{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T07:09:45Z","timestamp":1788764985562,"version":"build-2803163510"},"reference-count":32,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2026,9,6]],"date-time":"2026-09-06T00:00:00Z","timestamp":1788652800000},"content-version":"vor","delay-in-days":248,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["BioMed Research International"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>This study is aimed at comparing the effects of different whitening toothpastes on the color of aged ZLS ceramics after immersion in an acidic beverage.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods<\/jats:title>\n                    <jats:p>\n                      In this in vitro study, 72 cylindrical (2\u00d710\u2009mm) ZLS ceramic specimens were sintered, polished, and randomly assigned to six groups (\n                      <jats:italic>n<\/jats:italic>\n                      = 12) of distilled water (D), distilled water\u2009+\u2009Colgate Total Whitening (DT), distilled water\u2009+\u2009Perfect White black (DP), cola (C), cola\u2009+\u2009Colgate Total Whitening (CT), and cola\u2009+\u2009Perfect White black (CP). After 5000 thermal cycles, the specimens were immersed in an acidic beverage for 6 days. The specimens in groups CP, CT, DP, and DT were brushed at 40\u2009rpm for 2.33\u2009min. The CIEL\u2009\n                      <jats:sup>\u2217<\/jats:sup>\n                      a\u2009\n                      <jats:sup>\u2217<\/jats:sup>\n                      b\u2009\n                      <jats:sup>\u2217<\/jats:sup>\n                      color parameters were measured spectrophotometrically before and after aging and toothbrushing. Data were analyzed by one\u2010way ANOVA (alpha = 0.05).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The color change (\n                      <jats:italic>\u0394<\/jats:italic>\n                      <jats:italic>E<\/jats:italic>\n                      ) was not clinically detectable in any group (&lt;\u20093.3).\n                      <jats:italic>\u0394<\/jats:italic>\n                      <jats:italic>E<\/jats:italic>\n                      of the CT group was significantly greater than that of the C (mean difference: 0.12,\n                      <jats:italic>p<\/jats:italic>\n                      &lt; 0.05) and the CP (mean difference: 0.13,\n                      <jats:italic>p<\/jats:italic>\n                      &lt; 0.05) groups.\n                      <jats:italic>\u0394<\/jats:italic>\n                      <jats:italic>L<\/jats:italic>\n                      of the C group was significantly greater than that of the CP group (mean difference: 0.21,\n                      <jats:italic>p<\/jats:italic>\n                      &lt; 0.05). The differences in\n                      <jats:italic>\u0394<\/jats:italic>\n                      <jats:italic>a<\/jats:italic>\n                      and\n                      <jats:italic>\u0394<\/jats:italic>\n                      <jats:italic>b<\/jats:italic>\n                      were not significant among the groups (\n                      <jats:italic>p<\/jats:italic>\n                      &gt; 0.05).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The application of Colgate Total Whitening and Perfect White black toothpaste for 6 weeks, along with simulated 6\u2010month cola consumption, did not cause a clinically detectable change in the color of aged ZLS ceramics.<\/jats:p>\n                  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