{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,16]],"date-time":"2026-07-16T10:17:21Z","timestamp":1784197041059,"version":"3.55.0"},"reference-count":31,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2025,6,20]],"date-time":"2025-06-20T00:00:00Z","timestamp":1750377600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Dentistry Journal"],"abstract":"<jats:p>Objective: The aim of this study was to compare the surface roughness of a conventional composite resin, a one-shade universal composite resin, and a group-shade universal composite resin after bleaching. Methods: A conventional composite resin, Clearfill, and the universal composite resins Omnichroma and Optishade were prepared into discs (2 \u00d7 8 mm), with a total of 90 discs. Each group (30) contained three different groups, including a control (n10), coloured with CHX (n10), and after bleaching (n10). The surface roughness of group discs was measured with a 3D profilometer. ANOVA and Kruskal\u2013Wallis Tests were used to analyse data. Analyses were performed in the SPSS programme. Results: Significant Ra values were obtained between subgroups (p &lt; 0.05). Comparisons of surface roughness after discolouring were performed with the control group; the highest surface roughness value (p &gt; 0.05) was found for Optishade after bleaching compared to the control group. The Optishade composite resin showed the highest initial surface roughness value (p &gt; 0.05), and after discolouration followed by bleaching, the Clearfill composite resin showed the highest surface roughness value (p &gt; 0.05). Conclusions: Both immersion and bleaching applications cause surface roughness. As a result, it was determined that the composite resin content has a significant effect on the surface roughness in discolouring and bleaching processes.<\/jats:p>","DOI":"10.3390\/dj13070277","type":"journal-article","created":{"date-parts":[[2025,6,20]],"date-time":"2025-06-20T11:23:24Z","timestamp":1750418604000},"page":"277","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Effect of Bleaching on Surface Roughness of Universal Composite Resins After Chlorhexidine-Induced Staining"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8332-9570","authenticated-orcid":false,"given":"G\u00f6zde","family":"Aksoy Vaizo\u011flu","sequence":"first","affiliation":[{"name":"Department of Restorative Dentistry, Section of Dentistry, Kyrenia University, North Cyprus 99300, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,6,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"902","DOI":"10.1111\/jerd.13329","article-title":"Evolution of the Guided Direct Composite Resin Technique in Restorative Dentistry: A Systematic Review","volume":"37","author":"Tolotti","year":"2024","journal-title":"J. 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