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https://www.readbyqxmd.com/read/29326506/the-bond-strength-of-nanohybrid-and-nanoceramic-composites-to-feldspathic-porcelain
#1
Hatice Özdemir, Nuran Dinçkal Yanikoglu
Background: Porcelain fracture is the most important problem in fixed prosthetic restorations. The replacement of fractured restoraions isn't often prefer by patients and dentists. Intraoral repair of fractured porcelain is a big alternative for patient and dentist. For this reason, dentists try to improve different surface treatments to increase the bond strength between porcelain and repair materials such as composite resins. Aims: The aim of this study was to evaluate the shear bond strength (SBS) of nano-hybrid (Nh...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29325074/cervical-disc-arthroplasty-current-evidence-and-real-world-application
#2
Pierce D Nunley, Domagoj Coric, Kelly A Frank, Marcus B Stone
Cervical total disc replacement (cTDR) is still considered a developing technology, with widespread clinical use beginning in the early 2000s. Despite being relatively new to the marketplace, the literature surrounding cTDR is abundant. We conducted a thorough review of literature published in the United States (US) and outside the US to report the current global state of cTDR research and clinical use. Search criteria were restricted to publications with a clinical patient population, excluding finite element analyses, biomechanical studies, cadaver studies, surgical technique-specific papers, and case studies...
January 6, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29315119/cervical-artificial-disc-replacement-with-discover-prosthesis-does-not-reduce-the-midterm-risk-of-heterotopic-ossification-results-of-a-cohort-study
#3
Jinhao Miao, Ye Shen, Chao Li, Lei Fang, Lei Zhang, Xiangyi Zhang, Yiman Li, Yong Kuang
STUDY DESIGN: A prospective cohort study with 79 patients. OBJECTIVE: To analyze the midterm incidence of heterotopic ossification (HO) after cervical artificial disc replacement with Discover prosthesis in treatment of cervical degenerative disc disease. MATERIALS AND METHODS: A cohort of 79 patients with 102 Discover prostheses (56 monosegment and 23 bisegments) was evaluated. Clinical and radiographic follow-up was performed. The performance of HO of the operative segments was assessed annually after the operation for 4 years...
January 8, 2018: Clinical Spine Surgery
https://www.readbyqxmd.com/read/29303858/surgical-treatment-of-synovial-chondromatosis-in-the-inferior-compartment-of-the-temporomandibular-joint-with-articular-disc-involvement
#4
Pablo Cornelius Comelli Leite, Elen de Souza Tolentino, Amanda Lury Yamashita, Lilian Cristina Vessoni Iwaki, Liogi Iwaki Filho
The authors report an unusual case of painful synovial chondromatosis originated in the inferior compartment of the temporomandibular joint (TMJ) with articular disc involvement in a 56-year-old woman with complaint of severe pain in the right preauricular region. Magnetic resonance images showed advanced destruction of the right articular disc anteriorly displaced, condylar erosion, and distinct nodules within an extremely expanded inferior joint compartment with large amount of fluid, as well as a large TMJ effusion...
January 4, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29303467/prospective-randomized-multicenter-study-of-cervical-arthroplasty-versus-anterior-cervical-discectomy-and-fusion-5-year-results-with-a-metal-on-metal-artificial-disc
#5
Domagoj Coric, Richard D Guyer, Pierce D Nunley, David Musante, Cameron Carmody, Charles Gordon, Carl Lauryssen, Margaret O Boltes, Donna D Ohnmeiss
OBJECTIVE Seven cervical total disc replacement (TDR) devices have received FDA approval since 2006. These devices represent a heterogeneous assortment of implants made from various biomaterials with different biomechanical properties. The majority of these devices are composed of metallic endplates with a polymer core. In this prospective, randomized multicenter study, the authors evaluate the safety and efficacy of a metal-on-metal (MoM) TDR (Kineflex|C) versus anterior cervical discectomy and fusion (ACDF) in the treatment of single-level spondylosis with radiculopathy through a long-term (5-year) follow-up...
January 5, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29291157/staphylococcus-epidermidis-isolates-from-nares-and-prosthetic-joint-infections-are-mupirocin-susceptible
#6
Lavin Salih, Staffan Tevell, Emeli Månsson, Åsa Nilsdotter-Augustinsson, Bengt Hellmark, Bo Söderquist
The objective of the present study was to investigate the antibiotic susceptibility including mupirocin among Staphylococcus. epidermidis isolated from prosthetic joint infections (PJIs) (n=183) and nasal isolates (n=75) from patients intended to undergo prosthetic joint replacements. Susceptibility to mupirocin (used for eradication of nasal carriership of Staphylococcus aureus) was investigated by gradient test, and susceptibility to various other antimicrobial agents was investigated by disc diffusion test...
2018: Journal of Bone and Joint Infection
https://www.readbyqxmd.com/read/29288377/outcomes-of-the-bryan-cervical-disc-replacement-fifteen-year-follow-up
#7
Vincent Pointillart, Jean-Etienne Castelain, Pierre Coudert, Derek Thomas Cawley, Olivier Gille, Jean-Marc Vital
BACKGROUND: The CTDR is a technique that treats cervical disc degenerative disease. Initial shorter-term studies showed good clinical and radiological results. PURPOSE: To assess the clinical and radiological results of Bryan cervical disc replacement (Medtronic Sofamor Danek Inc., Memphis, TN) at 15-year follow-up. RESULTS: This prospective study included 20 patients who underwent 22 CTDR, comprising a single-level procedure in 14 patients and two-level procedures in six patients...
December 29, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29285477/pseudomonas-aeruginosa-producing-metallo-%C3%AE-lactamases-vim-imp-sme-and-aim-in-the-clinical-isolates-of-intensive-care-units-a-university-hospital-in-isfahan-iran
#8
Farzin Khorvash, Mohammadreza Yazdani, Shiva Shabani, Aliasghar Soudi
Background: Pseudomonas aeruginosa is a severe challenge for antimicrobial therapy, due to the chromosomal mutations or exhibition of intrinsic resistance to various antimicrobial agents such as most β-lactams. We undertook this study to evaluate the existence of SME, IMP, AIM, and VIM metallo-β-lactamases (MBL) encoding genes among P. aeruginosa strains isolated from Intensive Care Unit (ICU) patients in Al-Zahra Hospital in Isfahan, Iran. Materials and Methods: In a retrospective cross-sectional study that was conducted between March 2012 and April 2013, a total of 48 strains of P...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/29282316/silk-based-multilayered-angle-ply-annulus-fibrosus-construct-to-recapitulate-form-and-function-of-the-intervertebral-disc
#9
Bibhas K Bhunia, David L Kaplan, Biman B Mandal
Recapitulation of the form and function of complex tissue organization using appropriate biomaterials impacts success in tissue engineering endeavors. The annulus fibrosus (AF) represents a complex, multilamellar, hierarchical structure consisting of collagen, proteoglycans, and elastic fibers. To mimic the intricacy of AF anatomy, a silk protein-based multilayered, disc-like angle-ply construct was fabricated, consisting of concentric layers of lamellar sheets. Scanning electron microscopy and fluorescence image analysis revealed cross-aligned and lamellar characteristics of the construct, mimicking the native hierarchical architecture of the AF...
December 27, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29279750/anterior-longitudinal-ligament-reconstruction-to-reduce-hypermobility-of-cervical-and-lumbar-disc-arthroplasty
#10
Ralph J Mobbs, Jia Xi Julian Li, Kevin Phan
Study Design: Retrospective case series. Purpose: This study aims to present the early clinical and radiological outcomes of anterior longitudinal ligament (ALL) reconstruction following disc arthroplasty. Overview of Literature: Although cervical and lumbar disc arthroplasty have entered the clinical setting, there are still concerns regarding the short and long term complications arising from hypermobility of current prosthesis designs. Reconstruction of the ALL is a potential solution to disc arthroplasty hypermobility...
December 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/29245588/validation-of-i-tethya-i-i-samaaii-i-ribeiro-amp-muricy-2011-replacement-name-for-the-sponge-i-tethya-i-i-rubra-i-samaai-amp-gibbons-2005-demospongiae-tethyida-tethyidae
#11
Toufiek Samaai, Mark J Gibbons, Guilherme Muricy
Tethya samaaii Ribeiro & Muricy, 2011 is a massive, irregularly globular or sub-spherical sponge with basal rooting processes or a disc-like attachment (Figure 1A). It was described from Oudekraal, on the west coast of South Africa as Tethya rubra Samaai & Gibbons, 2005 based on specimens collected during two surveys in 1996 (Samaai & Gibbons 2005). This species was later reported from Algoa Bay, on the southeast coast of South Africa by Waterworth et al. (2017).
November 14, 2017: Zootaxa
https://www.readbyqxmd.com/read/29245217/efficacy-and-safety-of-mobi-c-cervical-artificial-disc-versus-anterior-discectomy-and-fusion-in-patients-with-symptomatic-degenerative-disc-disease-a-meta-analysis
#12
Hui Lu, Lihua Peng
BACKGROUND: Total disc replacement (TDR) using Mobi-C cervical artificial disc might be promising to treat symptomatic degenerative disc disease. However, the results remained controversial. We conducted a systematic review and meta-analysis to compare the efficacy and safety of Mobi-C cervical artificial disc and anterior cervical discectomy and fusion (ACDF) in patients with symptomatic degenerative disc disease. METHODS: PubMed, EMbase, Web of science, EBSCO, and Cochrane library databases were systematically searched...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29245099/total-bilateral-tmj-reconstruction-for-pain-and-dysfunction-case-report
#13
Carlos Vinícius Ayres Moreira, André Victor Pinto Serra, Larissa Oliveira Ramos Silva, Ana Carolina Fraga Fernandes, Roberto Almeida de Azevedo
INTRODUCTION: Temporomandibular disorders encompass a set of clinical conditions that affect the temporomandibular joint, the masticatory muscles and the associated tissues. Many therapeutic alternatives can be considered, being divided into non-invasive, minimally invasive and invasive interventions. This work aims to report a case of inflammatory joint pain and dysfunction treated with bilateral TMJ full reconstruction with alloplastic prosthesis stock. CASE REPORT: Patient D...
December 8, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29222390/sodium-channel-remodeling-in-subcellular-microdomains-of-murine-failing-cardiomyocytes
#14
Mathilde R Rivaud, Esperanza Agullo-Pascual, Xianming Lin, Alejandra Leo-Macias, Mingliang Zhang, Eli Rothenberg, Connie R Bezzina, Mario Delmar, Carol Ann Remme
BACKGROUND: Cardiac sodium channel (NaV1.5) dysfunction contributes to arrhythmogenesis during pathophysiological conditions. Nav1.5 localizes to distinct subcellular microdomains within the cardiomyocyte, where it associates with region-specific proteins, yielding complexes whose function is location specific. We herein investigated sodium channel remodeling within distinct cardiomyocyte microdomains during heart failure. METHODS AND RESULTS: Mice were subjected to 6 weeks of transverse aortic constriction (TAC; n=32) to induce heart failure...
December 8, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29192178/characterisation-of-porous-knitted-titanium-for-replacement-of-intervertebral-disc-nucleus-pulposus
#15
Gauri Tendulkar, Vrinda Sreekumar, Frank Rupp, Arun K Teotia, Kiriaki Athanasopulu, Ralf Kemkemer, Alfred Buck, Alfred Buck, Hans-Peter Kaps, Jürgen Geis-Gerstorfer, Ashok Kumar, Andreas K Nussler
Effective restoration of human intervertebral disc degeneration is challenged by numerous limitations of the currently available spinal fusion and arthroplasty treatment strategies. Consequently, use of artificial biomaterial implant is gaining attention as a potential therapeutic strategy. Our study is aimed at investigating and characterizing a novel knitted titanium (Ti6Al4V) implant for the replacement of nucleus pulposus to treat early stages of chronic intervertebral disc degeneration. Specific knitted geometry of the scaffold with a porosity of 67...
November 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29186747/-volume-growth-of-inpatient-treatments-for-spinal-disease-analysis-of-german-nationwide-hospital-discharge-data-from-2005-to-2014
#16
Ulrike Nimptsch, Claire Bolczek, Melissa Spoden, Ekkehard Schuler, Josef Zacher, Thomas Mansky
Background Marked volume growth of inpatient treatments for spinal disease has been observed since diagnosis related groups (DRG) were introduced as payment for inpatient services in Germany. This study aims to analyse this increase by population and stratified by types of treatment. Material and Methods Using German nationwide hospital discharge data (DRG statistics), inpatient treatments for spinal disease with or without surgery were identified. Trends in case numbers were analysed from 2005 to 2014 with consideration of demographic changes, in order to explore which age groups and which types of treatment are affected by volume growth...
November 29, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/29181144/evaluation-of-electrospun-nanofiber-anchored-silicone-for-the-degenerative-intervertebral-disc
#17
M Khandaker, S Riahanizad
The nucleus pulposus (NP) substitution by polymeric gel is one of the promising techniques for the repair of the degenerative intervertebral disc (IVD). Silicone gel is one of the potential candidates for a NP replacement material. Electrospun fiber anchorage to silicone disc, referred as ENAS disc, may not only improve the biomechanical performances of the gel but it can also improve restoration capability of the gel, which is unknown. This study successfully produced a novel process to anchor any size and shape of NP gel with electrospun fiber mesh...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29180636/anterior-cervical-discectomy-and-fusion-surgery-versus-total-disc-replacement-a-comparative-study-with-minimum-of-10-year-follow-up
#18
Si-Dong Yang, Yan-Bo Zhu, Suo-Zhou Yan, Jun Di, Da-Long Yang, Wen-Yuan Ding
Based on long-term follow-ups, this study was designed to investigate the incidence and risk factors for postoperative adjacent segment degeneration (ASD) after anterior cervical discectomy and fusion (ACDF) or total disc replacement (TDR) in treating cervical degenerative diseases. Between January 2000 and December 2005, 108 cases undergoing ACDF and 78 undergoing TDR, were enrolled into this study. All medical records were retrospectively collected. Every patient was followed up at least 10 years. Outcome assessment included visual analogue scale (VAS) score, Neck Disability Index (NDI) score, Japanese Orthopaedic Association (JOA) score, and radiographic parameters...
November 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29179481/notochordal-cell-derived-extracellular-vesicles-exert-regenerative-effects-on-canine-and-human-nucleus-pulposus-cells
#19
Frances Bach, Sten Libregts, Laura Creemers, Björn Meij, Keita Ito, Marca Wauben, Marianna Tryfonidou
During intervertebral disc ageing, chondrocyte-like cells (CLCs) replace notochordal cells (NCs). NCs have been shown to induce regenerative effects in CLCs. Since vesicles released by NCs may be responsible for these effects, we characterized NC-derived extracellular vesicles (EVs) and determined their effect on CLCs. EVs were purified from porcine NC-conditioned medium (NCCM) through size exclusion chromatography, ultracentrifugation or density gradient centrifugation. Additionally, the EVs were quantitatively analyzed by high-resolution flow cytometry...
October 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/29176487/barriers-to-and-budget-impact-of-lumbar-total-disc-replacement-utilization
#20
Faheem Sandhu, Scott Blumenthal, Betsy Grunch, Bent Kimball, Nicole Ferko, Sarah Hollmann
: Evidence on the favorable efficacy, safety, and cost effectiveness of lumbar total disc replacement (TDR) compared with fusion for lumbar degenerative disc disease is mounting; however, a key barrier identified for TDR utilization is lack of coverage by US health insurers. Although economic considerations in a fee-for-service model should not be a determining factor in patient access, concerns regarding the budget impact of lumbar TDR surgery may unfortunately underlie coverage decisions. On the basis of the data available and economic modeling, the panel agreed that there is no indication that there would be a dramatic increase in patients seeking lumbar TDR...
December 15, 2017: Spine
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