Arslan E., Avukat E. N., Akay C.
CUREUS, vol.16, no.3, pp.1-8, 2024 (ESCI)
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Publication Type:
Article / Article
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Volume:
16
Issue:
3
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Publication Date:
2024
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Doi Number:
10.7759/cureus.55804
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Journal Name:
CUREUS
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Journal Indexes:
Emerging Sources Citation Index (ESCI)
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Page Numbers:
pp.1-8
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Eskisehir Osmangazi University Affiliated:
Yes
Abstract
Statement of problem: New-generation denture base materials are used successfully in denture fabrication; however, the effect of saliva pH change on the color stability of materials is unknown.
Purpose: The purpose of this in vitro study is to evaluate the color stability of new-generation denture base materials after immersion in artificial saliva with different pH values (3, 7, 14).
Material and methods: Disc-shaped samples (Ø 10 mm x 2 mm) were prepared from three different denture base materials (1 pre-polymerized polymethylmethacrylate [PMMA], 1 graphene-reinforced PMMA, and heat-cure polymethyl methacrylate resin)(n= 10). After polishing, color coordinates were measured using a PCE-CSM 5 colorimeter programmed in the CIE system (L* a* b*). The samples were kept in artificial saliva at different pH values and 37 C for 21 days. At the end of 21 days, color coordinates were measured again. The suitability of the measurements for a normal distribution was examined with the Kolmogro-Smirnov test. Whether color measurements obtained at different pH levels differed according to groups was examined with the Kruskal-Wallis test. The correlation between the CIEDE2000 and CIELab color difference formulas was examined by correlation analysis.
Results: The highest color difference occurred in heat-cure samples at pH 3 (p< 0.001). The color difference at different pH values was least observed in pre-polymerized PMMA samples. Significant color differences occurred in the graphene-reinforced pre-polymerized PMMA group at pH 7 (p< 0.001).