Rare Earth Oxide-containing Fluorescent Glass Filler for Composite Resin

Abstract

In recent dental care, esthetic restorative materials such as composite resin and porcelains have been widely used and studied. However, their good esthetics makes the visual inspection of restored teeth difficult. In this study, a fluorescent glass filler containing rare earth oxides, which are well-known fluorescent materials, was prepared and used in composite resin to add visual inspection ability with small change in color. The

Optical properties of manually and CAD/CAM-fabricated polymers

“…Several composite materials of the last generation imitate the physical luminescence properties of the dental hard tissues by adding fluorescent rare earth oxides (e.g. europium, cerium and ytterbium) into the glass fillers 23) . Therefore it can be assumed that the occurring differences in the fluorescence properties originate from the application of different rare earth elements and different amounts of them in the materials.…”

Fluorescence of composite resins: A comparison among properties of commercial shades

“…Consequently, composite restorations may match the color of a natural tooth when observed, for instance under daylight, by a dental unit lamp or by a combination of both, but may not match when the light source increases its UV or near UV-light excitation component. This way a mismatch of the composite filling with the adjacent natural tooth substance may clearly become apparent 14,15) . On the other hand, the demand for better diagnostic methods detecting esthetic restorations is increasing nowadays.…”

“…On the other hand, the demand for better diagnostic methods detecting esthetic restorations is increasing nowadays. Restorations made with composite resins (today the most common used restorative material in dentistry) can represent an increasing diagnostic challenge, as clinical composite visualization can become difficult or practically impossible under conventional clinical inspection procedures 14,[16][17][18][19][20][21] . To date diagnostic methods do not reach the desired diagnostic power needed, as past caries experience (i.e.…”

Fluorescence properties of commercial composite resin restorative materials in dentistry

“…In order to improve the esthetics of composites under all lighting conditions, rare earths oxides (e.g. europium, cerium and ytterbium) which are well-known fluorescent materials have been included in glass fillers as fluorescent additive 20) . Several composite materials of the last generation try to imitate, in this way, these physical luminescence properties of the dental substance, in order to increase the esthetic integration of the restoration.…”