Author/Authors :
hashemikamangar, sedighe sadat tehran university of medical sciences - dental research center, dentistry research institute, tehran, iran , valizadeh, sara tehran university of medical sciences - school of dentistry - department of operative dentistry, tehran, iran , mahmoudi nahavandi, alireza institute for color science and technology - color imaging and color image processing department, tehran, iran , hasani tabatabaei, masoomeh tehran university of medical sciences - school of dentistry - department of operative dentistry, tehran, iran , daryadar, marzieh tehran university of medical science - school of dentistry - department of operative dentistry, tehran, iran
Abstract :
objectives: this study aimed to develop a new method for measurement of florescence and compare the fluorescence of some clinical dental ceramics in different thicknesses. materials and methods: forty-eight samples of feldspathic (vita vm9, a2), ips e.max (ivoclar ht, a2), zirconia (korox zircostar, a2) and enamic (vita a2) ceramics were used in this study in 0.5 and 1 mm thicknesses. the fluorescence of the samples was measured by using a developed technique. the results were analyzed by twoway anova and duncan post-hoc test. p 0.05 was considered significant. results: enamic, feldspathic and e.max ceramics had significantly different fluorescence in descending order (p=0.000). fluorescence of ceramics increased with an increase in their thickness from 0.5 to 1 mm (p=0.007). conclusion: the results confirmed the applicability of the presented method for measurement of fluorescence of dental ceramics. while, the thickness of restoration determines the concentration of the fluorescent agent, some additional technical information is required for justification of the observed trend in the studied ceramics.
Keywords :
fluorescence , ceramics , zirconium oxide , vita enamic
