This study is focused on two ceramic materials, D.SING (Ivoclar) and VM13 (emphasis the VITA TN), frequently used in restorative dentistry practice and it comes to complete a full set of results obtained by the authors over several years of research on oral tribology with main influence on oral health. In this way there are involved more specific structural aspects of dental restorative ceramic materials quality as is shown in [1].
Dental medicine represents a very important part of our life. As our appearance or looks is a major concern for us, a beautiful smile can improve our life. Moreover, our teeth health reflects on our overall health. This paper presents a method for highlighting the differences between a natural tooth and a prosthetic one. In order to determine the stress distribution in teeth during the use of prosthetics pivots, several virtual geometric models of the teeth were created (canine, first premolar, first molar and second molar), both in their natural form and when using pivots. The results obtained from these analyses were compared in order to reveal the behavior of a prosthetic tooth during normal life loads. Such results of real life behavior can be used by dental medics in order to predict the life span of restored teeth.
The term Internet of Things as a component of Future Internet is a recent fast growing global network infrastructure which extends Internet with a sensors and actuators shield. The paper presents a hands-on learning kit based on an open standard embedded computer connected to Internet enabling live data processing. The system uses cloud programming tools to add significant value to the education purpose, by including up-to-date innovative technical approaches and pedagogical values for improving the attractiveness and efficiency of the education activities in the engineering area. The learning goal intends to develop the Internet of things as new universe based on smart objects, connected to the Internet via adequate sensors and actuators. This can be an essential tool for a deeper understanding of the main concepts in physics, informatics and math, even in the early steps of learning. Based on cloud programming resources, the hardware-software components use the latest version of low power 32-bit embedded computer development platform and process interfaces to allow data monitoring, remote physical experiments, mobile world supervising, and collaborative project development. As an open standard learning tool, the kit offers a new computational framework able to serve in scientific experiments and discovery-based learning. This study was strongly motivated by the European Union recommendation to support and enrich the university curriculum by engaging students in hands-on engineering and design activities.
During conventional finishing textile processes it is necessary a big consumption both of water and energy. This aspectsare is imposed by the development process of thermo and mass transfer of finishing agents into the textile structure materials applied in dentistry (fibers, yarns, fabric, nonwovens). The intensification of transfer processes into the textile materials is realized in conventional finishing textile industry (washing, cleaning, and coloring) by using high work temperature. The negative result of this intervention and the presence of chemical substances without degradation mean the environment pollution by the pour out residual water with a great quantity of toxic substances. The recently laboratory scientific research showed that the use of ultrasonic systems in finishing textile materials contributes both to the acceleration of thermo and mass transfer and to the decreasing of active chemical substances. In this way the paper presents a finishing system based on ultrasonic processes which is composed by modules and specific hardware components.
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