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Too high, and the risk of thermal necrosis 4 and BCIS 5 increase; too low, and the cementbone interface provides more reduced shear strength, as well as a higher risk of aseptic loosening and revision over time. 6 High intrusion also reduces the amount of bone stock remaining in the event of revision. 7 Importantly, the high intrusion of ...
Jun 02, 2017· The results show that the C/S ratio changes in the interface of cement and polymeric fibers and is largely affected by the functional group of the polymers. The results are then used to propose a more realistic molecular dynamics model for CSH in the vicinity of the three most used polymeric fibers: polypropylene, polyvinyl alcohol, and nylon ...
The fracture toughness of implant/cement interfaces is a mechanical property that measures the resistance to propagation of a crack originated at the interface. Our previous research [ 6 ] reported that the addition of the micron and nano sized MgO particles to PMMA improved the fracture toughness of bone/cement union due to increased surface ...
cement interface [9,10]. Variable intrinsic bone cement properties as well as extrinsic differences from varying cement preparation and application techniques are among many factors that effect the strength and stability of the bone– cement–implant construct. Polymerization of bone cement progresses
interface behavior of deformed bar in cementsoil mixture. It is known that the strength of a cementsoil mixture depends mainly on cement content, water content, and curing period with respect to a certain amount of tobetreated soft soils [1,11,16].
The absence of adhesive failure between cement and PMMA block used in this study suggested that the model used in the current study was reliable in testing the postcement interface. To our knowledge, the PMMA blocks used in this study have not been used in any previous study to investigate the bond strength of the postcement interface.
at the cementbone interface may appear as radiolucent lines and is usually attributed to poor penetration of the cement into the Failure for the cementimplant interface may be due to the poor interfacial strength of the cement to the Definitions • Dough time – the change in physical condition of the cement identified ...
Feb 17, 1994· Factors affecting bone cement interface adhesion. J Biomed Mater Res. 1980; 14:639651. 9. Raab S, Ahmed AM, Provan JW. The quasistatic and fatigue performance of implant/bone cement interface. J ...
Aug 27, 2019· Shear experiments were conducted on the cement mortar–sandstone bonding interface and the materials themselves to investigate their loss of shear strength and the deterioration mechanism caused by freezing and thawing cycles. The experimental results show that the shear strength of the bonding interface is much lower than that of the original materials themselves under the same normal .
The cement–bone interface plays an important role in load transfer between cemented implant systems and adjacent bone, but little is known about the micromechanical behavior of this interface following in vivo service. Small samples of postmortem‐retrieved cement–bone specimens from cemented total hip replacements were prepared and ...
ABB is at the center of the digital transformation with its system, ABB Ability™ Expert Optimizer, part of its dedicated digital portfolio of solutions for the cement industry. Other systems include ABB Ability™ Cement Optimize, as well as its readytouse tailormade automation solution for mining and cement, ABB Ability™ System ...
We investigated the adherence of two cementitious materials, calcium phosphate cement (CPC) and silica flour‐filled class G cement (CGC), to metal substrates, such as cold‐rolled steel (CRS), stainless steel (SS), electroplated zinc‐coated steel (EZS), and zinc phosphate‐coated steel (ZPS) after autoclaving at 200°C.
Jul 01, 2020· The casingcementformation interface radial bond strength was tested. • The tensile stress on the casingcementformation interface was studied by ABAQUS. • The experiment and simulation results were combined to provide suggestions and measures for ensuring the integrity of cement ring interface.
Cementsoil mixture is generally produced in situ by wet/dry soil mixing or jet grouting. Fig. 1a illustrates the phase composition for typical cementsoil is noteworthy that the water content of cementsoil mixture depends on three factors: (a) the method of cement introduction (dry powder or slurry); (b) the moisture condition of the natural soil; (c) the undergoing degree of the ...
was no difference in constraint of implant (P = ), cement type (P = ), patella resurfacing (P = ), age (P = ), (P = ) or initial mechanical axis deviation (P = ) between groups. Discussion The main findings of this study were that there was a high prevalence of early PPRL at the implant–cement interface ...
Jan 10, 2008· Introduction. The cement–bone interface is one of the critical factors for the longevity of cemented THA. Cementing technique has improved with the advent of cement guns, pulsatile lavage, and intramedullary bone plugs for the femur [12–14], and flanged sockets for the acetabulum [].Multiple small anchoring holes in the acetabulum improve the mechanical bonding at the cement–bone interface.
cement microstructure. High frequency (1 GHz) studies identified reaction zones around bubbles, ettringite formation, and effects of aggregate composition. Lower frequency images (200–400 MHz) have been used to characterize effects of aggregate composition on cement/grain interface. The information obtained from acoustic microscopy complements
Beck, J, Feng, R, Hall, DM, Buyuksagis, A, ZiomekMoroz, M Lvov, SN 2016, Effects of H 2 S and CO 2 on cement/casing interface corrosion integrity for cold climate oil and gas well applications. in RG Buchheit S Virtanen (eds), Corrosion General Session. 17 edn, ECS Transactions, no. 17, vol. 72, Electrochemical Society Inc., pp. 107122 ...
The densities inside the bonecement interface at −3 mm are significantly lower for the voidcreating procedures: % ± % for vertebral stenting and % ± % for balloon kyphoplasty compared with % ± % for RF kyphoplasty and % ± % for shield kyphoplasty (P < .0001) . It is noteworthy that no trabecular structures are ...
May 18, 2018· Stresses in the cement‐cup interface were generally higher than the stress in the trabecular bone‐cement interface (by %, %, and 11% for the 28, 32, and 36 mm head sizes respectively for the average weight patient and by %, %, and % for the 28, 32, and 36 mm head sizes respectively for the overweight patient) but lower ...
cement indiasand cement interface . cement grinding process in gwalior india cement grinding process in gwalior india cement mill at bhatinda grinding mill equipment cement grinding process in gwalior india Ltd and 2 50 000 No of equity shares to the Gwalior Rayon Silk Mfg WVG A new cement grinding mill of 1 25 MTPA was commissioned in 2014 .
Farran (1) was among the first to note that the interface formed between aggregate and ''_ulk" cement paste was not sharp, and that the cement paste in contact with the a_m''egate differed from the ''_ulk" cement paste. Barnes et al. (2,3) and more recently Yuan and Odler
Factors affecting the cementpost interface. Dent Mater. 2012; 28(3):28797 (ISSN: ) Zicari F; De Munck J; Scotti R; Naert I; Van Meerbeek B. OBJECTIVES: To evaluate the effect of different factors on the pushout bond strength of glass fiber posts luted in simulated (standard) root canals using different composite cements.
Jul 15, 2020· In this study, a method is proposed for modifying aggregate with Bayer red mud (RM), and the bond strength and microstructure of the interfacial trans.
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