Tibial anatomical landmarks for transverse plane rotation of the tibial tray have not been validated. The current authors propose aligning the tibial tray with both the anterior tibial center point of rotation (ATCPR) and the femoral trochlear groove (FTG) to establish the ideal tibial tray rotation in total knee arthroplasty (TKA). When the tibial tray centerline was aligned with ATCPR and FTG...

The keel design of the tibial tray is essential for the transmission of the majority of the forces to the peripheral bone structures, which have better mechanical proprieties, thus reducing the risk of loosening. The aim of the present study was to compare the behaviour of different tibial tray designs submitted to torsional forces. Four different tibial components were modelled. The 3-D recons...

Aseptic loosening of the tibial component is the major complication of total knee arthroplasty. There is an association between early excessive shear micromotion between the bone and the tray of the tibial component and late aseptic loosening. Using non-linear finite element analysis, whether a tibial tray with a circumferentially flanged rim and a mating cut in the proximal tibia could minimiz...

The salt quality was studied by dewatering methods such as centrifugal hydro extraction, fixed bed dryer, and rotary drum dryer. effect of different particle sizes also analyzed. extractor is found to be effective when reducing the high-water content suitable for water after wash stage. Fixed dryers produce lower than dryers. A 1% can achieved using Finally, all extractors, dryers, are producti...

BACKGROUND Accurate impression making is an essential prerequisite for achieving a passive fit between the implant and the superstructure. The aim of this in vitro study was to compare the three-dimensional accuracy of open-tray and three closed-tray impression techniques. MATERIALS AND METHODS Three acrylic resin mandibular master models with four parallel implants were used: Biohorizons (BI...

Using sie®e-tray air stripping as a means of remo®ing contaminants from surfactant solutions was studied to determine if tray air stripping can be applied successfully to treating surfactant-containing wastewaters and, if so, to de®elop a quantitati®e approach for designing tray air-stripping systems for treating surfactant-containing wastewaters. High-concentration surfactant solutions were pr...

STATEMENT OF PROBLEM Impressions are made using high-viscosity putty vinyl polysiloxane impression materials in conjunction with disposable plastic stock trays. The impression materials have been shown to be dimensionally stable. However, it remains unclear if the disposable plastic stock trays are rigid enough to resist deformation thus yielding potentially unreliable results. PURPOSE This s...

The 3-way tray technique is popular as it provides master and opposing arch impressions and an interocclusal record at the same time. Excellent clinical results can be achieved with appropriate case selection, use of rigid tray and impression materials, attention to tray positioning and other details throughout the process, and clear understanding of the limitations of the technique by the oper...

The objective of the paper is to present modifications done in hy brid gr eenhouse solar dryers make them more efficient. As we re developed ov ercome various limitations other types dryers. Due dryers, effect on heat transfer parameters like coefficient, drying time, efficiency, etc. studied and also encapsulated paper. It found that most hybrid maximum temperature chamber around 65–80°C. This...