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titanium implant

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https://www.readbyqxmd.com/read/28637120/is-tutobone-an-efficient-alternative-to-other-implants-used-in-anterior-cervical-discectomy-and-fusion-surgeries
#1
Savithru Kumar Prakash, Nitin Mukerji, Fredrik Prem Nath
BACKGROUND: The graft site morbidity following iliac crest harvesting is significant. To overcome this, different bone substitutes like coral dowels, solvent dissolved bovine/human bone substitutes, and carbon fiber/titanium cages have been used. This study was undertaken to assess the postoperative radiological fusion rates and symptom relief in patients who had Tutobone used as an interbody spacer compared to autologous bone graft (ABG), cages, surgibone and coral dowels. METHODS: This was a retrospective, observational study...
March 6, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28636124/the-ips-scale-a-new-soft-tissue-assessment-scale-for-percutaneous-and-transcutaneous-implants-for-bone-conduction-devices
#2
Ivo J Kruyt, Rik C Nelissen, Martin L Johansson, Emmanuel A M Mylanus, Myrthe K S Hol
Percutaneous titanium implants for bone conduction devices (BCDs) have offered, since 1977, a solution for patients with hearing loss not treatable by conventional hearing aids, such as patients with chronic ear infections or microtia and/or ear canal atresia. Percutaneous implants imply a continuous breach in the mechanical defensive barrier of the skin. To compensate for this breach, immunological mechanisms in the subcutaneous tissue surrounding the implant become more active. This article is protected by copyright...
June 21, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28635681/antimicrobial-activity-of-nitric-oxide-releasing-ti-6al-4v-metal-oxide
#3
Nina A Reger, Wilson S Meng, Ellen S Gawalt
Titanium and titanium alloy materials are commonly used in joint replacements, due to the high strength of the materials. Pathogenic microorganisms can easily adhere to the surface of the metal implant, leading to an increased potential for implant failure. The surface of a titanium-aluminum-vanadium (Ti-6Al-4V) metal oxide implant material was functionalized to deliver an small antibacterial molecule, nitric oxide. S-nitroso-penicillamine, a S-nitrosothiol nitric oxide donor, was covalently immobilized on the metal oxide surface using self-assembled monolayers...
June 21, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/28632256/scanning-electron-microscopy-analysis-of-the-adaptation-of-single-unit-screw-retained-computer-aided-design-computer-aided-manufacture-abutments-after-mechanical-cycling
#4
Roberto Adrian Markarian, Deborah Pedroso Galles, Fabiana Mantovani Gomes França
PURPOSE: To measure the microgap between dental implants and custom abutments fabricated using different computer-aided design/computer-aided manufacture (CAD/CAM) methods before and after mechanical cycling. MATERIALS AND METHODS: CAD software (Dental System, 3Shape) was used to design a custom abutment for a single-unit, screw-retained crown compatible with a 4.1-mm external hexagon dental implant. The resulting stereolithography file was sent for manufacturing using four CAD/CAM methods (n = 40): milling and sintering of zirconium dioxide (ZO group), cobalt-chromium (Co-Cr) sintered via selective laser melting (SLM group), fully sintered machined Co-Cr alloy (MM group), and machined and sintered agglutinated Co-Cr alloy powder (AM group)...
June 20, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28632254/osteogenic-potential-of-gingival-mesenchymal-stem-cells-over-titanium-machined-surfaces
#5
Julio A Carrion, Junaid Rajani, Mohamed Al Bahrawy, Xiaojun Chan, Tae Jin Kim, Srinivas Myneni, Vincent J Iacono
PURPOSE: To evaluate the biochemical composition of bone nodules deposited by gingival mesenchymal stem cells (GMSCs) over titanium machined surfaces in vitro. MATERIALS AND METHODS: GMSCs were isolated from healthy gingival tissues of patients undergoing crown-lengthening surgical procedures. GMSCs were characterized following the International Society for Cellular Therapy guidelines. After incubation of the GMSCs with titanium discs, osteogenic differentiation was induced for 28 days...
June 20, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28628390/influence-of-screw-surface-treatment-on-retention-of-implant-supported-fixed-partial-dentures
#6
Marcos Boaventura de Moura, Renata Borges Rodrigues, Leandro Moreira Pinto, Cleudmar Amaral de Araújo, Veridiana Resende Novais, Paulo César Simamoto Júnior
The aim of this study was to assess the effect of DLC (Diamond-like carbon) coating on the removal torque of prefabricated implant screws after cyclic loading. Four groups with two crowns supported by two implants (n=5) were obtained according to splinted and non-splinted prosthesis, using titanium or DLC screw (STi, SC, NSTi and NSC). The prosthetic screws were tightened at 32Ncm, retightened, and the specimens were submitted to 106 mechanical cycles (4Hz/98N). After cyclic loading, loosening torque was evaluated and the final measurements were performed...
June 19, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28626970/surgical-treatment-of-peri-implantitis-intrabony-lesions-by-means-of-deproteinized-bovine-bone-mineral-with-10-collagen-7-year-results
#7
Mario Roccuzzo, Dario Pittoni, Andrea Roccuzzo, Lorena Charrier, Paola Dalmasso
OBJECTIVES: The aim of this study was to evaluate the long-term results of the surgical treatment of single peri-implantitis intrabony defects, by means of deproteinized bovine bone mineral with 10% collagen (DBBMC). MATERIAL AND METHODS: The original population consisted of 26 patients with one crater-like defect, around either sandblasted and acid-etched (SLA) or titanium plasma-sprayed (TPS) dental implants, with a probing depth (PD) ≥6 mm and no implant mobility (Roccuzzo et al...
June 18, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28626888/clinical-and-radiographic-evaluation-of-early-loaded-narrow-diameter-implants-5-year-follow-up-of-a-multicenter-prospective-clinical-study
#8
Pablo Galindo-Moreno, Peter Nilsson, Paul King, Nils Worsaae, Alexander Schramm, Miguel Padial-Molina, Carlo Maiorana
OBJECTIVE: This study was initiated to evaluate the 5-year implant survival rate and marginal bone levels around a 3.0-mm implant when replacing a single tooth in the anterior region. MATERIALS AND METHODS: The study was designed as a prospective, single-arm, multicenter clinical study. Patients missing 12, 22, 32, 31, 41 or 42 teeth were included, and implants of 3.0 mm diameter and different lengths were placed by a one-stage surgery protocol. Definitive cemented crowns were placed 6-10 weeks later...
June 18, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28625686/the-influence-of-contamination-and-cleaning-on-the-strength-of-modular-head-taper-fixation-in-total-hip-arthroplasty
#9
Annika Krull, Michael M Morlock, Nicholas E Bishop
BACKGROUND: Intraoperative interface contamination of modular head-stem taper junctions of hip implants can lead to poor fixation strength, causing fretting and crevice corrosion or even stem taper fracture. Careful cleaning before assembly should help to reduce these problems. The purpose of this study was to determine the effect of cleaning (with and without drying) contaminated taper interfaces on the taper fixation strength. METHODS: Metal or ceramic heads were impacted onto titanium alloy stem tapers with cleaned or contaminated (fat or saline solution) interfaces...
May 13, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28624657/adiponectin-improves-the-osteointegration-of-titanium-implant-under-diabetic-conditions-by-reversing-mitochondrial-dysfunction-via-the-ampk-pathway-in-vivo-and-in-vitro
#10
Xiao-Fan Hu, Lin Wang, Yi-Zhao Lu, Geng Xiang, Zi-Xiang Wu, Ya-Bo Yan, Yang Zhang, Xiong Zhao, Yuan Zang, Lei Shi, Wei Lei, Ya-Fei Feng
Diabetes-induced reactive oxygen species (ROS) overproduction would result in compromised osteointegration of titanium implant (TI) and high rate of implant failure, yet the underlying mechanisms remain elusive. Adiponectin (APN) is a fat-derived adipocytokine with strong antioxidant, mitochondrial-protective and anti-diabetic efficacies. We hypothesized that mitochondrial dysfunction under diabetes may account for the oxidative stress in osteoblasts and titanium-bone interface (TBI) instability, which could be ameliorated by APN...
June 14, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28624655/biological-responses-to-m13-bacteriophage-modified-titanium-surfaces-in-vitro
#11
Yuhua Sun, Yiting Li, Baohua Wu, Jianxin Wang, Xiong Lu, Shuxin Qu, Jie Weng, Bo Feng
Phage-based materials have showed great potential in tissue engineering application. However, it is unknown what inflammation response will happen to this kind of materials. This work is to explore the biological responses to M13 bacteriophage (phage) modified titanium surfaces in vitro from the aspects of their interaction with macrophages, osteoblasts and mineralization behavior. Pretreated Ti surface, Ti surfaces with noncrosslinked phage film (APP) and crosslinked phage film (APPG) were compared. Phage films could limit the macrophage adhesion and activity due to inducing adherent-cell apoptosis...
June 14, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28622909/biomechanical-evaluation-of-a-novel-pedicle-screw-based-interspinous-spacer-a-finite-element-analysis
#12
Hsin-Chang Chen, Jia-Lin Wu, Shou-Chieh Huang, Zheng-Cheng Zhong, Shiu-Ling Chiu, Yu-Shu Lai, Cheng-Kung Cheng
Interspinous spacers have been designed to provide a minimally invasive surgical technique for patients with lumbar spinal stenosis or foraminal stenosis. A novel pedicle screw-based interspinous spacer has been developed in this study, and the aim of this finite element experiment was to investigate the biomechanical differences between the pedicle screw-based interspinous spacer (M-rod system) and the typical interspinous spacer (Coflex-F™). A validated finite element model of an intact lumbar spine was used to analyze the insertions of the Coflex-F™, titanium alloy M-rod (M-Ti), and polyetheretherketone M-rod (M-PEEK), independently...
June 13, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28622569/selective-laser-melting-porous-metallic-implants-with-immobilized-silver-nanoparticles-kill-and-prevent-biofilm-formation-by-methicillin-resistant-staphylococcus-aureus
#13
Ingmar A J van Hengel, Martijn Riool, Lidy E Fratila-Apachitei, Janneke Witte-Bouma, Eric Farrell, Amir A Zadpoor, Sebastian A J Zaat, Iulian Apachitei
Implant-associated infection and limited longevity are two major challenges that orthopedic devices need to simultaneously address. Additively manufactured porous implants have recently shown tremendous promise in improving bone regeneration and osseointegration, but, as any conventional implant, are threatened by infection. In this study, we therefore used rational design and additive manufacturing in the form of selective laser melting (SLM) to fabricate porous titanium implants with interconnected pores, resulting in a 3...
February 28, 2017: Biomaterials
https://www.readbyqxmd.com/read/28621746/biocompatibility-analyses-of-al%C3%A2-o%C3%A2-treated-titanium-plates-tested-with-osteocyte-and-fibroblast-cell-lines
#14
Alberto Smargiassi, Jessika Bertacchini, Marta Checchi, Francesco Cavani, Marzia Ferretti, Carla Palumbo
Osseointegration of a titanium implant is still an issue in dental/orthopedic implants durable over time. The good integration of these implants is mainly due to their surface and topography. We obtained an innovative titanium surface by shooting different-in-size particles of Al₂O₃ against the titanium scaffolds which seems to be ideal for bone integration. To corroborate that, we used two different cell lines: MLO-Y4 (murine osteocytes) and 293 (human fibroblasts) and tested the titanium scaffolds untreated and treated (i...
June 16, 2017: Biomedicines
https://www.readbyqxmd.com/read/28619648/biophysical-characterization-of-nanostructured-tio2-as-a-good-substrate-for-hbm-msc-adhesion-growth-and-differentiation
#15
L Petecchia, C Usai, M Vassalli, P Gavazzo
Mesenchymal stem cells from human bone marrow (hBM-MSC) are widely utilized for clinical applications involving bone healing. In this context, their use has been often optimized in association to variously designed titanium substrates, being this material of great use in orthopaedic implants. According to recent findings, the ability of hBM-MSC to differentiate towards a specific lineage is not only driven by biochemical signals, but physical stimuli, such as rigidity or roughness of the substrate, can also support a commitment towards osteogenic differentiation...
June 12, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28616704/metallic-ion-release-after-knee-prosthesis-implantation-a-prospective-study
#16
Adrien Lons, Sophie Putman, Gilles Pasquier, Henri Migaud, Elodie Drumez, Julien Girard
INTRODUCTION: Metal-on-metal (MoM) hip replacement bearings produce metallic ions that can cause health complications. Metallic release also occurs with other materials, but data on metallic ion levels after knee arthroplasty are sparse. We postulate that knee replacement generates elevating metallic ions (chromium (Cr), cobalt (Co) and titanium (Ti)) during the first year after implantation. PATIENTS AND METHODS: This ongoing prospective study included all patients who underwent the same type of knee arthroplasty between May and December 2013...
June 14, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28614155/the-role-of-the-back-plate-in-angle-anatomy-with-the-boston-type-i-keratoprosthesis
#17
Elise V Taniguchi, Eleftherios I Paschalis, Alja Crnej, Ai Ren, Kathryn A Colby, James Chodosh, Louis R Pasquale, Lucy Q Shen, Claes H Dohlman, Andrea Cruzat
PURPOSE: To quantitatively evaluate the angle anatomy in eyes with the Boston type I keratoprosthesis (B-KPro) differing in the back plate (BP) material and size using anterior segment optical coherence tomography. METHODS: B-KPro eyes with poly(methyl methacrylate) (PMMA) (7.0 and 8.5 mm) and titanium (7.0, 8.5, and 9.5 mm) BPs were imaged with anterior segment optical coherence tomography. The angle opening distance at 500 μm from the scleral spur (AOD500), trabecular iris surface area at 500 μm from the scleral spur (TISA500), and trabecular iris angle at 500 μm from the scleral spur (TIA500) were measured...
June 13, 2017: Cornea
https://www.readbyqxmd.com/read/28612506/synergistic-interactions-between-corrosion-and-wear-at-titanium-based-dental-implant-connections-a-scoping-review
#18
REVIEW
K Apaza-Bedoya, M Tarce, C A M Benfatti, B Henriques, M T Mathew, W Teughels, J C M Souza
Two-piece implant systems are mainly used in oral implantology involving an osseointegrated implant connected to an abutment, which supports prosthetic structures. It is well documented that the presence of microgaps, biofilms and oral fluids at the implant-abutment connection can cause mechanical and biological complications. The aim of this review paper was to report the degradation at the implant-abutment connection by wear and corrosion processes taking place in the oral cavity. Most of the retrieved studies evaluated the wear and corrosion (tribocorrosion) of titanium-based materials used for implants and abutments in artificial saliva...
June 14, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28609500/morphometric-changes-induced-by-cold-argon-plasma-treatment-on-osteoblasts-grown-on-different-dental-implant-surfaces
#19
Luigi Canullo, Tullio Genova, Pietro Mandracci, Federico Mussano, Roberto Abundo, Joseph P Fiorellini
Treatments for enhancing surface energy were studied in an effort to create a more favorable environment for cell adhesion. Cold argon plasma (CAP) is able to improve titanium-cell contact, producing hydrophilic surfaces with higher wettability. The aim of this in vitro study was to estimate the early cell morphology after CAP treatment of different commercially available titanium surfaces. Surface wettability was significantly augmented in all the treated samples. The authors investigated how CAP affected the behavior of osteoblasts by evaluating the cell morphology outcome...
July 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28608839/microgroove-and-collagen-poly-%C3%AE%C2%B5-caprolactone-nanofiber-mesh-coating-improves-the-mechanical-stability-and-osseointegration-of-titanium-implants
#20
Morshed Khandaker, Shahram Riahinezhad, Wendy R Williams, Roman Wolf
The effect of depositing a collagen (CG)-poly-ε-caprolactone (PCL) nanofiber mesh (NFM) at the microgrooves of titanium (Ti) on the mechanical stability and osseointegration of the implant with bone was investigated using a rabbit model. Three groups of Ti samples were produced: control Ti samples where there were no microgrooves or CG-PCL NFM, groove Ti samples where microgrooves were machined on the circumference of Ti, and groove-NFM Ti samples where CG-PCL NFM was deposited on the machined microgrooves...
June 13, 2017: Nanomaterials
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