By Carlos P. Bergmann, Aisha Stumpf
This e-book offers an creation to the mechanical habit and degradation of dental ceramics and courses the reader via their functionality less than influence of oral environments. It addresses different types of dental ceramics, their homes, degradation and mechanical facets with much less emphasys at the physics and chemistry concerned, which makes the analyzing attention-grabbing for newcomers within the box. In each one bankruptcy, the reader will know about the mechanical habit of dental ceramics and every phenomenon excited by their software, in addition to discovering a few functional examples in their use in dental clinics, their production techniques and kinds of deterioration. The transparent language and the application-oriented point of view of the e-book makes it appropriate for either pros and scholars who are looking to know about dental ceramics.
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Extra resources for Dental Ceramics: Microstructure, Properties and Degradation (Topics in Mining, Metallurgy and Materials Engineering)
This method, however, can generate heat and pulp necrosis. There is also a third possibility: the use of ultrasound for debonding. Despite causing little risk of tooth fracture, however, the technique is time consuming and causes wear on the tip of the devise, turning it more expensive. The last, suggested method is debonding by Laser, which would provide atraumatic, safe and fast removal. Fig. 4 Fracture Clinical and experimental data show that the most frequent causes of failure in bioceramic materials are fractures, especially in ceramic brackets.
8 shows EDS-mappings of distinct chemical elements (C, O, Al, Si, K, and Mg) in an alumina-feldspar dental ceramic. X-ray diffraction is the main method used to identify crystalline phases in materials. Advances in this technique, especially in detection and counting systems and X-ray tubes, have enabled not only the identification of phases, but also quantitative analysis and the determination of crystal size and distribution. Other characteristics of ceramic materials, such as residual stresses in the cracks, can also be evaluated through X-ray.
Angle Orthod. 73(2), 167–175 (2003) Chapter 5 Microstructure of Ceramic Materials The properties of ceramics depend on their microstructure, which is defined by the type, size, morphology, distribution, orientation and composition of the phases present and by the interface between the grains. In the latter case, a thick or thin layer of amorphous material may be found, originating from sintering additives. The variables involved can barely be controlled in an adequate manner, which makes it difficult to predict the final properties of a porcelain with a reasonable degree of reliability.