Strength and aging resistance of monolithic zirconia: an update to current knowledge

Publication date: December 2020Source: Japanese Dental Science Review, Volume 56, Issue 1Author(s): Eleana Kontonasaki, Panagiotis Giasimakopoulos, Athanasios E. RigosAbstractNew zirconia compositions with optimized esthetic properties have emerged due to the fast-growing technology in zirconia manufacturing. However, the large variety of commercial products and synthesis routes, make impossible to include all of them under the general term of “monolithic zirconia ceramics”. Ultra- or high translucent monolithic formulations contain 3–8 mol% yttria, which results in materials with completely different structure, optical and mechanical properties. The purpose of this study was to provide an update to the current knowledge concerning monolithic zirconia and to review factors related to strength and aging resistance. Factors such as composition, coloring procedures, sintering method and temperature, may affect both strength and aging resistance to a more or less extend. A significant reduction of mechanical properties has been correlated to high translucent zirconia formualtions while regarding aging resistance, the findings are contradictory, necessitating more and thorough investigation. Despite the obvious advantages of contemporary monolithic zirconia ceramics, further scientific evidence is required that will eventually lead to the appropriate laboratory and clinical guidelines for their use. Until then, a safe suggestion should be to utilize high-str...
Source: Japanese Dental Science Review - Category: Dentistry Source Type: research

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DiscussionThe interventions of education and medication alerts resulted in a significant increase in the percentage of patients receiving appropriate doses of dilTIAZem and a nonsignificant decrease in the incidence of hypotension. This process-oriented intervention resulted in an improvement in appropriate dilTIAZem doses at our site. Rate control was not statistically significantly different between the 2 groups. Long-term sustainability of this intervention requires further study.
Source: Journal of Emergency Nursing - Category: Nursing Source Type: research
ConclusionsVitamin D insufficiency was prevalent in both newly diagnosed axSpA patients and healthy controls. There was no association between vitamin D and pain and disease activity in the newly diagnosed axSpA patients. Monitoring vitamin D levels is important and early intervention for vitamin D insufficiency is needed, especially in female patients.
Source: International Journal of Nursing Sciences - Category: Nursing Source Type: research
ConclusionVacuum assisted dressing is more effective than traditional wound dressing in wound healing of open fractures.
Source: International Journal of Orthopaedic and Trauma Nursing - Category: Nursing Source Type: research
This study aims to reflect on the process of adoption of the preprints publication model, briefly delimiting its history and current use by the national and the international scientific community. Departing from the literature and a consultation of preprint repositories, this reflection intends to highlight the main challenges that preprint implementation will face in the Nursing area, along with its specificities. While considering its benefits for scientific dissemination, this study points out the difficulties that may arise from the implementation of mostly north-American science models in a peripheral country such as ...
Source: Revista da Escola de Enfermagem da USP - Category: Nursing Source Type: research
RESUMO Objetivo Identificar na literatura a avalia ção da qualidade dos serviços de Atenção Primária à Saúde sob a ótica de cuidadores de crianças por meio da aplicação do PCATool, versão infantil. Método Revisão integrativa realizada nas bases de dados MEDLINE, CINAHL, LILACS, BDENF e Web of Science. Resultados Foram selecionados 17 artigos. Todos os estudos incluídos eram descritivos (100%) e possuíam nível de evidência IV (100%). O componente grau de afiliação (média=7,...
Source: Revista da Escola de Enfermagem da USP - Category: Nursing Source Type: research
CONCLUSIONS: Neonatal screening with the red reflex is not sufficient to detect intraocular disease. A normal neonatal red reflex does no exclude intraocular disease. It has a specificity of nearly 90%, but its sensitivity is only 56%. Most retinal haemorrhages are undiagnosed as they cannot be detected with a red reflex. PMID: 31826811 [PubMed - as supplied by publisher]
Source: Archivos de la Sociedad Espanola de Oftalmologia - Category: Opthalmology Tags: Arch Soc Esp Oftalmol Source Type: research
Reaction to claims of study misconduct have dominated the press and social media since the report dropped earlier this week.Medscape Medical News
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At least 1,300 people have died from the flu so far this season, according to a preliminary estimate released Friday by the US Centers for Disease Control and Prevention.
Source: CNN.com - Health - Category: Consumer Health News Source Type: news
Researchers have developed a self-cleaning plastic wrap that repels bacteria -- and could be used to prevent the transfer of antibiotic resistant superbugs, and other forms of dangerous bacteria.
Source: CNN.com - Health - Category: Consumer Health News Source Type: news
There is evidence that an ancient Chinese form of martial arts improves your mind and body, and may even contribute to a longer life.
Source: CNN.com - Health - Category: Consumer Health News Source Type: news
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