Related Experiment Video
Updated: Mar 25, 2026
03:37
Evaluating the Effects of Different Polishing Methods on Color Stability of Dental Restorations in Pediatric Dentistry
Published on: June 6, 2025
583
Color stability of recent composite resins
S Ardu1, O Duc2, E Di Bella3
1Treatment Plan Unit and Division of Cariology and Endodontology, Clinique Universitaire de Médecine Dentaire (CUMD), University of Geneva, Rue Barthélemy-Menn 19, 1205, Geneva, Switzerland. stefano.ardu@unige.ch.
Odontology
|February 20, 2016
Summary
The color stability of eight resin composites varied significantly when exposed to common staining agents like coffee and wine. Venus Diamond showed the best color stability, while Miris 2 and ELS performed poorly.
Area of Science:
- Dental Materials Science
- Polymer Chemistry
Background:
- Color stability is crucial for the aesthetic longevity of resin composites in restorative dentistry.
- Newer resin composite formulations require rigorous evaluation against common dietary staining agents.
Purpose of the Study:
- To assess the color stability of eight novel resin composite materials.
- To compare the susceptibility of these materials to various common staining solutions.
Main Methods:
- Six specimens from each of the eight resin composites were immersed in artificial saliva, coffee, cola, tea, orange juice, and red wine for four weeks at 37°C.
- Color change (ΔE00) was measured using a spectrophotometer against black and white backgrounds before and after staining.
- Statistical analysis included ANOVA and Fisher's LSD post hoc test to determine significant differences.
Main Results:
- Significant differences in color change (ΔE00) were observed among the tested resin composites (p < 0.01).
- Color stability varied greatly depending on the background and the specific staining agent.
- Venus Diamond exhibited the lowest mean ΔE00 (1.5 over white, 0.8 over black), indicating superior color stability.
- Miris 2 (52.4 over white) and ELS (40.0 over black) showed the highest mean ΔE00 values, respectively.
Conclusions:
- Resin composite materials demonstrate significantly different color stability when subjected to various staining challenges.
- Material selection is critical for achieving predictable long-term aesthetics in dental restorations.
- Further research into stain-resistant resin composite formulations is warranted.
Related Concept Videos
02:39Indicators
63.4K
Certain organic substances change color in dilute solution when the hydronium ion concentration reaches a particular value. For example, phenolphthalein is a colorless substance in any aqueous solution with a hydronium ion concentration greater than 5.0 × 10−9 M (pH < 8.3). In more basic solutions where the hydronium ion concentration is less than 5.0 × 10−9 M (pH > 8.3), it is red or pink. Substances such as phenolphthalein, which can be used to determine the pH of a solution, are...
63.4K
01:26Differential Staining Technique
2.9K
Differential staining is an essential microbiological technique that exploits variations in cell wall structures to classify and identify microorganisms. It facilitates the distinction of bacteria, aiding in diagnostic and research applications. Two of the most widely used differential staining methods are Gram staining and acid-fast staining, both of which rely on the chemical and structural differences in bacterial cell walls.Gram Staining TechniqueGram staining differentiates bacteria by...
2.9K
03:02Colors and Magnetism
14.6K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
14.6K
01:13Special Staining Techniques
1.6K
Specialized staining techniques play a vital role in microbiology by enabling the visualization of specific bacterial structures that remain undetectable with standard microscopy methods. These techniques not only enhance the structural visualization of bacterial cells but also provide critical insights into their pathogenicity and classification. Additionally, they support diagnostic and research endeavors in microbiology by identifying key bacterial features.Capsule Staining for Virulence...
1.6K
01:03Fixation and Sectioning
8.8K
Two basic types of preparation are used to visualize specimens with a light microscope: wet mounts and fixed specimens.
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
8.8K
01:24Simple Staining Technique
5.1K
OverviewStaining techniques in microscopy enhance the visualization of microorganisms by increasing contrast and allowing the differentiation of cellular structures. Simple staining is one of the fundamental methods used to observe the basic morphological characteristics of microorganisms, including their size, shape, and arrangement. This method relies on the application of a single dye to stain the entire cell, producing a clear contrast between the cell and the background.FixationFixation is...
5.1K