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Color Mapping of Teeth Restored Using Dental Adhesives Loaded with Magnetic Nanoparticles.
Carina-Sonia Neagu1,2, Robert-Angelo Tuce3, Rodica Turcu4
1Department of Prosthetic Technology and Dental Materials, "Victor Babes" University of Medicine and Pharmacy Timisoara, 9 Revolutiei 1989 Ave., 300070 Timisoara, Romania.
A dual coating of silica and calcium hydroxide on magnetic nanoparticles in dental adhesives minimally impacts tooth color. However, uncoated magnetic nanoparticles significantly alter tooth color, necessitating further research for improved consistency.
Area of Science:
- Biomaterials Science
- Dental Materials
- Nanotechnology in Dentistry
Background:
- Conventional dental adhesives with magnetic nanoparticles (MNPs) show potential for preventing microleakages.
- Aesthetic concerns arise from the dark color of MNPs in dental restorations.
- Coatings are being developed to mask the esthetic impact of MNPs in dental adhesives.
Purpose of the Study:
- To quantify regional chromatic differences in teeth restored with dental adhesives containing varying MNP content.
- To evaluate the esthetic impact of coated versus uncoated MNPs in dental adhesives.
Main Methods:
- Cavities were prepared in artificial and extracted teeth, divided into groups receiving commercial adhesive, adhesive with dual-coated MNPs (SiO2/Ca(OH)2), or adhesive with uncoated MNPs.
- Color differences were analyzed using CIELAB color coordinates and CIEDE2000 calculations.
- Statistical analysis included Bland-Altman plots and one-sample t-tests.
Main Results:
- Adhesives with dual-coated MNPs (G1) showed minimal color differences compared to controls (G0), with CIEDE2000 of 1.5.
- Adhesives with uncoated MNPs (G2) exhibited significant color differences from controls (G0), with CIEDE2000 of 17.0.
- A notable percentage (24.4%) of point pairs with coated MNPs exceeded the color difference acceptability limit.
Conclusions:
- The silica and calcium hydroxide coating effectively mitigates the esthetic issues associated with MNP-laden dental adhesives.
- Further research is needed to minimize variability in color differences between specimens.
- Optimizing MNP coatings is crucial for achieving both functional and esthetic dental restorations.
