BACKGROUND/AIM Metal-ceramic bond strength and alloys' elastic modulus clearly determine the potential of alloy application, because the ceramic integrity during mastication depends on these two characteristics. The aim of this study was to evaluate metal-ceramic bond strenght and elastic modulus of cobalt-chromium alloys in making porcelain-fused-to-metal restorations, regarding the applicatio...

We prove that for all but a certain number of abelian groups of order n the Davenport constant is atmost n k +k−1 for positive integers k ≤ 7. For groups of rank three we improve on the existing bound involving the Alon-Dubiner constant.

We prove that for all but a certain number of abelian groups of order n the Davenport constant is atmost n k +k−1 for positive integers k ≤ 7. For groups of rank three we improve on the existing bound involving the Alon-Dubiner constant.

The objective of our study was to evaluate the influence of prolonged artificial ageing on oxidation resistance and the subsequent wear behaviour of vitamin E-stabilized, in comparison to standard and highly cross-linked remelted polyethylene (XLPE), and the degradation effect of third-body particles on highly cross-linked remelted polyethylene inlays in total hip arthroplasty. Hip wear simulat...

OBJECTIVE To describe safety, tolerability, and effectiveness results through 5 years of follow-up of a Phase III trial with Essure inserts. DESIGN Multicenter, nonrandomized, single-arm international study (Canadian Task Force classification II-3). SETTING Thirteen clinical study centers in the United States, Europe, and Australia. PATIENTS A total of 518 previously fertile women seeking...

Quality control is an important issue in the ceramic tile industry. On the other hand maintaining the rate of production with respect to time is also a major issue in ceramic tile manufacturing. Again, price of ceramic tiles also depends on purity of texture, accuracy of color, shape etc. Considering this criteria, an automated defect detection and classification technique has been proposed in ...

BACKGROUND AND PURPOSE Ceramic heads are widely used in modern total hip arthroplasty (THA). Although a rare complication, fractures of ceramic heads are described in the literature, evoking uncertainties regarding the in vivo stability of this material, especially when impaction of a fractured ceramic head can lead to disastrous results. METHODS In this case report, we present a fracture of ...

In this paper nuclear techniques were used to describe the structural characteristics of ceramic samples. These samples were produced mainly with silica to simulate sandstones. Three sets of samples with different characteristics were analyzed using gamma ray transmission to obtain point by point porosity and X-ray microtomography to obtain the porosity, for 2D sections and the scanned bulk, as...

Fracture resistance of inlays and onlays may be influenced by the quantity of the dental structure removed and the restorative materials used. The purpose of this in vitro study was to evaluate the effects of two different cavity preparation designs and all-ceramic restorative materials on the fracture resistance of the tooth-restoration complex. Fifty mandibular third molar teeth were randomly...

Metal–ceramic systems represent a high-strength treatment associated with long-term success, but they have several disadvantages, mainly in terms of esthetics and biocompatibility. Over the past decade, a number of novel all-ceramic crown and bridge systems have been developed, with the capability of restoring anterior, posterior and multiple units. The search for new methods has been driven, i...