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Hardness Test on Dental Ceramics

Hardness Test on Dental Ceramics

Dental ceramics used as filling materials or as restorative materials must, in addition to health and visual considerations, satisfy requirements regarding strength, wear and durability.

Visual requirements can be catered for by replicating the light effects of
natural mineral dental enamel, including opalescence, fluorescence, transparency, through layers of color of varying intensity.

Strength properties can, for example, be verified by means of hardness testing. Due to limited reflectivity, the optical hardness testing method to Vickers can only be employed to a restricted degree.

However the instrumented indentation test, based on measurement of indentation depth, has proved very effective, as other mechanical characteristics in addition to hardness can be derived from the entire test sequence, for example allowing creep or relaxation of the dental material to be measured.

Typical Product for this Application



Hardness Testing on a Dental Ceramics

Fully automatic Zwick hardness testing machine with a motorized displacement unit. Härteprüfung an ...
Video 00:01:15
52_Hardness_Testing_on_a_Dental_Ceramics.wmv (7.4 MB)


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