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Bittner-Frank M, Reisinger AG, Andriotis OG, Pahr DH, Thurner PJ. Cortical and trabecular mechanical properties in the femoral neck vary differently with changes in bone mineral density. JBMR Plus 2024; 8:ziae049. [PMID: 38736661 PMCID: PMC11088358 DOI: 10.1093/jbmrpl/ziae049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 02/29/2024] [Accepted: 03/24/2024] [Indexed: 05/14/2024] Open
Abstract
Graphical Abstract.
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Affiliation(s)
- Martin Bittner-Frank
- Division of Biomechanics, Karl Landsteiner University of Health Sciences, A-3500 Krems an der Donau, Austria
| | - Andreas G Reisinger
- Division of Biomechanics, Karl Landsteiner University of Health Sciences, A-3500 Krems an der Donau, Austria
| | - Orestis G Andriotis
- Institute of Lightweight Design and Structural Biomechanics, TU Wien, A-1060 Vienna, Austria
| | - Dieter H Pahr
- Division of Biomechanics, Karl Landsteiner University of Health Sciences, A-3500 Krems an der Donau, Austria
- Institute of Lightweight Design and Structural Biomechanics, TU Wien, A-1060 Vienna, Austria
| | - Philipp J Thurner
- Institute of Lightweight Design and Structural Biomechanics, TU Wien, A-1060 Vienna, Austria
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2
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Valenzuela-Fuenzalida JJ, Navarro KLK, Urbina P, Trujillo-Riveros M, Nova-Baeza P, Orellana-Donoso M, Rodriguez-Luengo M, Beccerra Farfan A, Sanchis-Gimeno JA. Prevalence of the Bifid Mandibular Condyle and Its Relationship with Pathologies of the Temporomandibular Joint: A Systematic Review and Meta-Analysis. Diagnostics (Basel) 2023; 13:3282. [PMID: 37892103 PMCID: PMC10606711 DOI: 10.3390/diagnostics13203282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 10/16/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023] Open
Abstract
OBJECTIVE The aim of this study was to describe the prevalence of anatomical variants in the bifid mandibular condyle (BMC) and report its association with temporomandibular joint (TMJ) pathology. METHODS We searched the Medline, Scopus, Web of Science, Google Scholar, CINAHL, and LILACS databases from their inception up to September 2023. Two authors independently performed the search, study selection, and data extraction, and they also assessed the methodological quality with an assurance tool for anatomical studies (AQUA). Finally, the pooled prevalence was estimated using a random effects model. RESULTS A total of 50 studies met the eligibility criteria. Twenty studies, with a total of 88,625 subjects, were included in the meta-analysis. The overall prevalence of the bifid mandibular condyle (BMC) variant was 1% (95% CI = 1% to 2%). CONCLUSIONS The correlation between the BMC and TMJ pathologies has a relatively low prevalence in studies that present a considerable number of subjects. From a clinical point of view, a direct association cannot be made between the presence of the BMC and TMJ pathologies or symptoms.
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Affiliation(s)
- Juan José Valenzuela-Fuenzalida
- Department of Morphology and Function, Faculty of Health and Social Sciences, Universidad de Las Américas, Santiago 8370040, Chile;
- Departamento de Morfología, Facultad de Medicina, Universidad Andrés Bello, Santiago 8370146, Chile; (P.U.); (M.T.-R.); (P.N.-B.); (M.O.-D.); (M.R.-L.)
| | - Kora-lle Keller Navarro
- Department of Morphology and Function, Faculty of Health and Social Sciences, Universidad de Las Américas, Santiago 8370040, Chile;
| | - Pia Urbina
- Departamento de Morfología, Facultad de Medicina, Universidad Andrés Bello, Santiago 8370146, Chile; (P.U.); (M.T.-R.); (P.N.-B.); (M.O.-D.); (M.R.-L.)
| | - Martin Trujillo-Riveros
- Departamento de Morfología, Facultad de Medicina, Universidad Andrés Bello, Santiago 8370146, Chile; (P.U.); (M.T.-R.); (P.N.-B.); (M.O.-D.); (M.R.-L.)
| | - Pablo Nova-Baeza
- Departamento de Morfología, Facultad de Medicina, Universidad Andrés Bello, Santiago 8370146, Chile; (P.U.); (M.T.-R.); (P.N.-B.); (M.O.-D.); (M.R.-L.)
| | - Mathias Orellana-Donoso
- Departamento de Morfología, Facultad de Medicina, Universidad Andrés Bello, Santiago 8370146, Chile; (P.U.); (M.T.-R.); (P.N.-B.); (M.O.-D.); (M.R.-L.)
- Escuela de Medicina, Universidad Finis Terrae, Santiago 7501015, Chile
| | - Macarena Rodriguez-Luengo
- Departamento de Morfología, Facultad de Medicina, Universidad Andrés Bello, Santiago 8370146, Chile; (P.U.); (M.T.-R.); (P.N.-B.); (M.O.-D.); (M.R.-L.)
| | - Alvaro Beccerra Farfan
- Departamento de Ciencias Química y Biológicas, Facultad de Ciencias de la Salud, Universidad Bernardo O’Higgins, Santiago 8370993, Chile;
| | - Juan A. Sanchis-Gimeno
- Department of Human Anatomy and Physiology, Faculty of Health Sciences, University of Johannesburg, Johannesburg 2092, South Africa;
- GIAVAL Research Group, Department of Anatomy and Human Embryology, Faculty of Medicine, University of Valencia, 46001 Valencia, Spain
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Kurz S, Gebhardt M, Grundmann F, Heyde CE, Steinke H. Approach to standardized material characterization of the human lumbopelvic system-Specification, preparation and storage. PLoS One 2023; 18:e0289482. [PMID: 37535581 PMCID: PMC10399898 DOI: 10.1371/journal.pone.0289482] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 07/19/2023] [Indexed: 08/05/2023] Open
Abstract
The complexity of the osseo-ligamentous lumbopelvic system has made it difficult to perform both, the overall preparation as well as specimen harvesting and material testing with a reasonable amount of time and personnel. The logistics of such studies present a hurdle for reproducibility. A structured procedure was developed and proved, which allows all necessary steps to be carried out reproducibly and in a reasonable time. This enables the extraction of 26 soft tissue, 33 trabecular and 32 cortical bone specimens from this anatomical region per cadaver. The integrity of the specimens remains maintained while keeping requirements within manageable limits. The practicability of the intended five-day specimen harvesting and testing procedure could be demonstrated on five test and two pre-test sequences. The intended minimization of physical, biological, and chemical external influences on specimens could be achieved. All protocols, instructions and models of preparation and storage devices are included in the supporting information. The high grade of applicability and reproducibility will lead to better comparability between different biomechanical investigations. This procedure proven on the human pelvis is transferable to other anatomical regions.
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Affiliation(s)
- Sascha Kurz
- ZESBO - Center for Research on Musculoskeletal Systems, Department of Orthopedic Surgery, Traumatology and Plastic Surgery, Faculty of Medicine, Leipzig University, Leipzig, Germany
| | - Marc Gebhardt
- Institute of Experimental Mechanics, Faculty of Civil Engineering, Leipzig University of Applied Sciences, Leipzig, Germany
- Institute of Anatomy, Faculty of Medicine, Leipzig University, Leipzig, Germany
| | - Fanny Grundmann
- Clinic of Trauma, Orthopedic and Septic Surgery, Hospital St. Georg gGmbH, Leipzig, Germany
| | - Christoph-Eckhard Heyde
- ZESBO - Center for Research on Musculoskeletal Systems, Department of Orthopedic Surgery, Traumatology and Plastic Surgery, Faculty of Medicine, Leipzig University, Leipzig, Germany
| | - Hanno Steinke
- Institute of Anatomy, Faculty of Medicine, Leipzig University, Leipzig, Germany
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Shams A, Masaeli E, Ghomi H. Biomimetic surface modification of Three-dimensional printed Polylactic acid scaffolds with custom mechanical properties for bone reconstruction. J Biomater Appl 2023; 37:1042-1053. [PMID: 36565047 DOI: 10.1177/08853282221148043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
3D printing has recently emerged as an innovative fabrication method to construct critical-sized and patient-specific bone scaffolds. The ability to control the bulk geometry of scaffolds in both macro and micro-scales distinguishes this technology from other fabrication methods. In this study, bone tissue-specific scaffolds with different pore geometries were printed from polylactic acid (PLA) filaments at three given infill densities ranging from 20 to 30%. A hybrid hydrogel made of synthetic biphasic calcium phosphate (BCP) and collagen was applied to coat 3D printed well-structured triangular samples with 30% infill density. The coating process changed the surface texture, increased the average strand diameter and average pore size, and decreased the open porosity of samples, all of which increased the mechanical strength of biomimetic-coated scaffolds. According to matrix mineralization staining and osteo-related gene expression, the coating of scaffolds significantly facilitates metabolic activity and osteogenic differentiation of dental pulp-derived mesenchymal stem cells (DPSCs). Taken together, these results indicated that the biomimetic coating is a highly promising approach that could be taken into consideration in the design of a porous scaffold for bone tissue engineering.
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Affiliation(s)
- Amir Shams
- Department of Tissue Engineering, Najafabad Branch, 201564Islamic Azad University, Najafabad, Iran
| | - Elahe Masaeli
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, 438298ACECR, Isfahan, Iran
| | - Hamed Ghomi
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, 201564Islamic Azad University, Najafabad, Iran
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Pei S, Zhou Y, Li Y, Azar T, Wang W, Kim DG, Liu XS. Instrumented nanoindentation in musculoskeletal research. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2022; 176:38-51. [PMID: 35660010 DOI: 10.1016/j.pbiomolbio.2022.05.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 05/24/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
Musculoskeletal tissues, such as bone, cartilage, and muscle, are natural composite materials that are constructed with a hierarchical structure ranging from the cell to tissue level. The component differences and structural complexity, together, require comprehensive multiscale mechanical characterization. In this review, we focus on nanoindentation testing, which is used for nanometer to sub-micrometer length scale mechanical characterization. In the following context, we will summarize studies of nanoindentation in musculoskeletal research, examine the critical factors that affect nanoindentation testing results, and briefly summarize other commonly used techniques that can be conjoined with nanoindentation for synchronized imaging and colocalized characterization.
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Affiliation(s)
- Shaopeng Pei
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, United States
| | - Yilu Zhou
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, United States
| | - Yihan Li
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, United States
| | - Tala Azar
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, United States
| | - Wenzheng Wang
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, United States; Department of Orthopaedic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Do-Gyoon Kim
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH, 43210, USA
| | - X Sherry Liu
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, United States.
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Li F, Xu X, Rong Q, Wang J, Zhang J, Zhou W, Zhang W, Guo C. Three-dimensional radiological anatomy of condyle trabecular bone based on a Volume-of-Interest analysis. Dentomaxillofac Radiol 2022; 51:20220138. [PMID: 35731780 PMCID: PMC10043617 DOI: 10.1259/dmfr.20220138] [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: 04/17/2022] [Revised: 06/13/2022] [Accepted: 06/17/2022] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES Three-dimensional radiological anatomic characteristics of condyle trabeculae was obtained quantitatively based on a volume-of-interest (VOI) analysis. METHODS Nine human mandibular condyle specimens were scanned by micro-computed tomography (micro-CT). A total of 34 VOIs were selected from each condyle specimen, which were divided into six layers and four parts to analyze the morphological characteristics of trabeculae based on cylindrical VOIs with a diameter and height of 2 mm. One-way analysis of variance was used to compare the regional differences of morphological parameters among each layer and part. RESULTS Values for bone mineral density, bone volume/total volume, trabecular thickness, and trabecular bone number were greater in the anterior part compared with the posterior part; and the lateral part was larger than the medial part in the first, second, and third layers, while the medial part was larger in the fourth and fifth layers; these values in the first and sixth layers were much larger, while those in the third and fourth layers were smaller. Bone surface area/bone volume, trabecular spacing, and trabecular bone pattern factor were larger in the posterior part than in the anterior part; and the lateral part was larger than the medial part in the fourth and fifth layers, while the medial part was larger in the first and second layers. CONCLUSIONS The morphological distribution of VOIs was anisotropic within trabecular bone of human mandibular condyles. The upper and lower ends of trabecular bone were much more compact, with higher bone density, trabecular thickness, and trabecular number than in the middle layers.
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Affiliation(s)
| | - Xiangliang Xu
- Department of Oral and Maxillofacial Surgery, National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Peking University School and Hospital of Stomatology, Beijing, China
| | - Qiguo Rong
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, China
| | - Jianwei Wang
- Department of Human Anatomy& Histology and Embryology, Peking University Health Science Center, Beijing, China
| | - Jiwu Zhang
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, China
| | - Wen Zhou
- Department of Central Laboratory, National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Peking University School and Hospital of Stomatology, Beijing, China
| | - Weiguang Zhang
- Department of Human Anatomy& Histology and Embryology, Peking University Health Science Center, Beijing, China
| | - Chuanbin Guo
- Department of Oral and Maxillofacial Surgery, National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Peking University School and Hospital of Stomatology, Beijing, China
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OUP accepted manuscript. Eur J Orthod 2022; 44:513-521. [DOI: 10.1093/ejo/cjac004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Frank M, Reisinger AG, Pahr DH, Thurner PJ. Effects of Osteoporosis on Bone Morphometry and Material Properties of Individual Human Trabeculae in the Femoral Head. JBMR Plus 2021; 5:e10503. [PMID: 34189388 PMCID: PMC8216141 DOI: 10.1002/jbm4.10503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/30/2021] [Accepted: 04/10/2021] [Indexed: 12/02/2022] Open
Abstract
Osteoporosis is the most common bone disease and is conventionally classified as a decrease of total bone mass. Current diagnosis of osteoporosis is based on clinical risk factors and dual energy X‐ray absorptiometry (DEXA) scans, but changes in bone quantity (bone mass) and quality (trabecular structure, material properties, and tissue composition) are not distinguished. Yet, osteoporosis is known to cause a deterioration of the trabecular network, which might be related to changes at the tissue scale—the material properties. The goal of the current study was to use a previously established test method to perform a thorough characterization of the material properties of individual human trabeculae from femoral heads in cyclic tensile tests in a close to physiologic, wet environment. A previously developed rheological model was used to extract elastic, viscous, and plastic aspects of material behavior. Bone morphometry and tissue mineralization were determined with a density calibrated micro‐computed tomography (μCT) set‐up. Osteoporotic trabeculae neither showed a significantly changed material or mechanical behavior nor changes in tissue mineralization, compared with age‐matched healthy controls. However, donors with osteopenia indicated significantly reduced apparent yield strain and elastic work with respect to osteoporosis, suggesting possible initial differences at disease onset. Bone morphometry indicated a lower bone volume to total volume for osteoporotic donors, caused by a smaller trabecular number and a larger trabecular separation. A correlation of age with tissue properties and bone morphometry revealed a similar behavior as in osteoporotic bone. In the range studied, age does affect morphometry but not material properties, except for moderately increased tissue strength in healthy donors and moderately increased hardening exponent in osteoporotic donors. Taken together, the distinct changes of trabecular bone quality in the femoral head caused by osteoporosis and aging could not be linked to suspected relevant changes in material properties or tissue mineralization. © 2021 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Martin Frank
- Institute of Lightweight Design and Structural Biomechanics TU Wien Gumpendorfer Straße 7 Vienna 1060 Austria
| | - Andreas G Reisinger
- Department of Anatomy and Biomechanics, Division Biomechanics Karl Landsteiner University of Health Sciences Dr. Karl-Dorrek-Straße 30 Krems 3500 Austria
| | - Dieter H Pahr
- Institute of Lightweight Design and Structural Biomechanics TU Wien Gumpendorfer Straße 7 Vienna 1060 Austria.,Department of Anatomy and Biomechanics, Division Biomechanics Karl Landsteiner University of Health Sciences Dr. Karl-Dorrek-Straße 30 Krems 3500 Austria
| | - Philipp J Thurner
- Institute of Lightweight Design and Structural Biomechanics TU Wien Gumpendorfer Straße 7 Vienna 1060 Austria
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Liu J, Kim EK, Ni A, Kim YR, Zheng F, Lee BS, Kim DG. Multiscale characterization of ovariectomized rat femur. J Biomech 2021; 122:110462. [PMID: 33915473 DOI: 10.1016/j.jbiomech.2021.110462] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 02/12/2021] [Accepted: 04/12/2021] [Indexed: 10/21/2022]
Abstract
Estrogen deficiency activates bone resorbing cells (osteoclasts) and to a lesser extent bone forming cells (osteoblasts), resulting in a gap between resorption and formation that leads to a net loss of bone. These cell activities alter bone architecture and tissue composition. Thus, the objective of this study is to examine whether multiscale (10-2 to 10-7 m) characterization can provide more integrated information to understand the effects of estrogen deficiency on the fracture risk of bone. This is the first study to examine the effects of estrogen deficiency on multiscale characteristics of the same bone specimen. Sprague-Dawley female rats (6 months old) were obtained for a bilateral ovariectomy (OVX) or a sham operation (sham). Micro-computed tomography of rat femurs provided bone volumetric, mineral density, and morphological parameters. Dynamic mechanical analysis, static elastic and fracture mechanical testing, and nanoindentation were also performed using the same femur. As expected, the current findings indicate that OVX reduces bone quantity (mass and bone mineral density) and quality (morphology, and fracture displacement). Additionally, they demonstrated reductions in amount and heterogeneity of tissue mineral density (TMD) and viscoelastic properties. The current results validate that multiscale characterization for the same bone specimen can provide more comprehensive insights to understand how the bone components contributed to mechanical behavior at different scales.
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Affiliation(s)
- Jie Liu
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH 43210, USA; Division of Restorative Science and Prosthodontics, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - Eun Kyoung Kim
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH 43210, USA
| | - Ai Ni
- Division of Biostatistics, College of Public Health, The Ohio State University, Columbus, OH, USA
| | - Yong-Rak Kim
- Zachry Department of Civil & Environmental Engineering, Texas A&M University, College Station, TX, USA
| | - Fengyuan Zheng
- Division of Restorative Science and Prosthodontics, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - Beth S Lee
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Do-Gyoon Kim
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH 43210, USA.
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Bhatti FUR, Karydis A, Lee BS, Deguchi T, Kim DG, Cho H. Understanding Early-Stage Posttraumatic Osteoarthritis for Future Prospects of Diagnosis: from Knee to Temporomandibular Joint. Curr Osteoporos Rep 2021; 19:166-174. [PMID: 33523424 DOI: 10.1007/s11914-021-00661-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/19/2021] [Indexed: 12/23/2022]
Abstract
PURPOSE OF REVIEW Many mechanical load-bearing joints of the body are prone to posttraumatic osteoarthritis (PTOA), including the knee joint and temporomandibular joint (TMJ). Early detection of PTOA can be beneficial in prevention or alleviating further progression of the disease. RECENT FINDINGS Various mouse models, similar to those used in development of novel diagnosis strategies for early stages of OA, have been proposed to study early PTOA. While many studies have focused on OA and PTOA in the knee joint, early diagnostic methods for OA and PTOA of the TMJ are still not well established. Previously, we showed that fluorescent near-infrared imaging can diagnose inflammation and cartilage damage in mouse models of knee PTOA. Here we propose that the same approach can be used for early diagnosis of TMJ-PTOA. In this review, we present a brief overview of PTOA, application of relevant mouse models, current imaging methods available to examine TMJ-PTOA, and the prospects of near-infrared optical imaging to diagnose early-stage TMJ-OA.
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Affiliation(s)
- Fazal-Ur-Rehman Bhatti
- Department of Orthopaedic Surgery and Biomedical Engineering, University of Tennessee Health Science Center, Research 151, VAMC, 1030 Jefferson Ave, Memphis, TN, 38104 , USA
| | - Anastasios Karydis
- Department of Orthopaedic Surgery and Biomedical Engineering, University of Tennessee Health Science Center, Research 151, VAMC, 1030 Jefferson Ave, Memphis, TN, 38104 , USA
| | - Beth S Lee
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University , Graves Hall, 333 West 10th Avenue, Columbus, OH, 43210, USA
| | - Toru Deguchi
- Division of Orthodontics, College of Dentistry, The Ohio State University, 4088 Postle Hall, 305 W. 12th Ave., Columbus, OH, 43210, USA
| | - Do-Gyoon Kim
- Division of Orthodontics, College of Dentistry, The Ohio State University, 4088 Postle Hall, 305 W. 12th Ave., Columbus, OH, 43210, USA.
| | - Hongsik Cho
- Department of Orthopaedic Surgery and Biomedical Engineering, University of Tennessee Health Science Center, Research 151, VAMC, 1030 Jefferson Ave, Memphis, TN, 38104 , USA.
- Campbell Clinic, Memphis, TN, USA.
- Veterans Affairs Medical Center, Memphis, TN, USA.
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Watanabe K, Lewis S, Guo X, Ni A, Lee BS, Deguchi T, Kim DG. Regional variations of jaw bone characteristics in an ovariectomized rat model. J Mech Behav Biomed Mater 2020; 110:103952. [PMID: 32957244 DOI: 10.1016/j.jmbbm.2020.103952] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 06/21/2020] [Accepted: 06/22/2020] [Indexed: 12/22/2022]
Abstract
Postmenopausal osteoporosis causes severe loss of bone quantity and quality in limb bone but has a lesser effect on jaw bone. Thus, the objective of this study was to examine whether ovariectomy (OVX) and mastication alter the regional variation of jaw bone characteristics. Sprague-Dawley female rats (6 months) were given a bilateral OVX or a sham operation (SHAM) (n = 10 for each group). After 2 months post-OVX, the hemi-mandible from each rat was dissected. A micro-computed tomography based mean, standard deviation (SD), the lower and upper 5th percentile (Low5 and High5) values of tissue mineral density (TMD) histograms were assessed for whole bone (WB), alveolar bone (AB), cortical bone (CB), and trabecular bone (TB) regions. Morphology of TB and periodontal ligament (PDL) was also obtained. Layers of AB were segmented up to 400 μm from the PDL. Mechanical properties at the tissue level were measured by nanoindentation at the same site by a single loading-unloading cycle of indentation in hydration. The AB and TB regions had significantly lower TMD Mean, Low5, and High5 but higher SD than the CB region for both sham and OVX groups (p < 0.01). TMD parameters of the OVX group rapidly increased up to 60 μm away from the PDL and were significantly higher than those of the sham group starting at 280 μm and farther in the CB region (p < 0.05). All values of morphological and nanoindentation parameters were not significantly different between sham and OVX groups (p > 0.06). Estrogen deficiency induced by OVX did not deteriorate bone characteristics including mineral density, morphology, and nanoindentation parameters in rat mandibles. Masticatory loading had an effect on the TMD parameters at the limited region of AB. These results provide insight into why osteoporosis-associated jaw bone fractures are extremely rare.
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Affiliation(s)
- Keiichiro Watanabe
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH, 43210, USA
| | - Samantha Lewis
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH, 43210, USA
| | - Xiaohan Guo
- Division of Biostatistics, College of Public Health, The Ohio State University, Columbus, OH, 43210, USA
| | - Ai Ni
- Division of Biostatistics, College of Public Health, The Ohio State University, Columbus, OH, 43210, USA
| | - Beth S Lee
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, 43210, USA
| | - Toru Deguchi
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH, 43210, USA
| | - Do-Gyoon Kim
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH, 43210, USA.
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Bone regeneration into side openings and hollow inner channel of a dental implant. J Mech Behav Biomed Mater 2020; 101:103416. [DOI: 10.1016/j.jmbbm.2019.103416] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 08/30/2019] [Accepted: 09/02/2019] [Indexed: 11/23/2022]
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Acri TM, Shin K, Seol D, Laird NZ, Song I, Geary SM, Chakka JL, Martin JA, Salem AK. Tissue Engineering for the Temporomandibular Joint. Adv Healthc Mater 2019; 8:e1801236. [PMID: 30556348 DOI: 10.1002/adhm.201801236] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/17/2018] [Indexed: 12/24/2022]
Abstract
Tissue engineering potentially offers new treatments for disorders of the temporomandibular joint which frequently afflict patients. Damage or disease in this area adversely affects masticatory function and speaking, reducing patients' quality of life. Effective treatment options for patients suffering from severe temporomandibular joint disorders are in high demand because surgical options are restricted to removal of damaged tissue or complete replacement of the joint with prosthetics. Tissue engineering approaches for the temporomandibular joint are a promising alternative to the limited clinical treatment options. However, tissue engineering is still a developing field and only in its formative years for the temporomandibular joint. This review outlines the anatomical and physiological characteristics of the temporomandibular joint, clinical management of temporomandibular joint disorder, and current perspectives in the tissue engineering approach for the temporomandibular joint disorder. The tissue engineering perspectives have been categorized according to the primary structures of the temporomandibular joint: the disc, the mandibular condyle, and the glenoid fossa. In each section, contemporary approaches in cellularization, growth factor selection, and scaffold fabrication strategies are reviewed in detail along with their achievements and challenges.
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Affiliation(s)
- Timothy M. Acri
- Department of Pharmaceutical Sciences and Experimental Therapeutics; College of Pharmacy; University of Iowa; Iowa City, Iowa 52242 USA
| | - Kyungsup Shin
- Department of Orthodontics; College of Dentistry and Dental Clinics; University of Iowa; Iowa City, Iowa 52242 USA
| | - Dongrim Seol
- Department of Orthopedics and Rehabilitation; Carver College of Medicine; University of Iowa; Iowa City, Iowa 52242 USA
| | - Noah Z. Laird
- Department of Pharmaceutical Sciences and Experimental Therapeutics; College of Pharmacy; University of Iowa; Iowa City, Iowa 52242 USA
| | - Ino Song
- Department of Orthopedics and Rehabilitation; Carver College of Medicine; University of Iowa; Iowa City, Iowa 52242 USA
| | - Sean M. Geary
- Department of Pharmaceutical Sciences and Experimental Therapeutics; College of Pharmacy; University of Iowa; Iowa City, Iowa 52242 USA
| | - Jaidev L. Chakka
- Department of Pharmaceutical Sciences and Experimental Therapeutics; College of Pharmacy; University of Iowa; Iowa City, Iowa 52242 USA
| | - James A. Martin
- Department of Orthopedics and Rehabilitation; Carver College of Medicine; University of Iowa; Iowa City, Iowa 52242 USA
| | - Aliasger K. Salem
- Department of Pharmaceutical Sciences and Experimental Therapeutics; College of Pharmacy; University of Iowa; Iowa City, Iowa 52242 USA
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Soares PBF, Soares CJ, Limirio PHJO, de Jesus RNR, Dechichi P, Spin-Neto R, Zanetta-Barbosa D. Effect of ionizing radiation after-therapy interval on bone: histomorphometric and biomechanical characteristics. Clin Oral Investig 2018; 23:2785-2793. [PMID: 30368663 DOI: 10.1007/s00784-018-2724-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 10/18/2018] [Indexed: 01/06/2023]
Abstract
OBJECTIVES This study aimed to evaluate the effects of radiotherapy on biomechanical, histomorphometric, and microstructural characteristics of bone, in diverse periods, compared with intact bone tissue. MATERIALS AND METHODS Eighteen adult male New Zealand rabbits were treated with a single radiation dose of 30 Gy. The animals were randomly divided into six groups: NoIr, control group, no radiation, and five irradiated groups sacrificed after 24 h (Ir24h), 7 (Ir7d), 14 (Ir14d), 21 (Ir21d), and 28 (Ir28d) days. After these periods, the animals were sacrificed and their tibias (n = 6) evaluated using three-point bending test to calculate the ultimate force, work to failure, and bone stiffness. Dynamic indentation test was used to quantify Vickers hardness and elasticity modulus of bone tissue. Micro-CT was used to analyze the cortical volume (CtV), cortical thickness (CtTh), and porosity (Ct.Po). Histomorphometric assessment was based on the lacunarity of bone tissue. Data were analyzed using one-way ANOVA and Kruskal-Wallis tests followed by Tukey, Dunnet, and Dunn's post-tests (P < 0.05). RESULTS The ultimate force, work to failure, stiffness, elastic modulus, and Vickers hardness values of irradiated bone were significantly lower that non-irradiated bone. Irradiated bone showed significantly lower CtTh and CtV values and higher CtPo than non-irradiated bone. No significant difference was found for lacunarity between non-irradiated bone and irradiated bone. CONCLUSIONS Ionizing radiation decreases normal anisotropy on microarchitecture of cortical bone, and increases bone fragility compared with non-irradiated bone. Further, these changes were seen after longer periods (e.g., 14 and 21 days), and not immediately after radiation therapy. CLINICAL RELEVANCE The radiotherapy reduces bone mechanical properties and the normal structure of organic and inorganic bone matrix. For studying the protocols to protect the radiotherapy effect using rabbit model, the use of the sacrificing period between 14 and 21 days is recommended.
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Affiliation(s)
- Priscilla Barbosa Ferreira Soares
- Department of Periodontology and Implantology, School of Dentistry, Federal University of Uberlândia, Avenida Pará s/n°, Campus Umuarama, Bloco 4L, Bairro Umuarama, Uberlândia, Minas Gerais, 38400-902, Brazil.
| | - Carlos José Soares
- Department of Operative Dentistry and Dental Materials, School of Dentistry, Federal University of Uberlândia, Avenida Pará s/n°, Campus Umuarama, Bloco 4L, Bairro Umuarama, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Pedro Henrique Justino Oliveira Limirio
- Department of Periodontology and Implantology, School of Dentistry, Federal University of Uberlândia, Avenida Pará s/n°, Campus Umuarama, Bloco 4L, Bairro Umuarama, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Rainde Naiara Rezende de Jesus
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Federal University of Uberlândia, Avenida Pará s/n°, Campus Umuarama, Bloco 4T, Bairro Umuarama, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Paula Dechichi
- Institute of Biomedical Sciences, Federal University of Uberlândia, Avenida Pará 1720, Campus Umuarama, Bloco 2B, Bairro Umuarama, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Rubens Spin-Neto
- Department of Dentistry and Oral Health, Department of Oral Radiology, Aarhus University, Vennelyst Boulevard 9, Building 1613, 130, 8000, Aarhus C, Denmark
| | - Darceny Zanetta-Barbosa
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Federal University of Uberlândia, Avenida Pará s/n°, Campus Umuarama, Bloco 4T, Bairro Umuarama, Uberlândia, Minas Gerais, 38400-902, Brazil
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Wu D, Isaksson P, Ferguson SJ, Persson C. Young's modulus of trabecular bone at the tissue level: A review. Acta Biomater 2018; 78:1-12. [PMID: 30081232 DOI: 10.1016/j.actbio.2018.08.001] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 06/30/2018] [Accepted: 08/02/2018] [Indexed: 01/06/2023]
Abstract
The tissue-level Young's modulus of trabecular bone is important for detailed mechanical analysis of bone and bone-implant mechanical interactions. However, the heterogeneity and small size of the trabecular struts complicate an accurate determination. Methods such as micro-mechanical testing of single trabeculae, ultrasonic testing, and nanoindentation have been used to estimate the trabecular Young's modulus. This review summarizes and classifies the trabecular Young's moduli reported in the literature. Information on species, anatomic site, and test condition of the samples has also been gathered. Advantages and disadvantages of the different methods together with recent developments are discussed, followed by some suggestions for potential improvement for future work. In summary, this review provides a thorough introduction to the approaches used for determining trabecular Young's modulus, highlights important considerations when applying these methods and summarizes the reported Young's modulus for follow-up studies on trabecular properties. STATEMENT OF SIGNIFICANCE The spongy trabecular bone provides mechanical support while maintaining a low weight. A correct measure of its mechanical properties at the tissue level, i.e. at a single-trabecula level, is crucial for analysis of interactions between bone and implants, necessary for understanding e.g. bone healing mechanisms. In this study, we comprehensively summarize the Young's moduli of trabecular bone estimated by currently available methods, and report their dependency on different factors. The critical review of different methods with recent updates is intended to inspire improvements in estimating trabecular Young's modulus. It is strongly suggested to report detailed information on the tested bone to enable statistical analysis in the future.
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Biochemical assessment of nanostructures in human trabecular bone: Proposal of a Raman microspectroscopy based measurements protocol. Injury 2018; 49 Suppl 2:S11-S21. [PMID: 30077357 DOI: 10.1016/j.injury.2018.07.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 07/26/2018] [Accepted: 07/27/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND Improvements to the understating of the compositional contributions of bone mineral and organic components to the competence of trabecular bone are crucial. The purpose of this study was to propose a protocol to study biochemical composition of trabecular bone, based on two combined Raman analysis methodologies. MATERIAL AND METHODS Both cluster and single point Raman mappings were obtained, in order to assess bone degeneration associated with aging, disease, or injury, and to help in the evaluation and development of successful therapies. In this study, human trabecular bone has been analysed throughout a) Raman cluster analysis: bone mineral content, carbonate-to-phosphate ratio (both from the mineral components), the crosslinking and nature/secondary structure of collagen (both from the organic components); and b) Single point Raman spectra, where Raman points related to the minerals and organic components were also obtained, both techniques were employed in spectra attained at 400 to 1700 cm-1. RESULTS Multivariate analysis confirmed: 1) the different spectral composition, 2) the existence of centroids grouped by chemical affinity of the various components of the trabecular bone, and 3) the several traces of centroids and distribution of chemical compositional clusters. CONCLUSIONS This study is important, because it delivers a study protocol that provides molecular variations information in both mineral and collagen structure of trabecular bone tissue. This will enable clinicians to benefit knowing the microstructural differences in the bone subjected to degeneration of their patients.
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Werz SM, Zeichner SJ, Berg BI, Zeilhofer HF, Thieringer F. 3D Printed Surgical Simulation Models as educational tool by maxillofacial surgeons. EUROPEAN JOURNAL OF DENTAL EDUCATION : OFFICIAL JOURNAL OF THE ASSOCIATION FOR DENTAL EDUCATION IN EUROPE 2018; 22:e500-e505. [PMID: 29479802 DOI: 10.1111/eje.12332] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/30/2018] [Indexed: 06/08/2023]
Abstract
INTRODUCTION The aim of this study was to evaluate whether inexpensive 3D models can be suitable to train surgical skills to dental students or oral and maxillofacial surgery residents. Furthermore, we wanted to know which of the most common filament materials, acrylonitrile butadiene styrene (ABS) or polylactic acid (PLA), can better simulate human bone according to surgeons' subjective perceptions. MATERIALS AND METHODS Upper and lower jaw models were produced with common 3D desktop printers, ABS and PLA filament and silicon rubber for soft tissue simulation. Those models were given to 10 blinded, experienced maxillofacial surgeons to perform sinus lift and wisdom teeth extraction. Evaluation was made using a questionnaire. RESULTS Because of slightly different density and filament prices, each silicon-covered model costs between 1.40-1.60 USD (ABS) and 1.80-2.00 USD (PLA) based on 2017 material costs. Ten experienced raters took part in the study. All raters deemed the models suitable for surgical education. No significant differences between ABS and PLA were found, with both having distinct advantages. CONCLUSION The study demonstrated that 3D printing with inexpensive printing filaments is a promising method for training oral and maxillofacial surgery residents or dental students in selected surgical procedures. With a simple and cost-efficient manufacturing process, models of actual patient cases can be produced on a small scale, simulating many kinds of surgical procedures.
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Affiliation(s)
- S M Werz
- Department of Head-, Neck- and Facial Plastic Surgery, Medius Klinik, Ostfildern-Ruit, Germany
- Medical Additive Manufacturing Research Group, Department of Biomedical Engineering, University of Basel, Basel, Switzerland
| | - S J Zeichner
- Medical Additive Manufacturing Research Group, Department of Biomedical Engineering, University of Basel, Basel, Switzerland
- OMF Radiology, Columbia University Medical Center, New York, NY, USA
| | - B-I Berg
- Department of Oral and Cranio-Maxillofacial Surgery, University Hospital Basel, Basel, Switzerland
| | - H-F Zeilhofer
- Medical Additive Manufacturing Research Group, Department of Biomedical Engineering, University of Basel, Basel, Switzerland
- Department of Oral and Cranio-Maxillofacial Surgery, University Hospital Basel, Basel, Switzerland
| | - F Thieringer
- Medical Additive Manufacturing Research Group, Department of Biomedical Engineering, University of Basel, Basel, Switzerland
- Department of Oral and Cranio-Maxillofacial Surgery, University Hospital Basel, Basel, Switzerland
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18
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Kim DG, Jeong YH, McMichael BK, Bähler M, Bodnyk K, Sedlar R, Lee BS. Relationships of bone characteristics in MYO9B deficient femurs. J Mech Behav Biomed Mater 2018; 84:99-107. [PMID: 29754047 DOI: 10.1016/j.jmbbm.2018.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 04/06/2018] [Accepted: 05/02/2018] [Indexed: 12/15/2022]
Abstract
The objective of this study was to examine relationships among a variety of bone characteristics, including volumetric, mineral density, geometric, dynamic mechanical analysis, and static fracture mechanical properties. As MYO9B is an unconventional myosin in bone cells responsible for normal skeletal growth, bone characteristics of wild-type (WT), heterozygous (HET), and MYO9B knockout (KO) mice groups were compared as an animal model to express different bone quantity and quality. Forty-five sex-matched 12-week-old mice were used in this study. After euthanization, femurs were isolated and scanned using microcomputed tomography (micro-CT) to assess bone volumetric, tissue mineral density (TMD), and geometric parameters. Then, a non-destructive dynamic mechanical analysis (DMA) was performed by applying oscillatory bending displacement on the femur. Finally, the same femur was subject to static fracture testing. KO group had significantly lower length, bone mineral density (BMD), bone mass and volume, dynamic and static stiffness, and strength than WT and HET groups (p < 0.019). On the other hand, TMD parameters of KO group were comparable with those of WT group. HET group showed volumetric, geometric, and mechanical properties similar to WT group, but had lower TMD (p < 0.014). Non-destructive micro-CT and DMA parameters had significant positive correlations with strength (p < 0.015) without combined effect of groups and sex on the correlations (p > 0.077). This comprehensive characterization provides a better understanding of interactive behavior between the tissue- and organ-level of the same femur. The current findings elucidate that MYO9B is responsible for controlling bone volume to determine the growth rate and fracture risk of bone.
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Affiliation(s)
- Do-Gyoon Kim
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH 43210, USA.
| | - Yong-Hoon Jeong
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH 43210, USA
| | - Brooke K McMichael
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Martin Bähler
- Institute of Molecular Cell Biology, University of Münster, Germany
| | - Kyle Bodnyk
- Department of Biomedical Engineering, College of Engineering, The Ohio State University, Columbus, OH 43210, USA
| | - Ryan Sedlar
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH 43210, USA
| | - Beth S Lee
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
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Toledano M, Osorio R, Guerado E, Caso E, Osorio E. Nanostructure in the trabecular bone of postmenopausal women: Mechanical and chemical analysis. Injury 2017; 48 Suppl 6:S26-S33. [PMID: 29162238 DOI: 10.1016/s0020-1383(17)30791-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The possibility of diagnosis and prediction of multiple disorders in trabecular bone through nano-biomechanics and chemical analysis are summarized. Improvements to the understating of the compositional contributors of bone mineral and organic components to mechanical competence are crucial. Viscoelastic properties and Raman characterization have been used to evaluate possible alterations of the trabecular bone associated with aging, disease, or injury. In this study, the trabecular bone of postmenopausal women has been analyzed throughout. (a) Nanomechanical characterization, by using nano-DMA: complex modulus, tan δ, loss modulus (E'), and storage modulus (E'); and (b) Raman analysis: relative presence of minerals, carbonate-to-phosphate ratio (both from the mineral components), the crosslinking and nature/secondary structure of collagen (both from the organic components). Complementary nano-morphological studies were done assessing roughness (SRa) and collagen fibrils width, on this trabecular bone. A general idea of the behavior of the viscoelastic performance can be obtained by the Tan δ (E″/E'), that achieved 0.98GPa of damping. 249nm and 0.898μm of SRa roughness and fibrils width were obtained, respectively. The relative presence of minerals, the carbonate-to-phosphate ratio, the crosslinking and the nature/secondary structure of collagen, between 700 and 1700cm-1, were also obtained, in order to propose a study protocol for trabecular bone characterization.
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Affiliation(s)
- Manuel Toledano
- Faculty of Dentistry, Dental Materials Section, University of Granada, Granada, Spain
| | - Raquel Osorio
- Faculty of Dentistry, Dental Materials Section, University of Granada, Granada, Spain.
| | - Enrique Guerado
- Department of Orthopaedic Surgery and Traumatology, Hospital Universitario Costa del Sol, University of Malaga, Malaga, Spain
| | - Enrique Caso
- Research Unit, Hospital Universitario Costa del Sol, University of Malaga, Malaga, Spain
| | - Estrella Osorio
- Faculty of Dentistry, Dental Materials Section, University of Granada, Granada, Spain
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Caso E, Sabiers CC, López-Guillén D, Caso J, Toledano M, Osorio R, Osorio E, Lozano C, Guerado E. Inter-individual gene variants associated with trabecular bone plasticity: A step forward in the personal genomics of degenerative bone disease. Injury 2017; 48 Suppl 6:S12-S25. [PMID: 29162237 DOI: 10.1016/s0020-1383(17)30790-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Continuing tissue destruction in osteoarthrosis is maintained by molecular pathways related to an unbalanced chondrocyte metabolism, the loss of reactive oxygen species (ROS) homeostasis, increase catabolism in a degraded matrix and the limited response to growth factors due to cell aging. Rare deleterious gene variants driving relevant molecular pathways may play a key role in the pathogenesis and genetic control of common diseases and may also influence the common gene variants observed in GWAS. We use molecular profiling technologies based on massive sequencing of genes to interrogate clinical samples for a variety of molecules involved in the pathogenesis pathways of OA and also to derive new insights for drug targeting discovery at an early stage of the disease. By whole-exome sequencing performed in OA patients with extreme phenotypes and in non-related individuals without clinical evidence of OA, the most predominant of the rare gene variants found were non-synonymous single-nucleotide variants (SNV) from exonic DNA regions and with missense functional effects predicting a moderate impact on protein function. A total of 629, 577, and 639 gene variants for the TPF, COA, and ANHNF patients, respectively, were found not to be shared with the 20 non-disease-related individuals. After subtraction of the 306 variants shared among the OA patients, we obtained the individual profiles of 323, 271, and 333 gene variants, for the TPF, COA, and ANHNF patients, respectively. After filtering by the bioinformatics, genetic, and biological criteria established to assess the clinical consequences, comparative analysis of trio sequences using integrative genome visualization tool clearly demonstrate the differences between patients. Analysis of the collagen gene variants identified 78, 20, and 43 genetic collagen variants for the three extreme phenotypes. Rare gene variants encoding for proteins that are less abundant in the trabecular bone matrix, together with those responsible for the control and regulation of bone turnover and plasticity of subchondral trabecular bone, play important roles in OA and help to define the clinical phenotype.
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Affiliation(s)
- Enrique Caso
- Research Unit, Hospital Universitário Costa del Sol, University of Malaga, Marbella, Malaga, Spain.
| | - Cristina C Sabiers
- Research Unit, Hospital Universitário Costa del Sol, University of Malaga, Marbella, Malaga, Spain
| | - Daniel López-Guillén
- Research Unit, Hospital Universitário Costa del Sol, University of Malaga, Marbella, Malaga, Spain
| | - Jaime Caso
- School of Engineering of Information and Communication Technologies, University of Granada, Granada, Spain
| | - Manuel Toledano
- Faculty of Dentistry, Dental Materials Section, University of Granada, Granada, Spain
| | - Raquel Osorio
- Faculty of Dentistry, Dental Materials Section, University of Granada, Granada, Spain
| | - Estrella Osorio
- Faculty of Dentistry, Dental Materials Section, University of Granada, Granada, Spain
| | - Carmen Lozano
- Department of Radiology, Hospital Universitario Costa del Sol, University of Malaga, Malaga, Spain
| | - Enrique Guerado
- Department of Orthopaedic Surgery and Traumatology, Hospital Universitario Costa del Sol, University of Malaga, Malaga, Spain
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Ramos A, Nyashin Y, Mesnard M. Influences of geometrical and mechanical properties of bone tissues in mandible behaviour - experimental and numerical predictions. Comput Methods Biomech Biomed Engin 2017; 20:1004-1014. [PMID: 28446031 DOI: 10.1080/10255842.2017.1322072] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The properties and geometry of bone in the mandible play a key role in mandible behaviour during a person's lifetime, and attention needs to be paid to the influence of bone properties. We analysed the effect of bone geometry, size and bone properties in mandible behaviour, experimenting on cadaveric mandibles and FE models. The study was developed using the geometry of a cadaveric mandible without teeth. Three models of cadaveric condyles were experimentally tested with instrumented with four rosettes, and a condyle reaction of 300 N. Four finite element models were considered to validate the experiments and analyse mandible behaviour. One numeric model was simulated with 10 muscles in a quasi-static condition. The experimental results present different condyle stiffness's, of 448, 215 and 254 N/mm. The values presented in the rosettes are influenced by bone geometry and bone thickness; maximum value was -600 με in rosette #4, and the maximum strain difference between mandibles was 111%. The numerical results show that bone density decreases and strain distribution increases in the thinner mandible regions. Nevertheless, the global behaviour of the structure remains similar, but presents different strain magnitudes. The study shows the need to take into account bone characteristics and their evolutions in order to improve implant design and fixation throughout the patient life. The change in bone stiffness promotes a change in maximum strain distribution with same global behaviour.
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Affiliation(s)
- A Ramos
- a Biomechanics Research Group, Department of Mechanical Engineering , University of Aveiro , Aveiro , Portugal
| | - Yi Nyashin
- b Department of Theoretical Mechanics , Perm State Technical University , Perm , Russia
| | - M Mesnard
- c Institut de Mécanique et d'Ingénierie, CNRS UMR 5295 , University de Bordeaux , Talence , France
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22
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Lee J, Perikamana SKM, Ahmad T, Lee MS, Yang HS, Kim DG, Kim K, Kwon B, Shin H. Controlled Retention of BMP-2-Derived Peptide on Nanofibers Based on Mussel-Inspired Adhesion for Bone Formation. Tissue Eng Part A 2017; 23:323-334. [DOI: 10.1089/ten.tea.2016.0363] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Jinkyu Lee
- Department of Bioengineering, Institute for Bioengineering and Biopharmaceutical Research, Hanyang University, Seoul, Republic of Korea
- BK21 Plus Future Biopharmaceutical Human Resources Training and Research Team, Hanyang University, Seoul, Republic of Korea
| | - Sajeesh Kumar Madhurakkat Perikamana
- Department of Bioengineering, Institute for Bioengineering and Biopharmaceutical Research, Hanyang University, Seoul, Republic of Korea
- BK21 Plus Future Biopharmaceutical Human Resources Training and Research Team, Hanyang University, Seoul, Republic of Korea
| | - Taufiq Ahmad
- Department of Bioengineering, Institute for Bioengineering and Biopharmaceutical Research, Hanyang University, Seoul, Republic of Korea
- BK21 Plus Future Biopharmaceutical Human Resources Training and Research Team, Hanyang University, Seoul, Republic of Korea
| | - Min Suk Lee
- Department of Nanobio Medical Science, Dankook University, Chonan, Republic of Korea
| | - Hee Seok Yang
- Department of Nanobio Medical Science, Dankook University, Chonan, Republic of Korea
| | - Do-Gyoon Kim
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - Kyobum Kim
- Division of Bioengineering, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Republic of Korea
| | - Bosun Kwon
- Wooridul Life Sciences & WINNOVA Research Institute, Seoul, Republic of Korea
| | - Heungsoo Shin
- Department of Bioengineering, Institute for Bioengineering and Biopharmaceutical Research, Hanyang University, Seoul, Republic of Korea
- BK21 Plus Future Biopharmaceutical Human Resources Training and Research Team, Hanyang University, Seoul, Republic of Korea
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23
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Kim DG, Haghighi A, Kwon HJ, Coogan JS, Nicolella DP, Johnson TB, Kim HD, Kim N, Agnew AM. Sex dependent mechanical properties of the human mandibular condyle. J Mech Behav Biomed Mater 2017; 71:184-191. [PMID: 28342326 DOI: 10.1016/j.jmbbm.2017.03.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 02/24/2017] [Accepted: 03/14/2017] [Indexed: 01/14/2023]
Abstract
The mandibular condyle consists of articular cartilage and subchondral bone that play an important role in bearing loads at the temporomandibular joint (TMJ) during static occlusion and dynamic mastication. The objective of the current study was to examine effects of sex and cartilage on 1) static and dynamic mechanical analysis (DMA) based dynamic energy storage and dissipation for the cartilage-subchondral bone construct of the human mandibular condyle, and 2) their correlations with the tissue mineral density and trabecular morphological parameters of subchondral bone. Cartilage-subchondral bone constructs were obtained from 16 individual human cadavers (9 males, 7 females, 79.00±13.10 years). After scanning with micro-computed tomography, the specimens were subjected to a non-destructive compressive static loading up to 7N and DMA using a cyclic loading profile (-5±2N at 2Hz). After removing the cartilage from the same specimen, the series of loading experiments were repeated. Static stiffness (K) and energy dissipation (W), and dynamic storage (K'), loss (K'') stiffness, and energy dissipation (tan δ) were assessed. Gray values, which are proportional to degree of bone mineralization, and trabecular morphological parameters of the subchondral bone were also measured. After removal of the cartilage, static energy dissipation significantly decreased (p<0.009) but dynamic energy dissipation was not influenced (p>0.064). Many subchondral bone properties were significantly correlated with the overall mechanical behavior of the cartilage-subchondral bone constructs for males (p<0.047) but not females (p>0.054). However, after removal of cartilage from the constructs, all of the significant correlations were no longer found (p>0.057). The current findings indicate that the subchondral bone is responsible for bearing static and dynamic loading in males but not in females. This result indicates that the female condyle may have a mechanically disadvantageous TMJ loading environment.
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Affiliation(s)
- Do-Gyoon Kim
- Division of Orthodontics, College of Dentistry, The Ohio State University, 4088 Postle Hall 305 W. 12th Ave, Columbus, OH 43210, USA.
| | - Arman Haghighi
- Division of Orthodontics, College of Dentistry, The Ohio State University, 4088 Postle Hall 305 W. 12th Ave, Columbus, OH 43210, USA
| | - Hyun-Jung Kwon
- Division of Orthodontics, College of Dentistry, The Ohio State University, 4088 Postle Hall 305 W. 12th Ave, Columbus, OH 43210, USA
| | - Jessica S Coogan
- Musculoskeletal Biomechanics, Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238, USA
| | - Daniel P Nicolella
- Musculoskeletal Biomechanics, Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238, USA
| | - Trenton B Johnson
- Division of Orthodontics, College of Dentistry, The Ohio State University, 4088 Postle Hall 305 W. 12th Ave, Columbus, OH 43210, USA
| | - Hwan D Kim
- Division of Orthodontics, College of Dentistry, The Ohio State University, 4088 Postle Hall 305 W. 12th Ave, Columbus, OH 43210, USA
| | - Nari Kim
- Division of Orthodontics, College of Dentistry, The Ohio State University, 4088 Postle Hall 305 W. 12th Ave, Columbus, OH 43210, USA
| | - Amanda M Agnew
- Injury Biomechanics Research Center, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
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24
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Pawlikowski M, Skalski K, Bańczerowski J, Makuch A, Jankowski K. Stress–strain characteristic of human trabecular bone based on depth sensing indentation measurements. Biocybern Biomed Eng 2017. [DOI: 10.1016/j.bbe.2017.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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England GM, Moon ES, Roth J, Deguchi T, Firestone AR, Beck FM, Kim DG. Conditions and calibration to obtain comparable grey values between different clinical cone beam computed tomography scanners. Dentomaxillofac Radiol 2016; 46:20160322. [PMID: 27844482 DOI: 10.1259/dmfr.20160322] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVES The objective of the present study was to examine the grey value parameters and their magnitudes produced by CBCT and whether they are influenced by different scanners with various scanning conditions. METHODS An ATOM Max dental and diagnostic artificial head was scanned by two CBCT scanners (Planmeca and iCAT). Under full field of view with normal dose and ultralow-dose (ULD) conditions, the Planmeca scanner was examined for three scanning resolutions (200, 400, and 600 micron voxel sizes) and the iCAT scanner was tested for four scanning resolutions (200, 250, 300 and 400 micron voxel sizes). After 9 weeks, the artificial head was scanned again by the Planmeca scanner with the same scanning conditions. In addition, two hydroxyapatite phantoms (1220 and 1540 mg cm-3) were adhered on the artificial head and scanned using normal and ULD scanning conditions of 400 micron voxel size with both scanners. The grey value histogram of each region, which is proportional to the bone mineral density (BMD) histogram, was utilized to determine grey value distribution parameters and compare scanners (ANOVA, p < 0.05). RESULTS The different scanning conditions and the bilateral locations of the artificial head did not have significant effects on measurements of the grey value parameters (p > 0.436) with excellent repeatability. However, the iCAT scanner produced significantly different grey values from the Planmeca scanner (p < 0.001). CONCLUSIONS CBCT can assess BMD, while calibration of absolute measures is necessary to obtain comparable values between different scanners that are currently used to assess oral bone quantity and quality.
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Affiliation(s)
- Gregory M England
- 1 Division of Orthodontics, College of Dentistry, Ohio State University, Columbus, OH, USA
| | - Eun-Sang Moon
- 1 Division of Orthodontics, College of Dentistry, Ohio State University, Columbus, OH, USA
| | - Jordan Roth
- 1 Division of Orthodontics, College of Dentistry, Ohio State University, Columbus, OH, USA
| | - Toru Deguchi
- 1 Division of Orthodontics, College of Dentistry, Ohio State University, Columbus, OH, USA
| | - Allen R Firestone
- 1 Division of Orthodontics, College of Dentistry, Ohio State University, Columbus, OH, USA
| | - F Michael Beck
- 2 Division of Oral Bioscience, College of Dentistry, Ohio State University, Columbus, OH, USA
| | - Do-Gyoon Kim
- 1 Division of Orthodontics, College of Dentistry, Ohio State University, Columbus, OH, USA
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26
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Yu W, Bajorek J, Jayade S, Miele A, Mirza J, Rogado S, Sundararajan A, Faig J, Ferrage L, Uhrich KE. Salicylic acid (SA)-eluting bone regeneration scaffolds with interconnected porosity and local and sustained SA release. J Biomed Mater Res A 2016; 105:311-318. [DOI: 10.1002/jbm.a.35904] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 09/11/2016] [Accepted: 09/14/2016] [Indexed: 01/12/2023]
Affiliation(s)
- Weiling Yu
- Department of Biomedical Engineering; Rutgers, The State University of New Jersey; Piscataway New Jersey 08854
| | - Jennifer Bajorek
- Department of Biomedical Engineering; Rutgers, The State University of New Jersey; Piscataway New Jersey 08854
| | - Sayeli Jayade
- Department of Biomedical Engineering; Rutgers, The State University of New Jersey; Piscataway New Jersey 08854
| | - Alyssa Miele
- Department of Biomedical Engineering; Rutgers, The State University of New Jersey; Piscataway New Jersey 08854
| | - Javad Mirza
- Department of Biomedical Engineering; Rutgers, The State University of New Jersey; Piscataway New Jersey 08854
| | - Sarah Rogado
- Department of Pharmaceutics, Ernest Mario School of Pharmacy; Rutgers, The State University of New Jersey; Piscataway New Jersey 08854
| | - Aravind Sundararajan
- Department of Biomedical Engineering; Rutgers, The State University of New Jersey; Piscataway New Jersey 08854
| | - Jonathan Faig
- Department of Chemistry and Chemical Biology; Rutgers, The State University of New Jersey; Piscataway New Jersey 08854
| | - Loïc Ferrage
- Department of Materials Science Engineering; ENSIACET; 31030 Toulouse France
| | - Kathryn E. Uhrich
- Department of Chemistry and Chemical Biology; Rutgers, The State University of New Jersey; Piscataway New Jersey 08854
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