In vitro evaluation of composite resin fluorescence after natural aging
| Autor: | Talissa-Mayer Garrido, Victor-Hugo-Fazoli Guidini, Ronaldo Hirata, Antonio-Medina Neto, Raquel-Sano-Suga Terada, Lidiane-Vizioli-de Castro Hoshino, Francielle Sato |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Molar 030103 biophysics Materials science Composite number Analytical chemistry Fluorescence spectrometry 03 medical and health sciences 0302 clinical medicine stomatognathic system Dentin medicine General Dentistry Enamel paint Research Esthetic Dentistry 030206 dentistry CIENCIAS MÉDICAS [UNESCO] Fluorescence Intensity (physics) Wavelength stomatognathic diseases medicine.anatomical_structure visual_art UNESCO::CIENCIAS MÉDICAS visual_art.visual_art_medium |
| Zdroj: | Garrido, Talissa-Mayer ; Hoshino, Lidiane-Vizioli-de Castro ; Hirata, Ronaldo ; Sato, Francielle ; Neto, Antonio-Medina ; Guidini, Victor-Hugo-Fazoli ; Terada, Raquel-Sano-Suga. In vitro evaluation of composite resin fluorescence after natural aging. En: Journal of Clinical and Experimental Dentistry, 12 5 2020: 461-467 RODERIC: Repositorio Institucional de la Universitat de Valéncia instname Journal of Clinical and Experimental Dentistry RODERIC. Repositorio Institucional de la Universitat de Valéncia |
| Popis: | Background Some composite resins contain luminophorous agents in order to reproduce tooth fluorescence. The objective of this study was to compare the fluorescence spectra emitted by composite resins with those of human enamel and dentin, and their emission behaviour after a 90-day natural aging period. Material and Methods Nine shades of the composite resins Z350XT/3M (XT), Opallis/FGM (OP) and Empress Direct/Ivoclar-Vivadent (ED) were analyzed. Five specimens (10.0 mm x 2.0mm) were fabricated for each shade. Enamel (5.0 mm x 0.30 mm) and dentin (5.0 mm x 1.0 mm) specimens were obtained from sound human third molars. Fluorescence spectra of human dentin and enamel as well as the composite specimens immediately after fabrication were measured at the excitation peaks of 375, 395 and 410 nm. To assess composite resin fluorescence intensity changes over time, measurements were conducted after 30, 60 and 90 days, at 395 nm. Differences in fluorescence intensity over time were analyzed with ANOVA and Tukey’s test (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|