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Title: The translucency of dental composites investigated by UV-VIS spectroscopy

Translucency is the property of a material to partially transmit and diffuse incident light, and can be described as a partial opacity or a state between complete opacity and complete transparency. The purpose of this study is to evaluate the translucency index of resin composites according to their chemical structure and to the light source used for curing. Our study was achieved on four commercial composite samples (30 mm × 2 mm) cured with two different lamps (Optilux - halogen bulb and Ultralight - LED). Measurements were made with a UV-VIS spectrophotometer, and the reflection spectrum was recorded in the 380-770 nm region on white and black, compared with a SPECTRALON standard white. For all materials cured with the LED lamp on the glossy sides, the best results were given by Tetric Evo Ceram followed by Filtek Supreme, Restacril{sup RO} and Premise. The measurements made on samples cured with an Optilux lamp, to the smooth and rough sides of the samples, revealed that the highest index of translucency is provided by Tetric Evo Ceram on the smooth side, followed by Filtek Supreme, Restacril{sup RO} and Premises. We can say that the translucency of the composites is mostly determined by themore » chemical composition of the material, which is observed from transmittance values recorded for each sample, and by the source of radiation applied on the sample.« less
Authors:
 [1] ;  [2] ; ; ; ; ;  [3]
  1. Babes Bolyai University -Raluca Ripan Chemistry Research Institute, Cluj-Napoca (Romania)
  2. Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca (Romania)
  3. Babes Bolyai University - Raluca Ripan Chemistry Research Institute, Cluj-Napoca (Romania)
Publication Date:
OSTI Identifier:
22257175
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1565; Journal Issue: 1; Conference: PIM 2013: International conference on processes in isotopes and molecules, Cluj Napoca (Romania), 25-27 Sep 2013; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CHEMICAL COMPOSITION; HALOGENS; LIGHT BULBS; LIGHT SOURCES; OPACITY; REFLECTION; SPECTRA; SPECTROSCOPY