Fluorescence properties of commercial composite resin restorative materials in dentistry

Abstract

The objective was to assess the fluorescence properties of current commercial resin composites. Sixteen light-curing resin composites, representing a total number of 241 shades, were analyzed. Fluorescence measurements of all samples were taken using the monochromator-based fluorescence reader Synergy TM Mx (BioTek Instruments Inc.). Additionally, samples of dentin and enamel were analyzed for comparison. The mean of the maximum excitation wavelength was (398±5) nm and the mean of the resulting emission wavelength was (452±9) nm for all composite shades. The maximum fluorescence varied widely between 50 and 70,808 RFU with a mean of (28,948±15,380) RFU. The maximum for dentin was (9,308±3,676) RFU and enamel (5,467±506) RFU. The results showed that the analyzed composites fluoresced at nearly the same excitation-emission wavelengths combination but with varying optical intensities. These results provide useful reference for optimal fluorescence induction and may help to develop better fluorescence diagnostic methods needed for treatment, forensic investigations and epidemiological research/analyses.

Forensic applications: Fluorescence properties of tooth-coloured restorative materials using a fluorescence DSLR camera

“…This aligns with results of previous studies analyzing composite resin materials [11,23] which showed that optimal excitation wavelengths for the composite resin materials used in their studies were in the range of 365 -380nm and 398 ± 5 nm, respectively. Fluorescence properties of materials in the mouth can be affected by the ingress of moisture as well as by degradation over time.…”

Optical properties of manually and CAD/CAM-fabricated polymers

“…Although there are some differences in the fluorescence properties of the materials, it remains reserved, whether these differences have any influence on proper colour matching in clinical application 24) . This has to be investigated in further in vivo studies.…”

Avaliação da fluorescência das resinas compostas para esmalte e dentina de diferentes marcas comerciais

“…Essa diferença de achados pode ser atribuída às marcas comerciais escolhidas nos diferentes trabalhos, uma vez que apresentam diferentes composições [3] .…”

“…Entretanto, devido à mudança da iluminação, esses materiais se comportam de formas diferentes. Sendo assim, o cirurgião dentista necessita compreender como se manifestam os materiais restauradores e as estruturas dentais sob diferentes fontes de luz [3] .…”