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Clinical Oral Investigations
Erschienen in: Clinical Oral Investigations 1/2009

01.03.2009 | Original Article

Effect of tree types of light-curing units on 5-year colour changes of light-cured composite

verfasst von: Onjen Tak, Subutay Han Altintas, Nilgun Ozturk, Aslihan Usumez

Erschienen in: Clinical Oral Investigations | Ausgabe 1/2009

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Abstract

The purpose of this study was to determine colour changes in a composite cured with tungsten-halogen, light-emitting diode (LED) or a plasma arc after 5 years. Five specimens 10 mm in diameter and 2 mm in height were prepared using Hybrid (Clearfil AP-X) composite for each test group. The corresponding specimens were cured with a tungsten-halogen curing light, a LED unit or with a plasma arc. Specimens were stored in light-proof boxes for 5 years after the curing procedure to avoid further exposure to light and stored in 37°C in 100% humidity. Colorimetric values of the specimens immediately after curing and after 5 years were measured using colorimeter. The ΔE* ab values varied significantly depending on the curing unit used (p < 0.001). Curing time did not affect the colour changes of the specimens (p = 0.4). The results of this study suggest that composite materials undergo measurable changes due to the curing unit exposure.
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Metadaten
Titel
Effect of tree types of light-curing units on 5-year colour changes of light-cured composite
verfasst von
Onjen Tak
Subutay Han Altintas
Nilgun Ozturk
Aslihan Usumez
Publikationsdatum
01.03.2009
Verlag
Springer-Verlag
Erschienen in
Clinical Oral Investigations / Ausgabe 1/2009
Print ISSN: 1432-6981
Elektronische ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-008-0221-9

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