Objectives: To examine the effects of different whitening agents on the color and translucency of different resin composites,
Material And Methods: A total of 315 specimens (10.0 ×2.0 mm) were fabricated from two microhybrid (G-aenial anterior [G-Ant]) and (G-aenial posterior [G-Post]) and a nano hybrid (G-aenial A'CHORD [ G-ACH]) resin composites and each group was randomly distributed into seven experimental groups (n=15) as follows; 1- control (C); 2- in-office whitening agent (IOW); 3- at-home whitening agent (AHW); 4- prefilled tray (PT); 5- whitening pen (WP); 6- whitening toothpaste (WT) and 7- whitening mouthwash (WMW). The specimens were subjected to staining except control group before application of the different whitening procedures. The color of specimens was measured after 24 h (T), after staining (T) and after whitening (T). Color change [CIEDE2000 (ΔE)], translucency parameter (TP) values and changes in whiteness index (WI) were calculated. Data were analyzed statistically (p<0.05).
Results: No significant 𝑊I differences were detected among the tested resin composites at T and T (p>0.05), whereas a significant difference was observed at T (p<0.005). AHW and IOW produced higher color change than PT, WP, WT and WMR. Significant TP changes were found after the application of IOW and AHW in G-Ant.
Conclusion: The effect of whitening products on the whitening index, color and translucency of resin composites are material and substrate dependent.
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http://dx.doi.org/10.15644/asc57/4/3 | DOI Listing |
J Dent Child (Chic)
September 2024
School of Dentistry, Ceuma University, Imperatriz, Maranhão, Brazil.
The quest for an esthetically pleasing smile is a key driver in seeking dental interventions aimed at achieving a more balanced and harmonious appearance. The purpose of this report is to discuss the restoration of conical lateral incisors in an 11-year-old patient. The treatment approach employed direct composite resin restorations associated with the Digital Smile Design (DSD) technology.
View Article and Find Full Text PDFZhonghua Kou Qiang Yi Xue Za Zhi
January 2025
The post-and-core is a widely accepted method to restore endodontically treated teeth with compromised tooth structure. Currently, cast metal post-and-core systems and prefabricated fiber posts combined with composite resin cores are the most frequently options in dental clinical practice, but both also come with advantages and limitations. The development of computer-aided design/computer-aided manufacturing (CAD/CAM) custom fiber post-and-core represents one of the significant trends in the advancement of dentistry.
View Article and Find Full Text PDFJADA Found Sci
April 2024
Division of Biomaterial and Biomedical Sciences, Oregon Health & Science University, Portland, OR.
3D Print Addit Manuf
October 2024
Department of Mechanical Engineering, University of Massachusetts Lowell, Lowell, Massachusetts, USA.
Digital light processing (DLP) is rapidly growing in popularity as an additive manufacturing method for the fabrication of composite structures, and is an effective way to prepare high-resolution filled parts, such as ceramic green parts or composite magnets. Yet, higher solid loadings of resins and the resulting dramatic increases in viscosity limit DLP printing for applications that depend upon maximization of filler content. In this work, we investigate the capacity of a bimodal particle size distribution to enable the printing of a photosensitive resin containing up to 70 vol% of fillers.
View Article and Find Full Text PDFPLoS One
December 2024
Department of Restorative and Reconstructive Oral Care, Academic Centre for Dentistry Amsterdam (ACTA), Universiteit van Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
Objectives: This in vitro study aimed to investigate the toothbrushing wear on both enamel and dentin surfaces of reference and commercially available dentifrices.
Methods: Bovine enamel and dentin blocks were initially polished and embedded within a resin composite in square shapes (10×8×6 mm3). Employing toothbrushes equipped with nylon bristles, a toothbrushing machine was utilized, subjecting dentin specimens (n = 36) to 500 brush cycles and enamel samples to 5000 brush cycles (n = 36).
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