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In vivo color stability of resin-veneered telescopic dentures: a double blind pilot study
Statement Of Problem:
Discoloration is a major disadvantage of resin veneers on telescopic dentures. In vitro color measurements with large and flat samples of resin veneer composites have been published, but no in vivo data are available.
Purpose:
This study describes the discoloration of resin veneers in vivo by use of spectrophotometry and the L*a*b* system of the Commission Internationale de L'Eclairage (CIE).
Methods:
In a clinical evaluation of this technique, two composite veneer materials were compared in 18 patients.
Results:
Both brands discolored significantly after 1 year. While L* and a* were not changed significantly, b* and the total color difference delta E increased by approximately 2 units each year. No statistically significant differences were found between the materials.