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Titanium 3d

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https://www.readbyqxmd.com/read/29223522/custom-made-titanium-3d-printed-interbody-cages-for-treatment-of-osteoporotic-fracture-related-spinal-deformity
#1
Timothy Siu, Jeffrey M Rogers, Kainu Lin, Robert Thompson, Mark Owbridge
BACKGROUND: Advances in minimally invasive interbody fusion have greatly enhanced surgeons' capability to correct adult spinal deformity with reduced morbidity. However, the feasibility of such approaches is limited in patients with previous osteoporotic fractures as the resultant vertebral deformity renders the endplate geometry incongruous with conventional interbody implants. Current 3D printing technology offers a novel solution by fabricating custom-made implants tailored to individual anatomy...
December 6, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29215451/mandibular-reconstruction-using-a-customized-three-dimensional-titanium-implant-applied-on-the-lingual-surface-of-the-mandible
#2
You-Young Jo, Seong-Gon Kim, Min-Keun Kim, Sung-Ho Shin, Janghoon Ahn, Hyun Seok
A patient had a right mandibular defect due to resection of an ameloblastoma. Previously, the defect had been reconstructed by an iliac bone graft, and subsequently, a titanium mesh with xenograft was used. However, it was not successfully reconstructed. For the recovery of mandible continuity and rehabilitation of jaw movement, we manufactured a customized 3-dimensional titanium implant by computer-aided design and manufacturing and electron beam melting technology. This implant was designed to have a porous body structure and lingual plate...
December 6, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29191608/a-fully-digital-approach-to-replicate-functional-and-aesthetic-parameters-in-implant-supported-full-arch-rehabilitation
#3
Carlo Monaco, Nicola Ragazzini, Lorenzo Scheda, Edoardo Evangelisti
PURPOSE: The aim of this technical procedure was to use a fully digital technique (FDT) for full-arch implant support rehabilitation. The FDT was used to transfer the provisional restoration parameters to definitive restorations using intraoral scanners. METHODS: Three sets of digital impressions were obtained. Through the first set, standard tessellation language 1 (STL1), provisional restorations screwed to implants and the surrounding gingival tissue was captured...
November 27, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29124002/three-dimensional-reconstruction-of-late-post-traumatic-orbital-wall-defects-by-customized-implants-using-cad-cam-3d-stereolithographic-models-a-case-report
#4
Vignesh U, Divya Mehrotra, Dichen, Vaibhav Anand, Debraj Howlader
Aim: Purpose of this case report is to highlight the precision and accuracy obtained with patient specific implants for orbital reconstruction designed on the basis of volumetric analysis of orbital computed tomographic scan (CT) scans using virtual planning, computerised designing and manufacturing and stereolithographic models to correct late post-traumatic orbital deformities such as enophthalmos and diplopia. Material and methods: This case report describes a patient who visited our outpatient clinic for correction of enophthalmos and persistent diplopia in upward gaze, seven months post trauma...
September 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/29103890/large-osseous-defect-reconstruction-using-a-custom-three-dimensional-printed-titanium-truss-implant
#5
Eric So, Vincent H Mandas, Lee Hlad
Treatment of large osseous defects remains a difficult surgical challenge. Autografts and allografts have been known to undergo late collapse, because these options are not specifically designed to withstand the high loads of the foot and ankle. The inability to achieve the correct shape for reconstruction further limits their application. Large osseous defects will result during salvage after failed Lapidus bunionectomy, explantation of failed total ankle replacements, and nonunion of Evans calcaneal osteotomy...
November 2, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29095963/comparative-evaluation-of-a-four-implant-supported-polyetherketoneketone-framework-prosthesis-a-three-dimensional-finite-element-analysis-based-on-cone-beam-computed-tomography-and-computer-aided-design
#6
Ki-Sun Lee, Sang-Wan Shin, Sang-Pyo Lee, Jong-Eun Kim, Jee-Hwan Kim, Jeong-Yol Lee
PURPOSE: The purpose of this pilot study was to evaluate and compare polyetherketoneketone (PEKK) with different framework materials for implant-supported prostheses by means of a three-dimensional finite element analysis (3D-FEA) based on cone beam computed tomography (CBCT) and computer-aided design (CAD) data. MATERIALS AND METHODS: A geometric model that consisted of four maxillary implants supporting a prosthesis framework was constructed from CBCT and CAD data of a treated patient...
November 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29068576/assessment-of-the-primary-stability-of-root-analog-zirconia-implants-designed-using-cone-beam-computed-tomography-software-by-means-of-the-periotest%C3%A2-device-an-ex-vivo-study-a-preliminary-report
#7
Jacek Matys, Katarzyna Świder, Rafał Flieger, Marzena Dominiak
BACKGROUND: The implant primary stability is a fundamental prerequisite for a success of osseointegration process which determines the prosthetic reconstruction time. OBJECTIVES: The aim of the present study was to assess the quality and precision of modern conical bone computer tomography (CBCT) software in preparing root analog zirconia implants (RAZIs) by measuring its primary stability by means of the Periotest device. MATERIAL AND METHODS: Thirteen pig jaws with proper erupted first premolar (P1) teeth were used in the study...
August 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29064584/accuracy-of-a-patient-specific-3d-printed-drill-guide-for-placement-of-cervical-transpedicular-screws
#8
Sinead E Hamilton-Bennett, Bill Oxley, Sebastien Behr
OBJECTIVE: To develop a patient-specific 3-dimensional (3D) printed drill guide for placement of cervical transpedicular screws and to assess its accuracy. STUDY DESIGN: Prospective case-series. SAMPLE POPULATION: Thirty-two cervical pedicle screws (CPS) placed in 3 large breed dogs. METHODS: Computed tomographic (CT) data of the cervical vertebrae were exported to a medical image processing software and 3D virtual vertebral models were created for each vertebra...
October 24, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/29023426/nanometric-mil-125-nh%C3%A2-metal-organic-framework-as-a-potential-nerve-agent-antidote-carrier
#9
Sérgio M F Vilela, Pablo Salcedo-Abraira, Isabelle Colinet, Fabrice Salles, Martijn C de Koning, Marloes J A Joosen, Christian Serre, Patricia Horcajada
The three-dimensional (3D) microporous titanium aminoterephthalate MIL-125-NH₂ (MIL: Material of Institut Lavoisier) was successfully isolated as monodispersed nanoparticles, which are compatible with intravenous administration, by using a simple, safe and low-cost synthetic approach (100 °C/32 h under atmospheric pressure) so that for the first time it could be considered for encapsulation and the release of drugs. The nerve agent antidote 2-[(hydroxyimino)methyl]-1-methyl-pyridinium chloride (2-PAM or pralidoxime) was effectively encapsulated into the pores of MIL-125-NH₂ as a result of the interactions between 2-PAM and the pore walls being mediated by π-stacking and hydrogen bonds, as deduced from infrared spectroscopy and Monte Carlo simulation studies...
October 12, 2017: Nanomaterials
https://www.readbyqxmd.com/read/29019926/the-effects-of-acid-etching-on-the-nanomorphological-surface-characteristics-and-activation-energy-of-titanium-medical-materials
#10
Kuo-Yung Hung, Yi-Chih Lin, Hui-Ping Feng
The purpose of this study was to characterize the etching mechanism, namely, the etching rate and the activation energy, of a titanium dental implant in concentrated acid and to construct the relation between the activation energy and the nanoscale surface topographies. A commercially-pure titanium (CP Ti) and Ti-6Al-4V ELI surface were tested by shot blasting (pressure, grain size, blasting distance, blasting angle, and time) and acid etching to study its topographical, weight loss, surface roughness, and activation energy...
October 11, 2017: Materials
https://www.readbyqxmd.com/read/29018818/the-mechanical-properties-and-biometrical-effect-of-3d-preformed-titanium-membrane-for-guided-bone-regeneration-on-alveolar-bone-defect
#11
So-Hyoun Lee, Jong-Hoon Moon, Chang-Mo Jeong, Eun-Bin Bae, Chung-Eun Park, Gye-Rok Jeon, Jin-Ju Lee, Young-Chan Jeon, Jung-Bo Huh
The purpose of this study is to evaluate the effect of three-dimensional preformed titanium membrane (3D-PFTM) to enhance mechanical properties and ability of bone regeneration on the peri-implant bone defect. 3D-PFTMs by new mechanically compressive molding technology and manually shaped- (MS-) PFTMs by hand manipulation were applied in artificial peri-implant bone defect model for static compressive load test and cyclic fatigue load test. In 12 implants installed in the mandibular of three beagle dogs, six 3D-PFTMs, and six collagen membranes (CM) randomly were applied to 2...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28968522/mapping-buried-nanostructures-using-subsurface-ultrasonic-resonance-force-microscopy
#12
Maarten H van Es, Abbas Mohtashami, Rutger M T Thijssen, Daniele Piras, Paul L M J van Neer, Hamed Sadeghian
Nondestructive subsurface nanoimaging of buried nanostructures is considered to be extremely challenging and is essential for the reliable manufacturing of nanotechnology products such as three-dimensional (3D) transistors, 3D NAND memory, and future quantum electronics. In scanning probe microscopy (SPM), a microcantilever with a sharp tip can measure the properties of a surface with nanometer resolution. SPM combined with ultrasound excitation, known as ultrasound SPM, has shown the capability to image buried nanoscale features...
September 23, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/28956601/high-nuclearity-lanthanide-titanium-oxo-clusters-as-luminescent-molecular-thermometers-with-high-quantum-yields
#13
Dong-Fei Lu, Zi-Feng Hong, Jing Xie, Xiang-Jian Kong, La-Sheng Long, Lan-Sun Zheng
Three heterometallic lanthanide-titanium oxo clusters (LnTOCs) formulated as Eu2Ti4(μ3-O)4(tbba)12(acac)2 (Eu2Ti4, 1, Hacac = acetylacetone), Eu5Ti4(μ3-O)6(tbba)20(Htbba)(THF)2 (Eu5Ti4, 2), and Eu8Ti10(μ3-O)14(Ac)2(tbba)34(H2O)4(THF)2(Htbba)2 (Eu8Ti10, 3) were prepared through the reactions of 4-tert-butylbenzoate (Htbba), rare-earth salts, and Ti(O(i)Pr)4. The solution luminescence investigation discovered a size-dependent quantum yield phenomenon in solution. A solid-state luminescence study showed that these three LnTOCs display temperature-dependent photoluminescent properties...
September 28, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28937740/ab-initio-study-of-the-atomic-level-structure-of-the-rutile-tio2-110-titanium-nitride-tin-interface
#14
José Julio Gutiérrez Moreno, Michael Nolan
Titanium nitride (TiN) is widely used in industry as a protective coating due to its hardness and resistance to corrosion and can spontaneously form a thin oxide layer when it is exposed to air, which could modify the properties of the coating. With limited understanding of the TiO2-TiN interfacial system at present, this work aims to describe the structural and electronic properties of oxidized TiN based on a density functional theory (DFT) study of the rutile TiO2(110)-TiN(100) interface model system, also including Hubbard +U correction on Ti 3d states...
October 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28899562/the-design-production-and-clinical-application-of-3d-patient-specific-implants-with-drilling-guides-for-acetabular-surgery
#15
B J Merema, J Kraeima, K Ten Duis, K W Wendt, R Warta, E Vos, R H Schepers, M J H Witjes, F F A IJpma
An innovative procedure for the development of 3D patient-specific implants with drilling guides for acetabular fracture surgery is presented. By using CT data and 3D surgical planning software, a virtual model of the fractured pelvis was created. During this process the fracture was virtually reduced. Based on the reduced fracture model, patient-specific titanium plates including polyamide drilling guides were designed, 3D printed and milled for intra-operative use. One of the advantages of this procedure is that the personalised plates could be tailored to both the shape of the pelvis and the type of fracture...
August 30, 2017: Injury
https://www.readbyqxmd.com/read/28895931/wet-chemical-synthesis-of-3d-stacked-thin-film-metal-oxides-for-all-solid-state-li-ion-batteries
#16
Evert Jonathan van den Ham, Giulia Maino, Gilles Bonneux, Wouter Marchal, Ken Elen, Sven Gielis, Felix Mattelaer, Christophe Detavernier, Peter H L Notten, Marlies K Van Bael, An Hardy
By ultrasonic spray deposition of precursors, conformal deposition on 3D surfaces of tungsten oxide (WO₃) negative electrode and amorphous lithium lanthanum titanium oxide (LLT) solid-electrolyte has been achieved as well as an all-solid-state half-cell. Electrochemical activity was achieved of the WO₃ layers, annealed at temperatures of 500 °C. Galvanostatic measurements show a volumetric capacity (415 mAh·cm(-3)) of the deposited electrode material. In addition, electrochemical activity was shown for half-cells, created by coating WO₃ with LLT as the solid-state electrolyte...
September 12, 2017: Materials
https://www.readbyqxmd.com/read/28892256/possibility-of-quantitative-t2-mapping-mri-of-cartilage-near-metal-in-high-tibial-osteotomy-a-human-cadaver-study
#17
Joost Verschueren, Duncan E Meuffels, Esther E Bron, Stefan Klein, Gert-Jan Kleinrensink, Jan A N Verhaar, Sita M A Bierma-Zeinstra, Gabriel P Krestin, Piotr A Wielopolski, Max Reijman, Edwin H G Oei
T2-mapping is a widely used quantitative MRI technique in osteoarthritis research. An important challenge for its application in the context of high tibial osteotomy (HTO) is the presence of metallic fixation devices. In this study, we evaluated the possibility of performing T2-mapping after a HTO, by assessing the extent of magnetic susceptibility artifacts and the influence on T2 relaxation times caused by two commonly used fixation devices. T2-mapping with a 3D fast spin-echo sequence at 3 Tesla was performed on 11 human cadaveric knee joints before and after implantation of a titanium plate and screws (n = 5) or cobalt chrome staples(n = 6)...
September 11, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28888931/biomechanical-testing-of-zirconium-dioxide-osteosynthesis-system-for-le-fort-i-advancement-osteotomy-fixation
#18
Lukas Hingsammer, Markus Grillenberger, Martin Schagerl, Michael Malek, Stefan Hunger
The following work is the first evaluating the applicability of 3D printed zirconium dioxide ceramic miniplates and screws to stabilize maxillary segments following a Le-Fort I advancement surgery. Conventionally used titanium and individual fabricated zirconium dioxide miniplates were biomechanically tested and compared under an occlusal load of 120N and 500N using 3D finite element analysis. The overall model consisted of 295,477 elements. Under an occlusal load of 500N a safety factor before plastic deformation respectively crack of 2...
September 5, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28888428/displacement-comparison-of-cad-cam-titanium-and-zirconia-abutments-to-implants-with-different-conical-connections
#19
Burak Yilmaz, Shervin Hashemzadeh, Jeremy D Seidt, Nancy L Clelland
PURPOSE: To compare the displacements of CAD-CAM zirconia and titanium abutments into different internal connection systems after torquing. METHODS: OsseoSpeed EV and OsseoSpeed TX implants (n=10) were placed in resin blocks. Zirconia and titanium abutments (n=5) were first hand tightened and then tightened to the recommended torque (20Ncm for TX and 25Ncm for EV). Displacements of abutments between screw tightening by hand and torque driver was measured using three-dimensional digital image correlation (3D DIC) technique...
September 6, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28885370/usefulness-of-titanium-mesh-cage-for-posterior-c1-c2-fixation-in-patients-with-atlantoaxial-instability
#20
Hwan-Seo Yang, Ki-Wan Kim, Young-Min Oh, Jong-Pil Eun
The aim of this study was to investigate the usefulness of titanium mesh cage as an interlaminar spacer combined with nitinol shape memory loop fixation in patients with atlantoaxial instability.From April 2009 to March 2017, among the patients with atlantoaxial instability, a total of 30 patients were treated by nitinol shape memory loop fixation combined with titanium mesh cage as a spacer. We retrospectively reviewed 30 enrolled patients. Successful fusion was determined as improvement of symptoms and radiologic findings of bone fusion...
September 2017: Medicine (Baltimore)
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