Portal de Periódicos da CAPES

In vivo color stability of resin-veneered telescopic dentures: A double blind pilot study

1997; Elsevier BV; Volume: 77; Issue: 5 Linguagem: Inglês

10.1016/s0022-3913(97)70141-0

1097-6841

J Setz, Eva Engel,

Dental Erosion and Treatment

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 ▵E increased by approximately 2 units each year. No statistically significant differences were found between the materials. (J Prosthet Dent 1997;77:486-91.)