{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T13:45:59Z","timestamp":1789739159010,"version":"4.0.1"},"reference-count":60,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2026,2,3]],"date-time":"2026-02-03T00:00:00Z","timestamp":1770076800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Recep Tayyip Erdo\u011fan University Development Foundation","award":["02025007021621"],"award-info":[{"award-number":["02025007021621"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>This study aims to examine the effect of additional light curing on the color stability and degree of conversion (DoC) of mono-shade resin composites cured using different light curing units and irradiation levels. Sixty-six disk-shaped samples were prepared for each of the mono-shade (Omnichroma\/OC, Vittra APS Unique\/VU) and multi-shade resin (Clearfil Majesty ES-2\/CME) composites. The samples were randomly divided into three groups and cured for 20 s according to: (1) QTH at 800 mW\/cm2 (16 J\/cm2), (2) LED at 1000 mW\/cm2 (20 J\/cm2), and (3) 1400 mW\/cm2 (28 J\/cm2). After polishing, half of the samples in each group were exposed to additional light curing. Color parameters were measured at baseline and after 28 days of immersion in a coffee solution. CIEDE2000 color (\u2206E00) and Whiteness Index (\u0394WID) changes were used to assess color stability. \u2206E00 and \u0394WID were compared with the perceptibility and acceptability threshold. Mono-shade composites exhibited lower DoC with higher \u0394E00 and \u0394WID changes compared to the multi-shade composite. Mono-shade composites showed clinically unacceptable color and whiteness changes. Additional light curing performed using the same protocol both before and after polishing did not contribute to the color\/whiteness stability and DoC of either mono-shade or multi-shade resin composites.<\/jats:p>","DOI":"10.3390\/polym18030403","type":"journal-article","created":{"date-parts":[[2026,2,3]],"date-time":"2026-02-03T12:46:11Z","timestamp":1770122771000},"page":"403","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Effect of Additional Light Curing on Color Stability and Degree of Conversion of Mono-Shade Resin Composites"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4909-4701","authenticated-orcid":false,"given":"Fatih","family":"Bedir","sequence":"first","affiliation":[{"name":"Department of Restorative Dentistry, Faculty of Dentistry, Recep Tayyip Erdogan University, Rize 53020, T\u00fcrkiye"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3357-6896","authenticated-orcid":false,"given":"Muhammet","family":"Karada\u015f","sequence":"additional","affiliation":[{"name":"Department of Restorative Dentistry, Faculty of Dentistry, Recep Tayyip Erdogan University, Rize 53020, T\u00fcrkiye"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9666-9248","authenticated-orcid":false,"given":"Makbule Gamze","family":"At\u0131c\u0131 Bedir","sequence":"additional","affiliation":[{"name":"Rize Oral and Dental Health Center, Rize 53020, T\u00fcrkiye"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alper","family":"\u00d6zdo\u011fan","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics, Faculty of Dentistry, Atat\u00fcrk University, Erzurum 25240, T\u00fcrkiye"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,2,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"108852","DOI":"10.1016\/j.compositesb.2021.108852","article-title":"A review of dental composites: Challenges, chemistry aspects, filler influences, and future insights","volume":"216","author":"Aminoroaya","year":"2021","journal-title":"Compos. 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