Color Change Evaluation of Three Universal Resin Composites after Storage in Water: An In Vitro Study

Akgül, Sinem; Gündoğdu, Ceyda

doi:10.1177/23202068221099100

Cited by 2 publications

(1 citation statement)

References 38 publications

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“…Four dental composites for wide color matching were selected and purchased. These filling materials were Omnichroma PLT (Tokuyama Dental, Tokyo, Japan) [3,4], Filtek Universal (3M, St. Paul, USA) [5], ArtOral Chroma Fill (R-dental, Hamburg, Germany) [6], and Venus Pearl One (Kulzer, Hanau, Germany) [7].…”

Section: Sample Preparationmentioning

confidence: 99%

Hard x-ray nanotomography of dental composites for wide color matching

Tripkis,

Humbel,

Deyhle

et al. 2024

Bioinspiration, Biomimetics, and Bioreplication XIV

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Caries affects billions of individuals worldwide, thus pointing out the importance of advancements in restorative dentistry. Dental resin composites yield restorations with satisfying mechanical properties, therefore the focus of development has shifted to accelerated treatments and esthetic aspects. Challenges in matching tooth color arise due to limited options, application changes, and color variations over time. Single-shade composites with the 'chameleon effect' adapt their color to the surrounding enamel by closely matching the tooth's optical spectrum, enhancing color blending. Structural color, based on light interference, contributes to this effect. The study investigates the submicron filler particles' impact on optical properties and the chameleon effect. Four single-shade dental resin composite materials were investigated. Needle-like samples about 100 μm in diameter were prepared and imaged in a scanning electron microscope. Light transmission through the materials for wavelengths between 200 and 900 nm was measured using a spectrophotometer. Threedimensional nanotomography data were obtained through transmission X-ray microscopy at the ANATOMIX beamline, Synchrotron SOLEIL, France in both absorption and Zernike phase contrast mode with 23 nm voxel size. The real space information was complemented with small-angle X-ray scattering. These experiments revealed substantial differences in the microscopic structure of the materials. In the case of Omnichroma, the filler consists of almost identical spheres with a diameter of 260 nm while Filtek Universal exhibits polydisperse, irregularly shaped fillers. Additionally, Venus Pearl One's fillers have a polyhedral shape and a wide size distribution. Finally, the setups used did not reveal any clearly identified microstructure of the Chroma Fill composite. Although all investigated materials are known to exhibit the chameleon effect, their differences in micro-and nanostructure call into question previous hypotheses on the chameleon effect's origin from structural color. While we have now a reasonable understanding of filler morphology, size distribution and spatial arrangement, more information is needed on the exact chemical composition of filler and matrix and their interaction with electromagnetic waves, including possible nonlinear effects.

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Section: Sample Preparationmentioning

confidence: 99%

Hard x-ray nanotomography of dental composites for wide color matching

Tripkis,

Humbel,

Deyhle

et al. 2024

Bioinspiration, Biomimetics, and Bioreplication XIV

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Effect of Brushing with Whitening Toothpaste on Color Stability and Surface Roughness of Color-Adjustment Resin-Based Composites

GÜVEN BEKDAŞ,

HUBBEZOĞLU

2023

Cumhuriyet Dental Journal

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Objectives: Aim of this study is to compare the color stability and surface roughness of four different color-adjustment composites produced using smart chromatic technology and a highly esthetic nano-hybrid composite after brushing with whitening toothpaste. Materials and Methods: 4 different color adjustment composites and 1 nano hybrid composite are divided into 5 main groups according to their contents. A total of 120 disc-shaped specimens (8 x 2 mm) were prepared, 24 in each group. The prepared samples were sequentially kept in solutions (tea, coffee and cherry juice) for 12 days and randomly divided into 3 subgroups (n=8). Subgroup 1, brushing with distilled water; Subgroup 2, brushing with whitening toothpaste; Subgroup 3, home bleaching agent were applied (14 days). Color measurements were made with a spectrophotometer, ΔE values were calculated using the CIELAB formula. Surface roughness values were made using a profilometer device. Samples from each group were selected for SEM surface analysis. Results: Among the composite groups, the highest coloration was observed in the Omnichroma, while the lowest ΔE values were observed in the Vittra composite group. Although the ΔE values on the 14th day were higher than the 7th day in all groups, the differences between them were statistically insignificant(p>0.05) In all composite groups (except Omnichroma), the ΔE values of brushing with whitening toothpaste at the end of the 14th day were higher than brushing with distilled water(p

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Color Change Evaluation of Three Universal Resin Composites after Storage in Water: An In Vitro Study

Cited by 2 publications

References 38 publications

Hard x-ray nanotomography of dental composites for wide color matching

Hard x-ray nanotomography of dental composites for wide color matching

Effect of Brushing with Whitening Toothpaste on Color Stability and Surface Roughness of Color-Adjustment Resin-Based Composites

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