An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
... This study aimed at evaluating the mandibular condyle position changes before and after bimaxillary orthognathic surgery in class II and III malocclusion patients. CBCT scans from patients who underwent bimaxillary orthognathic surgery were analyzed: Le Fort I osteotomy and bilateral sagittal split osteotomy (BSSO). Both condyles were independently assessed for their largest anterior and posterior ...
... Effective clinical methods for large bone defects are not yet available on account of the complex intrinsic structure and mechanical characteristics of natural bone tissue. It remains a challenge to restore bone damage to its original form by tissue engineering. With the continuous development of three-dimensional (3D) printing in recent years, the emergence of new technical supports and material ...
... Korean medicine originated in ancient and prehistoric times, as evidenced by the discovery of stone and bone needles in the North Hamgyeong Province, dating back to 3000 BC [...] ...
Quinten Thijssen; Kim Cornelis; Rand Alkaissy; Janis Locs; Lana Van Damme; David Schaubroeck; Robin Willaert; Sarah Snelling; Pierre-Alexis Mouthuy; Sandra Van Vlierberghe
bones, etc ; crosslinking; hydroxyapatite; osteoblasts; polymerization; Show all 5 Subjects
Abstract:
... Acrylate-based photo-cross-linked poly(ε-caprolactone) (PCL) tends to show low elongation and strength. Incorporation of osteo-inductive hydroxyapatite (HAp) further enhances this effect, which limits its applicability in bone tissue engineering. To overcome this, the thiol–ene click reaction is introduced for the first time in order to photo-cross-link PCL composites with 0, 10, 20, and 30 wt % H ...
bones, etc ; alloys; hydroxyapatite; prostheses; titanium; Show all 5 Subjects
Abstract:
... Biologically fixed arthroplasty is limited in its development by the long postoperative recovery time and the low quality of solidity of the fixed interface in the short postoperative period. Therefore, fretting stimulation is used to accelerate the combination between bone tissue and the biological fixation interface of artificial joint prostheses. The effects of different compression loads and t ...
... The results of an analysis of manifestations and combinations of urotomy and regeneration in the caudal part of the vertebral column in agamid lizards of the subfamily Draconinae Fitzinger, 1826 are considered based on the material stored in museums around the world. The methods of X-ray analysis and computed microtomography (CT) were used based on our own data and the data on skeletal morphology ...
bones, etc ; barium titanate; cell growth; electrodes; energy; porosity; Show all 6 Subjects
Abstract:
... Dedicated hierarchical structuring of functional ceramics can be used to shift the limits of functionality. This work presents the manufacturing of highly open porous, hierarchically structured barium titanate ceramics with 3-3 connectivity via direct ink writing of capillary suspension-type inks. The pore size of the printed struts (∼1 μm) is combined with a printed mesostructure (∼100 μm). The s ...
Andrea A. R. Olmos; Aureliano Fertuzinhos; Teresa D. Campos; Isabel R. Dias; Carlos A. Viegas; Fábio A. M. Pereira; Nguyễn T. Quyền; Marcelo F. S. F. de Moura; Andrea Zille; Nuno Dourado
bones, etc ; fracture fixation; mathematical models; mechanical properties; neutralization; Show all 5 Subjects
Abstract:
... This study reports the numerical and experimental characterization of a standard immobilization system currently being used to treat simple oblique bone fractures of femoral diaphyses. The procedure focuses on the assessment of the mechanical behavior of a bone stabilized with a dynamic compression plate (DCP) in a neutralization function, associated to a lag screw, fastened with surgical screws. ...
bones, etc ; blood; calcium phosphates; cell proliferation; coculture; gelatin; Show all 6 Subjects
Abstract:
... 3D-printed biphasic calcium phosphate (BCP) scaffolds show great clinical application potential in bone tissue engineering; however, vascularization of the scaffold is a crucial step for bone regeneration and is still difficult to be controlled. To enhance scaffold vascularization, a novel bioactive scaffold loaded with platelet lysate/gelatin methacrylate (PL/GelMA) in a BCP scaffold was proposed ...
bones, etc ; angiogenesis; biocompatibility; hydrogels; immune response; mineralization; osteoblasts; Show all 7 Subjects
Abstract:
... Hydrogels can be designed as scaffolds in bone tissue engineering for more efficient healing of bone defects. Bone regeneration hydrogels have attracted extensive attention because of their good biocompatibility and excellent ability in promoting bone regeneration. This review will introduce the methods of bone regeneration hydrogels in the treatment of bone defects. Namely, promoting differentiat ...
bones, etc ; angiogenesis; biocompatible materials; blood; bone mineralization; hydrogels; manufacturing; Show all 7 Subjects
Abstract:
... In large bone defects, inadequate vascularization within the engineered constructs has been a major challenge in developing clinically impactful products. It is fairly determined that bone tissues and blood vessels are established concurrently throughout tissue repairs after an injury. Thus, the coupling of angiogenesis–osteogenesis is an essential course of action in bone tissue restoration. The ...
bones, etc ; alginates; cartilage; gelatin; glass; microstructure; polymers; porosity; titanium; Show all 9 Subjects
Abstract:
... In this research work, the fabrication of biphasic composite implants has been investigated. Porous, commercially available pure Ti (50 vol % porosity and pore distributions of 100–200, 250–355, and 355–500 μm) has been used as a cortical bone replacement, while different composites based on a polymer blend (gelatin and alginate) and bioactive glass (BG) 45S5 have been applied as a soft layer for ...
bones, etc ; bone formation; calcium; calcium phosphates; chitosan; humans; immunohistochemistry; Show all 7 Subjects
Abstract:
... Ionic substitutions are a promising strategy to enhance the biological performance of calcium phosphates (CaP) and composite materials for bone tissue engineering applications. However, systematic studies have not been performed on multi-substituted organic/inorganic scaffolds. In this work, highly porous composite scaffolds based on CaPs substituted with Sr²⁺, Mg²⁺, Zn²⁺ and SeO₃²⁻ ions, and chit ...
bones, etc ; bone formation; carboxymethylcellulose; osteoblasts; ramie; sodium monochloroacetate; ultrasonics; Show all 7 Subjects
Abstract:
... In this research, the pharmaceutical used carboxymethyl cellulose (CMC) was successfully synthesized by ramie fiber and sodium monochloroacetate. Meanwhile, this study focused on the proliferation and differentiation of osteoblast which was stimulated by ramie based CMC. Additionally, the synergistic effects between CMC and Low-intensity pulsed ultrasound (LIPUS) for the proliferation and differen ...
bones, etc ; cost effectiveness; half life; ribonucleases; therapeutics; tissue repair; Show all 6 Subjects
Abstract:
... The therapeutics for bone tissue regeneration requires constant advancements owing to the steady increase in the number of patients suffering from bone-related disorders, and also to find efficient and cost-effective treatment modalities. One of the major advancements in the field of therapeutics is the development of mRNAs. mRNAs, which have been extensively tested for the vaccines, could be very ...
bones, etc ; alloys; bone formation; rats; strength (mechanics); tantalum; titanium; Show all 7 Subjects
Abstract:
... Porous scaffolds have long been regarded as optimal substitute for bone tissue repairing. In order to explore the influence of unit cell structure and inherent material characteristics on the porous scaffolds in terms of mechanical and biological performance, selective laser melting (SLM) technology was used to fabricate porous tantalum (Ta) and titanium alloy (Ti6Al4V) with diamond (Di) or rhombi ...
bones, etc ; biocompatible materials; bone formation; cytoskeleton; electrophysiology; integrins; microelectrodes; topology; Show all 8 Subjects
Abstract:
... Piezoelectric poly(vinylidene fluoride-trifluoroethylene) has demonstrated an ability to promote osteogenesis, and biomaterials with a chirality-patterned topological surface could enhance cellular osteogenic differentiation. In this work, we created a chirality-patterned surface potential distribution of CoFe₂O₄/poly(vinylidene fluoride-trifluoroethylene (CFO/P(VDF-TrFE)) membranes to explore the ...
bones, etc ; adhesion; bioactive properties; biocompatibility; compression strength; hardness; phosphates; polyhydroxyalkanoates; Show all 8 Subjects
Abstract:
... Polyhydroxyalkanoates (PHA) is a naturally degradable polyester with good biocompatibility. However, several disadvantages including poor bioactivity and mechanical properties limit the biomedical application of PHA. To circumvent these drawbacks, PHA needs to be blended with other materials to improve performance. Beta-tricalcium phosphate (β-TCP) has emerged as one of the most promising bone rep ...
bones, etc ; artificial skin; biocompatible materials; cellulose; drugs; extracellular matrix; tissue repair; Show all 7 Subjects
Abstract:
... Driven by its excellent physical and chemical properties, BC (bacterial cellulose) has achieved significant progress in the last decade, rendering with many novel applications. Due to its resemblance to the structure of extracellular matrix, BC-based biomaterials have been widely explored for biomedical applications such as tissue engineering and drug delivery. The recent advances in nanotechnolog ...
bones, etc ; bone formation; bone transplantation; gelatin; mice; skeletal muscle; tissue repair; Show all 7 Subjects
Abstract:
... Critical-size bone defects are imposing a substantial biomedical burden. Despite being long regarded as a potential approach to mitigate this burden or an alternative to bone grafts, bone tissue engineering (BTE) has virtually not proceeded to widespread clinical practices. In the BTE field, it is highly required to find a facile method to prepare active scaffolds with tailored biological function ...