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Metal alloys in the oral cavity
Tomka, Milan ; Procházková, Jarmila (advisor) ; Erdelský, Ivan (referee) ; Vaněk, Jiří (referee)
1 Summary For many years it was assumed that dental materials have almost no side effects except for very rare cases of allergic reactions. Adverse effects of dental materials are considered to be rare and exceptional. Low incidence of these reactions results from their high corrosion resistance and low toxicity. However, modern dental materials allowed a replacement of former metal dental materials, and thus allow a more detailed investigation of potential harmful effects. Due to the low incidence of adverse effects dental practitioners are not adequately experienced in this area, which results in underestimation or overestimation of potential risks. It is believed that dental materials do not cause systemic reactions and generalized manifestations are considered to be unique. Clinical manifestations of intolerance to dental materials are usually local. Reaction to dental material in direct contact with oral mucosa is considered to be the most common etiological factor of oral lichenoid reactions. It is usually caused by dental amalgam, less often by alloys containing nickel, gold, chromium, and palladium. Aim The aim of the study is to assess the relationship between white lesions of the oral mucosa (lichenoid lesions, leukoplakia, etc.) and potential irritation by dental materials. The long-term effect...
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From a Living Tradition to the Theory: Comments on the Origin of the Term ‘Zahušťování’ in Janáček’s Terminology
Procházková, Jarmila
The contribution of Czech composer Leoš Janáček (1854–1928) to music theory has been appreciated especially in the field of harmony. Within the context of music theory, Janáček's ideas on the 'thickness' of harmonic material first appeared in his study O skladbě souzvukův a jejich spojův (On the Construction of Chords and their Connections) in 1896. The term became fully developed and frequently used in his Úplná nauka o harmonii (The Complete Harmony Theory) in 1920. The origin and the use of the term by Janáček can be documented in connection with his experience with and discoveries from traditional folk music.
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