Analysis of Flexural Strength and Monotonic Load to Failure Following Simulated Chairside Adjustments and Repair in a Lithium Disilicate Glass-Ceramic

Introduction: There are no studies regarding e.max Press that evaluate post-adjustment healing protocols and their effect on the load to failure in a clinically relevant test. It is essential to find the ultimate treatment protocol which will help clinicians preserve the physical properties of the ceramic restoration after adjustment. Material and Methods: The total number of samples used in this study was 440 IPS e.max press discs. The discs were 15 mm in diameter and 1 mm of thickness. The material was tested for flexural strength and monotonic load to failure. The test was done in two parts and with the same tests. The flexural strength contained 40 specimens per group while the load to failure group had 20 specimens per group. In the biaxial flexural test, the specimens were loaded at 0.5 mm/min until failure using a ring on ring arrangement and the biaxial strength was recorded. The monotonic load to failure specimens were cemented with a resin cement on epoxy resin blocks, and loaded with a 50-mm hemisphere at a cross head speed of 0.5 mm/min. The tests were performed on a universal testing machine (Instron). Weibull statistics determined intergroup differences. Results: In Part I: regarding the flexural strength tests, the Weibull plot and likelihood ratio contour plot revealed a significant difference between the control group and the other groups. Regarding the monotonic load to failure tests, the Weibull plot and likelihood ratio contour plot revealed no significant difference between the control and glazed groups. The diamond adjusted group was significantly different from the control group and the glazed group. In Part II: Regarding the monotonic load to failure, the Weibull plot and likelihood ratio contour plot revealed no significant difference between the tested groups. The strength of all the groups when subjected to glaze treatment after divesting increased in comparison with groups in Part I. Conclusions: Glazing treatment improved the physical properties of adjusted IPS e.max Press discs when subjected to biaxial flexural test and monotonic load to failure. When clinical adjustments are made on the IPS e.max Press intaglio surface, a subsequent glazing treatment is recommended

Marriner W. Merrill Family Foundation, Inc v. The State Tax Commission of Utah : Defendant\u27s Brief

On Writ of Certiorari from The State Tax Commission of Uta

Digital technology and governance in transition: The case of the British Library

Comment on the organizational consequences of the new information and communications technologies (ICTs) is pervaded by a powerful imagery of disaggregation and a tendency for ?virtual? forms of production to be seen as synonymous with the ?end? of bureaucracy. This paper questions the underlying assumptions of the ?virtual organization?, highlighting the historically enduring, diversified character of the bureaucratic form. The paper then presents case study findings on the web-based access to information resources now being provided by the British Library (BL). The case study evidence produces two main findings. First, radically decentralised virtual forms of service delivery are heavily dependent on new forms of capacity-building and information aggregation. Second, digital technology is embedded in an inherently contested and contradictory context of institutional change. Current developments in the management and control of digital rights are consistent with the commodification of the public sphere. However, the evidence also suggests that scholarly access to information resources is being significantly influenced by the ?information society? objectives of the BL and other institutional players within the network of UK research libraries

Ensuring Optimal Screen Time in Children (0 to 11 Years): Hacks and Heuristics

Excessive screen time has emerged as a significant threat to child health. This communication lists various hacks and heuristics that can be used for children of varying age groups, to optimize their screen time. This information is useful for all health care professionals who manage children and/or counsel their patients

Ensuring Optimal Screen Time in Children (0 to 11 Years): Hacks and Heuristics

Excessive screen time has emerged as a significant threat to child health. This communication lists various hacks and heuristics that can be used for children of varying age groups, to optimize their screen time. This information is useful for all health care professionals who manage children and/or counsel their patients

Making Hay While the Sun Shines: Answering the Urgency in Audiovisual Preservation

Many twentieth-century audiovisual formats are becoming obsolete and/or the physical carriers are deteriorating, warranting the need to digitize this content as soon as possible. Balancing efficiency and urgency with digitization and digital storage resources is a challenging endeavor. This article documents the efforts of the L. Tom Perry Special Collections (LTPSC) at Brigham Young University to begin a systematic effort to digitize audiovisual content found in manuscript collections