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Taotao Xu, Yangjun Lao, Jitao Wang, Fucun Liu, Luwei Xiao, Peijian Tong
BACKGROUND: The purpose of this study was to evaluate the mid-term results of an Oxford phase-3 unicompartmental knee arthroplasty (UKA) for medial arthritis in Chinese patients. METHODS: The study included 64 patients who underwent a minimally invasive Oxford phase-3 UKA for medial knee arthritis. The patients were clinically evaluated preoperatively and at the final follow-up according to the clinical and functional components of the Knee Society Score (KSS), the Hospital for Special Surgery knee score and range of motion...
April 2017: ANZ Journal of Surgery
Ravi Chauhan
DATA SOURCES: Embase, Medline, Cochrane Central, Biomed Central and Open Grey databases and bibliographies of identified studies. STUDY SELECTION: Randomised controlled trials investigating humans with primary caries lesions receiving operative treatment involving caries removal and restoration, with minimum two treatment groups comparing different cavity treatments before restoration (no lining versus lining) were included. DATA EXTRACTION AND SYNTHESIS: Data were extracted independently by two reviewers and study quality assessed using the Cochrane risk of bias tool...
March 2016: Evidence-based Dentistry
Soong Joon Lee, Hong Suk Kwak, Jeong Joon Yoo, Hee Joong Kim
We evaluated the short-term to midterm results of reoperation with bearing change to metal-on-polyethylene (MoP) after ceramic bearing fracture in ceramic-on-ceramic total hip arthroplasty. Nine third-generation ceramic bearing fractures (6 heads and 3 liners) were treated with bearing change to MoP. Mean age at reoperation was 52.7 years. Mean follow-up was 4.3 years. During follow-up, 2 of 3 liner-fractured hips and 1 of 6 head-fractured hips showed radiologic signs of metallosis and elevated serum chromium levels...
January 2016: Journal of Arthroplasty
Li-hua Ouyang, Ye Zhuang, Ke-wei Liu, Zhen-yu Chen, Peng Gu
Rainout from wet-stack took placed in many thermal power plants with WFGD system. Research on causes of the rainout is important to solve the problem. The objective of this research is to analyze the mechanism of rainout. Field study was performed to collect experimental data in one thermal power plant, including the amount of desulfurization slurry carried by wet flue gas, liquor condensate from wet duct, and droplets from the wet stack. Source apportionment analysis was carried out based on physical and chemical data of liquid sample and solid sample...
June 2015: Huan Jing Ke Xue= Huanjing Kexue
Elham Baladi, Justin G Pollock, Ashwin K Iyer
Extraordinary transmission (ET) through a periodic array of subwavelength apertures on a perfect metallic screen has been studied extensively in recent years, and has largely been attributed to diffraction effects, for which the periodicity of the apertures, rather than their dimensions, dominates the response. The transmission properties of the apertures at resonance, on the other hand, are not typically considered 'extraordinary' because they may be explained using more conventional aperture-theoretical mechanisms...
August 10, 2015: Optics Express
Bog Ja Jeoung, Yang Chool Lee
Frailty is a disorder of multiple inter-related physiological systems. It is unclear whether the level of physical performance factors can serve as markers of frailty and a sign. The purpose of this study was to examine the relationship between frailty and physical performance in elderly women. One hundred fourteen elderly women participated in this study, their aged was from 65 to 80. We were measured 6-min walk test, grip-strength, 30-sec arm curl test, 30-sec chair stand test, 8 foot Up- and Go, Back scratch, chair sit and reach, unipedal stance, BMI, and the frailty with questionnaire...
August 2015: Journal of Exercise Rehabilitation
Yves Aurégan, Vincent Pagneux
The acoustic propagation in lined flow duct with purely reactive impedance at the wall is considered. This reacting liner has the capability to reduce the speed of sound, and thus to enhance the interaction between the acoustic propagation and the low Mach number flow ( M≃0.3). At the lower frequencies, there are typically four acoustic or hydrodynamic propagating modes, with three of them propagating in the direction of the flow. Above a critical frequency, there are only two propagating modes that all propagate in the direction of the flow...
August 2015: Journal of the Acoustical Society of America
Mercedes Regadío, Ana I Ruiz, Manuel Rodríguez-Rastrero, Jaime Cuevas
The performance of a widely distributed natural clay to attenuate contaminants released from an old landfill was investigated. The objective is to evaluate its potential use as a barrier for waste containment systems. Core samples of the natural clay were collected below the landfill and their parameters distribution with depth was determined. Partition coefficients, retardation factors and percentage values of pollutants concentrations, revealed a rapid decrease of contaminants with depth. The background values of the pollutants were below the maximum limits for drinking and irrigation water and with no need of reactors, collectors, aeration or recirculation systems...
December 2015: Waste Management
George K Karidakis, Theofilos Karachalios
BACKGROUND: Osteolysis resulting from wear debris production from the bearing surfaces is a major factor limiting long-term survival of hip implants. Oxidized zirconium head on crosslinked polyethylene (XLPE) is a modern bearing coupling. However, midterm in vivo wear data of this coupling are not known. QUESTIONS/PURPOSES: The purpose of this study was to investigate in vivo whether the combination of an oxidized zirconium femoral head on XLPE produces less wear than a ceramic head on XLPE or a ceramic head on conventional polyethylene (CPE) couplings and whether any of these bearing combinations results in higher hip scores...
December 2015: Clinical Orthopaedics and related Research
Bita Shareghi, Per-Erik Johanson, Johan Kärrholm
BACKGROUND: Highly cross-linked polyethylene infused with vitamin E (E-poly) was developed to increase oxidative resistance without affecting mechanical properties. We evaluated this type of polyethylene in a randomized clinical study that used radiostereometric analysis. Our objective was to compare the early-term femoral head penetration of an E-poly liner with that of a heat-treated polyethylene liner, ArComXL. We hypothesized that the clinical outcome at two years following total hip arthroplasty would be unaffected by the choice of polyethylene...
August 19, 2015: Journal of Bone and Joint Surgery. American Volume
Mayila Abudoukelimu, Zhen-Yan Fu, Yang Xiang, Yi-Tong Ma, Qing Zhu, Minawaer Abudu, Dilare Adi, Yi-Ning Yang, Xiao-Mei Li, Xiang Xie, Fen Liu, Bang-Dang Chen
BACKGROUND: Hypercholesterolemia is one of the most common risk factors for Coronary Artery Disease (CAD), which is the leading cause of death worldwide. As Numb is an important regulating factor regarding intestinal cholesterol absorption and plasma cholesterol level, the aim of the present study is to investigate the relationship between human Numb gene polymorphism and cholesterol level in Chinese subjects. METHODS: All participants came from the First Affiliated Hospital of Xinjiang Medical University (Male: 1052 and Female: 596), and four tagging SNPs (rs2108552, rs12435797, rs1019075 and rs17781919) of Numb gene were genotyped by using TaqMan assays and analyzed in an ABI 7900HT Fast Real-Time PCR System...
2015: Diagnostic Pathology
Lado Davidović, Mirjana Ćuk, Marija Živković Sandić, Djurica Grga, Slavoljub Živković
INTRODUCTION: The study included application of liners and dental composites in to cavities of six experimental animals-rabbits (Oryctolagus cuniculus). OBJECTIVE The aim of the study was to investigate rabbit dental pulp response to different liners. Methods Cavity preparation for class V were made on the maxillary central incisors and one lower incisor, while the second lower incisor served as a control tooth. These teeth were restored with the use of one of the following liners--Calcimol LC, ANA Liner and Fuji II LC Improved, and Ceram-X mono dental composite...
May 2015: Srpski Arhiv za Celokupno Lekarstvo
Ji-Yeon Lee, Jin-Seok Kim, Chung-Ju Hwang
OBJECTIVE: The aim of this study was to compare the shear bond strength (SBS) of orthodontic brackets bonded to zirconia surfaces using three different zirconia primers and one silane primer, and subjected to thermocycling. METHODS: We designed 10 experimental groups following the surface treatment and thermocycling. The surface was treated with one of the following method: no-primer (NP), Porcelain Conditioner (PC), Z-PRIME Plus (ZP), Monobond Plus (MP) and Zirconia Liner Premium (ZL) (n=20)...
July 2015: Korean Journal of Orthodontics
Lin Xu, Hui Zhao, Jian Qiu, Wei Zhu, Hongqiang Lei, Zekun Cai, Wan-Hua Lin, Wenhua Huang, Heye Zhang, Yuan-Ting Zhang
One of the purposes of cardiac rehabilitation (CR) after acute coronary syndrome (ACS) is to monitor and control weight of the patient. Our study is to compare the different obesity indexes, body mass index (BMI), and waist circumference (WC), through one well-designed CR program (CRP) with ACS in Guangzhou city of Guangdong Province, China, in order to identify different effects of BMI and WC on organ damage. In our work, sixty-one patients between October 2013 and January 2014 fulfilled our study. We collected the vital signs by medical records, the clinical variables of body-metabolic status by fasting blood test, and the organ damage variables by submaximal exercise treadmill test (ETT) and ultrasonic cardiogram (UCG) both on our inpatient and four-to-five weeks of outpatient part of CRP after ACS...
2015: BioMed Research International
A A Aldaeef, M T Rayhani
Compacted clay liners (CCLs) are commonly used as hydraulic barriers in several landfill applications to isolate contaminants from the surrounding environment and minimize the escape of leachate from the landfill. Prior to waste placement in landfills, CCLs are often exposed to temperature fluctuations which can affect the hydraulic performance of the liner. Experimental research was carried out to evaluate the effects of daily thermal cycles on the hydraulic performance of CCLs under simulated landfill conditions...
October 1, 2015: Journal of Environmental Management
Kulshrest Singh, Rajaram Naik, Srinidhi Hegde, Aftab Damda
BACKGROUND: This in vitro study is intended to compare the shear bond strength of recent self-etching primers to superficial, intermediate, and deep dentin levels. MATERIALS AND METHODS: All teeth were sectioned at various levels and grouped randomly into two experimental groups and two control groups having three subgroups. The experimental groups consisted of two different dentin bonding system. The positive control group consisted of All Bond 2 and the negative control group was without the bonding agent...
2015: Journal of International Oral Health: JIOH
Larissa Marinho Azevedo, Leslie Carol Casas-Apayco, Carlos Andres Villavicencio Espinoza, Linda Wang, Maria Fidela de Lima Navarro, Maria Teresa Atta
UNLABELLED: Interface integrity can be maintained by setting the composite in a layering technique and using liners. OBJECTIVE: The aim of this in vitro study was to verify the effect of resin-modified glass-ionomer cement (RMGIC) lining and composite layering technique on the bond strength of the dentin/resin adhesive interface of lateral walls of occlusal restorations. MATERIAL AND METHODS: Occlusal cavities were prepared in 52 extracted sound human molars, randomly assigned into 4 groups: Group 2H (control) - no lining + two horizontal layers; Group 4O: no lining + four oblique layers; Group V-2H: RMGIC lining (Vitrebond) + two horizontal layers; and Group V-4O: RMGIC lining (Vitrebond) + four oblique layers...
May 2015: Journal of Applied Oral Science: Revista FOB
Paola Taddei, Silvia Tozzi, Simone Carmignato, Saverio Affatato
This study was aimed at determining the surface degradation occurred on retrieved ceramic and metallic heads, as well as the influence of the head surface quality on the wear of the polyethylene counterface. To this purpose, 14 ceramic and 14 metallic femoral heads retrieved at revision surgery were examined. Scanning electron microscopic analysis provided visual evidence that some metallic heads presented crescent wear more often than the ceramic ones; the former showed a higher volumetric loss (as determined by Coordinate Measuring Machine) than the latter, but less negative Rsk values...
October 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
Tariq F Alghazzawi, Gregg M Janowski
The aim of this study was to determine if accelerated aging of porcelain veneering had an effect on the surface properties specific to a tetragonal-to-monoclinic transformation (TMT) of zirconia restorations. Thirty-six zirconia samples were milled and sintered to simulate core fabrication followed by exposure to various combinations of surface treatments including as-received (control), hydrofluoric acid (HF), application of liner plus firings, application of porcelain by manual layering and pressing with firing, plus accelerated aging...
September 2015: International Journal of Oral Science
Kamal Bali, Richard W McCalden, Douglas D R Naudie, Steven J MacDonald, Matthew G Teeter
BACKGROUND: Although it is understood that backside damage occurs in polyethylene acetabular liners, the effect of highly crosslinked polyethylene, which has completely replaced conventional polyethylene, has yet to be examined. QUESTIONS/PURPOSES: The purpose of this study was to answer the following questions: (1) With conventional polyethylene (CPE), did the acetabular design make a difference in backside wear? (2) Is there a difference in backside damage between CPE and crosslinked polyethylene (XLPE) liners? (3) With XLPE, is the difference in backside wear between designs still present? (4) Is there any difference in backside damage in various zones on backside of individual liners? METHODS: This single-institution retrieval analysis involved visual damage scoring on the backside of 233 polyethylene liners implanted between 2002 and 2011...
February 2016: Clinical Orthopaedics and related Research
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