Research Group, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
| | - Stein-Atle Lie
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Reinhard Gruber
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Kamal Mustafa
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Mariano Sanz
- ETEP Research Group, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
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Duong LT, Petit S, Kerner S, Clerc MM, Arnoult C, Nowwarote N, Osathanon T, Fournier BPJ, Isaac J, Ferré FC. Role of periosteum during healing of alveolar critical size bone defects in the mandible: a pilot study. Clin Oral Investig 2023; 27:4541-4552. [PMID: 37261496 DOI: 10.1007/s00784-023-05079-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 05/19/2023] [Indexed: 06/02/2023]
Abstract
OBJECTIVES Minipigs present advantages for studying oral bone regeneration; however, standardized critical size defects (CSD) for alveolar bone have not been validated yet. The objectives of this study are to develop a CSD in the mandibular alveolar bone in Aachen minipigs and to further investigate the specific role of periosteum. MATERIALS AND METHODS Three female Aachen minipigs aged 17, 24, and 84 months were used. For each minipig, a split-mouth design was performed: an osteotomy (2 cm height × 2.5 cm length) was performed; the periosteum was preserved on the left side and removed on the right side. Macroscopic, cone beam computed tomography (CBCT), microcomputed tomography (µCT), and histological analyses were performed to evaluate the bone defects and bone healing. RESULTS In both groups, spontaneous healing was insufficient to restore initial bone volume. The macroscopic pictures and the CBCT results showed a larger bone defect without periosteum. µCT results revealed that BMD, BV/TV, and Tb.Th were significantly lower without periosteum. The histological analyses showed (i) an increased osteoid apposition in the crestal area when periosteum was removed and (ii) an ossification process in the mandibular canal area in response to the surgical that seemed to increase when periosteum was removed. CONCLUSIONS A robust model of CSD model was developed in the alveolar bone of minipigs that mimics human mandibular bone defects. This model allows to further investigate the bone healing process and potential factors impacting healing such as periosteum. CLINICAL RELEVANCE This model may be relevant for testing different bone reconstruction strategies for preclinical investigations.
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Affiliation(s)
- Lucas T Duong
- Centre de Recherche Des Cordeliers, UMRS 1138, Molecular Oral Pathophysiology, Université Paris Cité, INSERM, Sorbonne Université, Paris, France
- Department of Oral Surgery, Dental Faculty, Université Paris Cité, Paris, France
- Oral Surgery Department, Charles Foix Hospital, AP-HP, Ivry-Sur-Seine, France
- Department of Head and Neck Surgical Oncology, Institut Gustave Roussy, Villejuif, France
| | - Stéphane Petit
- Centre de Recherche Des Cordeliers, UMRS 1138, Molecular Oral Pathophysiology, Université Paris Cité, INSERM, Sorbonne Université, Paris, France
- Department of Oral Biology, Dental Faculty, Université Paris Cité, Paris, France
| | - Stéphane Kerner
- Centre de Recherche Des Cordeliers, UMRS 1138, Molecular Oral Pathophysiology, Université Paris Cité, INSERM, Sorbonne Université, Paris, France
- Department of Oral Biology, Dental Faculty, Université Paris Cité, Paris, France
- Department of Periodontology, Dental Faculty, Université Paris Cité, Paris, France
- Department of Periodontics, Loma Linda University School of Dentistry, Loma Linda, CA, USA
| | - Mélodie M Clerc
- Centre de Recherche Des Cordeliers, UMRS 1138, Molecular Oral Pathophysiology, Université Paris Cité, INSERM, Sorbonne Université, Paris, France
- Department of Periodontology, Dental Faculty, Université Paris Cité, Paris, France
| | | | - Nunthawan Nowwarote
- Centre de Recherche Des Cordeliers, UMRS 1138, Molecular Oral Pathophysiology, Université Paris Cité, INSERM, Sorbonne Université, Paris, France
- Department of Oral Biology, Dental Faculty, Université Paris Cité, Paris, France
| | - Thanaphum Osathanon
- Dental Stem Cell Biology Research Unit, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
- Center of Excellence for Regenerative Dentistry and Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, 34 Henri Dunant Rd. Pathumwan, Bangkok, 10330, Thailand
| | - Benjamin P J Fournier
- Centre de Recherche Des Cordeliers, UMRS 1138, Molecular Oral Pathophysiology, Université Paris Cité, INSERM, Sorbonne Université, Paris, France
- Department of Oral Biology, Dental Faculty, Université Paris Cité, Paris, France
- Reference Center for Oral and Dental Rare Diseases, ORARES, Odontology Department, Rothschild Hospital, APHP, Paris, France
| | - Juliane Isaac
- Centre de Recherche Des Cordeliers, UMRS 1138, Molecular Oral Pathophysiology, Université Paris Cité, INSERM, Sorbonne Université, Paris, France
- Department of Oral Biology, Dental Faculty, Université Paris Cité, Paris, France
| | - François C Ferré
- Centre de Recherche Des Cordeliers, UMRS 1138, Molecular Oral Pathophysiology, Université Paris Cité, INSERM, Sorbonne Université, Paris, France.
- Department of Oral Surgery, Dental Faculty, Université Paris Cité, Paris, France.
- Department of Oral Biology, Dental Faculty, Université Paris Cité, Paris, France.
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El-Gindy S, Obeid MF, Elbatouty KM, Elshaboury E, Hassanien E. Cell therapy: A potential solution for the healing of bone cavities. Heliyon 2021; 7:e05885. [PMID: 33474509 PMCID: PMC7803654 DOI: 10.1016/j.heliyon.2020.e05885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 12/13/2020] [Accepted: 12/24/2020] [Indexed: 11/04/2022] Open
Abstract
Aim To Explore whether the use of autologous BMMNCs as a cell therapy technique will improve the healing of bone cavities in vivo. Methodology After achieving proper anesthesia, mononuclear cells were isolated from iliac crest's bone marrow aspirates (BMMNCs). Then access cavity, root canal preparation, and filling were done in third and fourth premolars, followed by amalgam coronal restoration. After that, a flap was reflected and a standardized bone cavity was drilled, the related root-ends were resected and retrocavity was drilled and filled with MTA. Before repositioning the flap, the bone cavity was filled with the desired filling material according to its corresponding group (n = 8): CollaCote group; where collagen scaffold was used, MNC group; in which CollaCote® loaded with isolated BMMNCs were applied, Biogen group; in which BIO-GEN® graft material was applied and finally Control group; where the bone cavities were left empty to heal spontaneously. Evaluations of healing of the bone cavities were done radiographically and histologically. Results The MNC group induced the best healing potential with statistical significant difference from other groups. Conclusion cell therapy utilizing autologous BMMNCs looks to beat the conventional therapies and convey a significant improvement in the healing of the bone cavity in vivo.
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Affiliation(s)
- Sara El-Gindy
- Department of Endodontic, Faculty of Dentistry, Egyptian Russian University Cairo, Egypt
| | - Maram Farouk Obeid
- Department of Endodontic, Faculty of Dentistry, Ain Shams University Cairo, Organization of African Unity St, El-Qobba Bridge, Al Waili, Cairo Governorate, Egypt
| | - Kareim Mostafa Elbatouty
- Department of Endodontic, Faculty of Dentistry, Ain Shams University Cairo, Organization of African Unity St, El-Qobba Bridge, Al Waili, Cairo Governorate, Egypt
| | - Elham Elshaboury
- Department of Endodontic, Faculty of Dentistry, Modern Science and Arts - MSA, Egypt
| | - Ehab Hassanien
- Department of Endodontic, Faculty of Dentistry, Ain Shams University Cairo, Organization of African Unity St, El-Qobba Bridge, Al Waili, Cairo Governorate, Egypt
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Sarkarat F, Vahdati SA, Mahaseni aghdam HR, Nematallahi Z, Farahmand M. Bone Repair via Osteon and Bio-Oss: A Comparative Histological and Histomorphometric Animal Study. JOURNAL OF RESEARCH IN DENTAL AND MAXILLOFACIAL SCIENCES 2020. [DOI: 10.29252/jrdms.5.2.26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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Probst FA, Fliefel R, Burian E, Probst M, Eddicks M, Cornelsen M, Riedl C, Seitz H, Aszódi A, Schieker M, Otto S. Bone regeneration of minipig mandibular defect by adipose derived mesenchymal stem cells seeded tri-calcium phosphate- poly(D,L-lactide-co-glycolide) scaffolds. Sci Rep 2020; 10:2062. [PMID: 32029875 PMCID: PMC7005305 DOI: 10.1038/s41598-020-59038-8] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 01/21/2020] [Indexed: 12/29/2022] Open
Abstract
Reconstruction of bone defects represents a serious issue for orthopaedic and maxillofacial surgeons, especially in extensive bone loss. Adipose-derived mesenchymal stem cells (ADSCs) with tri-calcium phosphates (TCP) are widely used for bone regeneration facilitating the formation of bone extracellular matrix to promote reparative osteogenesis. The present study assessed the potential of cell-scaffold constructs for the regeneration of extensive mandibular bone defects in a minipig model. Sixteen skeletally mature miniature pigs were divided into two groups: Control group and scaffolds seeded with osteogenic differentiated pADSCs (n = 8/group). TCP-PLGA scaffolds with or without cells were integrated in the mandibular critical size defects and fixed by titanium osteosynthesis plates. After 12 weeks, ADSCs seeded scaffolds (n = 7) demonstrated significantly higher bone volume (34.8% ± 4.80%) than scaffolds implanted without cells (n = 6, 22.4% ± 9.85%) in the micro-CT (p < 0.05). Moreover, an increased amount of osteocalcin deposition was found in the test group in comparison to the control group (27.98 ± 2.81% vs 17.10 ± 3.57%, p < 0.001). In conclusion, ADSCs seeding on ceramic/polymer scaffolds improves bone regeneration in large mandibular defects. However, further improvement with regard to the osteogenic capacity is necessary to transfer this concept into clinical use.
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Affiliation(s)
- Florian Andreas Probst
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery, University Hospital, Ludwig-Maximilians-University, Munich, 80337, Germany.,Laboratory of Experimental Surgery and Regenerative Medicine (ExperiMed), Clinic for General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University, Munich, 80336, Germany
| | - Riham Fliefel
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery, University Hospital, Ludwig-Maximilians-University, Munich, 80337, Germany. .,Laboratory of Experimental Surgery and Regenerative Medicine (ExperiMed), Clinic for General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University, Munich, 80336, Germany. .,Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University, Alexandria, 21514, Egypt.
| | - Egon Burian
- Laboratory of Experimental Surgery and Regenerative Medicine (ExperiMed), Clinic for General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University, Munich, 80336, Germany.,Department of Neuroradiology, Klinikum rechts der Isar, Technical University Munich, Munich, 81675, Germany
| | - Monika Probst
- Department of Neuroradiology, Klinikum rechts der Isar, Technical University Munich, Munich, 81675, Germany
| | - Matthias Eddicks
- Clinic for Swine, Center for Clinical Veterinary Medicine, Ludwig-Maximilians-University, Oberschleissheim, 85764, Germany
| | - Matthias Cornelsen
- Fluid Technology and Microfluidics, University of Rostock, Rostock, 18059, Germany
| | - Christina Riedl
- Laboratory of Experimental Surgery and Regenerative Medicine (ExperiMed), Clinic for General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University, Munich, 80336, Germany
| | - Hermann Seitz
- Fluid Technology and Microfluidics, University of Rostock, Rostock, 18059, Germany
| | - Attila Aszódi
- Laboratory of Experimental Surgery and Regenerative Medicine (ExperiMed), Clinic for General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University, Munich, 80336, Germany
| | - Matthias Schieker
- Laboratory of Experimental Surgery and Regenerative Medicine (ExperiMed), Clinic for General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University, Munich, 80336, Germany
| | - Sven Otto
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery, University Hospital, Ludwig-Maximilians-University, Munich, 80337, Germany.,Laboratory of Experimental Surgery and Regenerative Medicine (ExperiMed), Clinic for General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University, Munich, 80336, Germany
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Kharkova N, Reshetov I, Zelianin A, Philippov V, Sergeeva N, Sviridova I, Komlev V, Andreeva U, Kuznecova O. Three-dimensional TCP scaffolds enriched with Erythropoietin for stimulation of vascularization and bone formation. ELECTRONIC JOURNAL OF GENERAL MEDICINE 2019. [DOI: 10.29333/ejgm/108620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Regeneration of Cystic Bone Cavities and Bone Defects With Bioactive Glass S53P4 in the Upper and Lower Jaws. J Craniofac Surg 2017; 28:1197-1205. [PMID: 28538076 DOI: 10.1097/scs.0000000000003649] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Cysts and tumors are common lesions in the jaws. To be able to retain a good volume of the alveolar ridge during healing as well as strengthening the angle and body of the mandible and provide an instant improved support for adjacent teeth, reliable long-term bone regeneration is needed. The purpose of this prospective study was to promote bone regeneration by filling bony defects in the upper or lower jaw with granules of the bioactive glass S53P4 (BAG), which have osteostimulative and antimicrobial properties.The authors treated 20 patients (21 defects) surgically; benign tumors, cysts, or infection related to impacted teeth in the maxilla or mandible. The tumor or cyst was removed or enucleated and thorough cleaning of the infected area was performed. The bone cavity was filled with granules of the BAG S53P4 despite signs of chronic infection in the area at the time of surgery. The patients were followed up for an average of 34 months clinically and with cone beam computerized tomography for 28 months. In 20 defects the final outcome was successful. Despite infection at the time of surgery in 65% of the patients, no material associated infection was seen during the follow-up. The BAG S53P4 granules were radiologically remodeled into bone after 2 years follow-up. The use of granules of the BAG S53P4 in the treatment of large bone defects provides infection-free reliable bone regeneration despite chronic infection at the time of surgery, which improves the prognosis of adjacent teeth.
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Martínez C, Fernández C, Prado M, Ozols A, Olmedo DG. Synthesis and characterization of a novel scaffold for bone tissue engineering based on Wharton's jelly. J Biomed Mater Res A 2017; 105:1034-1045. [DOI: 10.1002/jbm.a.35976] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 11/10/2016] [Accepted: 12/06/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Cristian Martínez
- Department of Oral Pathology, Group of Biomaterials for Prostheses, Institute of Biomedical Engineering, Engineering School, Buenos Aires University; Av. Paseo Colón 850 (C1063ACV) Argentina
- Laboratory for the Study of Biomaterials, Department of Oral Pathology, School of Dentistry; University of Buenos Aires; MT de Alvear 2142, 2° “A”, (C1122AAH) Argentina
- Biomaterials Group, School of Dentistry; National University of Cuyo; Mendoza, General San Martin Park (M5502JMA) Argentina
| | - Carlos Fernández
- Department of Oral Pathology, Group of Biomaterials for Prostheses, Institute of Biomedical Engineering, Engineering School, Buenos Aires University; Av. Paseo Colón 850 (C1063ACV) Argentina
| | - Miguel Prado
- Nuclear Materials Group, Bariloche Atomic Center (GMN-CAB), National Atomic Energy Commission; Av. E. Bustillo 9500, San Carlos de Bariloche, (R8402AGP) Argentina
| | - Andres Ozols
- Department of Oral Pathology, Group of Biomaterials for Prostheses, Institute of Biomedical Engineering, Engineering School, Buenos Aires University; Av. Paseo Colón 850 (C1063ACV) Argentina
| | - Daniel G. Olmedo
- Laboratory for the Study of Biomaterials, Department of Oral Pathology, School of Dentistry; University of Buenos Aires; MT de Alvear 2142, 2° “A”, (C1122AAH) Argentina
- National Research Council (CONICET); Buenos Aires (C1122AAH) Argentina
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Barbeck M, Unger RE, Booms P, Dohle E, Sader RA, Kirkpatrick CJ, Ghanaati S. Monocyte preseeding leads to an increased implant bed vascularization of biphasic calcium phosphate bone substitutes via vessel maturation. J Biomed Mater Res A 2016; 104:2928-2935. [PMID: 27419378 DOI: 10.1002/jbm.a.35834] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 05/25/2016] [Accepted: 07/14/2016] [Indexed: 11/08/2022]
Abstract
The present study analyzes the influence of the addition of monocytes to a biphasic bone substitute with two granule sizes (400-700 μm and 500-1000 μm). The majority of the added monocytes was detectable as mononuclear cells, while also low amounts of (chimeric) multinucleated giant cells (MNGCs) were found. No increase in the total number of MNGCs was established, but a significantly increased percent vascularization. Altogether, the results show that the added monocytes become involved in the tissue response to a biomaterial without marked changes in the overall reaction. Monocyte addition enables an increased implant bed vascularization especially via induction of vessel maturation and, thus intervenes positively in the healing reaction to a biomaterial. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 2928-2935, 2016.
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Affiliation(s)
- M Barbeck
- Frankfurt Orofacial Regenerative Medicine (FORM) Lab, Department of Oral, Cranio-Maxillofacial and Facial Plastic Surgery, Medical Center of the Goethe University Frankfurt, Frankfurt, Germany.
| | - R E Unger
- Institute of Pathology, Repair-Lab, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - P Booms
- Frankfurt Orofacial Regenerative Medicine (FORM) Lab, Department of Oral, Cranio-Maxillofacial and Facial Plastic Surgery, Medical Center of the Goethe University Frankfurt, Frankfurt, Germany
| | - E Dohle
- Frankfurt Orofacial Regenerative Medicine (FORM) Lab, Department of Oral, Cranio-Maxillofacial and Facial Plastic Surgery, Medical Center of the Goethe University Frankfurt, Frankfurt, Germany
| | - R A Sader
- Frankfurt Orofacial Regenerative Medicine (FORM) Lab, Department of Oral, Cranio-Maxillofacial and Facial Plastic Surgery, Medical Center of the Goethe University Frankfurt, Frankfurt, Germany
| | - C J Kirkpatrick
- Frankfurt Orofacial Regenerative Medicine (FORM) Lab, Department of Oral, Cranio-Maxillofacial and Facial Plastic Surgery, Medical Center of the Goethe University Frankfurt, Frankfurt, Germany
| | - S Ghanaati
- Frankfurt Orofacial Regenerative Medicine (FORM) Lab, Department of Oral, Cranio-Maxillofacial and Facial Plastic Surgery, Medical Center of the Goethe University Frankfurt, Frankfurt, Germany
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A novel animal model treated with tooth extraction to repair the full-thickness defects in the mandible of rabbits. J Surg Res 2015; 194:706-716. [DOI: 10.1016/j.jss.2014.11.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 10/29/2014] [Accepted: 11/07/2014] [Indexed: 11/22/2022]
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Tissue-engineered bone with 3-dimensionally printed β-tricalcium phosphate and polycaprolactone scaffolds and early implantation: an in vivo pilot study in a porcine mandible model. J Oral Maxillofac Surg 2015; 73:1016.e1-1016.e11. [PMID: 25883004 DOI: 10.1016/j.joms.2015.01.021] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 01/25/2015] [Accepted: 01/26/2015] [Indexed: 11/22/2022]
Abstract
PURPOSE Deep bone penetration into implanted scaffolds remains a challenge in tissue engineering. The purpose of this study was to evaluate bone penetration depth within 3-dimensionally (3D) printed β-tricalcium phosphate (β-TCP) and polycaprolactone (PCL) scaffolds, seeded with porcine bone marrow progenitor cells (pBMPCs), and implanted early in vivo. MATERIALS AND METHODS Scaffolds were 3D printed with 50% β-TCP and 50% PCL. The pBMPCs were harvested, isolated, expanded, and differentiated into osteoblasts. Cells were seeded into the scaffolds and constructs were incubated in a rotational oxygen-permeable bioreactor system for 14 days. Six 2- × 2-cm defects were created in each mandible (N = 2 minipigs). In total, 6 constructs were placed within defects and 6 defects were used as controls (unseeded scaffolds, n = 3; empty defects, n = 3). Eight weeks after surgery, specimens were harvested and analyzed by hematoxylin and eosin (H&E), 4',6-diamidino-2-phenylindole (DAPI), and CD31 staining. Analysis included cell counts, bone penetration, and angiogenesis at the center of the specimens. RESULTS All specimens (N = 12) showed bone formation similar to native bone at the periphery. Of 6 constructs, 4 exhibited bone formation in the center. Histomorphometric analysis of the H&E-stained sections showed an average of 22.1% of bone in the center of the constructs group compared with 1.87% in the unseeded scaffolds (P < .05). The 2 remaining constructs, which did not display areas of mature bone in the center, showed massive cell penetration depth by DAPI staining, with an average of 2,109 cells/0.57 mm(2) in the center compared with 1,114 cells/0.57 mm(2) in the controls (P < .05). CD31 expression was greater in the center of the constructs compared with the unseeded scaffolds (P < .05). CONCLUSION 3D printed β-TCP and PCL scaffolds seeded with pBMPCs and implanted early into porcine mandibular defects display good bone penetration depth. Further study with a larger sample and larger bone defects should be performed before human applications.
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Niada S, Ferreira LM, Arrigoni E, Addis A, Campagnol M, Broccaioli E, Brini AT. Porcine adipose-derived stem cells from buccal fat pad and subcutaneous adipose tissue for future preclinical studies in oral surgery. Stem Cell Res Ther 2014; 4:148. [PMID: 24330736 PMCID: PMC4054958 DOI: 10.1186/scrt359] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 10/07/2013] [Accepted: 11/26/2013] [Indexed: 01/13/2023] Open
Abstract
Introduction Adipose-derived stem cells (ASCs) are progenitor cells used in bone tissue engineering and regenerative medicine. Despite subcutaneous adipose tissue being more abundant, the buccal fat pad (BFP) is easily accessible for dentists and maxillofacial surgeons. For this reason, considering the need for preclinical study and the swine as an optimal animal model in tissue engineering applications, we compared the features of porcine ASCs (pASCs) from both tissue-harvesting sites. Methods ASCs were isolated from interscapular subcutaneous adipose tissue (ScI) and buccal fat pads of six swine. Cells were characterized for their stemness and multipotent features. Moreover, their osteogenic ability when cultured on titanium disks and silicon carbide-plasma-enhanced chemical vapor-deposition fragments, and their growth in the presence of autologous and heterologous serum were also assessed. Results Independent of the harvesting site, no differences in proliferation, viability, and clonogenicity were observed among all the pASC populations. Furthermore, when induced toward osteogenic differentiation, both ScI- and BFP-pASCs showed an increase of collagen and calcified extracellular matrix (ECM) production, alkaline phosphatase activity, and osteonectin expression, indicating their ability to differentiate toward osteoblast-like cells. In addition, they differentiated toward adipocyte-like cells, and chondrogenic induced pASCs were able to increase glycosaminoglycans (GAGs) production over time. When cells were osteoinduced on synthetic biomaterials, they significantly increased the amount of calcified ECM compared with control cells; moreover, titanium showed the osteoinductive effect on pASCs, also without chemical stimuli. Finally, these cells grew nicely in 10% FBS, and no benefits were produced by substitution with swine serum. Conclusions Swine buccal fat pad contains progenitor cells with mesenchymal features, and they also osteo-differentiate nicely in association with synthetic supports. We suggest that porcine BFP-ASCs may be applied in preclinical studies of periodontal and bone-defect regeneration.
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Thoma DS, Kruse A, Ghayor C, Jung RE, Weber FE. Bone augmentation using a synthetic hydroxyapatite/silica oxide-based and a xenogenic hydroxyapatite-based bone substitute materials with and without recombinant human bone morphogenetic protein-2. Clin Oral Implants Res 2014; 26:592-8. [PMID: 25138542 DOI: 10.1111/clr.12469] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/03/2014] [Indexed: 12/01/2022]
Abstract
AIM To test whether or not bone regeneration using deproteinized bovine bone mineral (DBBM) is comparable to hydroxyapatite/silica oxide (HA/SiO) and to test the effect of recombinant human bone morphogenetic protein-2 (rhBMP-2) as an adjunct to DBBM for localized bone regeneration. MATERIALS AND METHODS In each of the 10 rabbits, 4 titanium cylinders were placed on the external cortical plates of their calvaria. Four treatment modalities were randomly allocated: (i) empty, (ii) HA/SiO, (iii) DBBM, and (iv) DBBM plus rhBMP-2 (DBBM/BMP). The animals were sacrificed at week 8. Descriptive histology and histomorphometric assessment using a superimposed test grid of points and cycloids were performed. RESULTS The mean number of points of the test grid coinciding with bone within the cylinder reached 124 ± 35 bone points for empty controls, 92 ± 40 bone points for DBBM, 98 ± 44 bone points for synthetic HA/SiO, and 146 ± 34 bone points DBBM/BMP. The P-value for DBBM with and without BMP reached a borderline statistical significance of 0.051. However, the area of bone regeneration within the cylinders peaked for DBBM/BMP and was statistically significantly higher compared with empty cylinders (P < 0.05). The bone-to-bone substitute contact ranged between 32.9% ± 21.7 for DBBM, 39.6 ± 18.4% for HA/SiO, and 57.8% ± 10.2 for DBBM/BMP. The differences between DBBM/BMP and controls (DBBM, HA/SiO) were statistically significant (P < 0.05). CONCLUSIONS DBBM and HA/SiO rendered comparable amounts of bone regeneration. The addition of rhBMP-2 to DBBM resulted in more favorable outcomes with respect to the area of bone regeneration and to bone-to-implant contact, thereby indicating the potential of this growth factor to enhance bone regeneration within this animal model.
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Affiliation(s)
- D S Thoma
- Department of Fixed and Removable Prothodontics and Dental Material Science, Dental School, University of Zurich, Zurich, Switzerland
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Wittenburg G, Flade V, Garbe AI, Lauer G, Labudde D. Scaffold preferences of mesenchymal stromal cells and adipose-derived stem cells from green fluorescent protein transgenic mice influence the tissue engineering of bone. Br J Oral Maxillofac Surg 2014; 52:409-14. [DOI: 10.1016/j.bjoms.2014.02.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 02/26/2014] [Indexed: 10/25/2022]
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Establishing a critical-size mandibular defect model in growing pigs: characterization of spontaneous healing. J Oral Maxillofac Surg 2014; 72:1852-68. [PMID: 24815793 DOI: 10.1016/j.joms.2014.02.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 01/23/2014] [Accepted: 02/13/2014] [Indexed: 12/20/2022]
Abstract
PURPOSE A large animal model is desired for preclinical studies aimed at reconstructing severe mandibular skeletal defects using tissue engineering techniques. To identify the size and location requirements for a mandibular critical-size bone defect in growing pigs, the present study investigated the spontaneous healing of surgically created mandibular defects. MATERIALS AND METHODS Six 4-month-old domestic pigs were used. In pigs 1 and 2, a 3-, 5-, or 7-cm(3) subperiosteal mandibular defect was created. In pigs 3 to 6, 3- to 5-cm(3) bilateral defects were randomly created at the anterior (apical to the molars) and posterior (mandibular angle) mandibular regions. Spontaneous healing of these defects was assessed by serial computed tomography scans (postoperative week 1, 6, and 12) and histologic analyses. RESULTS In pigs 1 and 2, regardless of defect size, the anterior, but not posterior, defects had largely healed. Systematic analyses of pigs 3 to 6 revealed, first, the extent of defect regeneration from spontaneous healing was significantly less in the posterior than in the anterior defects, with about two thirds and one third of the original defect volume remaining, respectively. Second, histologically, the posterior defects had considerably less regeneration and more evident tapering of the new bone than did the anterior defects. Finally, the buccal periosteum had completely regenerated in the anterior defects, but had only partially done so in the posterior defects. Also, the buccal surface contour was moderately concave in the anterior defects, but it was severely concave in the posterior defects. CONCLUSIONS Despite robust spontaneous healing of mandibular defects in growing pigs, 5-cm(3) defects in the mandibular angle region without buccal periosteum would be a reasonable critical-size defect model relevant to mandibular defects in adolescent humans.
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Alfotawei R, Naudi KB, Lappin D, Barbenel J, Di Silvio L, Hunter K, McMahon J, Ayoub A. The use of TriCalcium Phosphate (TCP) and stem cells for the regeneration of osteoperiosteal critical-size mandibular bony defects, an in vitro and preclinical study. J Craniomaxillofac Surg 2014; 42:863-9. [PMID: 24485270 DOI: 10.1016/j.jcms.2013.12.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 10/02/2013] [Accepted: 12/27/2013] [Indexed: 10/25/2022] Open
Abstract
The investigation aims to assess the reconstruction of critical-size mandibular bone defects in rabbits using beta-Tricalcium Phosphate (β-TCP) scaffolding loaded with stem cells. A 20 mm-long mandibular osteoperiosteal continuity defect was created in 8 New Zealand rabbits and filled with β-TCP scaffolding. In 6 cases bone marrow stem cells (BMSCs) harvested, and enriched, from the posterior iliac crest of the same rabbit were seeded into the scaffolding, while a scaffold was used alone in two cases chosen at random. Radiographic analysis was carried out immediately following surgery and 4, 8 and 12 weeks postoperatively. Cone Beam CT (CBCT) scanning, biomechanical testing and histology assessments were carried out on the explanted mandibles three months postoperatively. The radiography showed minimal new bone formation in all the cases, with significant amounts of undegraded scaffold material visible. Sporadic areas of bone formation were seen, these did not bridge the gap of the created surgical defect. The mechanical properties of the regenerated bone were of an inferior quality when compared with that of the contralateral non-operated side. The addition of BMSCs to the biodegradable β-TCP scaffold did not improve reconstruction of the created mandibular defect. Despite successful aspiration and culture of BMSCs, the survival of these cells in vivo was questionable.
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Affiliation(s)
- Randa Alfotawei
- Biotechnology and Craniofacial Sciences (BACS) Research Group, Glasgow Dental School, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
| | - Kurt Busuttil Naudi
- Biotechnology and Craniofacial Sciences (BACS) Research Group, Glasgow Dental School, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom.
| | - David Lappin
- Biotechnology and Craniofacial Sciences (BACS) Research Group, Glasgow Dental School, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
| | - Joseph Barbenel
- Biotechnology and Craniofacial Sciences (BACS) Research Group, Glasgow Dental School, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
| | - Lucy Di Silvio
- Biotechnology and Craniofacial Sciences (BACS) Research Group, Glasgow Dental School, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
| | - Keith Hunter
- Biotechnology and Craniofacial Sciences (BACS) Research Group, Glasgow Dental School, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
| | - Jeremy McMahon
- Biotechnology and Craniofacial Sciences (BACS) Research Group, Glasgow Dental School, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
| | - Ashraf Ayoub
- Biotechnology and Craniofacial Sciences (BACS) Research Group, Glasgow Dental School, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
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Mardas N, Dereka X, Donos N, Dard M. Experimental Model for Bone Regeneration in Oral and Cranio-Maxillo-Facial Surgery. J INVEST SURG 2013; 27:32-49. [DOI: 10.3109/08941939.2013.817628] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Arrigoni E, Niada S, Ferreira L, De Girolamo L, Brini A. Two Bone Substitutes Analyzedin Vitroby Porcine and Human Adipose-Derived Stromal Cells. Int J Immunopathol Pharmacol 2013; 26:51-9. [DOI: 10.1177/03946320130260s107] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- E. Arrigoni
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - S. Niada
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
- IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
| | - L.M. Ferreira
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | | | - A.T. Brini
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
- IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
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Nejadnik H, Henning TD, Do T, Sutton EJ, Baehner F, Horvai A, Sennino B, McDonald D, Meier R, Misselwitz B, Link TM, Daldrup-Link HE. MR imaging features of gadofluorine-labeled matrix-associated stem cell implants in cartilage defects. PLoS One 2012; 7:e49971. [PMID: 23251354 PMCID: PMC3520977 DOI: 10.1371/journal.pone.0049971] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Accepted: 10/19/2012] [Indexed: 11/19/2022] Open
Abstract
Objectives The purpose of our study was to assess the chondrogenic potential and the MR signal effects of GadofluorineM-Cy labeled matrix associated stem cell implants (MASI) in pig knee specimen. Materials and Methods Human mesenchymal stem cells (hMSCs) were labeled with the micelle-based contrast agent GadofluorineM-Cy. Ferucarbotran-labeled hMSCs, non-labeled hMSCs and scaffold only served as controls. Chondrogenic differentiation was induced and gene expression and histologic evaluation were performed. The proportions of spindle-shaped vs. round cells of chondrogenic pellets were compared between experimental groups using the Fisher's exact test. Labeled and unlabeled hMSCs and chondrocytes in scaffolds were implanted into cartilage defects of porcine femoral condyles and underwent MR imaging with T1- and T2-weighted SE and GE sequences. Contrast-to-noise ratios (CNR) between implants and adjacent cartilage were determined and analyzed for significant differences between different experimental groups using the Kruskal-Wallis test. Significance was assigned for p<0.017, considering a Bonferroni correction for multiple comparisons. Results Collagen type II gene expression levels were not significantly different between different groups (p>0.017). However, hMSC differentiation into chondrocytes was superior for unlabeled and GadofluorineM-Cy-labeled cells compared with Ferucarbotran-labeled cells, as evidenced by a significantly higher proportion of spindle cells in chondrogenic pellets (p<0.05). GadofluorineM-Cy-labeled hMSCs and chondrocytes showed a positive signal effect on T1-weighted images and a negative signal effect on T2-weighted images while Ferucarbotran-labeled cells provided a negative signal effect on all sequences. CNR data for both GadofluorineM-Cy-labeled and Ferucarbotran-labeled hMSCs were significantly different compared to unlabeled control cells on T1-weighted SE and T2*-weighted MR images (p<0.017). Conclusion hMSCs can be labeled by simple incubation with GadofluorineM-Cy. The labeled cells provide significant MR signal effects and less impaired chondrogenesis compared to Ferucarbotran-labeled hMSCs. Thus, GadoflurineM-Cy might represent an alternative MR cell marker to Ferucarbotran, which is not distributed any more in Europe or North America.
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Affiliation(s)
- Hossein Nejadnik
- Department of Radiology, Stanford University, Stanford, California, United States of America.
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Harms C, Helms K, Taschner T, Stratos I, Ignatius A, Gerber T, Lenz S, Rammelt S, Vollmar B, Mittlmeier T. Osteogenic capacity of nanocrystalline bone cement in a weight-bearing defect at the ovine tibial metaphysis. Int J Nanomedicine 2012; 7:2883-9. [PMID: 22745551 PMCID: PMC3384364 DOI: 10.2147/ijn.s29314] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The synthetic material Nanobone® (hydroxyapatite nanocrystallines embedded in a porous silica gel matrix) was examined in vivo using a standardized bone defect model in the ovine tibial metaphysis. A standardized 6 × 12 × 24-mm bone defect was created below the articular surface of the medial tibia condyles on both hind legs of 18 adult sheep. The defect on the right side was filled with Nanobone®, while the defect on the contralateral side was left empty. The tibial heads of six sheep were analyzed after 6, 12, and 26 weeks each. The histological and radiological analysis of the defect on the control side did not reveal any bone formation after the total of 26 weeks. In contrast, the microcomputed tomography analysis of the defect filled with Nanobone® showed a 55%, 72%, and 74% volume fraction of structures with bone density after 6, 12, and 26 weeks, respectively. Quantitative histomorphological analysis after 6, and 12 weeks revealed an osteoneogenesis of 22%, and 36%, respectively. Hematoxylin and eosin sections demonstrated multinucleated giant cells on the surface of the biomaterial and resorption lacunae, indicating osteoclastic resorptive activity. Nanobone® appears to be a highly potent bone substitute material with osteoconductive properties in a loaded large animal defect model, supporting the potential use of Nanobone® also in humans.
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Affiliation(s)
- Christoph Harms
- Department of Trauma and Reconstructive Surgery, University of Rostock, Rostock, Germany.
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Zheng Y, Wang XY, Wang YM, Liu XY, Zhang CM, Hou BX, Wang SL. Dentin regeneration using deciduous pulp stem/progenitor cells. J Dent Res 2012; 91:676-82. [PMID: 22660968 DOI: 10.1177/0022034512449834] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Reparative dentin formation is essential for maintaining the integrity of dentin structure during disease or trauma. In this study, we investigated stem/progenitor cell-based tissue engineering for dentin regeneration in a large animal model. Porcine deciduous pulp stem/progenitor cells (PDPSCs) were mixed with a beta-tricalcium phosphate (β-TCP) scaffold for dentin regeneration. Different concentrations of PDPSCs were tested to determine the optimal density for dentin regeneration. Aliquots of 5×10(5) PDPSCs in 1 mL resulted in the highest number of cells attached to the scaffold and the greatest alkaline phosphatase activity. We labeled PDPSCs with green fluorescent protein (GFP) and used the optimal cell numbers mixed with β-TCP to repair pulp chamber roof defects in the premolars of swine. Four weeks after transplantation, GFP-positive PDPSCs were observed in PDPSC-embedded scaffold constructs. At 16 weeks after transplantation, the PDPSCs mixed with β-TCP significantly regenerated the dentin-like structures and nearly completely restored the pulp chamber roof defects. This study demonstrated that the PDPSC/scaffold construct was useful in direct pulp-capping and provides pre-clinical evidence for stem/progenitor cell-based dentin regeneration.
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Affiliation(s)
- Y Zheng
- Department of Endodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing, China
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Graft Shrinkage and Survival Rate of Implants After Sinus Floor Elevation Using a Nanocrystalline Hydroxyapatite Embedded in Silica Gel Matrix. IMPLANT DENT 2012; 21:213-9. [DOI: 10.1097/id.0b013e31824ee743] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Busuttil Naudi K, Ayoub A, McMahon J, Di Silvio L, Lappin D, Hunter KD, Barbenel J. Mandibular reconstruction in the rabbit using beta-tricalcium phosphate (β-TCP) scaffolding and recombinant bone morphogenetic protein 7 (rhBMP-7) - histological, radiographic and mechanical evaluations. J Craniomaxillofac Surg 2012; 40:e461-9. [PMID: 22507295 DOI: 10.1016/j.jcms.2012.03.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Revised: 03/05/2012] [Accepted: 03/06/2012] [Indexed: 11/18/2022] Open
Abstract
This investigation assesses the histological, radiographic and mechanical properties of regenerated bone in a unilateral critical-size osteoperiosteal mandibular continuity defect in the rabbit model, following the application of beta-tricalcium phosphate (β-TCP) scaffolding and recombinant human bone morphogenetic protein 7 (rhBMP-7). The study was carried out on nine cases; in six cases the critical-size defect was filled with rhBMP-7 in the β-TCP scaffolding, and in three cases the β-TCP was used alone. The cases were sacrificed 3 months post-operatively. Histologically the overall mean of the percentage of regenerated bone volume in the cases that received rhBMP-7 was 29.41% ± 6.25%, which was considerably greater than the 6.35% ± 3.08% in the cases treated with β-TCP alone. Mechanical testing of the cases treated with rhBMP-7 gave failure moments (55 mNm-2.040 Nm) that were consistently greater than those treated with β-TCP alone (0 mNm-48 mNm). In some cases the mechanical properties of the regenerated bone were comparable to those of untreated bone. RhBMP-7 in prefabricated β-TCP scaffolding appeared, radiographically and histologically, to be an effective method for bone regeneration in mandibular critical-size defects in the rabbit model. This points towards possible future clinical applications.
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Affiliation(s)
- Kurt Busuttil Naudi
- Biotechnology & Craniofacial Sciences Research Group, Glasgow Dental Hospital, UK.
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A preliminary study in osteoinduction by a nano-crystalline hydroxyapatite in the mini pig. Folia Histochem Cytobiol 2011; 48:589-96. [PMID: 21478102 DOI: 10.2478/v10042-010-0096-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
To test the probable osteoinductive properties of NanoBone, a new highly non-sintered porous nano-crystalline hydroxylapatite bone substitute embedded into a silica gel matrix, granules were implanted subcutaneously and intramuscularly into the back region of 18 mini pigs. After periods of 5 and 10 weeks as well as 4 and 8 months, implantation sites were investigated using histological and histomorphometric procedures. Signs of early osteogenesis could already be detected after 5 weeks. The later periods were characterized by increasing membranous osteogenesis in and around the granules leading to the formation of bone-like structures showing periosteal and tendon-like structures with bone marrow and focal chondrogenesis. Bone formation was better in the subcutaneous than in the intramuscular implantation sites. This ectopic osteogenesis is discussed with regard to the nanoporosity and microporosity of the material, physico-chemical interactions at its surface, the differentiation of osteoblasts, the role of angiogenesis and the probable involvement of growth factors. The results of this preliminary study indicate that this biomaterial has osteoinductive potential and induces the formation of bone structures, mainly in subcutaneous adipose tissue in the pig.
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Kruse A, Jung RE, Nicholls F, Zwahlen RA, Hämmerle CHF, Weber FE. Bone regeneration in the presence of a synthetic hydroxyapatite/silica oxide-based and a xenogenic hydroxyapatite-based bone substitute material. Clin Oral Implants Res 2010; 22:506-11. [DOI: 10.1111/j.1600-0501.2010.02039.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yoshimoto R, Murata M, Akazawa T, Arisue M. Effects of Functionally Graded Hydroxyapatite for Large Mandibular Defects in Adult Rabbits. J HARD TISSUE BIOL 2010. [DOI: 10.2485/jhtb.19.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Canullo L, Dellavia C. Sinus Lift Using a Nanocrystalline Hydroxyapatite Silica Gel in Severely Resorbed Maxillae: Histological Preliminary Study. Clin Implant Dent Relat Res 2009; 11 Suppl 1:e7-13. [DOI: 10.1111/j.1708-8208.2008.00141.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Zheng Y, Liu Y, Zhang CM, Zhang HY, Li WH, Shi S, Le AD, Wang SL. Stem cells from deciduous tooth repair mandibular defect in swine. J Dent Res 2009; 88:249-54. [PMID: 19329459 DOI: 10.1177/0022034509333804] [Citation(s) in RCA: 146] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Stem cells from human exfoliated deciduous teeth have been identified as a new post-natal stem cell population with multipotential differentiation capabilities, including regeneration of mineralized tissues in vivo. To examine the efficacy of utilizing these stem cells in regenerating orofacial bone defects, we isolated stem cells from miniature pig deciduous teeth and engrafted the critical-size bone defects generated in swine mandible models. Our results indicated that stem cells from miniature pig deciduous teeth, an autologous and easily accessible stem cell source, were able to engraft and regenerate bone to repair critical-size mandibular defects at 6 months post-surgical reconstruction. This pre-clinical study in a large-animal model, specifically swine, allows for testing of a stem cells/scaffold construct in the restoration of orofacial skeletal defects and provides rapid translation of stem-cell-based therapy in orofacial reconstruction in human clinical trials.
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Affiliation(s)
- Y Zheng
- Salivary Gland Disease Center and the Molecular Laboratory for Gene Therapy & Tooth Regeneration, Capital Medical University School of Stomatology, Beijing, China
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Götz W, Gerber T, Michel B, Lossdörfer S, Henkel KO, Heinemann F. Immunohistochemical characterization of nanocrystalline hydroxyapatite silica gel (NanoBone(r)) osteogenesis: a study on biopsies from human jaws. Clin Oral Implants Res 2009; 19:1016-26. [PMID: 18828818 DOI: 10.1111/j.1600-0501.2008.01569.x] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
OBJECTIVES Bone substitute biomaterials may be osteogenic, osteoconductive or osteoinductive. To test for these probable characteristics in a new nanoporous grafting material consisting of nanocrystalline hydroxyapatite embedded in a porous silica gel matrix (NanoBone(s)), applied in humans, we studied biopsies from 12 patients before dental implantation following various orofacial augmentation techniques with healing times of between 3.5 and 12 months. MATERIAL AND METHODS Sections from decalcified specimens were investigated using histology, histochemistry [periodic acid Schiff, alcian blue staining and tartrate-resistant acid phosphatase (TRAP)] and immunohistochemistry, with markers for osteogenesis, bone remodelling, resorption and vessel walls (alkaline phosphatase, bone morphogenetic protein-2, collagen type I, ED1, osteocalcin, osteopontin, runx2 and Von-Willebrand factor). RESULTS Histologically, four specific stages of graft transformation into lamellar bone could be characterized. During early stages of healing, bone matrix proteins were absorbed by NanoBone(s) granules, forming a proteinaceous matrix, which was invaded by small vessels and cells. We assume that the deposition of these molecules promotes early osteogenesis in and around NanoBone(s) and supports the concomitant degradation probably by osteoclast-like cells. TRAP-positive osteoclast-like cells were localized directly on the granular surfaces. Runx2-immunoreactive pre-osteoblasts, which are probably involved in direct osteogenesis forming woven bone that is later transformed into lamellar bone, were attracted. Graft resorption and bone apposition around the graft granules appear concomitantly. CONCLUSIONS We postulate that NanoBone(s) has osteoconductive and biomimetic properties and is integrated into the host's physiological bone turnover at a very early stage.
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Affiliation(s)
- Werner Götz
- Department of Orthodontics, Oral Biology Laboratory, University of Bonn, Dental Hospital, Bonn, Germany.
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Pieri F, Lucarelli E, Corinaldesi G, Fini M, Aldini NN, Giardino R, Donati D, Marchetti C. Effect of mesenchymal stem cells and platelet-rich plasma on the healing of standardized bone defects in the alveolar ridge: a comparative histomorphometric study in minipigs. J Oral Maxillofac Surg 2009; 67:265-72. [PMID: 19138598 DOI: 10.1016/j.joms.2008.06.036] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2007] [Revised: 03/26/2008] [Accepted: 06/17/2008] [Indexed: 02/04/2023]
Abstract
PURPOSE The purpose of this study was to test the effect of the combination of mesenchymal stem cells (MSCs) and platelet-rich plasma (PRP) incorporated into a fluorohydroxyapatite (FHA) scaffold on bone regeneration in cylindrical defects in the edentulous mandibular ridge of minipigs. MATERIALS AND METHODS Two mandibular premolar teeth were extracted bilaterally in 8 adult minipigs. After 2 months, 4 standardized defects of 3.5 mm diameter and 8 mm depth were created in each root site. The defects were randomly grafted with autogenous mandibular bone, FHA alone, PRP-FHA, or MSCs-PRP-FHA. A resorbable collagen membrane was placed over the defect area and the flaps were sutured. The animals were sacrificed 3 months later and biopsy samples were taken from the defect sites for histologic and histomorphometric assessment. RESULTS There was no evidence of inflammation or adverse tissue reaction with either treatment. MSCs-PRP-FHA-treated sites showed new vital bone between residual grafting particles. PRP-FHA- and FHA-treated sites showed residual particles in a background of marrow soft tissue with a moderate quantity of newly formed bone. Autogenous bone (46.97%) and MSCs-PRP-FHA (45.28%) produced a significantly higher amount of vital bone than PRP-FHA (37.95%), or FHA alone (36.03%). Further, the MSCs-PRP-FHA-treated defects showed a significantly higher percentage of contact between graft particles and newly formed bone compared with PRP-FHA and FHA group (59.23% vs 48.37% and 46.43%, respectively). CONCLUSIONS Our results suggest that, in this animal model, the addition of MSCs to PRP-FHA enhances bone formation after 3 months.
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Affiliation(s)
- Francesco Pieri
- Department of Odontostomatological Sciences, University of Bologna, Bologna, Italy.
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Young S, Bashoura AG, Borden T, Baggett LS, Jansen JA, Wong M, Mikos AG. Development and characterization of a rabbit alveolar bone nonhealing defect model. J Biomed Mater Res A 2008; 86:182-94. [PMID: 17969052 DOI: 10.1002/jbm.a.31639] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The aim of this study was to develop an easily accessible and reproducible, nonhealing alveolar bone defect in the rabbit mandible. Twenty-four adult male New Zealand white rabbits underwent unilateral mandibular defect surgery. Two types of defect in the premolar/molar region were compared: (1) a 10-mm "full thickness" cylindrical defect removing both cortical plates and the intervening trabecular bone and tooth roots; (2) a 10-mm "partial thickness" cylindrical defect removing only the lateral bony cortex, trabecular bone, and tooth roots. Both types of defect were examined at 0, 8, and 16 weeks using histology and/or microcomputed tomography to determine the quality and quantity of bone formation. The partial thickness defect displayed significant bone fill at 8 weeks (86.9% +/- 10.8%), and complete regeneration of bony contours and bridging by 16 weeks. In contrast, the full thickness defect was never able to bridge itself and displayed no significant difference in bone regeneration between the 8-week (61.5% +/- 3.7%) and 16-week (55.1% +/- 18.5%) time points. These results indicate that a nonhealing defect can be created with a 10-mm bicortical cylindrical ostectomy placed in the premolar/molar region of the rabbit mandible, demonstrating the potential of this animal model as a test bed for mandibular biomaterials and tissue-engineering constructs.
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Affiliation(s)
- Simon Young
- Department of Bioengineering, Rice University, Houston, Texas 77251-1892, USA
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Spontaneous bone healing of the large bone defects in the mandible. Int J Oral Maxillofac Surg 2008; 37:1111-6. [PMID: 18760900 DOI: 10.1016/j.ijom.2008.07.008] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2007] [Revised: 03/30/2008] [Accepted: 07/14/2008] [Indexed: 10/21/2022]
Abstract
Spontaneous healing of large bone defects in the mandibles of 33 patients was studied. Standard postoperative clinical and radiographic examinations were performed immediately after surgery and after 2, 6 and 12 months. They were analysed using a novel relative bone densitometry method and indexes of relative bone healing were established. Spontaneous bone regeneration occurred in all patients clinically, and the computer analysis of radiographs showed that the mean final bone density in the bone defects was 88% of the bone density of the surrounding healthy bone. In the cases of smaller defects (the greatest diameter on panoramic radiographs was 20-30 mm) the final bone density was 97%, while the larger defects finally healed with 84% of the bone density of the surrounding bone. Increased patient age had a negative influence on healing and the shape of the bone defects was more important for healing than their volume. Spontaneous bone healing occurred even in large bone defects in the mandible, therefore this simple treatment with low economic and biological costs should be the treatment of choice, taking into account the patient's age, surgical principles and time of rehabilitation.
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Vahtsevanos K, Triaridis S, Patrikidou A, Uttley D, Moore AJ, Bell A, Stapleton S, Archer DJ. The Atkinson Morley's Hospital joint neurosurgical – maxillofacial procedures: Cranioplasty case series 1985–2003. J Craniomaxillofac Surg 2007; 35:336-42. [DOI: 10.1016/j.jcms.2007.06.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2006] [Accepted: 06/05/2007] [Indexed: 11/28/2022] Open
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Springer ING, Warnke PH, Terheyden H, Açil Y, Bülhoff A, Kuchenbecker S, Bolte H, Russo PAJ, Vairaktaris EG, Wiltfang J. Craniectomy and noggin application in an infant model. J Craniomaxillofac Surg 2007; 35:177-84. [PMID: 17582779 DOI: 10.1016/j.jcms.2007.04.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2006] [Accepted: 02/05/2007] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION Noggin is an antagonist of bone morphogenetic proteins (BMP)-2, -4 and -7. Little data are available regarding its clinical utility. Two hypotheses were put forward: firstly, that spontaneous regeneration of calvarial defects with noggin protein would result in diminished bone volume when compared with calvarial defects not so treated. Secondly, that centrifugal cranial expansion would remain undisturbed whether noggin was applied or not. MATERIAL AND METHODS A unilateral defect of the frontal and parietal bones (2x4cm) was generated by excising the right coronal suture in 2-month-old minipigs (n=10) and in group 1 (n=5) no further intervention was undertaken. In the second group (n=5), a collagen type I tissue fleece and noggin protein (1.05mg/ml) were applied. After 4 months the coronal suture regions of frontal sides were examined in each animal by computed tomography and non-decalcified histology. RESULTS Bony gaps of equivalent size remained in animals of both groups. The differences in bone volumes of the experimental sides of group 1 were not statistically significantly different (p=0.117) when compared with those of group 2. A significant difference in the bone volumes of the experimental versus control (unoperated) sides was found in both group 1 (p=0.043) and group 2 (p=0.043). Internal skull diameters increased by 16.4% in both groups but the physiological centrifugal cranial expansion remained undisturbed. Bone densities of the experimental and control sides of groups 1 and 2 were not statistically significantly different (both p>0.05). CONCLUSIONS The first hypothesis was contradicted: the quantity and quality of spontaneous bone regenerates was not altered by application of noggin protein. The second hypothesis was confirmed: no disruption of subsequent cranial development was seen. It may be that a single application of noggin protein in this study was insufficient. However, it may well be suggested that the continuous supplementation of noggin, for example by adenoviral noggin gene transfer may significantly reduce the quantity of spontaneous bone regeneration in a similar experiment.
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Affiliation(s)
- Ingo N G Springer
- Department of Oral and Maxillofacial Surgery, University of Kiel, Kiel, Germany.
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Van Damme PA. The vistas and horizons of bony reconstruction—Commentary. J Craniomaxillofac Surg 2005; 33:75-8. [PMID: 15804583 DOI: 10.1016/j.jcms.2004.11.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2004] [Accepted: 11/15/2004] [Indexed: 11/16/2022] Open
Affiliation(s)
- Philip A Van Damme
- Department of Oral and Cranio-Maxillofacial Surgery, Radboud University, Nijmegen Medical Centre, Nijmegen HB 6500, The Netherlands.
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