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Rana N, Kapil L, Singh C, Singh A. Modeling Huntington's disease: An insight on in-vitro and in-vivo models. Behav Brain Res 2024; 459:114757. [PMID: 37952684 DOI: 10.1016/j.bbr.2023.114757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/09/2023] [Accepted: 11/09/2023] [Indexed: 11/14/2023]
Abstract
Huntington's disease is a neurodegenerative illness that causes neuronal death most extensively within the basal ganglia. There is a broad class of neurologic disorders associated with the expansion of polyglutamine (polyQ) repeats in numerous proteins. Several other molecular mechanisms have also been implicated in HD pathology, including brain-derived neurotrophic factor (BDNF), mitochondrial dysfunction, and altered synaptic plasticity in central spiny neurons. HD pathogenesis and the effectiveness of therapy approaches have been better understood through the use of animal models. The pathological manifestations of the disease were reproduced by early models of glutamate analog toxicity and mitochondrial respiration inhibition. Because the treatments available for HD are quite limited, it is important to have a definite preclinical model that mimics all the aspects of the disease. It can be used to study mechanisms and validate candidate therapies. Although there hasn't been much success in translating animal research into clinical practice, each model has something special to offer in the quest for a deeper comprehension of HD's neurobehavioral foundations. This review provides insight into various in-vitro-and in-vivo models of HD which may be useful in the screening of newer therapeutics for this incapacitating disorder.
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Affiliation(s)
- Nitasha Rana
- Department of Pharmacology, ISF College of Pharmacy, Moga 142001, Affiliated to I.K Gujral Punjab Technical University, Jalandhar, Punjab, India
| | - Lakshay Kapil
- Department of Pharmacology, ISF College of Pharmacy, Moga 142001, Affiliated to I.K Gujral Punjab Technical University, Jalandhar, Punjab, India
| | - Charan Singh
- Department of Pharmaceutical Sciences, HNB Garhwal University (A Central University), Chauras Campus, Distt. Tehri Garhwal, Uttarakhand 246174, India
| | - Arti Singh
- Department of Pharmacology, ISF College of Pharmacy, Moga 142001, Affiliated to I.K Gujral Punjab Technical University, Jalandhar, Punjab, India.
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Miron RJ, Fujioka-Kobayashi M, Pikos MA, Nakamura T, Imafuji T, Zhang Y, Shinohara Y, Sculean A, Shirakata Y. The development of non-resorbable bone allografts: Biological background and clinical perspectives. Periodontol 2000 2024; 94:161-179. [PMID: 38323368 DOI: 10.1111/prd.12551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 01/04/2024] [Accepted: 01/08/2024] [Indexed: 02/08/2024]
Abstract
Bone grafts are typically categorized into four categories: autografts, allografts, xenografts, and synthetic alloplasts. While it was originally thought that all bone grafts should be slowly resorbed and replaced with native bone over time, accumulating evidence has in fact suggested that the use of nonresorbable xenografts is favored for certain clinical indications. Thus, many clinicians take advantage of the nonresorbable properties/features of xenografts for various clinical indications, such as contour augmentation, sinus grafting, and guided bone regeneration, which are often combined with allografts (e.g., human freeze-dried bone allografts [FDBAs] and human demineralized freeze-dried bone allografts [DFDBAs]). Thus, many clinicians have advocated different 50/50 or 70/30 ratios of allograft/xenograft combination approaches for various grafting procedures. Interestingly, many clinicians believe that one of the main reasons for the nonresorbability or low substitution rates of xenografts has to do with their foreign animal origin. Recent research has indicated that the sintering technique and heating conducted during their processing changes the dissolution rate of hydroxyapatite, leading to a state in which osteoclasts are no longer able to resorb (dissolve) the sintered bone. While many clinicians often combine nonresorbable xenografts with the bone-inducing properties of allografts for a variety of bone augmentation procedures, clinicians are forced to use two separate products owing to their origins (the FDA/CE does not allow the mixture of allografts with xenografts within the same dish/bottle). This has led to significant progress in understanding the dissolution rates of xenografts at various sintering temperature changes, which has since led to the breakthrough development of nonresorbable bone allografts sintered at similar temperatures to nonresorbable xenografts. The advantage of the nonresorbable bone allograft is that they can now be combined with standard allografts to create a single mixture combining the advantages of both allografts and xenografts while allowing the purchase and use of a single product. This review article presents the concept with evidence derived from a 52-week monkey study that demonstrated little to no resorption along with in vitro data supporting this novel technology as a "next-generation" biomaterial with optimized bone grafting material properties.
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Affiliation(s)
- Richard J Miron
- Department of Periodontology, University of Bern, Bern, Switzerland
| | - Masako Fujioka-Kobayashi
- Department of Oral and Maxillofacial Surgery, School of Life Dentistry at Tokyo, The Nippon Dental University, Tokyo, Japan
| | | | - Toshiaki Nakamura
- Department of Periodontology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Takatomo Imafuji
- Department of Periodontology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Yufeng Zhang
- Department of Oral Implantology, University of Wuhan, Wuhan, China
| | - Yukiya Shinohara
- Department of Periodontology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Anton Sculean
- Department of Periodontology, University of Bern, Bern, Switzerland
| | - Yoshinori Shirakata
- Department of Periodontology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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Oirschot BV, van den Beucken J, Mikos AG, Jansen JA. Lateral Bone Augmentation Using a 3D-printed Polymeric Chamber to compare biomaterials. Tissue Eng Part C Methods 2023. [PMID: 37082957 PMCID: PMC10402696 DOI: 10.1089/ten.tec.2023.0025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023] Open
Abstract
The aim of this study was to test the suitability of calcium phosphate cement mixed with poly(lactic-co-glycolic acid microparticles (CPC-PLGA) into a ring-shaped polymeric space-maintaining device as bone graft material for lateral bone augmentation. Therefore, the bone chambers were installed on the lateral portion of the anterior region of the mandibular body of mini-pigs. Chambers were filled with either calcium phosphate cement mixed with poly(lactic-co-glycolic acid microparticles (CPC-PLGA) or BioOss® particles for comparison and left for 4 and 12 weeks. Histology and histomorphometry were used to obtain temporal insight in material degradation and bone formation. Results indicated that between 4 and 12 weeks of implantation, a significant degradation of the CPC-PLGA (from 75.1% to 23.1%) as well as BioOss® material occurred (from 40.6% to 14.4%). Degradation of both materials was associated with the presence of macrophage-like and osteoclast-like cells. Further, a significant increase in bone formation occurred between 4 and 12 weeks for the CPC-PLGA (from 0.1% to 7.2%) as well as BioOss® material (from 8.3% to 23.3%). Statistical analysis showed that bone formation had progressed significantly better using BioOss® compared to CPC-PLGA (p<0.05). In conclusion, this mini-pig study showed that CPC-PLGA does not stimulate lateral bone augmentation using a bone chamber device. Both treatments failed to achieve "clinically" meaningful alveolar ridge augmentation.
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Affiliation(s)
- Bart van Oirschot
- Radboud University Nijmegen Medical Center, Dentistry- Regenerative Biomaterials, Philips van Leydenlaan 25, Nijmegen, Netherlands, 6525 EX;
| | - Jeroen van den Beucken
- Radboudumc Department of Dentistry, 370502, Regenerative Biomaterials, ph v leijdenlaan 25, Nijmegen, Netherlands, 6525 EX
- Radboud University Radboud Institute for Molecular Life Sciences, 59912, Nijmegen, Netherlands, 6525 GA;
| | - Antonios G Mikos
- Rice University, Dept. of Bioengineering - MS 142, 6100 Main Street, Room # 121, Houston, Texas, United States, 77005;
| | - John A Jansen
- Radboud university Medical Center, Professor and Head of Biomaterials, 1st Floor, Room 4.01.03, Thomas van Aquinostraat 4, 6525 GD, Nijmegen, Netherlands, 6662BM;
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van Oirschot B, Mikos AG, Liu Q, van den Beucken JJ, Jansen JA. Fast Degradable Calcium Phosphate Cement for Maxillofacial Bone Regeneration. Tissue Eng Part A 2023; 29:161-171. [PMID: 36458463 PMCID: PMC10162578 DOI: 10.1089/ten.tea.2022.0177] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 11/28/2022] [Indexed: 12/03/2022] Open
Abstract
The aim of this preclinical study was to test the applicability of calcium phosphate cement (CPC)-poly(lactic-co-glycolic acid) (PLGA)-carboxymethylcellulose (CMC) as a bone substitute material for guided bone regeneration (GBR) procedures in a clinically relevant mandibular defect model in minipigs. In the study, a predicate device (i.e., BioOss®) was included for comparison. Critical-sized circular mandibular bone defects were created and filled with either CPC-PLGA-CMC without coverage with a GBR membrane or BioOss covered with a GBR membrane and left to heal for 4 and 12 weeks to obtain temporal insight in material degradation and bone formation. Bone formation increased significantly for both CPC-PLGA-CMC and BioOss with increasing implantation time. Further, no significant differences were found for bone formation at either 4 or 12 weeks between CPC-PLGA-CMC and BioOss. Finally, bone substitute material degradation increased significantly for both CPC-PLGA-CMC and BioOss from 4 to 12 weeks of implantation, showing the highest degradation for CPC-PLGA-CMC (∼85%) compared to BioOss (∼12%). In conclusion, this minipig study showed that CPC-PLGA-CMC can be used as a bone-grafting material and stimulates bone regeneration to a comparable extent as with BioOss particles. Importantly, CPC-PLGA-CMC degrades faster compared to BioOss, is easier to apply into a bone defect, and does not need the use of an additional GBR membrane. Consequently, the data support the further investigation of CPC-PLGA-CMC in human clinical trials. Impact statement Guided bone regeneration (GBR) is a frequently used dental surgical technique to regenerate the alveolar ridge to allow stable implant installation. However, stabilization of the GBR membrane and avoidance of bone graft movement remain a challenge. Consequently, there is need for the development of alternative materials to be used in GBR procedures that are easier to apply and induce predictable bone regeneration. In this minipig study, we focused on the applicability of calcium phosphate cement-poly(lactic-co-glycolic acid)-carboxymethylcellulose as an alternative bone substitute material for GBR procedures without the need of an additional GBR membrane.
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Affiliation(s)
- Bart van Oirschot
- Department of Dentistry—Regenerative Biomaterials, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Antonios G. Mikos
- Department of Bioengineering (MS142), Rice University, Houston, Texas, USA
| | - Qian Liu
- Department of Stomatology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China
| | - Jeroen J.J.P. van den Beucken
- Department of Dentistry—Regenerative Biomaterials, Radboud University Medical Center, Nijmegen, The Netherlands
- Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands
| | - John A. Jansen
- Department of Dentistry—Regenerative Biomaterials, Radboud University Medical Center, Nijmegen, The Netherlands
- Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands
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Alkhasawnah Q, Elmas S, Sohrabi K, Attia S, Heinemann S, El Khassawna T, Heiss C. Confirmation of Calcium Phosphate Cement Biodegradation after Jawbone Augmentation around Dental Implants Using Three-Dimensional Visualization and Segmentation Software. MATERIALS 2021; 14:ma14227084. [PMID: 34832488 PMCID: PMC8618138 DOI: 10.3390/ma14227084] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/10/2021] [Accepted: 11/16/2021] [Indexed: 01/01/2023]
Abstract
The use of autologous bone graft for oral rehabilitation of bone atrophy is considered the gold standard. However, the available grafts do not allow a fast loading of dental implants, as they require a long healing time before full functionality. Innovative bioactive materials provide an easy-to-use solution to this problem. The current study shows the feasibility of calcium phosphate cement paste (Paste-CPC) in the sinus. Long implants were placed simultaneously with the cement paste, and provisional prosthetics were also mounted in the same sessions. Final prosthetics and the full loading took place within the same week. Furthermore, the study shows for the first time the possibility to monitor not only healing progression using Cone Beam Computer tomography (CBCT) but also material retention, over two years, on a case study example. The segmented images showed a 30% reduction of the cement size and an increased mineralized tissue in the sinus. Mechanical testing was performed qualitatively using reverse torque after insertion and cement solidification to indicate clinical feasibility. Both functional and esthetic satisfaction remain unchanged after one year. This flowable paste encourages the augmentation procedure with less invasive measure through socket of removed implants. However, this limitation can be addressed in future studies.
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Affiliation(s)
- Qusai Alkhasawnah
- Experimental Trauma Surgery, Faculty of Medicine, Justus-Liebig-University, Aulweg 128, 35392 Giessen, Germany; (Q.A.); (S.E.); (C.H.)
- Center of Dental Implants, Jordan German Dental Institute, Mamdouh Al Saraireh Street 5, Amman 11821, Jordan
| | - Sera Elmas
- Experimental Trauma Surgery, Faculty of Medicine, Justus-Liebig-University, Aulweg 128, 35392 Giessen, Germany; (Q.A.); (S.E.); (C.H.)
| | - Keywan Sohrabi
- Faculty of Health Sciences, University of Applied Sciences, Wiesenstrasse 14, 35390 Giessen, Germany;
| | - Sameh Attia
- Department of Oral and Maxillofacial Surgery, Justus-Liebig University of Giessen, Klinikstr. 33, 35392 Giessen, Germany;
| | | | - Thaqif El Khassawna
- Experimental Trauma Surgery, Faculty of Medicine, Justus-Liebig-University, Aulweg 128, 35392 Giessen, Germany; (Q.A.); (S.E.); (C.H.)
- Faculty of Health Sciences, University of Applied Sciences, Wiesenstrasse 14, 35390 Giessen, Germany;
- Correspondence: ; Tel.: +49-641-993-0581
| | - Christian Heiss
- Experimental Trauma Surgery, Faculty of Medicine, Justus-Liebig-University, Aulweg 128, 35392 Giessen, Germany; (Q.A.); (S.E.); (C.H.)
- Department of Trauma, Hand and Reconstructive Surgery, Justus-Liebig University Giessen, Rudolf-Buchheim-Street 7, 35392 Giessen, Germany
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Kumar K, Singh R, Mugal V, Dhingra N, Priyadarshni P, Bandgar S. Preservation of Alveolar Ridge using Graft Material after Tooth Extraction: A Clinical Trial. J Pharm Bioallied Sci 2021; 13:S456-S460. [PMID: 34447133 PMCID: PMC8375909 DOI: 10.4103/jpbs.jpbs_603_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 09/28/2020] [Indexed: 11/16/2022] Open
Abstract
Background: The alveolar process is a tooth-dependent structure, and hence, removal of teeth results in the alteration of alveolar process. To alter bone remodeling after dental extraction, various techniques have been put forward for ridge preservation. Aim: The aim of this study is to evaluate and compare the changes of hard and soft tissues in postextraction socket after the application of bone graft material. Materials and Methods: Healthy patients of sample size of 40 were selected who underwent the extraction of anterior tooth irrespective of the arch, from premolar of one side to another, with the exception of incisors in mandible. Twenty patients were randomly selected as the control group and other 20 as the experimental group using an allograft bone material, i.e., beta-tricalcium phosphate to fill the socket. Cone-beam computed tomography (CBCT) was done as baseline preoperative and postoperative at 14 weeks after the extraction. CBCTs data help in recording linear and volumetric measurements which was performed by calibrated examiners to record all the measurements. After measurements, digital planning of dental implants was performed. Results: Forty participants were selected, in which 20 patients each were as the experimental and control groups. No significant difference was found at basal line at any of the cases. At follow-up of 14 weeks, statistical significance was seen in buccal and lingual plate height in the experimental group, and no significant difference was seen in the control group.(P = 0.023). Conclusions: This study clearly points out that an alveolar ridge preservation technique provides therapeutic benefit by limiting bone resorption in comparison to extraction alone.
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Affiliation(s)
- Kunal Kumar
- Department of Dentistry, Patna Medical College and Hospital, Patna, Bihar, India
| | - Revati Singh
- Department of Dentistry, Patna Medical College and Hospital, Patna, Bihar, India
| | - Vishal Mugal
- Department of Prosthodontics, M. A. Rangoonwala College of Dental Sciences and Research Center, Pune, Maharashtra, India
| | - Nikhil Dhingra
- Department of Oral and Maxillofacial Surgery Consultant Oral Surgeon, E-481, Kamal Nagar, Agra, Uttar Pradesh, India
| | - Priyanka Priyadarshni
- Department of Prosthodontics, Patna Dental College and Hospital, Patna, Bihar, India
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Picavet PP, Balligand M, Crigel MH, Antoine N, Claeys S. In vivo evaluation of deer antler trabecular bone as a reconstruction material for bone defects. Res Vet Sci 2021; 138:116-124. [PMID: 34129994 DOI: 10.1016/j.rvsc.2021.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 04/05/2021] [Accepted: 06/09/2021] [Indexed: 11/30/2022]
Abstract
Availability of graft materials to fill up osseous defects has always been a concern in orthopaedic surgeries. Deer antler material is a primary bone structure that is easy to collect and could serve as a xenograft. This study examines the behaviour of red deer antler trabecular cylinders in critical size distal femoral epiphyseal defects in 11 rabbits, and evaluates the effect of the decellularization protocols. Two preparation regimes (A and B) were used, with and without lipids and proteins. Radiographs were taken immediately after surgery and after euthanasia 12 weeks post-implantation. Histological evaluation was performed on non-decalcified 10-μm sections with a van Gieson picro-fuchsin staining protocol. A region of interest was defined for each histological section, evaluating the inflammatory reaction, the fibrosis process, and the osteogenesis. Each histological section was microradiographed to evaluate bone contact, presence of synostosis, remodelling and ossification processes. All antler cylinders were successfully implanted. Final radiographic analysis demonstrated osteointegration of most implants at various stages. Light to moderate inflammation around the grafts was noted with only one case showing full encapsulation. A variable degree of intimacy between implant and host bone was evidenced, with bone remodelling and osteogenesis of various intensity being present in all implanted sites. No differences were found between group A and B. Removal of lipids and proteins in the grafts surprisingly did not seem to matter. Decellularization and sterilization protocols may be advocated. Although it presents several limitations, this study shows some promising results regarding antler trabecular bone osteointegration.
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Affiliation(s)
- Pierre P Picavet
- Department of Clinical Sciences, FARAH, Faculty of Veterinary Medicine, University of Liège, Quartier Vallée 2, Avenue de Cureghem 1 - B67, Liège, Belgium.
| | - Marc Balligand
- Department of Clinical Sciences, FARAH, Faculty of Veterinary Medicine, University of Liège, Quartier Vallée 2, Avenue de Cureghem 1 - B67, Liège, Belgium
| | | | - Nadine Antoine
- Department of Clinical Sciences, FARAH, Faculty of Veterinary Medicine, University of Liège, Quartier Vallée 2, Avenue de Cureghem 1 - B67, Liège, Belgium
| | - Stéphanie Claeys
- Department of Clinical Sciences, FARAH, Faculty of Veterinary Medicine, University of Liège, Quartier Vallée 2, Avenue de Cureghem 1 - B67, Liège, Belgium
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Zhang M, Pu X, Chen X, Yin G. In-vivo performance of plasma-sprayed CaO-MgO-SiO 2-based bioactive glass-ceramic coating on Ti-6Al-4V alloy for bone regeneration. Heliyon 2019; 5:e02824. [PMID: 31763479 PMCID: PMC6861571 DOI: 10.1016/j.heliyon.2019.e02824] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 10/17/2019] [Accepted: 11/04/2019] [Indexed: 12/17/2022] Open
Abstract
The CaO-MgO-SiO2-based bioactive glass-ceramic coating (named M2) on Ti-6Al-4V alloy has been proven to behave well in vitro. But how to make full sense of its performances in terms of osteogenesis and osseointegration in vivo matters very much. For this, the M2-coated Ti-6Al-4V cylinders were prepared by atmospheric plasma spraying (APS) and implanted into New Zealand rabbit for 1, 2 and 3 months, respectively, by setting commercial HA-coated Ti-6Al-4V as the control. It is encouraging that, the two groups bonded with the surrounding tissues stably and newly formed bone grew towards or around the implants after 3-month implantation according to radiographic images. From the histological sections, it is obvious that, compared to the control, the M2-coated implant was more favorable for the osteogenesis and neo-vascularisation in the whole experimental process and demonstrated a better osseointegration with the host bone, indicating the former possessed better osteoconductivity, osteoinductivity and osteogenic ability. The study indicated that the M2-coated Ti-6Al-4V implant exerted a great potential to substitute the commercial HA-coated Ti-6Al-4V implant in repairing load-bearing bone defects.
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Affiliation(s)
- Mengjiao Zhang
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610064, PR China
| | - Ximing Pu
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610064, PR China
| | - Xianchun Chen
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610064, PR China
| | - Guangfu Yin
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610064, PR China
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Akino N, Tachikawa N, Miyahara T, Ikumi R, Kasugai S. Vertical ridge augmentation using a porous composite of uncalcined hydroxyapatite and poly-DL-lactide enriched with types 1 and 3 collagen. Int J Implant Dent 2019; 5:16. [PMID: 31041549 PMCID: PMC6491530 DOI: 10.1186/s40729-019-0167-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 02/13/2019] [Indexed: 11/26/2022] Open
Abstract
Background Previous studies have shown that porous composite blocks containing uncalcined hydroxyapatite (u-HA; 70 wt%) with a scaffold of poly-DL-lactide (PDLLA, 30 wt%) are biodegradable, encourage appropriate bone formation, and are suitable for use as a bone substitute in vertical ridge augmentation. The present study aimed to accelerate osteogenesis in vertical ridge formation by adding types 1 and 3 collagen to the u-HA/PDLLA blocks and assessing the effect. Material and methods The bone substitute in the present study comprised porous composite blocks of u-HA (70 wt%) with a PDLLA (27–29 wt%) scaffold and enriched with types 1 and 3 collagen (1.7 ~ 3.4 wt%). The control blocks were composed of u-HA (70 wt%) and PDLLA (30 wt%). The materials were formed into 8-mm diameter, 2-mm high discs and implanted onto the cranial bones of six rabbits. The animals were sacrificed 4 weeks after implantation, and histological and histomorphometrical analyses were performed to quantitatively evaluate newly formed bone. Results New bone formation occurred with both block types, showing direct contact with the original bone. Mean ± standard deviation bone formation was significantly greater in the experimental blocks (25.6% ± 4.8%) than in the control blocks (17.0% ± 4.7%). Conclusions Histological and histomorphometrical observations indicated that new bone was formed with both block types. The u-HA/PDLLA block with types 1 and 3 collagen is a more promising candidate for vertical ridge augmentation than the u-HA/PDLLA alone block.
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Affiliation(s)
- Norio Akino
- Implant Dentistry, Dental Hospital, Tokyo Medical and Dental University, 113-8510 1-5-45, Yushima, Bunkyo-ku, Tokyo, Japan. .,Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, 113-8510 1-5-45, Yushima, Bunkyo-ku, Tokyo, Japan.
| | - Noriko Tachikawa
- Implant Dentistry, Dental Hospital, Tokyo Medical and Dental University, 113-8510 1-5-45, Yushima, Bunkyo-ku, Tokyo, Japan.,Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, 113-8510 1-5-45, Yushima, Bunkyo-ku, Tokyo, Japan
| | - Takayuki Miyahara
- Implant Dentistry, Dental Hospital, Tokyo Medical and Dental University, 113-8510 1-5-45, Yushima, Bunkyo-ku, Tokyo, Japan
| | - Reo Ikumi
- Implant Dentistry, Dental Hospital, Tokyo Medical and Dental University, 113-8510 1-5-45, Yushima, Bunkyo-ku, Tokyo, Japan
| | - Shohei Kasugai
- Implant Dentistry, Dental Hospital, Tokyo Medical and Dental University, 113-8510 1-5-45, Yushima, Bunkyo-ku, Tokyo, Japan.,Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, 113-8510 1-5-45, Yushima, Bunkyo-ku, Tokyo, Japan
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10
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Stastny P, Sedlacek R, Suchy T, Lukasova V, Rampichova M, Trunec M. Structure degradation and strength changes of sintered calcium phosphate bone scaffolds with different phase structures during simulated biodegradation in vitro. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 100:544-553. [PMID: 30948091 DOI: 10.1016/j.msec.2019.03.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 03/05/2019] [Accepted: 03/08/2019] [Indexed: 12/12/2022]
Abstract
The structure degradation and strength changes of calcium phosphate scaffolds after long-term exposure to an acidic environment simulating the osteoclastic activity were determined and compared. Sintered calcium phosphate scaffolds with different phase structures were prepared with a similar cellular pore structure and an open porosity of over 80%. Due to microstructural features the biphasic calcium phosphate (BCP) scaffolds had a higher compressive strength of 1.7 MPa compared with the hydroxyapatite (HA) and β-tricalcium phosphate (TCP) scaffolds, which exhibited a similar strength of 1.2 MPa. After exposure to an acidic buffer solution of pH = 5.5, the strength of the HA scaffolds did not change over 14 days. On the other hand, the strength of the TCP scaffolds decreased steeply in the first 2 days and reached a negligible value of 0.09 MPa after 14 days. The strength of the BCP scaffolds showed a steady decrease with a reasonable value of 0.5 MPa after 14 days. The mass loss, phase composition and microstructural changes of the scaffolds during degradation in the acidic environment were investigated and a mechanism of scaffold degradation was proposed. The BCP scaffold showed the best cell response in the in vitro tests. The BCP scaffold structure with the highly soluble phase (α-TCP) embedded in a less soluble matrix (β-TCP/HA) exhibited a controllable degradation with a suitable strength stability and with beneficial biological behavior it represented the preferred calcium phosphate structure for a resorbable bone scaffold.
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Affiliation(s)
- Premysl Stastny
- CEITEC BUT, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
| | - Radek Sedlacek
- Department of Mechanics, Biomechanics and Mechatronics, Czech Technical University in Prague, Technicka 4, 166 07 Prague, Czech Republic
| | - Tomas Suchy
- Department of Mechanics, Biomechanics and Mechatronics, Czech Technical University in Prague, Technicka 4, 166 07 Prague, Czech Republic; Institute of Rock Structure and Mechanics, Czech Academy of Sciences, V Holesovickach 41, 182 09 Prague, Czech Republic
| | - Vera Lukasova
- Institute of Experimental Medicine, Czech Academy of Sciences, Videnska 1083, 142 20 Prague, Czech Republic; University Center for Energy Efficient Buildings, Czech Technical University in Prague, Trinecka 1024, 273 43 Bustehrad, Czech Republic; Department of Cell Biology, Charles University, Vinicna 5, 128 00 Prague, Czech Republic
| | - Michala Rampichova
- Institute of Experimental Medicine, Czech Academy of Sciences, Videnska 1083, 142 20 Prague, Czech Republic
| | - Martin Trunec
- CEITEC BUT, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic; Institute of Materials Science and Engineering, Brno University of Technology, Technicka 2, 616 69 Brno, Czech Republic.
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Iviglia G, Kargozar S, Baino F. Biomaterials, Current Strategies, and Novel Nano-Technological Approaches for Periodontal Regeneration. J Funct Biomater 2019; 10:E3. [PMID: 30609698 PMCID: PMC6463184 DOI: 10.3390/jfb10010003] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 12/07/2018] [Accepted: 12/17/2018] [Indexed: 12/14/2022] Open
Abstract
Periodontal diseases involve injuries to the supporting structures of the tooth and, if left untreated, can lead to the loss of the tooth. Regenerative periodontal therapies aim, ideally, at healing all the damaged periodontal tissues and represent a significant clinical and societal challenge for the current ageing population. This review provides a picture of the currently-used biomaterials for periodontal regeneration, including natural and synthetic polymers, bioceramics (e.g., calcium phosphates and bioactive glasses), and composites. Bioactive materials aim at promoting the regeneration of new healthy tissue. Polymers are often used as barrier materials in guided tissue regeneration strategies and are suitable both to exclude epithelial down-growth and to allow periodontal ligament and alveolar bone cells to repopulate the defect. The problems related to the barrier postoperative collapse can be solved by using a combination of polymeric membranes and grafting materials. Advantages and drawbacks associated with the incorporation of growth factors and nanomaterials in periodontal scaffolds are also discussed, along with the development of multifunctional and multilayer implants. Tissue-engineering strategies based on functionally-graded scaffolds are expected to play an ever-increasing role in the management of periodontal defects.
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Affiliation(s)
| | - Saeid Kargozar
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad 917794-8564, Iran.
| | - Francesco Baino
- Institute of Materials Physics and Engineering, Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy.
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12
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Tovar N, Witek L, Atria P, Sobieraj M, Bowers M, Lopez CD, Cronstein BN, Coelho PG. Form and functional repair of long bone using 3D-printed bioactive scaffolds. J Tissue Eng Regen Med 2018; 12:1986-1999. [PMID: 30044544 DOI: 10.1002/term.2733] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 04/18/2018] [Accepted: 07/17/2018] [Indexed: 01/08/2023]
Abstract
Injuries to the extremities often require resection of necrotic hard tissue. For large-bone defects, autogenous bone grafting is ideal but, similar to all grafting procedures, is subject to limitations. Synthetic biomaterial-driven engineered healing offers an alternative approach. This work focuses on three-dimensional (3D) printing technology of solid-free form fabrication, more specifically robocasting/direct write. The research hypothesizes that a bioactive calcium-phosphate scaffold may successfully regenerate extensive bony defects in vivo and that newly regenerated bone will demonstrate mechanical properties similar to native bone as healing time elapses. Robocasting technology was used in designing and printing customizable scaffolds, composed of 100% beta tri-calcium phosphate (β-TCP), which were used to repair critical sized long-bone defects. Following full thickness segmental defects (~11 mm × full thickness) in the radial diaphysis in New Zealand white rabbits, a custom 3D-printed, 100% β-TCP, scaffold was implanted or left empty (negative control) and allowed to heal over 8, 12, and 24 weeks. Scaffolds and bone, en bloc, were subjected to micro-CT and histological analysis for quantification of bone, scaffold and soft tissue expressed as a function of volume percentage. Additionally, biomechanical testing at two different regions, (a) bone in the scaffold and (b) in native radial bone (control), was conducted to assess the newly regenerated bone for reduced elastic modulus (Er ) and hardness (H) using nanoindentation. Histological analysis showed no signs of any adverse immune response while revealing progressive remodelling of bone within the scaffold along with gradual decrease in 3D-scaffold volume over time. Micro-CT images indicated directional bone ingrowth, with an increase in bone formation over time. Reduced elastic modulus (Er ) data for the newly regenerated bone presented statistically homogenous values analogous to native bone at the three time points, whereas hardness (H) values were equivalent to the native radial bone only at 24 weeks. The negative control samples showed limited healing at 8 weeks. Custom engineered β-TCP scaffolds are biocompatible, resorbable, and can directionally regenerate and remodel bone in a segmental long-bone defect in a rabbit model. Custom designs and fabrication of β-TCP scaffolds for use in other bone defect models warrant further investigation.
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Affiliation(s)
- Nick Tovar
- Department of Biomaterials and Biomimetics, College of Dentistry New York University, New York, New York
| | - Lukasz Witek
- Department of Biomaterials and Biomimetics, College of Dentistry New York University, New York, New York
| | - Pablo Atria
- Biomaterials Department, Universidad de los Andes, Santiago, Chile
| | - Michael Sobieraj
- Department of Orthopaedic Surgery, University of Pennsylvania, Penn Presbyterian Medical Center, Philadelphia, Pennsylvania
| | - Michelle Bowers
- Department of Biomaterials and Biomimetics, College of Dentistry New York University, New York, New York
| | - Christopher D Lopez
- Department of Biomaterials and Biomimetics, College of Dentistry New York University, New York, New York.,Hansjörg Wyss Department of Plastic Surgery, New York University School of Medicine, New York, New York
| | - Bruce N Cronstein
- Department of Medicine, New York University School of Medicine, New York, New York
| | - Paulo G Coelho
- Department of Biomaterials and Biomimetics, College of Dentistry New York University, New York, New York.,Hansjörg Wyss Department of Plastic Surgery, New York University School of Medicine, New York, New York
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Komatsu J, Nagura N, Iwase H, Igarashi M, Ohbayashi O, Nagaoka I, Kaneko K. Effect of intermittent administration of teriparatide on the mechanical and histological changes in bone grafted with β-tricalcium phosphate using a rabbit bone defect model. Exp Ther Med 2018; 15:19-30. [PMID: 29387179 PMCID: PMC5768114 DOI: 10.3892/etm.2017.5424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 02/10/2017] [Indexed: 11/10/2022] Open
Abstract
Grafting β-tricalcium phosphate (TCP) is a well-established method for restoring bone defects; however, there is concern that the mechanical stability of the grafted β-TCP is not maintained during bone translation. Teriparatide has an anabolic effect, stimulating bone formation and increasing bone mineral density for the treatment of osteoporosis. The aim of the present study was to evaluate the effect of intermittent teriparatide treatment on changes in bone grafted with β-TCP using a rabbit bone defect model. Bone defects (5×15 mm) were created in the distal femoral condyle of Japanese white rabbits, and β-TCP granules of two different total porosities were manually grafted. Teriparatide (40 µg/kg) or 0.2% rabbit serum albumin solution as a vehicle control was subcutaneously injected three times per week following the surgery. At 4 or 8 weeks post-surgery, serum samples were obtained and the levels of γ-carboxylated osteocalcin (Gla-OC) were quantified using ELISA. Histomorphometry was also performed using sections of graft sites following staining for tartrate resistant acid phosphatase. Activity and mechanical strength (maximum shear strength, maximum shear stiffness and total energy absorption) were evaluated using an axial push-out load to failure test. Teriparatide treatment significantly increased (P<0.05) the serum levels of Gla-OC, a specific marker for bone formation, suggesting that teriparatide enhances bone formation in β-TCP-grafted rabbits. Furthermore teriparatide increased the degradation of β-TCP by bone remodeling (P<0.05) and promoted the formation of new bone following application of the graft compared with the control group (P<0.01). Furthermore, teriparatide suppressed the reduction in mechanical strength (P<0.05) during bone translation in bone defects grafted with β-TCP. The results of the present study demonstrate that teriparatide is effective in maintaining the mechanical stability of grafted β-TCP, possibly by promoting new bone formation.
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Affiliation(s)
- Jun Komatsu
- Department of Medicine for Motor Organs, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan
| | - Nana Nagura
- Department of Medicine for Motor Organs, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan
| | - Hideaki Iwase
- Department of Bio-Engineering, Juntendo University Institute of Casualty Center, Izunokuni, Shizuoka 410-2295, Japan
| | - Mamoru Igarashi
- Department of Host Defense and Biochemical Research, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan
| | - Osamu Ohbayashi
- Department of Orthopaedic Surgery, Juntendo University Shizuoka Hospital, Izunokuni, Shizuoka 410-2295, Japan
| | - Isao Nagaoka
- Department of Host Defense and Biochemical Research, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan
| | - Kazuo Kaneko
- Department of Medicine for Motor Organs, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan
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Borsari V, Fini M, Giavaresi G, Rimondini L, Chiesa R, Chiusoli L, Giardino R. Sandblasted Titanium Osteointegration in Young, Aged and Ovariectomized Sheep. Int J Artif Organs 2018; 30:163-72. [PMID: 17377911 DOI: 10.1177/039139880703000211] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
To evaluate how aging and estrogen deficiency influence the success rate of Sandblasted Titanium (Ti/SA) implants, the osteointegration of Ti/SA rods was studied in the cortical and trabecular bone of 5 young, 5 aged and 5 ovariectomized (OVX) sheep. The characterization of the host bone by transiliac biopsies of the iliac crest showed a progressive rarefaction of trabecular bone in aged and OVX animals when compared to young ones. A significant reduction, both in cortical and trabecular bone, of the osteointegration rate of Ti/SA rods in the presence of estrogen deficiency compared to young animals was observed, while only a minor reduction was observed in aged animals. These results were confirmed by the pushout test in cortical bone. Bone quality affected the biological response of bone to Ti/SA implants in both trabecular and cortical bone; consequently, strategies to maximize the bone osteogenic properties of osteoporotic patients should be adopted.
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Affiliation(s)
- V Borsari
- Experimental Surgery Department, Research Institute Codivilla-Putti, Rizzoli Orthopedic Institute, Bologna, Italy
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Tanaka T, Komaki H, Chazono M, Kitasato S, Kakuta A, Akiyama S, Marumo K. Basic research and clinical application of beta-tricalcium phosphate (β-TCP). Morphologie 2017; 101:164-172. [PMID: 28462796 DOI: 10.1016/j.morpho.2017.03.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 03/17/2017] [Accepted: 03/20/2017] [Indexed: 06/07/2023]
Abstract
The mechanism of bone substitute resorption involves two processes: solution-mediated and cell-mediated disintegration. In our previous animal studies, the main resorption process of beta-tricalcium phosphate (β-TCP) was considered to be cell-mediated disintegration by TRAP-positive cells. Thus, osteoclast-mediated resorption of β-TCP is important for enabling bone formation. We also report the results of treatment with β-TCP graft in patients since 1989. Two to three weeks after implantation, resorption of β-TCP occurred from the periphery, and then continued toward the center over time. Complete or nearly complete bone healing was achieved in most cases within a few years and was dependent upon the amount of implanted material, the patient's age, and the type of bone (cortical or cancellous). We have previously reported that an injectable complex of β-TCP granules and collagen supplemented with rhFGF-2 enabled cortical bone regeneration of rabbit tibiae. Based on the experimental results, we applied this technique to the patients with femoral and humeral fractures in elderly patients, and obtained bone union.
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Affiliation(s)
- T Tanaka
- Department of Orthopaedic Surgery, NHO Utsunomiya National Hospital, 2160 Shimo-Okamoto, 329-1193 Utsunomiya city, Tochigi, Japan; Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishishinbashi, Minato-ku, Tokyo, Japan.
| | - H Komaki
- Department of Orthopaedic Surgery, NHO Utsunomiya National Hospital, 2160 Shimo-Okamoto, 329-1193 Utsunomiya city, Tochigi, Japan; Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishishinbashi, Minato-ku, Tokyo, Japan
| | - M Chazono
- Department of Orthopaedic Surgery, NHO Utsunomiya National Hospital, 2160 Shimo-Okamoto, 329-1193 Utsunomiya city, Tochigi, Japan; Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishishinbashi, Minato-ku, Tokyo, Japan
| | - S Kitasato
- Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishishinbashi, Minato-ku, Tokyo, Japan
| | - A Kakuta
- Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishishinbashi, Minato-ku, Tokyo, Japan
| | - S Akiyama
- Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishishinbashi, Minato-ku, Tokyo, Japan
| | - K Marumo
- Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishishinbashi, Minato-ku, Tokyo, Japan
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Sheikh Z, Hamdan N, Ikeda Y, Grynpas M, Ganss B, Glogauer M. Natural graft tissues and synthetic biomaterials for periodontal and alveolar bone reconstructive applications: a review. Biomater Res 2017; 21:9. [PMID: 28593053 PMCID: PMC5460509 DOI: 10.1186/s40824-017-0095-5] [Citation(s) in RCA: 186] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 05/16/2017] [Indexed: 12/11/2022] Open
Abstract
Periodontal disease is categorized by the destruction of periodontal tissues. Over the years, there have been several clinical techniques and material options that been investigated for periodontal defect repair/regeneration. The development of improved biomaterials for periodontal tissue engineering has significantly improved the available treatment options and their clinical results. Bone replacement graft materials, barrier membranes, various growth factors and combination of these have been used. The available bone tissue replacement materials commonly used include autografts, allografts, xenografts and alloplasts. These graft materials mostly function as osteogenic, osteoinductive and/or osteoconductive scaffolds. Polymers (natural and synthetic) are more widely used as a barrier material in guided tissue regeneration (GTR) and guided bone regeneration (GBR) applications. They work on the principle of epithelial cell exclusion to allow periodontal ligament and alveolar bone cells to repopulate the defect before the normally faster epithelial cells. However, in an attempt to overcome complications related to the epithelial down-growth and/or collapse of the non-rigid barrier membrane and to maintain space, clinicians commonly use a combination of membranes with hard tissue grafts. This article aims to review various available natural tissues and biomaterial based bone replacement graft and membrane options used in periodontal regeneration applications.
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Affiliation(s)
- Zeeshan Sheikh
- Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Room 221, 150 College Street, Toronto, ON M5S 3E2 Canada
- Lunenfeld-Tanenbaum Research Institute, Mt. Sinai Hospital, 25 Orde St, Toronto, ON M5T 3H7 Canada
| | - Nader Hamdan
- Department of Dental Clinical Sciences, Faculty of Dentistry, Dalhousie University, 5981 University Avenue, PO Box 15000, Halifax, Nova Scotia B3H 4R2 Canada
| | - Yuichi Ikeda
- Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Room 221, 150 College Street, Toronto, ON M5S 3E2 Canada
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo-ku, Tokyo, 113-5810 Japan
| | - Marc Grynpas
- Lunenfeld-Tanenbaum Research Institute, Mt. Sinai Hospital, 25 Orde St, Toronto, ON M5T 3H7 Canada
| | - Bernhard Ganss
- Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Room 221, 150 College Street, Toronto, ON M5S 3E2 Canada
| | - Michael Glogauer
- Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Room 221, 150 College Street, Toronto, ON M5S 3E2 Canada
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Zadegan SA, Abedi A, Jazayeri SB, Bonaki HN, Vaccaro AR, Rahimi-Movaghar V. Clinical Application of Ceramics in Anterior Cervical Discectomy and Fusion: A Review and Update. Global Spine J 2017; 7:343-349. [PMID: 28815162 PMCID: PMC5546682 DOI: 10.1177/2192568217699201] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
STUDY DESIGN Narrative review. OBJECTIVES Anterior cervical discectomy and fusion (ACDF) is a reliable procedure, commonly used for cervical degenerative disc disease. For interbody fusions, autograft was the gold standard for decades; however, limited availability and donor site morbidities have led to a constant search for new materials. Clinically, it has been shown that calcium phosphate ceramics, including hydroxyapatite (HA) and tricalcium phosphate (TCP), are effective as osteoconductive materials and bone grafts. In this review, we present the current findings regarding the use of ceramics in ACDF. METHODS A review of the relevant literature examining the clinical use of ceramics in anterior cervical discectomy and fusion procedures was conducted using PubMed, OVID and Cochrane. RESULT HA, coralline HA, sandwiched HA, TCP, and biphasic calcium phosphate ceramics were used in combination with osteoinductive materials such as bone marrow aspirate and various cages composed of poly-ether-ether-ketone (PEEK), fiber carbon, and titanium. Stand-alone ceramic spacers have been associated with fracture and cracks. Metallic cages such as titanium endure the risk of subsidence and migration. PEEK cages in combination with ceramics were shown to be a suitable substitute for autograft. CONCLUSION None of the discussed options has demonstrated clear superiority over others, although direct comparisons are often difficult due to discrepancies in data collection and study methodologies. Future randomized clinical trials are warranted before definitive conclusions can be drawn.
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Affiliation(s)
- Shayan Abdollah Zadegan
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Aidin Abedi
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Behnam Jazayeri
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Hirbod Nasiri Bonaki
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Vafa Rahimi-Movaghar
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran,Vafa Rahimi-Movaghar, Sina Trauma and Surgery Research Center, Sina General Hospital, Hassan Abad SQ, Imam Khomeini St, Tehran, Iran.
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Sweedy A, Bohner M, van Lenthe GH, Baroud G. A novel method for segmenting and aligning the pre- and post-implantation scaffolds of resorbable calcium-phosphate bone substitutes. Acta Biomater 2017; 54:441-453. [PMID: 28263862 DOI: 10.1016/j.actbio.2017.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 02/19/2017] [Accepted: 03/01/2017] [Indexed: 10/20/2022]
Abstract
Micro-computed tomography (microCT) is commonly used to characterize the three-dimensional structure of bone graft scaffolds before and after implantation in order to assess changes occurring during implantation. The accurate processing of the microCT datasets of explanted β-tricalcium phosphate (β-TCP) scaffolds poses significant challenges because of (a) the overlap in the grey values distribution of ceramic remnants, bone, and soft tissue, and of (b) the resorption of the bone substitute during the implantation. To address those challenges, this article introduces and rigorously validates a new processing technique to accurately distinguish these three phases found in the explanted β-TCP scaffolds. Specifically, the microCT datasets obtained before and after implantation of β-TCP scaffolds were aligned in 3D, and the characteristic grey value distributions of the three phases were extracted, thus allowing for (i) the accurate differentiation between these three phases (ceramic remnants, bone, soft tissue), and additionally for (ii) the localization of the defect site in the post-implantation microCT dataset. Using the similarity matrix, a 94±1% agreement was found between algorithmic results and the visual assessment of 556,800 pixels. Moreover, the comparison of the segmentation results of the same microCT and histology section further confirmed the validity of the present segmentation algorithm. This new technique could lead to a more common use of microCT in analyzing the complex 3D processes and to a better understanding of the biological processes occurring after the implantation of ceramic bone graft substitutes. STATEMENT OF SIGNIFICANCE Calcium-phosphate scaffolds are being increasingly used to repair critical bone defects. Methods for the accurate characterization of the repair process are still lacking. The present study introduced and validated a novel image-processing technique, using micro-computed tomography (mCT) datasets, to investigate material phases present in biopsies. Specifically, the new method combined mCT datasets from the scaffold before and after implantation to access the characteristic data of the ceramic for more accurate analysis of bone biopsies, and as such to better understand the interactions of the scaffold design and the bone repair process.
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Sheikh Z, Zhang YL, Tamimi F, Barralet J. Effect of processing conditions of dicalcium phosphate cements on graft resorption and bone formation. Acta Biomater 2017; 53:526-535. [PMID: 28213100 DOI: 10.1016/j.actbio.2017.02.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 01/21/2017] [Accepted: 02/13/2017] [Indexed: 11/18/2022]
Abstract
Dicalcium phosphate cements (brushite and monetite) are resorbable biomaterials with osteoconductive potential for bone repair and regeneration that have yet to gain widespread commercial use. Brushite can be converted to monetite by heat treatments additionally resulting in various changes in the physico-chemical properties. However, since conversion is most commonly performed using autoclave sterilisation (wet heating), it is uncertain whether the properties observed for monetite as a result of heating brushite under dry conditions affect resorption and bone formation favourably. This study was designed to produce monetite grafts of differing physical form by autoclaving and dry heating (under vacuum) to be compared with brushite biomaterials in an orthotopic pre-clinical implantation model in rabbit for 12weeks. It was observed that monetite grafts had higher porosity and specific surface area than their brushite precursors. The autoclaved monetite grafts had compressive strength reduced by 50% when compared with their brushite precursors. However, the dry heat converted monetite grafts had compressive strength comparable with brushite. Results from in vivo experiments revealed that both types of monetite graft materials resorbed faster than brushite and more bone formation was achieved. There was no significant difference in the amount of bone formed between the two types of monetite grafts. The implanted brushite grafts underwent phase transformation to form hydroxyapatite, which ultimately limited bioresorption. However, this was not observed in both types of monetite grafts. In summary, both autoclaving and dry heating the preset brushite cement grafts resulted in monetite biomaterials which were more resorbable with potential to be investigated and optimized for orthopaedic and maxillofacial bone repair and regeneration applications. STATEMENT OF SIGNIFICANCE We present in this original research article a comparison between dicalcium phosphate cement based grafts (brushite and 2 types of monetite grafts prepared by wet and dry thermal processing) with regards to resorption and bone formation in vivo after orthotopic implantation in rabbit condylar femural region. To the best of our knowledge this is the first in vivo study that reports a comparison resorption and bone formation using brushite and two types of monetite biomaterials. Also, we have included in the manuscript a summary of all the in vivo studies performed on brushite and monetite biomaterials to date. This includes cement composition, physical properties (porosity and surface area), implantation and histomorphometrical details such as animal species, site of implantation, observation period, percentage bone tissue formation and residual graft material. In addition, we calculated the percentage resorption of graft materials based upon various implantation sites and included that into the discussion section. The results of this original research provides greater understanding of the resorption processes of dicalcium phosphate based grafts, allowing preparation of bone substitute materials with more predictable resorption profiles in future.
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Affiliation(s)
- Zeeshan Sheikh
- Faculty of Dentistry, McGill University, 3640, Strathcona Anatomy and Dentistry Building, Rue University, Montreal, Quebec H3A 0C7, Canada.
| | - Yu Ling Zhang
- Faculty of Dentistry, McGill University, 3640, Strathcona Anatomy and Dentistry Building, Rue University, Montreal, Quebec H3A 0C7, Canada.
| | - Faleh Tamimi
- Faculty of Dentistry, McGill University, 3640, Strathcona Anatomy and Dentistry Building, Rue University, Montreal, Quebec H3A 0C7, Canada.
| | - Jake Barralet
- Faculty of Dentistry, McGill University, 3640, Strathcona Anatomy and Dentistry Building, Rue University, Montreal, Quebec H3A 0C7, Canada; Division of Orthopaedics, Department of Surgery, Faculty of Medicine, McGill University, 1650 Cedar Ave, Montreal General Hospital, Montreal, Quebec H3G 1A4, Canada.
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Huang Y, Wang J, Yang F, Shao Y, Zhang X, Dai K. Modification and evaluation of micro-nano structured porous bacterial cellulose scaffold for bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:1034-1041. [PMID: 28415386 DOI: 10.1016/j.msec.2017.02.174] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 12/20/2016] [Accepted: 02/24/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Yan Huang
- Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences (SIBS), Chinese Academy of Sciences (CAS), & Shanghai Jiao Tong University School of Medicine (SJTUSM), 320 Yueyang Road, Shanghai 200031, China
| | - Jing Wang
- Key Laboratory of Advanced Textile Composite Materials of Ministry of Education, Institute of Textile Composite, Tianjin Polytechnic University, Tianjin 300387, China
| | - Fei Yang
- Department of Orthopaedics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | - Yingnan Shao
- Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences (SIBS), Chinese Academy of Sciences (CAS), & Shanghai Jiao Tong University School of Medicine (SJTUSM), 320 Yueyang Road, Shanghai 200031, China
| | - Xiaoling Zhang
- Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences (SIBS), Chinese Academy of Sciences (CAS), & Shanghai Jiao Tong University School of Medicine (SJTUSM), 320 Yueyang Road, Shanghai 200031, China.
| | - Kerong Dai
- Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences (SIBS), Chinese Academy of Sciences (CAS), & Shanghai Jiao Tong University School of Medicine (SJTUSM), 320 Yueyang Road, Shanghai 200031, China.
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Ciapetti G, Di Pompo G, Avnet S, Martini D, Diez-Escudero A, Montufar EB, Ginebra MP, Baldini N. Osteoclast differentiation from human blood precursors on biomimetic calcium-phosphate substrates. Acta Biomater 2017; 50:102-113. [PMID: 27940198 DOI: 10.1016/j.actbio.2016.12.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 11/08/2016] [Accepted: 12/06/2016] [Indexed: 12/25/2022]
Abstract
The design of synthetic bone grafts to foster bone formation is a challenge in regenerative medicine. Understanding the interaction of bone substitutes with osteoclasts is essential, since osteoclasts not only drive a timely resorption of the biomaterial, but also trigger osteoblast activity. In this study, the adhesion and differentiation of human blood-derived osteoclast precursors (OCP) on two different micro-nanostructured biomimetic hydroxyapatite materials consisting in coarse (HA-C) and fine HA (HA-F) crystals, in comparison with sintered stoichiometric HA (sin-HA, reference material), were investigated. Osteoclasts were induced to differentiate by RANKL-containing supernatant using cell/substrate direct and indirect contact systems, and calcium (Ca++) and phosphorus (P5+) in culture medium were measured. We observed that OCP adhered to the experimental surfaces, and that osteoclast-like cells formed at a rate influenced by the micro- and nano-structure of HA, which also modulate extracellular Ca++. Qualitative differences were found between OCP on biomimetic HA-C and HA-F and their counterparts on plastic and sin-HA. On HA-C and HA-F cells shared typical features of mature osteoclasts, i.e. podosomes, multinuclearity, tartrate acid phosphatase (TRAP)-positive staining, and TRAP5b-enzyme release. However, cells were less in number compared to those on plastic or on sin-HA, and they did not express some specific osteoclast markers. In conclusion, blood-derived OCP are able to attach to biomimetic and sintered HA substrates, but their subsequent fusion and resorptive activity are hampered by surface micro-nano-structure. Indirect cultures suggest that fusion of OCP is sensitive to topography and to extracellular calcium. STATEMENT OF SIGNIFICANCE The novelty of the paper is the differentiation of human blood-derived osteoclast precursors, instead of mouse-derived macrophages as used in most studies, directly on biomimetic micro-nano structured HA-based surfaces, as triggered by osteoblast-produced factors (RANKL/OPG), and influenced by chemistry and topography of the substrate(s). Biomimetic HA-surfaces, like those obtained in calcium phosphate cements, are very different from the conventional calcium phosphate ceramics, both in terms of topography and ion exchange. The role of these factors in modulating precursors' differentiation and activity is analysed. The system is closely reproducing the physiological process of attachment of host cells and further maturation to osteoclasts toward resorption of the substrate, which occurs in vivo after filling bone defects with the calcium phosphate grafts.
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Affiliation(s)
- Gabriela Ciapetti
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, Istituto Ortopedico Rizzoli, Bologna, Italy.
| | - Gemma Di Pompo
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, Istituto Ortopedico Rizzoli, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, Italy.
| | - Sofia Avnet
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, Istituto Ortopedico Rizzoli, Bologna, Italy.
| | - Desirée Martini
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Italy.
| | - Anna Diez-Escudero
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia, BarcelonaTech (UPC), Barcelona, Spain.
| | - Edgar B Montufar
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia, BarcelonaTech (UPC), Barcelona, Spain.
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia, BarcelonaTech (UPC), Barcelona, Spain; Institute for Bioengineering of Catalonia, Barcelona, Spain.
| | - Nicola Baldini
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, Istituto Ortopedico Rizzoli, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, Italy.
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Ghosh R, Sarkar R. Synthesis and characterization of sintered beta-tricalcium phosphate: A comparative study on the effect of preparation route. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 67:345-352. [DOI: 10.1016/j.msec.2016.05.029] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 04/11/2016] [Accepted: 05/02/2016] [Indexed: 11/16/2022]
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Chiba S, Anada T, Suzuki K, Saito K, Shiwaku Y, Miyatake N, Baba K, Imaizumi H, Hosaka M, Itoi E, Suzuki O. Effect of resorption rate and osteoconductivity of biodegradable calcium phosphate materials on the acquisition of natural bone strength in the repaired bone. J Biomed Mater Res A 2016; 104:2833-42. [DOI: 10.1002/jbm.a.35828] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 06/24/2016] [Accepted: 07/06/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Shinpei Chiba
- Department of Orthopaedic Surgery; Tohoku University School of Medicine; Sendai 980-8574 Japan
- Division of Craniofacial Function Engineering; Tohoku University Graduate School of Dentistry; Sendai 980-8575 Japan
| | - Takahisa Anada
- Division of Craniofacial Function Engineering; Tohoku University Graduate School of Dentistry; Sendai 980-8575 Japan
| | - Kentaro Suzuki
- Department of Orthopaedic Surgery; Tohoku University School of Medicine; Sendai 980-8574 Japan
| | - Keisuke Saito
- Division of Craniofacial Function Engineering; Tohoku University Graduate School of Dentistry; Sendai 980-8575 Japan
| | - Yukari Shiwaku
- Division of Craniofacial Function Engineering; Tohoku University Graduate School of Dentistry; Sendai 980-8575 Japan
| | | | - Kazuyoshi Baba
- Department of Orthopaedic Surgery; Tohoku University School of Medicine; Sendai 980-8574 Japan
| | - Hideki Imaizumi
- Department of Orthopedic Surgery; Osaki Citizen Hospital; Osaki 989-6183 Japan
| | - Masami Hosaka
- Department of Orthopaedic Surgery; Tohoku University School of Medicine; Sendai 980-8574 Japan
| | - Eiji Itoi
- Department of Orthopaedic Surgery; Tohoku University School of Medicine; Sendai 980-8574 Japan
| | - Osamu Suzuki
- Division of Craniofacial Function Engineering; Tohoku University Graduate School of Dentistry; Sendai 980-8575 Japan
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Dias AG, Lopes MA, Santos JD, Afonso A, Tsuru K, Osaka A, Hayakawa S, Takashima S, Kurabayashi Y. In vivo Performance of Biodegradable Calcium Phosphate Glass Ceramics using the Rabbit Model: Histological and SEM Observation. J Biomater Appl 2016; 20:253-66. [PMID: 16364965 DOI: 10.1177/0885328206052466] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Two MK5 (45CaO-45P2O5-5MgO-5K2O, in mol%) and MT13 (45CaO-37P2O5-5MgO-13TiO2, in mol%) glasses are prepared in the meta- and pyrophosphate regions and crystallized to obtain MK5B and MT13B, respectively. MK5B was obtained by controlled crystallization, and MT13B by powder sintering. As a result of these heat treatment processes, the crystalline phases precipitated in the glassy matrix are KCa(PO3)3, β-Ca(PO3)2, β-Ca2P2O7and Ca4P6O19phases for MK5B and CaTi4(PO4)6, TiP2O7, α- and β-Ca2P2O7phases for MT13B. To assess the in vivo biological behavior of these glass ceramics, a mixed granulometry in the range 250-355 μm and 355-425 μm with a ratio of 1/1 was implanted for 2, 4, and 12 weeks in the tibiae of Japanese white rabbits. The results showed that the in vivo behavior was strongly affected by their solubility. All implanted materials, MK5B and MT13B, and β-tricalcium phosphate (β-TCP) as control material, showed signs of degradation in vivo. However, the levels of degradation were quite different throughout the implantation periods. The highest degradation was observed for MK5B glass ceramic and the lowest for MT13B with β-TCP in-between. All implanted materials allow for new bone formation in the bone defect area. At the longest implantation period (12 weeks), the MT13B and β-TCP materials were almost completely surrounded by new bone tissue, whereas MK5B showed some unfilled spaces. This behavior is discussed in terms of the high degradation observed in previous studies.
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Affiliation(s)
- A G Dias
- Instituto de Engenharia Biomédica, INEB, Laboratório de Biomateriais, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal
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Fan YP, Chen XY, Chen Y, Yang GL, Wang HM, He FM. Positive effect of strontium-oxide layer on the osseointegration of moderately rough titanium surface in non-osteoporotic rabbits. Clin Oral Implants Res 2016; 28:911-919. [PMID: 27283240 DOI: 10.1111/clr.12897] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2016] [Indexed: 12/19/2022]
Abstract
OBJECTIVES To evaluate the effect of strontium-oxide layer on new bone formation and osseointegration of sandblasted large-grit double-acid-etched (SLA) implant. MATERIAL AND METHODS Strontium-oxide layer on the SLA surface was produced by hydrothermal treatment using a Sr-containing solution. The surface topographies, roughness, hardness values, chemical elements and ionic release of SLA and the strontium-containing SLA (Sr-SLA) surface were measured by special instruments separately. Sixty-four SLA and Sr-SLA implants were inserted into the proximal tibiae and femoral condyles of sixteen non-osteoporotic New Zealand white rabbits. The biological effects were evaluated by removal torque (RTQ) testing and histomorphometric analysis after 3 and 6 weeks of implantation. RESULTS The surface characteristics showed Sr-SLA surfaces with dotted nanostructures can release appropriate amount of strontium ions into surrounding tissue till 14 days. In vivo, the Sr-SLA implants presented significantly higher RTQ than SLA implants at 3 and 6 weeks (P < 0.05). The Sr-SLA implants presented higher bone-to-implant contact (BIC) than SLA implants in cortical bone at 3 and 6 weeks (P < 0.05). The bone area was slightly higher for the Sr-SLA implants at 3 and 6 weeks (P > 0.05). CONCLUSIONS The strontium-oxide layer on the SLA surface has the potential to improve implant osseointegration in non-osteoporotic rabbits.
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Affiliation(s)
- Yan-Pin Fan
- Department of Oral Implantology, The Affiliated Stomatology Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiao-Yi Chen
- Department of Oral Implantology, The Affiliated Stomatology Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yun Chen
- Department of oral Implantology, Xiamen Stomatology Hospital, Xiamen, China
| | - Guo-Li Yang
- Department of Oral Implantology, The Affiliated Stomatology Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Hui-Ming Wang
- Department of Oral Implantology, The Affiliated Stomatology Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Fu-Ming He
- Department of Oral Implantology, The Affiliated Stomatology Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Das S, Jhingran R, Bains VK, Madan R, Srivastava R, Rizvi I. Socket preservation by beta-tri-calcium phosphate with collagen compared to platelet-rich fibrin: A clinico-radiographic study. Eur J Dent 2016; 10:264-276. [PMID: 27095909 PMCID: PMC4813448 DOI: 10.4103/1305-7456.178298] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objectives: This study was primarily designed to determine the clinico-radiographic efficacy of platelet-rich fibrin (PRF) and beta-tri-calcium phosphate with collagen (β-TCP-Cl) in preserving extraction sockets. Materials and Methods: For Group I (PRF), residual sockets (n = 15) were filled with autologous PRF obtained from patients' blood; and for Group II (β-TCP-Cl), residual sockets (n = 15) were filled with β-TCP-Cl. For the sockets randomly selected for Group II (β-TCP-Cl), the reshaped Resorbable Tissue Replacement cone was inserted into the socket. Results: Clinically, there was a significantly greater decrease in relative socket depth, but apposition in midcrestal height in Group II (β-TCP-Cl) as compared to Group I (PRF), whereas more decrease in buccolingual width of Group I (PRF) than Group II (β-TCP-Cl) after 6 months. Radiographically, the mean difference in socket height, residual ridge, and width (coronal, middle, and apical third of socket) after 6 months was higher in Group I (PRF) as compared to Group II (β-TCP-Cl). The mean density (in Hounsfield Units) at coronal, middle, and apical third of socket was higher in Group I (PRF) as compared to Group II (β-TCP-Cl). There were statistically significant apposition and resorption for Group I (PRF) whereas nonsignificant resorption and significant apposition for Group II (β-TCP-Cl) in buccal and lingual/palatal cortical plate, respectively, at 6 months on computerized tomography scan. Conclusion: The use of either autologous PRF or β-TCP-Cl was effective in socket preservation. Results obtained from PRF were almost similar to β-TCP-Cl; therefore being autologous, nonimmune, cost-effective, easily procurable regenerative biomaterial, PRF proves to be an insight into the future biofuel for regeneration.
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Affiliation(s)
- Swati Das
- Department of Periodontology, Saraswati Dental College, Lucknow, Uttar Pradesh, India
| | - Rajesh Jhingran
- Department of Periodontology, Saraswati Dental College, Lucknow, Uttar Pradesh, India
| | - Vivek Kumar Bains
- Department of Periodontology, Saraswati Dental College, Lucknow, Uttar Pradesh, India
| | - Rohit Madan
- Department of Periodontology, Saraswati Dental College, Lucknow, Uttar Pradesh, India
| | - Ruchi Srivastava
- Department of Periodontology, Saraswati Dental College, Lucknow, Uttar Pradesh, India
| | - Iram Rizvi
- Department of Periodontology, Saraswati Dental College, Lucknow, Uttar Pradesh, India
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Joshi CP, Dani NH, Khedkar SU. Alveolar ridge preservation using autogenous tooth graft versus beta-tricalcium phosphate alloplast: A randomized, controlled, prospective, clinical pilot study. J Indian Soc Periodontol 2016; 20:429-434. [PMID: 28298826 PMCID: PMC5341319 DOI: 10.4103/0972-124x.188335] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: A randomized, prospective clinical, radiographical, and histological study was conducted to evaluate healing after alveolar ridge preservation technique using two different graft materials, namely, a novel autogenous graft material i. e., autogenous tooth graft (ATG) and beta-tricalcium phosphate (β-TCP) alloplast. Materials and Methods: Fifteen patients undergoing extraction of at least three teeth were selected. Atraumatic extractions were performed. Of the three extraction sockets, one was grafted with ATG, other with β-TCP, and the third was left ungrafted. Cone-beam computed tomography scans were taken immediately after grafting and 4 months postoperatively to check the changes in alveolar crest height and width at all the sites. Three patients in whom implant placement was done after complete healing; bone samples were harvested using a 3 mm diameter trephine during osteotomy preparation from both the ridge preserved sites and studied histologically. Results: There was a statistically significant difference when the changes in width and height of alveolar crest were compared within all the three groups (P < 0.05). Among three sites, ATG-grafted sites showed the most superior results with a minimal reduction in alveolar crest height and width. Histological analysis also showed the same trend with more new bone formation at ATG-grafted sites as compared to β-TCP-grafted sites. Conclusion: Postextraction, ridge preservation leads to more predictable maintenance of alveolar ridge height and width. ATG as compared to β-TCP provided superior results. Based on this, we conclude that ATG material can serve as a better alternative to conventional bone graft materials.
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Affiliation(s)
- Chaitanya Pradeep Joshi
- Department of Periodontics, MGV's KBH Dental College and Hospital, Nashik, Maharashtra, India
| | - Nitin Hemchandra Dani
- Department of Periodontics, MGV's KBH Dental College and Hospital, Nashik, Maharashtra, India
| | - Smita Uday Khedkar
- Department of Microbiology, MGV's KBH Dental College and Hospital, Nashik, Maharashtra, India
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29
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Abstract
Pore and interconnection size are two key structural parameters for bone tissue engineering scaffolds.
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Affiliation(s)
- Xiao Lu
- School of Materials Science and Engineering
- South China University of Technology
- P. R. China
| | - Yingjun Wang
- School of Materials Science and Engineering
- South China University of Technology
- P. R. China
| | - Fangchun Jin
- Department of Pediatric Orthopaedics
- Xin Hua Hospital affiliated to Shanghai Jiao Tong University School of Medicine
- Shanghai 200092
- P. R. China
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30
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Saito K, Anada T, Shiwaku Y, Chiba S, Miyatake N, Suzuki K, Tsuchiya K, Suzuki O. Dose-dependent enhancement of octacalcium phosphate biodegradation with a gelatin matrix during bone regeneration in a rabbit tibial defect model. RSC Adv 2016. [DOI: 10.1039/c6ra07602e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The present study was designed to investigate how the dose of granular octacalcium phosphate in a gelatin matrix affects its bone regenerative and biodegradable properties in a rabbit tibia defect.
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Affiliation(s)
- Keisuke Saito
- Division of Craniofacial Function Engineering
- Tohoku University Graduate School of Dentistry
- Sendai 980-8575
- Japan
| | - Takahisa Anada
- Division of Craniofacial Function Engineering
- Tohoku University Graduate School of Dentistry
- Sendai 980-8575
- Japan
| | - Yukari Shiwaku
- Division of Craniofacial Function Engineering
- Tohoku University Graduate School of Dentistry
- Sendai 980-8575
- Japan
- Liaison Center for Innovative Dentistry
| | - Shinpei Chiba
- Department of Orthopaedic Surgery
- Tohoku University School of Medicine
- Sendai
- Japan
| | | | | | - Kaori Tsuchiya
- Division of Craniofacial Function Engineering
- Tohoku University Graduate School of Dentistry
- Sendai 980-8575
- Japan
| | - Osamu Suzuki
- Division of Craniofacial Function Engineering
- Tohoku University Graduate School of Dentistry
- Sendai 980-8575
- Japan
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Sheikh Z, Abdallah MN, Hanafi AA, Misbahuddin S, Rashid H, Glogauer M. Mechanisms of in Vivo Degradation and Resorption of Calcium Phosphate Based Biomaterials. MATERIALS (BASEL, SWITZERLAND) 2015; 8:7913-7925. [PMID: 28793687 PMCID: PMC5458904 DOI: 10.3390/ma8115430] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 11/09/2015] [Accepted: 11/13/2015] [Indexed: 12/21/2022]
Abstract
Calcium phosphate ceramic materials are extensively used for bone replacement and regeneration in orthopedic, dental, and maxillofacial surgical applications. In order for these biomaterials to work effectively it is imperative that they undergo the process of degradation and resorption in vivo. This allows for the space to be created for the new bone tissue to form and infiltrate within the implanted graft material. Several factors affect the biodegradation and resorption of calcium phosphate materials after implantation. Various cell types are involved in the degradation process by phagocytic mechanisms (monocytes/macrophages, fibroblasts, osteoblasts) or via an acidic mechanism to reduce the micro-environmental pH which results in demineralization of the cement matrix and resorption via osteoclasts. These cells exert their degradation effects directly or indirectly through the cytokine growth factor secretion and their sensitivity and response to these biomolecules. This article discusses the mechanisms of calcium phosphate material degradation in vivo.
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Affiliation(s)
- Zeeshan Sheikh
- Faculty of Dentistry, University of Toronto, Toronto, ON M5S 3E2, Canada.
| | | | | | - Syed Misbahuddin
- Faculty of Dentistry, Department of Dental Public Health, University of Toronto, Toronto, ON M5S 3E2, Canada.
| | - Haroon Rashid
- College of Dentistry, Division of Prosthodontics, Ziauddin University, Karachi 75530, Pakistan.
| | - Michael Glogauer
- Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Toronto, ON M5S 3E2, Canada.
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Zheng R, Park Y, Kim S, Cho J, Heo S, Koak J, Lee S, Park J, Lee J, Kim J. Bone Regeneration of Blood-derived Stem Cells within Dental Implants. J Dent Res 2015; 94:1318-25. [DOI: 10.1177/0022034515590368] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Peripheral blood (PB) is known as a source of mesenchymal stem cells (MSCs), as is bone marrow (BM), and is acquired easily. However, it is difficult to have enough MSCs, and their osteogenic capacity with dental implantations is scarce. Therefore, we characterized peripheral blood mesenchymal stem cells (PBMSCs) cultured on a bone marrow–derived mesenchymal stem cell (BMMSC) natural extracellular matrix (ECM) and demonstrated the osteogenic capability in an experimental chamber implant surgery model in rabbits. We isolated PBMSCs from rabbits by culturing on a natural ECM-coated plate during primary culture. We characterized the PBMSCs using a fluorescence-activated cell scanner, cell proliferation assay, and multiple differentiation assay and compared them with BMMSCs. We also analyzed the osteogenic potential of PBMSCs mixed with hydroxyapatite/tricalcium phosphate (HA/TCP) by transplanting them into immunocompromised mice. Then, the mixture was applied to the canals. After 3 and 6 wk, we analyzed new bone (NB) formation inside the chambers using histological and histomorphometric analyses. The PBMSCs had a similar rate of BrdU-positive cells to BMMSCs, positively expressing CD90 but negative for CD14. The PBMSCs also showed osteogenic, adipogenic, and chondrogenic ability in vitro and osteogenic ability in vivo. Histological and histomorphometric results illustrated that the PBMSC and BMMSC groups showed higher NB than the HA/TCP and defect groups in the upper and lower chambers at 6 wk and in the upper canal at 3 wk; however, there was no difference in NB among all groups in the lower canal at 3 wk. The PBMSCs have characteristics and bone regeneration ability similar to BMMSCs both in vitro and in vivo. ECM was effective for obtaining PBMSCs. Therefore, PBMSCs are a promising source for bone regeneration for clinical use.
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Affiliation(s)
- R.C. Zheng
- Department of Prosthodontics & Dental Research Institute, Seoul National University Dental Hospital, School of Dentistry, Seoul National University, Seoul, South Korea
| | - Y.K. Park
- Department of Dental Research Institute, Brain Korea 21, Seoul National University, Seoul, South Korea
| | - S.K. Kim
- Department of Prosthodontics & Dental Research Institute, Seoul National University Dental Hospital, School of Dentistry, Seoul National University, Seoul, South Korea
| | - J. Cho
- Department of Dental Regenerative Biotechnology, School of Dentistry, Seoul, South Korea
| | - S.J. Heo
- Department of Prosthodontics & Dental Research Institute, Seoul National University Dental Hospital, School of Dentistry, Seoul National University, Seoul, South Korea
| | - J.Y. Koak
- Department of Prosthodontics & Dental Research Institute, Seoul National University Dental Hospital, School of Dentistry, Seoul National University, Seoul, South Korea
| | - S.J. Lee
- Department of Orthodontics & Dental Research Institute, School of Dentistry, Seoul National University, Seoul, South Korea
| | - J.M. Park
- Department of Prosthodontics, Seoul National University Gwanak Dental Hospital, Seoul, South Korea
| | - J.H. Lee
- Department of Prosthodontics, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, South Korea
| | - J.H. Kim
- Department of Prosthodontics & Dental Research Institute, Seoul National University Dental Hospital, School of Dentistry, Seoul National University, Seoul, South Korea
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33
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Silva L, Kim S, Luczyszyn S, Papalexiou V, Giovanini A, Almeida L, Tramontina V. Histological and immunohistochemical evaluation of biphasic calcium phosphate and a mineral trioxide aggregate for bone healing in rat calvaria. Int J Oral Maxillofac Surg 2015; 44:535-42. [DOI: 10.1016/j.ijom.2014.10.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 07/31/2014] [Accepted: 10/03/2014] [Indexed: 11/30/2022]
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Daculsi G. Smart scaffolds: the future of bioceramic. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:154. [PMID: 25779511 DOI: 10.1007/s10856-015-5482-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 02/24/2015] [Indexed: 06/04/2023]
Abstract
The commercial offer for bioceramic bone substitutes is very large, however, the prerequisites for applications in bone reconstruction and tissue engineering, are most often absent. The main criteria being: on the one hand physico-chemical features providing surgeons with an injectable and/or shapeable biomaterial; on the second hand the multi-scale bioactivity leading to osteoconduction and osteoinduction properties. In order to obtain greater suitability according to the nature of the bone defect to be treated, new bone regeneration technologies, "smart scaffolds" must be developed and optimize to support suitable Ortho Biology.
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Affiliation(s)
- Guy Daculsi
- INSERM U791, Laboratory for Osteoarticular and Dental Tissue Engineering, Dental Faculty, Nantes University, Place A. Ricordeau, 44042, Nantes, France,
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35
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Xiao X, Wang W, Liu D, Zhang H, Gao P, Geng L, Yuan Y, Lu J, Wang Z. The promotion of angiogenesis induced by three-dimensional porous beta-tricalcium phosphate scaffold with different interconnection sizes via activation of PI3K/Akt pathways. Sci Rep 2015; 5:9409. [PMID: 25797242 PMCID: PMC4369742 DOI: 10.1038/srep09409] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 03/02/2015] [Indexed: 11/15/2022] Open
Abstract
The porous architectural characteristics of biomaterials play an important role in scaffold revascularization. However, no consensus exists regarding optimal interconnection sizes for vascularization and its scaffold bioperformance with different interconnection sizes. Therefore, a series of disk-type beta-tricalcium phosphates with the same pore sizes and variable interconnections were produced to evaluate how the interconnection size influenced biomaterial vascularization in vitro and in vivo. We incubated human umbilical vein endothelial cells on scaffolds with interconnections of various sizes. Results showed that scaffolds with a 150 μm interconnection size ameliorated endothelial cell function evidenced by promoting cell adhesion and migration, increasing cell proliferation and enhancing expression of platelet-endothelial cell adhesion molecules and vascular endothelial growth factor. In vivo study was performed on rabbit implanted with scaffolds into the bone defect on femoral condyles. Implantation with scaffolds with 150 μm interconnection size significantly improved neovascularization as shown by micro-CT as compared to scaffolds with 100 and 120 μm interconnection sizes. Moreover, the aforementioned positive effects were abolished by blocking PI3K/Akt/eNOS pathway with LY-294002. Our study explicitly demonstrates that the scaffold with 150 μm interconnection size improves neovascularization via the PI3K/Akt pathway and provides a target for biomaterial inner structure modification to attain improved clinical performance in implant vascularization.
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Affiliation(s)
- Xin Xiao
- Department of Orthopedics, Xijing Hospital, Forth Military Medical University, Xi'an, Shaanxi, PR China
| | - Wei Wang
- The State Key Laboratory of Cancer Biology, Department of Immunology, Forth Military Medical University, Xi'an, Shaanxi, PR China
| | - Dong Liu
- Department of Orthopedics, Xijing Hospital, Forth Military Medical University, Xi'an, Shaanxi, PR China
| | - Haoqiang Zhang
- Department of Orthopedics, Xijing Hospital, Forth Military Medical University, Xi'an, Shaanxi, PR China
| | - Peng Gao
- Department of Orthopedics, Xijing Hospital, Forth Military Medical University, Xi'an, Shaanxi, PR China
| | - Lei Geng
- Department of Orthopedics, Xijing Hospital, Forth Military Medical University, Xi'an, Shaanxi, PR China
| | - Yulin Yuan
- Department of Orthopedics, Xijing Hospital, Forth Military Medical University, Xi'an, Shaanxi, PR China
| | - Jianxi Lu
- Shanghai Bio-lu Biomaterials Co., Ltd., Shanghai, P.R. China
| | - Zhen Wang
- Department of Orthopedics, Xijing Hospital, Forth Military Medical University, Xi'an, Shaanxi, PR China
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Sovak G, Gotman I, Weiss A. Osseointegration of Ti-6Al-4V alloy implants with a titanium nitride coating produced by a PIRAC nitriding technique: a long-term time course study in the rat. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2015; 21:179-189. [PMID: 25482093 DOI: 10.1017/s1431927614013634] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This study examined bone tissue responses to Ti-6Al-4V alloy implants with a hard TiN coating applied by an original powder immersion reaction-assisted coating (PIRAC) nitriding method. Progression of implant fixation in the distal epiphysis and within the medullary cavity of the rat femur was evaluated between 3 days and 6 months postimplantation by scanning electron microscopy, oxytetracycline incorporation, and histochemistry. After 6 months, successful osseointegration was achieved in both epiphyseal and diaphyseal sites. Throughout, implant portions located within the epiphysis remained in close contact with bone trabeculae that gradually engulfed the implant forming a bone collar continuous with the trabecular network of the epiphysis. In the diaphysis, woven bone was first formed within the marrow cavity around the implant and later was replaced by a shell of compact bone around the implant. In general, higher osseointegration rates were measured for TiN-coated versus the uncoated implants, both in the epiphysis and in the diaphysis. In conclusion, our findings indicate an excellent long-term biocompatibility of TiN coatings applied by the PIRAC nitriding technique and superior osteoinductive ability in comparison with uncoated Ti-6Al-4V alloy. Such coatings can, therefore, be considered for improving the corrosion and wear resistance of titanium-based orthopedic implants.
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Affiliation(s)
- Guy Sovak
- 1Department of Anatomy,Canadian Memorial Chiropractic College,Toronto,ON M2H 3J1,Canada
| | - Irena Gotman
- 2The Faculty of Materials Engineering,Technion-Israel Institute of Technology,Haifa 31096,Israel
| | - Anna Weiss
- 3Department of Anatomy and Cell Biology, The Bruce Rappaport Faculty of Medicine,Technion-Israel Institute of Technology,Haifa 3200003,Israel
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Yomoda M, Sobajima S, Kasuya A, Neo M. Calcium phosphate cement – gelatin powder composite testing in canine models: Clinical implications for treatment of bone defects. J Biomater Appl 2014; 29:1385-93. [DOI: 10.1177/0885328214565935] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Previous studies have reported the excellent biocompatibility of calcium phosphate cement. However, calcium phosphate cement needs further improvement in order for it to promote bone replacement and eventual bone substitution, as it exhibits slow biodegradability and thus remains in the body over an extended period of time. In this study, we mixed calcium phosphate cement with gelatin powder in order to create a composite containing macropores with interconnectivity, and we then implanted it into canine femurs from the diaphysis to the distal metaphysis. Eight dogs were divided into the sham group, the control (C0) group with 100 wt% calcium phosphate cement, the C10 group with 90 wt% calcium phosphate cement and 10 wt% gelatin powder, and the C15 group with 85 wt% calcium phosphate cement and 15 wt% gelatin powder. Bone replaceability in C10 and C15 at 3 and 6 months was evaluated by radiography, micro-CT, histomorphometry, and mineral apposition rate. New bone formation was seen in C10 and C15 although that was not seen in C0 at six months. The mineral apposition rate was significantly higher in C15 than in C10 in both the diaphysis and metaphysis, and the composite was found to have excellent biodegradability and bone replaceability in canine subjects. As the composite is easily and rapidly prepared, it is likely to become a new bone substitute for use in clinical settings.
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Affiliation(s)
- Mitsuhiro Yomoda
- Department of Orthopedic Surgery, Osaka Medical College, Osaka, Japan
| | | | - Akihiro Kasuya
- Department of Orthopedic Surgery, Osaka Medical College, Osaka, Japan
| | - Masashi Neo
- Department of Orthopedic Surgery, Osaka Medical College, Osaka, Japan
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Onodera J, Kondo E, Omizu N, Ueda D, Yagi T, Yasuda K. Beta-tricalcium phosphate shows superior absorption rate and osteoconductivity compared to hydroxyapatite in open-wedge high tibial osteotomy. Knee Surg Sports Traumatol Arthrosc 2014; 22:2763-70. [PMID: 24045917 DOI: 10.1007/s00167-013-2681-y] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2013] [Accepted: 09/07/2013] [Indexed: 12/21/2022]
Abstract
PURPOSE The purpose of this study was to clinically and radiologically compare the utility, osteoconductivity, and absorbability of hydroxyapatite (HAp) and beta-tricalcium phosphate (TCP) spacers in medial open-wedge high tibial osteotomy (HTO). METHODS Thirty-eight patients underwent medial open-wedge HTO with a locking plate. In the first 19 knees, a HAp spacer was implanted in the opening space (HAp group). In the remaining 19 knees, a TCP spacer was implanted in the same manner (TCP group). All patients underwent clinical and radiological examinations before surgery and at 18 months after surgery. RESULTS Concerning the background factors, there were no statistical differences between the two groups. Post-operatively, the knee score significantly improved in each group. Concerning the post-operative knee alignment and clinical outcome, there was no statistical difference in each parameter between the two groups. Regarding the osteoconductivity, the modified van Hemert's score of the TCP group was significantly higher (p = 0.0009) than that of the HAp group in the most medial osteotomy zone. The absorption rate was significantly greater in the TCP group than in the HAp group (p = 0.00039). CONCLUSIONS The present study demonstrated that a TCP spacer was significantly superior to a HAp spacer concerning osteoconductivity and absorbability at 18 months after medial open-wedge HTO. LEVEL OF EVIDENCE Retrospective comparative study, Level III.
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Affiliation(s)
- Jun Onodera
- Department of Sports Medicine and Joint Surgery, Hokkaido University Graduate School of Medicine, Kita-15 Nishi-7, Kita-ku, Sapporo, 060-8638, Japan
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Sanda M, Shiota M, Fujii M, Kon K, Fujimori T, Kasugai S. Capability of new bone formation with a mixture of hydroxyapatite and beta-tricalcium phosphate granules. Clin Oral Implants Res 2014; 26:1369-74. [PMID: 25156136 DOI: 10.1111/clr.12473] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/24/2014] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The aim of this experimental study was to test a mixture of hydroxyapatite (HA) and beta-tricalcium phosphate (beta-TCP) granules inserted in cranial defects in rabbits, by the evaluation of the hard tissues volume, new bone formation, and residual graft after 4 and 8 weeks. MATERIAL AND METHODS Two defects of 8 mm diameter were created at the calvarial bone of 24 Japanese white rabbits for a total of 48 defects. Four groups were created: defects filled with a mixture of HA and beta-TCP granules (test A), defects filled with HA alone (test B), defects filled with beta-TCP (test C), and empty defects (control). Hard tissues volume (remaining graft + new bone) was evaluated by μ-CT and new bone (NB) and remaining graft (RG) percentages were evaluated by histomorphometry. The animals were sacrificed at 4 or 8 weeks postoperatively. RESULTS The test groups A, B, and C showed a significant higher total volume compared with controls at 4 and 8 weeks (P < 0.05). Regarding the percentages of NB and RG at 4 and 8 weeks, no significant differences were detected (P > 0.05). When comparing 4 and 8 weeks, test group A showed a significant increase in new bone formation. At both 4 and 8 weeks, no group showed significant differences in NB (P > 0.05). At 8 weeks, test group B had more RG than test group A. CONCLUSIONS The novel mixture could maintain the volume of the grafted area compared with that with intervention, and in a similar way compared with HA.
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Affiliation(s)
- Minoru Sanda
- Department of Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Makoto Shiota
- Department of Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Masaki Fujii
- Department of Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kazuhiro Kon
- Department of Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tatsuya Fujimori
- Department of Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shohei Kasugai
- Department of Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, Tokyo, Japan
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Bone formation with deproteinized bovine bone mineral or biphasic calcium phosphate in the presence of autologous platelet lysate: comparative investigation in rabbit. Int J Biomater 2014; 2014:367265. [PMID: 24982676 PMCID: PMC4058493 DOI: 10.1155/2014/367265] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Revised: 05/08/2014] [Accepted: 05/09/2014] [Indexed: 12/20/2022] Open
Abstract
Bone substitutes alone or supplemented with platelet-derived concentrates are widely used to promote bone regeneration but their potency remains controversial. The aim of this study was, therefore, to compare the regenerative potential of preparations containing autologous platelet lysate (APL) and particles of either deproteinized bovine bone mineral (DBBM) or biphasic calcium phosphate (BCP), two bone substitutes with different resorption patterns. Rabbit APL was prepared by freeze-thawing a platelet suspension. Critical-size defects in rabbit femoral condyle were filled with DBBM or DBBM+APL and BCP or BCP+APL. Rabbits were sacrificed after six weeks and newly formed bone and residual implanted material were evaluated using nondemineralized histology and histomorphometry. New bone was observed around particles of all fillers tested. In the defects filled with BCP, the newly formed bone area was greater (70%; P < 0.001) while the residual material area was lower (60%; P < 0.001) than that observed in those filled with DBBM. New bone and residual material area of defects filled with either APL+DBBM or APL+BCP were similar to those observed in those filled with the material alone. In summary, osteoconductivity and resorption of BCP were greater than those of DBBM, while APL associated with either DBBM or BCP did not have an additional benefit.
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Togami W, Sei A, Okada T, Taniwaki T, Fujimoto T, Tahata S, Nagamura K, Nakanishi Y, Mizuta H. Effects of the water-holding capability of polyvinyl formal sponges on osteogenic ability inin vivoexperiments. J Biomed Mater Res B Appl Biomater 2014; 103:188-94. [DOI: 10.1002/jbm.b.33200] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Revised: 04/02/2014] [Accepted: 04/21/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Wakana Togami
- Department of Orthopaedic Surgery; Faculty of Life Sciences, Kumamoto University; Chuo-ku Kumamoto Japan
| | - Akira Sei
- Department of Orthopaedic Surgery; Faculty of Life Sciences, Kumamoto University; Chuo-ku Kumamoto Japan
| | - Tatsuya Okada
- Department of Orthopaedic Surgery; Faculty of Life Sciences, Kumamoto University; Chuo-ku Kumamoto Japan
| | - Takuya Taniwaki
- Department of Orthopaedic Surgery; Faculty of Life Sciences, Kumamoto University; Chuo-ku Kumamoto Japan
| | - Toru Fujimoto
- Department of Orthopaedic Surgery; Faculty of Life Sciences, Kumamoto University; Chuo-ku Kumamoto Japan
| | - Shogo Tahata
- Department of Orthopaedic Surgery; Faculty of Life Sciences, Kumamoto University; Chuo-ku Kumamoto Japan
| | - Kazuma Nagamura
- Department of Advanced Mechanical Systems; Graduate School of Science and Technology, Kumamoto University; Chuo-ku Kumamoto Japan
| | - Yoshitaka Nakanishi
- Department of Advanced Mechanical Systems; Graduate School of Science and Technology, Kumamoto University; Chuo-ku Kumamoto Japan
| | - Hiroshi Mizuta
- Department of Orthopaedic Surgery; Faculty of Life Sciences, Kumamoto University; Chuo-ku Kumamoto Japan
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Shue L, Yufeng Z, Mony U. Biomaterials for periodontal regeneration: a review of ceramics and polymers. BIOMATTER 2014; 2:271-7. [PMID: 23507891 PMCID: PMC3568111 DOI: 10.4161/biom.22948] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Periodontal disease is characterized by the destruction of periodontal tissues. Various methods of regenerative periodontal therapy, including the use of barrier membranes, bone replacement grafts, growth factors and the combination of these procedures have been investigated. The development of biomaterials for tissue engineering has considerably improved the available treatment options above. They fall into two broad classes: ceramics and polymers. The available ceramic-based materials include calcium phosphate (eg, tricalcium phosphate and hydroxyapatite), calcium sulfate and bioactive glass. The bioactive glass bonds to the bone with the formation of a layer of carbonated hydroxyapatite in situ. The natural polymers include modified polysaccharides (eg, chitosan,) and polypeptides (collagen and gelatin). Synthetic polymers [eg, poly(glycolic acid), poly(L-lactic acid)] provide a platform for exhibiting the biomechanical properties of scaffolds in tissue engineering. The materials usually work as osteogenic, osteoconductive and osteoinductive scaffolds. Polymers are more widely used as a barrier material in guided tissue regeneration (GTR). They are shown to exclude epithelial downgrowth and allow periodontal ligament and alveolar bone cells to repopulate the defect. An attempt to overcome the problems related to a collapse of the barrier membrane in GTR or epithelial downgrowth is the use of a combination of barrier membranes and grafting materials. This article reviews various biomaterials including scaffolds and membranes used for periodontal treatment and their impacts on the experimental or clinical management of periodontal defect.
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Affiliation(s)
- Li Shue
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine, Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, PR China
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Han P, Tan M, Zhang S, Ji W, Li J, Zhang X, Zhao C, Zheng Y, Chai Y. Shape and site dependent in vivo degradation of Mg-Zn pins in rabbit femoral condyle. Int J Mol Sci 2014; 15:2959-70. [PMID: 24566138 PMCID: PMC3958893 DOI: 10.3390/ijms15022959] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Revised: 01/02/2014] [Accepted: 01/16/2014] [Indexed: 01/08/2023] Open
Abstract
A type of specially designed pin model of Mg-Zn alloy was implanted into the full thickness of lesions of New Zealand rabbits’ femoral condyles. The recovery progress, outer surface healing and in vivo degradation were characterized by various methods including radiographs, Micro-CT scan with surface rendering, SEM (scanning electron microscope) with EDX (Energy Dispersive X-ray analysis) and so on. The in vivo results suggested that a few but not sufficient bridges for holding force were formed between the bone and the implant if there was a preexisting gap between them. The rapid degradation of the implantation in the condyle would result in the appearance of cavities. Morphological evaluation of the specially designed pins indicated that the cusp was the most vulnerable part during degradation. Furthermore, different implantation sites with distinct components and biological functions can lead to different degradation rates of Mg-Zn alloy. The rate of Mg-Zn alloy decreases in the following order: implantation into soft tissue, less trabecular bone, more trabecular bone, and cortical bone. Because of the complexities of in vivo degradation, it is necessary for the design of biomedical Mg-Zn devices to take into consideration the implantation sites used in clinics.
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Affiliation(s)
- Pei Han
- Orthopaedic Department, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Moyan Tan
- College of Sciences, Shanghai Institute of Technology, Shanghai 201418, China.
| | - Shaoxiang Zhang
- Suzhou Origin Medical Technology Co. Ltd., Suzhou 215513, China.
| | - Weiping Ji
- Orthopaedic Department, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Jianan Li
- State Key Laboratory of Metal Matrix Composites, Institute of Biomedical Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Xiaonong Zhang
- Suzhou Origin Medical Technology Co. Ltd., Suzhou 215513, China.
| | - Changli Zhao
- State Key Laboratory of Metal Matrix Composites, Institute of Biomedical Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Yufeng Zheng
- Department of Advanced Materials and Nanotechnology, College of Engineering, Peking University, Beijing 100871, China.
| | - Yimin Chai
- Orthopaedic Department, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
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Sverzut AT, Rodrigues DC, Lauria A, Armando RS, de Oliveira PT, Moreira RWF. Clinical, radiographic, and histological analyses of calcium phosphate cement as filling material in maxillary sinus lift surgery. Clin Oral Implants Res 2014; 26:633-8. [DOI: 10.1111/clr.12346] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/06/2014] [Indexed: 11/30/2022]
Affiliation(s)
- Alexander T. Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology; School of Dentistry of Ribeirão Preto; University of São Paulo (USP) - Ribeirão Preto; São Paulo Brazil
| | - Danillo C. Rodrigues
- Oral and Maxillofacial Surgery; School of Dentistry of Piracicaba; University of Campinas (UNICAMP); Campinas Brazil
| | - Andrezza Lauria
- Oral and Maxillofacial Surgery; School of Dentistry of Piracicaba; University of Campinas (UNICAMP); Campinas Brazil
| | | | - Paulo T. de Oliveira
- Department of Morphology; Ribeirão Preto Dental School; University of São Paulo (USP) - Ribeirão Preto; São Paulo Brazil
| | - Roger W. F. Moreira
- Oral and Maxillofacial Surgery; School of Dentistry of Piracicaba; University of Campinas (UNICAMP); Campinas Brazil
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Cellular Response of Calcium Phosphate Bone Substitute Containing Hydroxyapatite and Tricalcium Phosphate. IMPLANT DENT 2014; 23:74-8. [DOI: 10.1097/id.0000000000000025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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A Review of Hydroxyapatite Coatings Manufactured by Thermal Spray. SPRINGER SERIES IN BIOMATERIALS SCIENCE AND ENGINEERING 2014. [DOI: 10.1007/978-3-642-53980-0_9] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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47
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Qi X, Li H, Qiao B, Li W, Hao X, Wu J, Su B, Jiang D. Development and characterization of an injectable cement of nano calcium-deficient hydroxyapatite/multi(amino acid) copolymer/calcium sulfate hemihydrate for bone repair. Int J Nanomedicine 2013; 8:4441-52. [PMID: 24293996 PMCID: PMC3839801 DOI: 10.2147/ijn.s54289] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
A novel injectable bone cement was developed by integration of nano calcium-deficient hydroxyapatite/multi(amino acid) copolymer (n-CDHA/MAC) and calcium sulfate hemihydrate (CSH; CaSO4 · 1/2H2O). The structure, setting time, and compressive strength of the cement were investigated. The results showed that the cement with a liquid to powder ratio of 0.8 mL/g exhibited good injectability and appropriate setting time and mechanical properties. In vitro cell studies indicated that MC3T3-E1 cells cultured on the n-CDHA/MAC/CSH composite spread well and showed a good proliferation state. The alkaline phosphatase activity of the MC3T3-E1 cells cultured on the n-CDHA/MAC/CSH composite was significantly higher than that of the cells on pure CSH at 4 and 7 days of culture. The n-CDHA/MAC/CSH cement was implanted into critical size defects of the femoral condyle in rabbits to evaluate its biocompatibility and osteogenesis in vivo. Radiological and histological results indicated that introduction of the n-CDHA/MAC into CSH enhanced new bone formation, and the n-CDHA/MAC/CSH cement exhibited good biocompatibility and degradability. In conclusion, the injectable n-CDHA/MAC/CSH composite cement has a significant clinical advantage over pure CSH cement, and may be a promising bone graft substitute for the treatment of bone defects.
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Affiliation(s)
- Xiaotong Qi
- Department of Orthopedics, The First Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
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Wu TY, Zhou ZB, He ZW, Ren WP, Yu XW, Huang Y. Reinforcement of a new calcium phosphate cement with RGD-chitosan-fiber. J Biomed Mater Res A 2013; 102:68-75. [PMID: 23606446 DOI: 10.1002/jbm.a.34669] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2012] [Accepted: 02/15/2013] [Indexed: 11/06/2022]
Abstract
Calcium phosphate cement (CPC) has been widely used in orthopedic and dental applications. A critical limitation of CPC is low strength and high susceptibility to severe fracture. Surgeons can use it only to reconstruct non-stress bearing bone, raising the need for a tougher new generation of CPC. Fibers have been used as a reinforcement of CPC to improve the strength of a pure CPC scaffold. The RGD peptides (Arg-Gly-Asp) have been used to improve the biocompatibility of the scaffold, via physical adsorption. The purpose of this study was to develop a novel CPC scaffold reinforced by RGD peptide-bearing chitosan fibers (RGD-fiber-CPC). Our data showed that the RGD-fiber-CPC scaffold had an increased flexural strength, and stimulated new bone formation in an animal model. The RGD-fiber-CPC is a novel bone graft substitute in orthopedic surgery.
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Affiliation(s)
- Tian-Yi Wu
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai 200011, China; Department of Orthopaedic Surgery, 2nd Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210011, China
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Rong M, Zhu A, Guo Z, Zhou L, Li S, Lu H, Zhang X. The effects of early osseointegration in different implant sites in rabbit tibias. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:959-965. [PMID: 23430332 DOI: 10.1007/s10856-012-4847-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 12/29/2012] [Indexed: 06/01/2023]
Abstract
The aim of this study was to evaluate the early osseointegration of implants with the same surface treatment in different implant sites in rabbit tibias after 4 weeks. A total of 42 acid-etched implants were implanted in three different sites in the tibia: group A was 2.08 ± 0.18 mm below epiphyseal line; group B was 7.00 ± 0.61 mm below the epiphyseal line; group C was 13.01 ± 1.26 mm below the epiphyseal line. After 4 weeks, the average bone-to-implant contact (BIC) values were as follows: group A, 40.02 ± 4.82 %; group B, 28.20 ± 5.41 %; group C, 20.76 ± 3.10 %. The BIC measurements yielded statistically significant differences among group A, group B and group C (P < 0.01); group A demonstrated the best osseointegration. In the present study, the different implantation sites in the selected 20-mm area demonstrated different early osseointegration; the sites located 7 ± 1.5 mm below the epiphyseal line were best suited for observing the effectiveness of early osseointegration among the three sites. The statistical results of the early osseointegration of implants are therefore affected by the location of the implant sites in this 20-mm area.
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Affiliation(s)
- Mingdeng Rong
- Department of Oral and Maxillofacial Surgery, Guangdong Provincial Stomatological Hospital, Southern Medical University, Guangzhou, China
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Dong J, Cui G, Bi L, Li J, Lei W. The mechanical and biological studies of calcium phosphate cement-fibrin glue for bone reconstruction of rabbit femoral defects. Int J Nanomedicine 2013; 8:1317-24. [PMID: 23576869 PMCID: PMC3617789 DOI: 10.2147/ijn.s42862] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
In order to improve the mechanical and biological properties of calcium phosphate cement (CPC, nanometer-biomaterial) for bone reconstruction in the rabbit femoral defect model, fibrin glue (FG, the natural product, purified from the blood) was introduced at three different ratios. The CPC powder and the FG solution were mixed, respectively, at the powder/liquid (P/L) ratios (g/mL) of 1:1, 3:1, and 5:1 (g/mL), and pure CPC was used as a control. After being implanted into the femoral defect in rabbit, the healing process was evaluated by micro-computed tomography scan, biomechanical testing, and histological examination. By micro-computed tomography analysis, the P/L ratio of 1:1 (g/mL) group indicated the largest quantity of new bone formation at 4 weeks, 8 weeks, and 12 weeks after implantation, respectively. Bone volume per trabecular volume of the 1:1 group was highest in the four groups, which was 1.45% ± 0.42%, 7.35% ± 1.45%, and 29.10% ± 1.67% at 4 weeks, 8 weeks, and 12 weeks after the operation, respectively. In the biomechanical tests, the compressive strength and the elastic modulus of the three CPC–FG groups were much higher than those of the pure CPC group at the determined time point (P < 0.05). The histological evaluation also showed the best osseointegration in the 1:1 group at 4 weeks, 8 weeks, and 12 weeks after the operation, respectively. In the 1:1 group, the bone grew into the pore of the cement in the laminar arrangement and connected with the cement tightly at the 12th week after the operation. This present study indicated that the CPC–FG composite at the P/L ratio of 1:1 (g/mL) stimulated bone regeneration better than any other designed group, which suggested that CPC–FG at the P/L ratio of 1:1 has significant potential as the bioactive material for the treatment of bone defects.
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Affiliation(s)
- Jingjing Dong
- Institute of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
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