Effect of Different Mouthwashes on the Surface Microhardness and Color Stability of Dental Nanohybrid Resin Composite.

Autor: Hamdy TM; Restorative and Dental Materials Department, Oral and Dental Research Institute, National Research Centre (NRC), Giza 12622, Egypt., Abdelnabi A; Restorative and Dental Materials Department, Oral and Dental Research Institute, National Research Centre (NRC), Giza 12622, Egypt., Othman MS; Operative Dentistry Department, Faculty of Dentistry, Cairo University, Cairo 11553, Egypt., Bayoumi RE; Biomaterials Department, Faculty of Dentistry (Girls), Azhar University, Cairo 11754, Egypt., Abdelraouf RM; Biomaterials Department, Faculty of Dentistry, Cairo University, Cairo 11553, Egypt.
Jazyk: angličtina
Zdroj: Polymers [Polymers (Basel)] 2023 Feb 06; Vol. 15 (4). Date of Electronic Publication: 2023 Feb 06.
DOI: 10.3390/polym15040815
Abstrakt: Background: Surface microhardness and color stability of dental restorative material should be sustained throughout its functional lifetime to maintain the esthetic quality of the restoration. However, the frequent application of mouthwash may affect their surface microhardness and color stability. The aim of this study was to evaluate the effects of different types of mouthwashes with different contents on surface microhardness and color stability of dental nanohybrid resin-based composite.
Methods: Disc specimens of nanohybrid resin composite (Luna Nano-Hybrid Composite) were prepared according to manufacturing instructions; specimens were incubated for 24 h in three types of mouthwash (Chlorohexidine, Listerine Green Tea, and Colgate Optic White Whitening Mouthwash). Artificial saliva was used as a control group. Surface microhardness was evaluated using Vickers microhardness device. Color stability after and before immersion in the different mouthwashes was evaluated using extra-oral spectrophotometer; the values of color change (ΔE 00 ) were subsequently calculated. Data were analyzed using one-way ANOVA and post hoc test ( p ≤ 0.05).
Results: There was no significant difference between microhardness of resin composite immersed in artificial saliva, CHX, and Green Tea mouthwashes (78.5, 78.4, and 73.5, respectively) ( p ≥ 0.1), while the bleaching mouthwash led to the lowest microhardness of resin composite, with significant difference compared to the three previous immersion media ( p = 0.002). Moreover, there were significant differences in the color changes (ΔE 00 ) of resin composite exposed to the various immersion media ( p = 0.0001).
Conclusions: The bleaching mouthwash led to a significant reduction in nanohybrid resin composite's microhardness compared to the chlorohexidine and Green Tea containing mouthwashes. The resin composite's color change was accepted in bleaching mouthwash but unaccepted in chlorohexidine and Green Tea containing mouthwashes.
Databáze: MEDLINE
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