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Quan BD, Sadeghi R, Ikeda Y, Ganss B, Hamilton DW, McCulloch CA, Sone ED. Screening of functionalized collagen membranes with a porcine periodontal regeneration model. Oral Dis 2023; 29:2845-2853. [PMID: 36458549 DOI: 10.1111/odi.14445] [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: 07/04/2022] [Revised: 10/18/2022] [Accepted: 11/11/2022] [Indexed: 12/03/2022]
Abstract
OBJECTIVES Current methods for periodontal regeneration do not promote collagen fiber insertions into new bone and cementum. We used a pig wound model to screen different functionalized collagen membranes in promoting periodontal reattachment to root surfaces. METHODS Treatment groups included (1) control with no membranes, (2) collagen-coated membranes, (3) membranes with insulin-like growth factor-1 (IGF-1), (4) membranes with amelotin, or (5) membranes attached with calcium phosphate cement (CPC), or with CPC combined with IGF-1. Flap procedures were performed on mandibular and maxillary premolars of each pig. RESULTS Histomorphometric, micro-CT, and clinical measurements obtained at 4 and 12 weeks after surgery showed cementum formation on denuded roots and reformation of alveolar bone, indicating that the pig model can model healing responses in periodontal regeneration. Calcium phosphate cement simplified procedures by eliminating the need for sutures and improved regeneration of alveolar bone (p < 0.05) compared with other treatments. There was a reduction (p < 0.05) of PD only for the IGF group. Large observed variances between treatment groups indicated that a priori power analyses should be conducted to optimize statistical analysis. CONCLUSIONS Pigs can model discrete elements of periodontal healing using collagen-based, functionalized membranes. Screening indicates that membrane anchorage with calcium phosphate cements improve regeneration of alveolar bone.
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Affiliation(s)
- Bryan D Quan
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Rokhsareh Sadeghi
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Yuichi Ikeda
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
- Department of Periodontology, Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Bernhard Ganss
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Douglas W Hamilton
- Department of Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | | | - Eli D Sone
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
- Department of Materials Science and Engineering, University of Toronto, Toronto, Ontario, Canada
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Kim SJ, Yang SC, Jo YJ, Lee JS. Multilayer Collagen Sheet Graft for Corneal Perforation with a Corneal Ulcer. JOURNAL OF THE KOREAN OPHTHALMOLOGICAL SOCIETY 2020. [DOI: 10.3341/jkos.2020.61.12.1527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Spinell T, Saliter J, Hackl B, Unger K, Hickel R, Folwaczny M. In-vitro cytocompatibility and growth factor content of GBR/GTR membranes. Dent Mater 2019; 35:963-969. [PMID: 31056222 DOI: 10.1016/j.dental.2019.03.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 03/04/2019] [Accepted: 03/27/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To assess the cytocompatibility of five commercially available xenogenic barrier membranes used for oral regenerative procedures and to determine the growth factor content of these membranes in-vitro. METHODS Human mesenchymal stem cells (hMSCs) and immortalized periodontal ligament stem cells (PDL-hTERTs) were used to determine the cytocompatibility of xenogenic barrier membranes made of collagen (Biogide, BG, Geistlich Pharma AG, Switzerland; Biomend, BM, Zimmer Biomet, USA; Osseoguard OG, Zimmer Biomet, USA; OssixPlus, OX, Datum Dental, Israel) or extracellular matrix (ECM) (Dynamatrix, DM, Keystone Dental, USA) and of their eluates obtained by washing. Cells were cultured with previously washed and unwashed membranes (n=4) and in the medium used for washing (eluate). Cell proliferation at 3 days (eluates) and at 7 days (membranes) was assessed using the WST-1 cell proliferation kit. Growth factor content of the membranes was measured using multiplex ELISA. RESULTS The eluate of BG and BM significantly inhibited proliferation of hMSCs, whereas DM and OX showed stimulating effects. The highest impact was observed for DM, its eluate doubled the cell proliferation of adherent cells when compared to the control (p<0.001). The eluate of OG did not influence eluate cell cultures (p>0.05). The presence of membranes had different impact on hMSCs and PDLs. hMSCs seem to be more resistant to the inhibitory effects of BG, OG and BM. hMSCs are only affected by OX, which actually stimulates hMSCs when the specimens are not washed previously. PDLs however proliferate significantly less once they are placed into culture with BM and OG as well as BG-not washed. Once BG is washed no inhibitory effect on PDLs was observed, however overall the washing of membrane samples prior to the placement into the cell culture did hardly have any effect on the outcome. The strongest inhibition of proliferation was shown with the BM and OG membrane in PDL-hTERTs (p<0.001). Growth factor contents were quite similar quantitatively and qualitatively among the tested membranes with concentrations in the range of 50-500 pg/ml. Intriguingly DM contained considerably higher amounts of bFGF with up to 8000 pg/ml. SIGNIFICANCE The collagen membranes cross-linked with aldehydes show poor outcomes in PDLs while the collagen membrane cross-linked with polysaccharides generally shows promising results similar to the ECM-membrane DM in both membrane and eluate tests. The findings may be due to various factors, especially differences observed in composition, processing and bFGF content.
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Affiliation(s)
- Thomas Spinell
- Department of Operative Dentistry and Periodontology, University Hospital, LMU Munich, Goethestr. 70, 80336 Munich, Germany.
| | - Julia Saliter
- Department of Operative Dentistry and Periodontology, University Hospital, LMU Munich, Goethestr. 70, 80336 Munich, Germany.
| | - Brigitte Hackl
- Department of Operative Dentistry and Periodontology, University Hospital, LMU Munich, Goethestr. 70, 80336 Munich, Germany.
| | - Kristian Unger
- Research Unit Radiation Cytogenetics, Helmholtz Zentrum Muenchen, Ingolstaedter-Landstr. 1, 85764 Neuherberg, Germany.
| | - Reinhard Hickel
- Department of Operative Dentistry and Periodontology, University Hospital, LMU Munich, Goethestr. 70, 80336 Munich, Germany.
| | - Matthias Folwaczny
- Department of Operative Dentistry and Periodontology, University Hospital, LMU Munich, Goethestr. 70, 80336 Munich, Germany.
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Salamanca E, Tsai CY, Pan YH, Lin YT, Huang HM, Teng NC, Lin CT, Feng SW, Chang WJ. In Vitro and In Vivo Study of a Novel Porcine Collagen Membrane for Guided Bone Regeneration. MATERIALS 2016; 9:ma9110949. [PMID: 28774071 PMCID: PMC5457258 DOI: 10.3390/ma9110949] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 10/05/2016] [Accepted: 11/04/2016] [Indexed: 12/17/2022]
Abstract
For years, in order to improve bone regeneration and prevent the need of a second stage surgery to remove non-resorbable membranes, biological absorbable membranes have gradually been developed and applied in guided tissue regeneration (GTR). The present study's main objective was to achieve space maintenance and bone regeneration using a new freeze-dried developed porcine collagen membrane, and compare it with an already commercial collagen membrane, when both were used with a bovine xenograft in prepared alveolar ridge bone defects. Prior to surgery, the membrane's vitality analysis showed statistically significant higher cell proliferation in the test membrane over the commercial one. In six beagle dogs, commercial bone xenograft was packed in lateral ridge bone defects prepared in the left and right side and then covered with test porcine collagen membrane or commercial collagen membrane. Alveolar height changes were measured. Histomorphometric results, in vitro and in vivo properties indicated that the new porcine collagen membrane is biocompatible, enhances bone xenograft osteoconduction, and reduces the alveolar ridge height reabsorption rate.
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Affiliation(s)
- Eisner Salamanca
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan.
| | - Chi-Yang Tsai
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan.
- Dental Department, Taipei Medical University Hospital, Taipei 110, Taiwan.
| | - Yu-Hwa Pan
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan.
- Department of General Dentistry, Chang Gung Memorial Hospital, Taipei 106, Taiwan.
- Graduate Institute of Dental and Craniofacial Science, Chang Gung University, Taoyuan 333, Taiwan.
| | - Yu-Te Lin
- Sunmax Biotech Co., Ltd., Tainan 741, Taiwan.
| | - Haw-Ming Huang
- Graduate Institute of Biomedical Materials & Tissue Engineering, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan.
| | - Nai-Chia Teng
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan.
- Dental Department, Taipei Medical University Hospital, Taipei 110, Taiwan.
| | - Che-Tong Lin
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan.
- Dental Department, Taipei Medical University Hospital, Taipei 110, Taiwan.
| | - Sheng-Wei Feng
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan.
- Dental Department, Taipei Medical University Hospital, Taipei 110, Taiwan.
| | - Wei-Jen Chang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan.
- Dental Department, Taipei Medical University, Shuang-Ho Hospital, Taipei 235, Taiwan.
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Scheyer ET, McGuire MK. Evaluation of Premature Membrane Exposure and Early Healing in Guided Bone Regeneration of Peri-Implant Dehiscence and Fenestration Defects With a Slowly Resorbing Porcine Collagen Ribose Cross-Linked Membrane: A Consecutive Case Series. Clin Adv Periodontics 2015; 5:165-170. [DOI: 10.1902/cap.2014.130080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 01/06/2014] [Indexed: 11/13/2022]
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Chung YM, Lee JY, Jeong SN. Comparative study of two collagen membranes for guided tissue regeneration therapy in periodontal intrabony defects: a randomized clinical trial. J Periodontal Implant Sci 2014; 44:194-200. [PMID: 25177521 PMCID: PMC4148632 DOI: 10.5051/jpis.2014.44.4.194] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 08/02/2014] [Indexed: 11/22/2022] Open
Abstract
PURPOSE THE PURPOSE OF THIS STUDY WAS TO ASSESS AND COMPARE THE CLINICAL AND RADIOGRAPHIC OUTCOMES OF GUIDED TISSUE REGENERATION THERAPY FOR HUMAN PERIODONTAL INTRABONY DEFECTS USING TWO DIFFERENT COLLAGEN MEMBRANES: a porous nonchemical cross-linking collagen membrane (NC) and a bilayer collagen membrane (BC). METHODS Thirty subjects were randomly assigned and divided into the following 3 groups: a test group (NC+BM), in which a NC was used with xenograft bone mineral (BM), a positive control group (BC+BM), in which a BC was used with xenograft BM, and a negative control group (BM), in which only xenograft BM was used. The following clinical measurements were taken at baseline and 3 months after surgery: plaque index, gingival index, probing pocket depth, gingival recession, and clinical attachment level. Radiographic analysis was performed at baseline, 1 week and 3 months after surgery. RESULTS Membrane exposure was not observed in any cases. Significant probing depth reduction, attachment-level gain and bone fill were observed for both test and control groups compared to baseline at 3 months after surgery (P<0.05). However, there were no statistically significant differences in clinical improvement and radiographic bone fill between treatment protocols (P>0.05). CONCLUSIONS Within the limitations of this study, the results suggest that both NC and BC were comparable in terms of clinical and radiographic outcomes for the treatment of periodontal intrabony defects in human subjects.
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Affiliation(s)
- Young-Mi Chung
- Department of Periodontology, Wonkwang University Daejeon Dental Hospital, Wonkwang University School of Dentistry, Daejeon, Korea
| | | | - Seong-Nyum Jeong
- Department of Periodontology, Wonkwang University Daejeon Dental Hospital, Wonkwang University School of Dentistry, Daejeon, Korea
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Hao J, Acharya A, Chen K, Chou J, Kasugai S, Lang NP. Novel bioresorbable strontium hydroxyapatite membrane for guided bone regeneration. Clin Oral Implants Res 2013; 26:1-7. [DOI: 10.1111/clr.12289] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/18/2013] [Indexed: 01/22/2023]
Affiliation(s)
- J. Hao
- Oral Implantology and Regenerative Dental Medicine; Tokyo Medical and Dental University; Tokyo Japan
| | - A. Acharya
- Implant Dentistry; Faculty of Dentistry; The University of Hong Kong; Hong Kong China
| | - K. Chen
- Oral Implantology and Regenerative Dental Medicine; Tokyo Medical and Dental University; Tokyo Japan
| | - J. Chou
- Advanced Tissue Regeneration and Drug Delivery Group; School of Medical and Molecular Biosciences; University of Technology Sydney; Sydney Australia
| | - S. Kasugai
- Oral Implantology and Regenerative Dental Medicine; Tokyo Medical and Dental University; Tokyo Japan
| | - N. P. Lang
- Implant Dentistry; Faculty of Dentistry; The University of Hong Kong; Hong Kong China
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Moura CCG, Soares PBF, Carneiro KF, Souza MAD, Magalhães D. Cytotoxicity of bovine and porcine collagen membranes in mononuclear cells. Braz Dent J 2012; 23:39-44. [PMID: 22460313 DOI: 10.1590/s0103-64402012000100007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Accepted: 11/02/2011] [Indexed: 11/22/2022] Open
Abstract
This study compared the cytotoxicity and the release of nitric oxide induced by collagen membranes in human mononuclear cells. Peripheral blood was collected from each patient and the separation of mononuclear cells was performed by Ficoll. Then, 2x10(5) cells were plated in 48-well culture plates under the membranes in triplicate. The polystyrene surface was used as negative control. Cell viability was assessed by measuring mitochondrial activity (MTT) at 4, 12 and 24 h, with dosage levels of nitrite by the Griess method for the same periods. Data had non-normal distribution and were analyzed by the Kruskal-Wallis test (p<0.05). Statistically significant differences (p<0.05) were observed between the membranes and the control in the experimental period, although there was a significant reduction in viability over time (p<0.01). At 4 and 12 h, the porcine membrane induced a higher release of nitrite compared with the control and bovine membrane, respectively (p<0.01), and this difference was maintained at 24 h (p<0.05). This in vitro study showed that the porcine collagen membrane induces an increased production of proinflammatory mediators by mononuclear cells in the first hours of contact, decreasing with time.
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Dimitriou R, Mataliotakis GI, Calori GM, Giannoudis PV. The role of barrier membranes for guided bone regeneration and restoration of large bone defects: current experimental and clinical evidence. BMC Med 2012; 10:81. [PMID: 22834465 PMCID: PMC3423057 DOI: 10.1186/1741-7015-10-81] [Citation(s) in RCA: 227] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Accepted: 07/26/2012] [Indexed: 12/27/2022] Open
Abstract
Treatment of large bone defects represents a great challenge in orthopedic and craniomaxillofacial surgery. Although there are several methods for bone reconstruction, they all have specific indications and limitations. The concept of using barrier membranes for restoration of bone defects has been developed in an effort to simplify their treatment by offering a single-staged procedure. Research on this field of bone regeneration is ongoing, with evidence being mainly attained from preclinical studies. The purpose of this review is to summarize the current experimental and clinical evidence on the use of barrier membranes for restoration of bone defects in maxillofacial and orthopedic surgery. Although there are a few promising preliminary human studies, before clinical applications can be recommended, future research should aim to establish the 'ideal' barrier membrane and delineate the need for additional bone grafting materials aiming to 'mimic' or even accelerate the normal process of bone formation. Reproducible results and long-term observations with barrier membranes in animal studies, and particularly in large animal models, are required as well as well-designed clinical studies to evaluate their safety, efficacy and cost-effectiveness.
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Affiliation(s)
- Rozalia Dimitriou
- Department of Trauma and Orthopaedics, Leeds Teaching Hospitals NHS Trust, Leeds LS1 3EX, UK
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The development of collagen-GAG scaffold-membrane composites for tendon tissue engineering. Biomaterials 2011; 32:8990-8. [PMID: 21880362 DOI: 10.1016/j.biomaterials.2011.08.035] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Accepted: 08/14/2011] [Indexed: 12/31/2022]
Abstract
Current tissue engineering approaches for tendon defects require improved biomaterials to balance microstructural and mechanical design criteria. Collagen-glycosaminoglycan (CG) scaffolds have shown considerable success as in vivo regenerative templates and in vitro constructs to study cell behavior. While these scaffolds possess many advantageous qualities, their mechanical properties are typically orders of magnitude lower than orthopedic tissues such as tendon. Taking inspiration from mechanically efficient core-shell composites in nature such as plant stems and porcupine quills, we have created core-shell CG composites that display high bioactivity and improved mechanical integrity. These composites feature integration of a low density, anisotropic CG scaffold core with a high density, CG membrane shell. CG membranes were fabricated via an evaporative process that allowed separate tuning of membrane thickness and elastic moduli and were found to be isotropic in-plane. The membranes were then integrated with an anisotropic CG scaffold core via freeze-drying and subsequent crosslinking. Increasing the relative thickness of the CG membrane shell was shown to increase composite tensile elastic modulus by as much as a factor of 36 in a manner consistent with predictions from layered composites theory. CG scaffold-membrane composites were found to support tendon cell viability, proliferation, and metabolic activity in vitro, suggesting they maintain sufficient permeability while demonstrating improved mechanical strength. This work suggests an effective, biomimetic approach for balancing strength and bioactivity requirements of porous scaffolds for tissue engineering.
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