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. 2022 May 31:2022:2011864.
doi: 10.1155/2022/2011864. eCollection 2022.

Optical Property Stability of Light-Cured versus Precured CAD-CAM Composites

A C M Andrade  1 , A B Borges  1 , E C Kukulka  1 , S E Moecke  1 , N Scotti  2 , A Comba  2 , C R Pucci  1 , C R G Torres  1
Affiliations

Optical Property Stability of Light-Cured versus Precured CAD-CAM Composites

A C M Andrade et al. Int J Dent. .

Abstract

Objective: The aim of this study was to evaluate the optical property changes after staining of precured (PC) and light-cured (LC) composites.

Materials and methods: Specimens were prepared using different LC composites (GrandioSO-Voco, Filtek Z350-3M/ESPE, Opallis-FGM, and Kalore-GC) and four PC blocks (Grandio Blocs-Voco, Lava Ultimate-3M ESPE, Brava Block-FGM, and Cerasmart-GC) from the same manufacturers (n = 20). Baseline color, gloss, translucency, and fluorescence were evaluated. The staining protocol was performed for 15 days, and the final optical properties were reevaluated.

Results: The changes in each property were calculated (ΔGloss, ΔTranslucency, ΔFluorescency, ΔE ∗ 00). Data were analyzed by ANOVA and Tukey's test (α = 5%). Changes in all properties were observed after staining for all materials, with darkening and reduction of gloss, fluorescence, and translucency. Nonsignificant differences were observed between the light-cured and precured materials of the same manufacturer for ΔG and ΔT, but significant differences existed for ΔF and ΔE ∗ 00. For ΔF, the only significant differences were observed between Brava Block and Opallis (smaller). For ΔE ∗ 00, only the light-cured composites GrandioSO and Z350 showed significantly less change than the corresponding blocks. Precured composites were affected the same way as light-cured ones by the staining in relation to the reduction of gloss and translucency.

Conclusion: A higher reduction in fluorescence was observed for only one brand of block and was similar for the others. The two brands of light-cured materials showed less staining, while for the others, the staining was similar. The effects of staining vary according to the composite formulation.

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Conflict of interest statement

No potential conflicts of interest relevant to this article were reported by the authors.

Figures

Figure 1
Figure 1
Means (SD) of gloss (GU) for all groups before and after staining.
Figure 2
Figure 2
Means (SD) of translucency (TP) for all groups before and after staining.
Figure 3
Figure 3
Means (SD) of fluorescence for all groups before and after staining.
See this image and copyright information in PMC

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