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https://www.readbyqxmd.com/read/29458200/influence-of-treatment-modality-on-morbidity-and-mortality-in-periprosthetic-femoral-fracture-a-comparative-study-of-71-fractures-treated-by-internal-fixation-or-femoral-implant-revision
#1
S Cohen, X Flecher, S Parratte, M Ollivier, J N Argenson
INTRODUCTION: The incidence of periprosthetic femoral fracture is constantly increasing, with high associated morbidity and mortality. Surgical treatment is guided by the Vancouver classification, but the influence of type of treatment on morbidity and mortality has been little analyzed. The theoretic advantage of implant revision over internal fixation is that it should allow earlier weight-bearing, although the impact of this on morbidity and mortality and autonomy has not been demonstrated...
February 16, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29458084/severe-pulmonary-embolism-secondary-to-cement-embolism-in-the-inferior-vena-cava-after-percutaneous-vertebroplasty
#2
Zhaoshun Yuan, Yangzhao Zhou, Xinmin Zhou, Xiaobo Liao
Cement pulmonary embolism (cPE) and inferior vena cava embolism (cIE) are rare but potentially life-threatening complications of percutaneous vertebroplasty (PVP). Most cPE and cIE occur simultaneously. In this case, a 65-year-old woman complained of dyspnea after PVP for 4 days. The patient's symptom and image tests manifested that the cPE was secondary to cIE. Even though the cIE was found on the first day after PVP, local surgeons treated the patient with a regular anticoagulant instead of more effective therapeutic measures...
February 16, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29457311/bicuspid-axial-wall-height-effect-on-cad-cam-crown-fracture-mode-on-preparations-containing-advanced-total-occlusal-convergence
#3
Matthew Miller, Nicholas DuVall, John Brewster, Michael N Wajdowicz, Ashley Harris, Howard W Roberts
PURPOSE: To evaluate bicuspid axial wall height effect on the fracture mode of adhesively luted, all-ceramic CAD/CAM crowns with a 20° total occlusal convergence (TOC). MATERIALS AND METHODS: Recently extracted premolars were randomly divided into 4 groups (n = 12) with all-ceramic crown preparations accomplished using a high-speed handpiece inserted into a milling device. Specimens were prepared containing occlusogingival axial wall heights of 3, 2, and 1 mm as well as a group containing a flat preparation surface with no axial wall height...
February 18, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29455485/-risk-factors-of-non-surgical-vertebral-fracture-after-percutaneous-kyphoplasty-of-single-segment-thoracolumbar-fracture
#4
Jian Wu, Yue-Hong Guan, Sheng-Li Fan
OBJECTIVE: To investigate the risk factors of non-surgical vertebral fracture after percutaneous kyphoplasty (PKP) in patients with single segment thoracolumbar osteoporotic vertebral compression fracture(OVCF). METHODS: The clinical data of 219 patients with single segment thoracolumbar osteoporotic vertebral compression fracture underwent percutaneous kyphoplasty from January 2010 to December 2015 were retrospectively analyzed. There were 29 cases in non-surgical vertebral body fracture group with 7 males and 22 females aged (67...
September 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29455481/-mid-term-follow-up-and-coping-strategies-of-bone-cement-leakage-after-percutaneous-kyphoplasty
#5
Qi-Cai Sun, Xuan-Liang Ru, Bai-Shan Song, Qun-Li Duanmu
OBJECTIVE: To retrospectively analyze the clinical data of 17 patients with bone cement leakage after percutaneous kyphoplasty and explore the leakage type and mid-term clinical effects. METHODS: The clinical data of 17 patients with osteoporotic vertebral compression fractures occurred bone cement leakage after percutaneous kyphoplasty from October 2011 to October 2016 were collected. There were 7 males and 10 females, aged from 68 to 87 years old with an average of 78 years...
September 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29455349/application-of-washed-mswi-fly-ash-in-cement-composites-long-term-environmental-impacts
#6
Zhenzhou Yang, Sicong Tian, Lili Liu, Xidong Wang, Zuotai Zhang
In the present study, long-term environmental impacts of compact and ground cement composites, in which 30 wt.% of cement was replaced by washed municipal solid wastes incineration (MSWI) fly ash, were investigated for use in building industry. Consecutive leaching tests over a time span of 180 days were performed in acid water, deionized water, and saline water, respectively, with the accumulative concentration of different elements determined in the leachate. Different leaching behaviors are observed among different potential toxic elements (PTEs)...
February 17, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29455043/ultra-early-injection-of-low-viscosity-cement-in-vertebroplasty-procedure-for-treating-osteoporotic-vertebral-compression-fractures-a-retrospective-cohort-study
#7
Zhao-Fei Zhang, Dong-Hua Liu, Pei-Yu Wu, Chun-Liang Xie, Feng-Wei Qin, He Huang
OBJECTIVE: To evaluate the clinical effect of ultra-early injection (before the phase of "tooth-paste-like") of low-viscosity cement in percutaneous vertebroplasty (PVP) for treating osteoporotic vertebral compression fractures (OVCFs). METHODS: Two hundred sixty-one patients who had PVP procedures with low-viscosity cement (ultra-early injection: 145, normal injection: 135) were included from July 2010 to July 2016 in our hospital. Visual Analog Scale (VAS), Oswestry Disability Index (ODI), Cobb angle, cement leakage, and adjacent vertebral fractures were evaluated...
February 15, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29454279/bonding-of-composite-cements-to-zirconia-a-systematic-review-and-meta-analysis-of-in-vitro-studies
#8
REVIEW
Putsadeeporn Thammajaruk, Masanao Inokoshi, Shanley Chong, Massimiliano Guazzato
OBJECTIVES: The aim of this study was to systematically review the literature and statistically analyze bond strength data to identify the influence that composite cements, type of test methodology, chemical and mechanical pre-treatments have on the bond strength of composite cements to zirconia in three different artificial aging conditions. METHODS: The literature was electronically searched in MEDLINE, PUBMED, EMBASE, and SCOPUS to select relevant articles that evaluated the bond strength between zirconia and composite cements...
February 8, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29454245/associations-of-household-renovation-materials-and-periods-with-childhood-asthma-in-china-a-retrospective-cohort-study
#9
Jialing Zhang, Chanjuan Sun, Wei Liu, Zhijun Zou, Yinping Zhang, Baizhan Li, Zhuohui Zhao, Qihong Deng, Xu Yang, Xin Zhang, Hua Qian, Yuexia Sun, Jan Sundell, Chen Huang
BACKGROUND: Childhood asthma is prevalent in China. However, there is a lack of evidence on whether household renovation, including the materials used and the periods, are associated with the disease. OBJECTIVES: To investigate the associations between household decoration materials and renovation periods, and childhood asthma and its related symptoms. METHODS: During 2010-2012, a retrospective cohort study was initiated in seven cities of China, and 40,010 children, aged 3-6 years, were recruited...
February 14, 2018: Environment International
https://www.readbyqxmd.com/read/29454122/rope-jumping-induced-traumatic-compression-fractures-the-underestimated-danger-of-repetitive-axial-load-forces
#10
Tobias A Mattei
The author describes a case of a non-osteoporotic adult presenting with multilevel compression fractures at the apex of the thoracic kyphosis after strenuous rope jumping. MRI demonstrated diffuse bone marrow changes in the vertebral bodies with only a very small unilateral endplate fracture. Besides highlighting the oftentimes neglected role of repetitive sub-pathological axial load forces in traumatic spinal injuries, the observed imaging pattern substantiates previous experimental studies which demonstrated that under cyclic axial loading the initial damage occurs in the cancellous regions of the bone (with observation of microscopic/50-100 μM long cracks), ultimately leading to a reduction in its elastic modulus...
February 14, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29453026/assessment-of-titanium-metallization-thin-film-deposited-on-alumina-substrate-microstructure-and-nano-indentation
#11
Xuegang Xing, Hefeng Wang, Gesheng Xiao, Shangyu Yang, Xuefeng Shu
Surface titanium (Ti) metallization was conducted on alumina (Al 2 O 3 ) through chemical vapor deposition (CVD) method derived from non-contact pack cementation. The effects of different deposition temperature (1000 °C, 1050 °C, and 1100 °C) were examined in this scenario. The morphology, phase composition, and interfacial defects of the resulting films were systematically investigated through scanning electron microscopy, energy dispersive spectrometry, and X-ray diffraction. The nanomechanical characterization of the proposed thin films was evaluated by conducting nano-indentation tests at different depths...
February 1, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29453009/advances-in-concrete-materials-for-sewer-systems-affected-by-microbial-induced-concrete-corrosion-a-review
#12
REVIEW
Cyrill Grengg, Florian Mittermayr, Neven Ukrainczyk, Günther Koraimann, Sabine Kienesberger, Martin Dietzel
Microbial induced concrete corrosion (MICC) is recognized as one of the main degradation mechanisms of subsurface infrastructure worldwide, raising the demand for sustainable construction materials in corrosive environments. This review aims to summarize the key research progress acquired during the last decade regarding the understanding of MICC reaction mechanisms and the development of durable materials from an interdisciplinary perspective. Special focus was laid on aspects governing concrete - micoorganisms interaction since being the central process steering biogenic acid corrosion...
February 6, 2018: Water Research
https://www.readbyqxmd.com/read/29451939/reverse-shoulder-arthroplasty-in-the-weight-bearing-versus-non-weight-bearing-shoulder-mid-term-outcomes-with-minimum-5-year-follow-up
#13
Derek J Cuff, Brandon G Santoni
This retrospective review evaluated the mid-term outcomes of cemented reverse shoulder arthroplasty in patients who use the shoulder for weight bearing (WB) vs non-weight-bearing (NWB) patients. Twenty-five shoulders of 21 patients who used their upper extremity for WB (WB group) were treated with cemented reverse shoulder arthroplasty and followed for a minimum of 5 years postoperatively (average, 73 months). Seventy-five consecutive shoulders of 72 patients who were NWB (NWB group) were treated and matched for duration of follow-up (average, 72 months) to serve as a control group...
February 16, 2018: Orthopedics
https://www.readbyqxmd.com/read/29451931/nonsurgical-management-of-peri-implant-bone-loss-induced-by-residual-cement-retrospective-analysis-of-six-cases
#14
Emanuele De Martinis Terra, Marco Berardini, Paolo Trisi
This report presents six consecutive cases of peri-implantitis associated with residual methacrylate cement. The cases responded to cement removal and disinfection procedures. Six patients, each presenting one methacrylate cement-retained implant restoration and showing peri-implant inflammation and bone loss, were treated. All the cases were negative for bleeding on probing after 6 weeks, and this was maintained at 1 year of follow-up from nonsurgical therapy and crown refixation with alternative and resorbable cement...
February 16, 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29451649/the-effects-of-different-restorative-materials-on-periodontopathogens-in-combined-restorative-periodontal-treatment
#15
Sila Çagri Isler, Gonen Ozcan, Gülcin Akca, Zahide Kocabas
Objective The aim of the study was to evaluate the association between subgingival restorations and the target periodontopathogenic bacteria (Pg, Td and Pi) in subgingival biofilm during one year after combined restorative-periodontal treatment. Material and Methods Seventeen systemically healthy subjects, who were positive for the presence of three cervical lesions associated with gingival recessions in three different adjacent teeth, were included in the study. A total of 51 combined defects were treated with connective tissue graft plus a nanofilled composite resin (NCR+CTG), a resin-modified glass ionemer cement (RMGI+CTG) and a fluoride-releasing resin material with pre-reacted glass (PRG), called giomer (Giomer+CTG)...
2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29448880/migration-and-clinical-outcome-of-mobile-bearing-versus-fixed-bearing-single-radius-total-knee-arthroplasty
#16
Koen T Van Hamersveld, Perla J Marang-Van De Mheen, Huub J L Van Der Heide, Henrica M J Van Der Linden-Van Der Zwaag, Edward R Valstar, Rob G H H Nelissen
Background and purpose - Mobile-bearing total knee prostheses (TKPs) were developed in the 1970s in an attempt to increase function and improve implant longevity. However, modern fixed-bearing designs like the single-radius TKP may provide similar advantages. We compared tibial component migration measured with radiostereometric analysis (RSA) and clinical outcome of otherwise similarly designed cemented fixed-bearing and mobile-bearing single-radius TKPs. Patients and methods - RSA measurements and clinical scores were assessed in 46 randomized patients at baseline, 6 months, 1 year, and annually thereafter up to 6 years postoperatively...
February 16, 2018: Acta Orthopaedica
https://www.readbyqxmd.com/read/29448759/multi-c-bn-coatings-by-r-f-diode-sputtering-and-investigation-of-wear-behavior
#17
Sung-Tae Park, Jeon-Geon Han, M Keunecke
Cubic boron nitride (c-BN) films on tool substrates are tendency to delaminate. Therefore, many research groups have studied improvement of c-BN synthesis method and deposition processes due to many potential applications. In this paper, we show that the adhesion property of c-BN layer system can be improved by deposing multi c-BN layers. The multi c-BN layers were deposited by r.f (13.56 MHz) diode sputtering apparatus on cemented carbide tool substrates with a TiAlN adhesion layer. For industrial applications, we performed turning and milling experiments under dry and high speed cutting conditions...
March 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29448144/nanocements-produced-from-mesoporous-bioactive-glass-nanoparticles
#18
Min Sil Kang, Na-Hyun Lee, Rajendra K Singh, Nandin Mandakhbayar, Roman A Perez, Jung-Hwan Lee, Hae-Won Kim
Biomedical cements are considered promising injectable materials for bone repair and regeneration. Calcium phosphate composition sized with tens of micrometers is currently one of the major powder forms. Here we report a unique cement form made from mesoporous bioactive glass nanoparticles (BGn). The nanopowder could harden in reaction with aqueous solution at powder-to-liquid ratios as low as 0.4-0.5 (vs. 2.0-3.0 for conventional calcium phosphate cement CPC). The cementation mechanism investigated from TEM, XRD, FT-IR, XPS, and NMR analyses was demonstrated to be the ionic (Si and Ca) dissolution and then reprecipitation to form Si-Ca-(P) based amorphous nano-islands that could network the particles...
February 3, 2018: Biomaterials
https://www.readbyqxmd.com/read/29447310/retrospective-evaluation-of-factors-related-to-the-outcomes-of-regenerative-therapy-for-implants-affected-by-peri-implantitis
#19
Stuart J Froum, Paul S Rosen, Wendy Cw Wang, Scott H Froum, Shalin Vinayak
The aim of this retrospective study was to examine the histories of 100 patients with 170 implants that were consecutively treated and reported in a previous study to identify which patient and implant factors might have affected the outcomes of therapy. Patient factors included history of periodontitis, hypertension, cardiac problems, rheumatoid arthritis, smoking, and penicillin allergy. Implant factors included whether the prosthesis was cemented or screw retained and initial bone loss (≤ 50% or > 50% of implant length)...
March 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29446542/novel-calcitonin-gene-related-peptide-chitosan-strontium-calcium-phosphate-cement-enhanced-proliferation-of-human-umbilical-vein-endothelial-cells-in-vitro
#20
Tiancheng Lv, Wei Liang, Li Li, Xu Cui, Xiaomou Wei, Haobo Pan, Bing Li
Bone cement materials have some disadvantages, including slow degradation and no biological activity, which greatly weakens their clinical application. Therefore, the search for a multifunctional bioactive bone cement has become urgent. In this study, a novel bone cement sample of calcitonin gene-related peptide (CGRP)/chitosan-strontium (Sr)-calcium phosphate cement (CPC) was developed. The structure and morphology were observed by scanning electron microscope (SEM). The cytotoxicity and proliferation of CGRP/chitosan-Sr-CPC were also measured...
February 15, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
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