نتایج جستجو برای: cold ceramic

تعداد نتایج: 128048  

2016
Shanchuan Zhang Penghua Ma Guanchao Wang Qiang Sun Lili Tian Lili Ma Baohua Xu

To systematically review the randomized controlled trials (RCTs) and compare the survival rates and complications of all-ceramic fixed dental prostheses (FDPs) with those of metal-ceramic FDPs. Eligible studies were retrieved in relevant electronic databases from their inception to June 8th, 2016. Then, quality of the included studies was assessed using Cochrane Collaboration’s tool. Heterogene...

2014
M. C. Wyatt S. Jesani C. Frampton P. Devane J. G. Horne

OBJECTIVES Our study aimed to examine not only the incidence but also the impact of noise from two types of total hip replacement articulations: ceramic-on-ceramic and ceramic-on-polyethylene. METHODS We performed a case-controlled study comparing subjective and objective questionnaire scores of patients receiving a ceramic-on-ceramic or a ceramic-on-polyethylene total hip replacement by a si...

2013
Pieter-Jan De Roo Franky Steenbrugge Martijn Raaijmaakers

We present a case of a 71-year-old woman with unexplained instability of her total hip arthroplasty 12 years after implantation due to loosening of the ceramic component of a sandwich ceramic in polyethylene liner. She experienced in total 2 dislocations in 6 months. These events occurred without fracture of the ceramic liner. Sandwich ceramic liners were introduced with the idea of combining t...

Journal: :Orthopedics 2013
Om Prakash Sharma Jasjit Lochab Yaron Berkovich Oleg A Safir Allan E Gross

This article describes a case of severe metallosis in a 67-year-old woman who initially underwent primary total hip arthroplasty with a ceramic-on-ceramic articular bearing. This was subsequently revised to a metal-on-polyethylene articulation due to ceramic liner fracture. She presented with severe hip pain and a pelvic mass. Infective workup was negative. Perforation of the cobalt-chrome femo...

Journal: :Journal of Advanced Ceramics 2023

Composite coatings or films with polytetrafluoroethylene (PTFE) are typically utilized to offer superhydrophobic surfaces. However, the surfaces usually have limited durability, and require complicated fabrication methods. Herein, we report successful integration of PTFE ZnO ceramic achieve superhydrophobicity via one-step sintering method, cold process (CSP), at 300 °C. (1-x) ZnO–...

2012
Myung-Sik Park

Early generation ceramic articulations were problematic in terms of ceramic implant fracture and wear. Although the mechanical properties of ceramic material have improved during the last three decades, ceramic component fracture remains an issue. Many authors have reported fractures of the ceramic head, and a few have described ceramic acetabular insert fracture. However, these complications a...

Journal: :Energies 2021

The vanadium-titanium black ceramic (VTBC) coating on all-ceramic solar collectors has both high absorptance (0.94) and emissivity (90%). However, the thermal conductivity of is very low (1.256 W/mK). To improve heat collection efficiency VTBC collectors, this paper establishes a mathematical model based energy-conservation relationships under steady-state conditions creates corresponding compu...

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