In this study, we evaluated in vitro the staining susceptibility of an infiltration resin (Icon, DMG, Hamburg, Germany) and compared it with several marketed bonding systems. Fifty 1-mm-thick disk-shaped specimens were prepared for Icon and for each bonding material. Initial specimen color was assessed by a spectrophotometer. Specimens in each group were then randomly divided into five sub-groups and stored in an incubator at 37˚C in the dark for 60 days. Groups 4 and 5 were used as negative controls by being stored dry and in tap water respectively. Test groups were stored in (1) coffee, (2) tea, or (3) red wine. After 60 days of storage, new spectrophotometric measurements were performed and dE (color difference) was calculated to determine color change. Icon showed higher staining susceptibility. The clinician should be aware of the staining potential of infiltration resins over time.

Objective The aim of this article is to describe an easy technique for managing small superfi cial defects in light to medium fl uorosis. Method and materials The proposed technique is based on a selective abrasion of the superfi cial enamel and a recreation of the superfi cial macro and micro morphology. The aesthetic appearance can be enhanced by power or home bleaching. Results The presented technique can manage enamel defects which are confi ned in the most external enamel surface with satisfying aesthetic results. Conclusions This conservative approach may be considered an interesting alternative to more invasive prosthetic techniques based on composite reconstructions or ceramic veneers, minimising invasivity, chairside time and costs for patients.

No abstract