Int Poster J Dent Oral Med 20 (2018), OMD/PDA 15. Jan. 2019
Int Poster J Dent Oral Med 20 (2018), OMD/PDA (15.01.2019)
Supplement, Poster 2029, Language: English
Fluorescence of Feldspathic Ceramic and Flowable Resins
Pereira, Joana Cunha / Poeiras, Luís / Reis, José Alexandre / Martins, Francisco / Di Paolo, Roberto / Fuentes, Victoria / Maurício, Paulo Durão
Introduction: The final result of a rehabilitation is determined by the color and thickness of the ceramic, by the cement and by the color of dental substrate. Fluorescence consists of a spontaneous emission of visible light in the blue spectrum after absorption of light in the ultraviolet spectrum.
Objectives: To evaluate in vitro the fluorescence changes of feldspathic ceramic when used with different flowable resins.
Materials and methods: Sixty samples of A2 colored feldspathic ceramic with two different thicknesses were produced. As a substrate, 60 discs of composite resin were produced. The samples were cemented and adhered to the composite resin with 2 flowable resins. The results of the fluorescence spectra were obtained with a spectrofluorometer. For statistical analysis we used the two-way ANOVA, with p <0.05.
Results: The group with the highest fluorescence emission is the group cemented with G-aenial Flo A3, thickness of 0.5 mm, with a value of 2.47E06 a.u. The group with the lowest fluorescence emission intensity is the group cemented with G-aenial Flo A2, thickness 0.8mm, with a value of 1.59E06 a.u.
Discussion: The fluorescence emission intensity of the flowable resins may influence the final behavior of the ceramic restoration. The thickness of the ceramic influences the fluorescence.
Conclusions: Different cements have different fluorescence emissions. Clinical Implications: The optical properties of the cements are as important as those of ceramics. The aesthetics of a ceramic restoration depends on the type of cement used.
Keywords: Fluorescence, ceramics, flow resins, oral rehabilitation
27th Annual Meeting of the Portuguese Dental Association 2018 (OMD)
08.-10. November 2017
Exponor, Porto, Portugal