The Influence of Certain Dietary Factors on the Colour Durability of Composite Prosthetic Materials

The objective of this study was to suggest the use of spectrophotometrical method for mesurement, controll and predict the discoloration of prosthetic materials. The discoid samples of ceromer Targis (Ivoclar) and the ceramic composite Gradia (GC) were placed in coffee, tea and dark fruit juice of pH ranging from 4 to 8. Measurements were conducted with a spectrophootometer Specol (Carl Zeiss)) used to measure the monochromatic coefficients of reflected light. Direct measurements were used to determine colour coefficients