title: [The determination of mechanical properties of hard tissue surfaces in microareas by means of mechano-electrical methods].
abstract: The resistance of surfaces of hard tissue against chemical attacks e.g. acids can be measured with high spacial specifity by electro-mechanical registration of surface topograms. Apart from this property of hard substance, important in connection with the development of caries, the sample principle of measurement can be used in vitro on dental surfaces to obtain other important measurements. Examples are given to show how the hardness is determined by the summation of elastic and plastic properties. It is shown how far during the usual measurements for hardness of impressions the duration of the process and the time elapsed before measurement can influence the results.
mesh_terms: D000143:Acids; D003743:Dental Enamel; D003804:Dentin; D006245:Hardness Tests / Q000379:methods; D006801:Humans; D013499:Surface Properties; D014088:Tooth Permeability
chemical_list: D000143:Acids
vernacular_title: Die Bestimmung mechanischer Materialeigenschaften von Hartgewebsoberflächen in Mikrobereichen mit mechano-elektrischen Untersuchungensmethoden.