1
|
Tan T, Song D, Hu S, Li X, Li M, Wang L, Feng H. Structure and Properties of Bioactive Glass-Modified Calcium Phosphate/Calcium Sulfate Biphasic Porous Self-Curing Bone Repair Materials and Preliminary Research on Their Osteogenic Effect. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15227898. [PMID: 36431384 PMCID: PMC9699338 DOI: 10.3390/ma15227898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/26/2022] [Accepted: 11/07/2022] [Indexed: 06/01/2023]
Abstract
In this study, calcium phosphate (CP)/calcium sulfate biphasic bone repair materials were modified with bioactive-glass (BG) to construct a self-curing bone repair material. Tetracalcium phosphate, calcium hydrogen phosphate dihydrate, and calcium sulfate hemihydrate (CSH) with different BG ratios and phosphate solution were reacted to prepare a porous self-curing bone repair material (CP/CSH/BG). The solidification time was about 12 min, and the material was morphologically stable in 24 h. The porosity was about 50%, with a pore size around 200 μm. The strength of CP/CSH/BG was approaching trabecular bone, and could be gradually degraded in Tris-HCl solution. MC3T3-E1 cells were cultured in the leaching solution of the materials. Cytotoxicity was detected using Cell Counting Kit 8 assays, and the expression of osteogenesis-related biomarkers was detected using quantitative real-time reverse transcription PCR (qRT-PCR). The results showed that all BG groups had increased ALP and ARS staining, implying that the BG groups could promote osteoblast mineralization in vitro. qRT-PCR showed significant upregulation of bone-related gene expression (Osx, Ocn, Runx2, and Col1) in the 20% BG group (p < 0.05). Therefore, the CP/CSH/BG self-curing bone repair materials can promote osteogenesis, and might be applied for bone regeneration, especially for polymorphic bone defect repair.
Collapse
Affiliation(s)
- Tao Tan
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Haidian District, Beijing 100081, China
| | - Danyang Song
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Haidian District, Beijing 100081, China
| | - Suning Hu
- Dental Clinic, Peking University International Hospital, Life Garden Road, Changping District, Beijing 102206, China
| | - Xiangrui Li
- Beijing Naton Medical Institute Co., Ltd., Building 1, Yard 9, Chengwan Street, Haidian District, Beijing 100086, China
| | - Mei Li
- Beijing Naton Medical Institute Co., Ltd., Building 1, Yard 9, Chengwan Street, Haidian District, Beijing 100086, China
| | - Lei Wang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Haidian District, Beijing 100081, China
| | - Hailan Feng
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Haidian District, Beijing 100081, China
| |
Collapse
|
2
|
Ortiz-Morales G, Loya-Garcia D, Colorado-Zavala MF, Gomez-Elizondo DE, Soifer M, Srinivasan B, Agarwal S, Rodríguez-Garcia A, Perez VL, Amescua G, Iyer G. The evolution of the modified osteo-odonto-keratoprosthesis, its reliability, and long-term visual rehabilitation prognosis: An analytical review. Ocul Surf 2022; 24:129-144. [DOI: 10.1016/j.jtos.2022.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 03/14/2022] [Accepted: 03/15/2022] [Indexed: 10/18/2022]
|
3
|
Avadhanam V, Ingavle G, Zheng Y, Kumar S, Liu C, Sandeman S. Biomimetic bone-like composites as osteo-odonto-keratoprosthesis skirt substitutes. J Biomater Appl 2020; 35:1043-1060. [PMID: 33174770 PMCID: PMC7917574 DOI: 10.1177/0885328220972219] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Osteo-odonto-keratoprostheses, incorporating dental laminate material as an
anchoring skirt around a central poly(methyl methacrylate) (PMMA) optic, have
been used to replace the cornea for many years. However, there are many
intricacies associated with the use of autologous dental laminate material,
surgical complexity and skirt erosion. Tissue engineering approaches to bone
replacement may offer suitable alternatives in osteo-odonto-keratoprosthesis
(OOKP) surgery. In this study, a hydrogel polymer composite was investigated as
a synthetic substitute for the OOKP skirt. A novel high strength
interpenetrating network (IPN) hydrogel composite with nano-crystalline
hydroxyapatite (nHAp) coated poly (lactic-co-glycolic acid) PLGA microspheres
was created to mimic the alveo-dental lamina by employing agarose and
poly(ethylene glycol) diacrylate (PEGDA) polymers. The incorporation of nHAp
coated PLGA microspheres into the hybrid IPN network provide a micro-environment
similar to that of skeletal tissues and improve cellular response. Agarose was
used as a first network to encapsulate keratocytes/3T3 fibroblasts and PEGDA
(6000 Da) was used as a second network with varying concentrations (20 and 40 wt
%) to produce a strong and biocompatible scaffold. An increased concentration of
either agarose or PEG-DA and incorporation of nHAp coated PLGA microspheres led
to an increase in the elastic modulus. The IPN hydrogel combinations supported
the adhesion and proliferation of both fibroblast and ocular human keratocyte
cell types during in in-vitro testing. The cells endured the
encapsulation process into the IPN and remained viable at 1 week
post-encapsulation in the presence of nHAp coated microspheres. The material did
not induce significant production of inflammatory cytokine IL-6 in comparison to
a positive control (p < 0.05) indicating non-inflammatory
potential. The nHAp encapsulated composite IPN hydrogels are mechanically
strong, cell supportive, non-inflammatory materials supporting their development
as OOKP skirt substitutes using a new approach to dental laminate biomimicry in
the OOKP skirt material.
Collapse
Affiliation(s)
- Venkata Avadhanam
- Brighton and Sussex Medical School, Brighton, UK.,Bristol Eye Hospital, Bristol, UK
| | - Ganesh Ingavle
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK.,Symbiosis Centre for Stem Cell Research, Symbiosis International University, Pune, India
| | - Yishan Zheng
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| | - Sandeep Kumar
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| | - Christopher Liu
- Brighton and Sussex Medical School, Brighton, UK.,Sussex Eye Hospital, Brighton, UK.,Tongdean Eye Clinic, Hove, UK
| | - Susan Sandeman
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| |
Collapse
|
4
|
Li Z, Goh TW, Yam GHF, Thompson BC, Hu H, Setiawan M, Sun W, Riau AK, Tan DT, Khor KA, Mehta JS. A sintered graphene/titania material as a synthetic keratoprosthesis skirt for end-stage corneal disorders. Acta Biomater 2019; 94:585-596. [PMID: 31129362 DOI: 10.1016/j.actbio.2019.05.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 05/16/2019] [Accepted: 05/20/2019] [Indexed: 01/21/2023]
Abstract
An artificial cornea or keratoprosthesis requires high mechanical strength, good biocompatibility, and sufficient wear and corrosion resistance to withstand the hostile environment. We report a reduced graphene oxide-reinforced titania-based composite for this application. Graphene oxide nanoparticles (GO) and liquid crystalline graphene oxide (LCGO) were the graphene precursors and mixed with titanium dioxide (TiO2) powder. The composites reinforced with reduced GO or LCGO were produced through spark plasma sintering (SPS). The mechanical properties (Young's modulus and hardness), wear behaviour and corrosion resistance were studied using nanoindentation, anoidic polarization, long-term corrosion assay in artificial tear fluid and tribology assay in corroboration with atomic force microscopy and scanning electron microscopy. Biocompatibility was assessed by human corneal stromal cell attachment, survival and proliferation, and DNA damages. Sintered composites were implanted into rabbit corneas to assess for in vivo stability and host tissue responses. We showed that reduced graphene/TiO2 hybrids were safe and biocompatible. In particular, the 1% reduced LCGO/TiO2 (1rLCGO/TiO2) composite was mechanically strong, chemically stable, and showed better wear and corrosion resistance than pure titania and other combinations of graphene-reinforced titania. Hence the 1rLCGO/ TiO2 bioceramics can be a potential skirt biomaterial for keratoprosthesis to treat end-stage corneal blindness. STATEMENT OF SIGNIFICANCE: The osteo-odonto-keratoprosthesis (OOKP) is an artificial cornea procedure used to restore vision in end-stage corneal diseases, however it is contraindicated in young subjects, patients with advanced imflammatory diseases and posterior segment complications. Hence, there is a need of an improved keratoprosthesisskirt material with high mechanical and chemical stability, wear resistance and tissue integration ability. Our study characterized a reduced graphene oxide-reinforced titania-based biomaterial, which demonstrated strong mechanical strength, wear and corrosion resistance, and was safe and biocompatible to human corneal stromal cells. In vivo implantation to rabbit corneas did not cause any immune and inflammation outcomes. In conclusion, this invention is a potential keratoprosthesis skirt biomaterial to withstand the hostile environment in treating end-stage corneal blindness.
Collapse
|
5
|
Rahmani S, Kanavi MR, Javadi MA, Langroudi MM, Aski SA. Histopathologic Evaluation of Polymer Supports for Pintucci-type Keratoprostheses: An Animal Study. J Ophthalmic Vis Res 2019; 14:243-250. [PMID: 31660102 PMCID: PMC6815345 DOI: 10.18502/jovr.v14i3.4779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 10/28/2018] [Indexed: 11/30/2022] Open
Abstract
Purpose To report histopathological findings for different types of polymers proposed as support for a Pintucci-type keratoprosthesis. Methods Six polymers, including three types of polyesters (#1-3), one type of polytetrafluoroethylene (PTFE, #4), polyethylene (#5), and expanded polytetrafluoroethylene (ePTFE, #6) were evaluated. Four samples of each material were placed under the orbicularis oculi muscles of 12 rabbits. After five weeks, the samples were removed and evaluated histopathologically. Fibrovascular tissue ingrowths were investigated in terms of tissue penetration depth into the materials (graded as none, mild, moderate, and intense) and fibrovascular ingrowth area at the ultimate level of tissue penetrance. ImageJ software was used to calculate fibrovascular tissue area between the material fibers, and the mean area values were compared between the materials. Results Polyester materials #1 and #3 demonstrated intense fibrovascular tissue penetration with a large fibrovascular ingrowth area; no overt tissue ingrowth was observed into material #6. The mean area of penetrated fibrovascular tissues was significantly different between materials (P < 0.001). Materials #2, #4, and #5 showed moderate fibrovascular tissue ingrowth and the area of presented fibrovascular tissue at the paracentral parts of material #4 was significantly smaller than that of materials #1 (P = 0.02) and #3 (P = 0.01). Conclusion Two polyester materials that had relatively large pore sizes demonstrated a deep and large area of fibrovascular ingrowth. Given that material #3 is thicker and more consistent than material #1, the former can be used as the appropriate material for supporting the Pintucci-type keratoprosthesis.
Collapse
Affiliation(s)
- Saeed Rahmani
- Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Optometry, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mozhgan Rezaei Kanavi
- Ocular Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Ali Javadi
- Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Sasha Afsar Aski
- Ocular Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| |
Collapse
|
6
|
Mobaraki M, Abbasi R, Omidian Vandchali S, Ghaffari M, Moztarzadeh F, Mozafari M. Corneal Repair and Regeneration: Current Concepts and Future Directions. Front Bioeng Biotechnol 2019; 7:135. [PMID: 31245365 PMCID: PMC6579817 DOI: 10.3389/fbioe.2019.00135] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 05/20/2019] [Indexed: 12/13/2022] Open
Abstract
The cornea is a unique tissue and the most powerful focusing element of the eye, known as a window to the eye. Infectious or non-infectious diseases might cause severe visual impairments that need medical intervention to restore patients' vision. The most prominent characteristics of the cornea are its mechanical strength and transparency, which are indeed the most important criteria considerations when reconstructing the injured cornea. Corneal strength comes from about 200 collagen lamellae which criss-cross the cornea in different directions and comprise nearly 90% of the thickness of the cornea. Regarding corneal transparency, the specific characteristics of the cornea include its immune and angiogenic privilege besides its limbus zone. On the other hand, angiogenic privilege involves several active cascades in which anti-angiogenic factors are produced to compensate for the enhanced production of proangiogenic factors after wound healing. Limbus of the cornea forms a border between the corneal and conjunctival epithelium, and its limbal stem cells (LSCs) are essential in maintenance and repair of the adult cornea through its support of corneal epithelial tissue repair and regeneration. As a result, the main factors which threaten the corneal clarity are inflammatory reactions, neovascularization, and limbal deficiency. In fact, the influx of inflammatory cells causes scar formation and destruction of the limbus zone. Current studies about wound healing treatment focus on corneal characteristics such as the immune response, angiogenesis, and cell signaling. In this review, studied topics related to wound healing and new approaches in cornea regeneration, which are mostly related to the criteria mentioned above, will be discussed.
Collapse
Affiliation(s)
- Mohammadmahdi Mobaraki
- Biomaterials Group, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Reza Abbasi
- Biomaterials Group, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Sajjad Omidian Vandchali
- Biomaterials Group, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Maryam Ghaffari
- Biomaterials Group, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Fathollah Moztarzadeh
- Biomaterials Group, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Masoud Mozafari
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
7
|
Kaur J. Osteo-odonto keratoprosthesis: Innovative dental and ophthalmic blending. J Indian Prosthodont Soc 2018; 18:89-95. [PMID: 29692560 PMCID: PMC5903185 DOI: 10.4103/jips.jips_283_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 02/01/2018] [Indexed: 11/25/2022] Open
Abstract
Corneal diseases are among the major causes of global blindness, secondary to cataract. osteo-odonto keratoprosthesis (OOKP) is the ideal treatment for patients with end-stage inflammatory corneal diseases where a portion of tooth along with bone is used to support an optical cylinder to restore vision in such patients. OOKP surgery requires multidisciplinary approach involving dentists, ophthalmologists, and radiologists. Very less is known in dentistry about the role of the periodontium in the field of ophthalmology. This paper highlights OOKP indications, contraindications, surgical procedure, role of oral structures, advantages, and limitations.
Collapse
Affiliation(s)
- Jaswinder Kaur
- Department of Prosthodontics, Baba Jaswant Singh Dental College, Hospital and Research Institute, Ludhiana, Punjab, India
| |
Collapse
|
8
|
|
9
|
Keratoprosthesis: A Review of Recent Advances in the Field. J Funct Biomater 2016; 7:jfb7020013. [PMID: 27213461 PMCID: PMC4932470 DOI: 10.3390/jfb7020013] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Revised: 05/04/2016] [Accepted: 05/13/2016] [Indexed: 12/24/2022] Open
Abstract
Since its discovery in the years of the French Revolution, the field of keratoprostheses has evolved significantly. However, the path towards its present state has not always been an easy one. Initially discarded for its devastating complications, the introduction of new materials and the discovery of antibiotics in the last century gave new life to the field. Since then, the use of keratoprostheses for severe ocular surface disorders and corneal opacities has increased significantly, to the point that it has become a standard procedure for corneal specialists worldwide. Although the rate of complications has significantly been reduced, these can impede the long-term success, since some of them can be visually devastating. In an attempt to overcome these complications, researchers in the field have been recently working on improving the design of the currently available devices, by introducing the use of new materials that are more biocompatible with the eye. Here we present an update on the most recent research in the field.
Collapse
|
10
|
Baino F, Vitale-Brovarone C. Bioceramics in ophthalmology. Acta Biomater 2014; 10:3372-97. [PMID: 24879312 DOI: 10.1016/j.actbio.2014.05.017] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 05/15/2014] [Accepted: 05/16/2014] [Indexed: 12/21/2022]
Abstract
The benefits of ceramics in biomedical applications have been universally appreciated as they exhibit an extraordinarily broad set of physico-chemical, mechanical and biological properties which can be properly tailored by acting on their composition, porosity and surface texture to increase their versatility and suitability for targeted healthcare applications. Bioceramics have traditionally been used for the repair of hard tissues, such as bone and teeth, mainly due to their suitable strength for load-bearing applications, wear resistance (especially alumina, zirconia and composites thereof) and, in some cases, bone-bonding ability (calcium orthophosphates and bioactive glasses). Bioceramics have been also applied in other medical areas, like ophthalmic surgery; although their use in such a context has been scientifically documented since the late 1700s, the potential and importance of ceramic ocular implants still seem to be underestimated and an exhaustive, critical assessment is currently lacking in the relevant literature. The present review aims to fill this gap by giving a comprehensive picture of the ceramic-based materials and implants that are currently used in ophthalmology and pointing out the strengths and weaknesses of the existing devices. A prospect for future research is also provided, highlighting the potential of new, smart bioceramics able to carry specific added values which could have a significant impact on the treatment of ocular diseases.
Collapse
|
11
|
Baino F, Perero S, Ferraris S, Miola M, Balagna C, Verné E, Vitale-Brovarone C, Coggiola A, Dolcino D, Ferraris M. Biomaterials for orbital implants and ocular prostheses: overview and future prospects. Acta Biomater 2014; 10:1064-87. [PMID: 24342039 DOI: 10.1016/j.actbio.2013.12.014] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 11/29/2013] [Accepted: 12/09/2013] [Indexed: 12/21/2022]
Abstract
The removal of an eye is one of the most difficult and dramatic decisions that a surgeon must consider in case of severe trauma or life-threatening diseases to the patient. The philosophy behind the design of orbital implants has evolved significantly over the last 60 years, and the use of ever more appropriate biomaterials has successfully reduced the complication rate and improved the patient's clinical outcomes and satisfaction. This review provides a comprehensive picture of the main advances that have been made in the development of innovative biomaterials for orbital implants and ocular prostheses. Specifically, the advantages, limitations and performance of the existing devices are examined and critically compared, and the potential of new, smart and suitable biomaterials are described and discussed in detail to outline a forecast for future research directions.
Collapse
Affiliation(s)
- Francesco Baino
- Institute of Materials Physics and Engineering, Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy.
| | - Sergio Perero
- Institute of Materials Physics and Engineering, Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy; Istituto Superiore Mario Boella, Torino, Italy
| | - Sara Ferraris
- Institute of Materials Physics and Engineering, Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy
| | - Marta Miola
- Institute of Materials Physics and Engineering, Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy
| | - Cristina Balagna
- Institute of Materials Physics and Engineering, Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy
| | - Enrica Verné
- Institute of Materials Physics and Engineering, Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy
| | - Chiara Vitale-Brovarone
- Institute of Materials Physics and Engineering, Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy
| | - Andrea Coggiola
- S.O.C. Oculistica, Azienda Ospedaliera Nazionale SS. Antonio e Biagio e Cesare Arrigo, Via Venezia 16, Alessandria, Italy
| | - Daniela Dolcino
- S.O.C. Oculistica, Azienda Ospedaliera Nazionale SS. Antonio e Biagio e Cesare Arrigo, Via Venezia 16, Alessandria, Italy
| | - Monica Ferraris
- Institute of Materials Physics and Engineering, Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy
| |
Collapse
|