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This makes it challenging to determine the best method to fabricate complete dentures. The objective of this in vitro investigation was to assess and contrast the color stability and dimensional accuracy of denture base resins that were 3D printed and CAD-CAM milled, both before and after aging by thermocycling using digital surface matching technology and a benchtop laser scanner without using a spray, to optimize adaptation of the denture base and cast to minimize any imperfections and to evaluate the impact of the denture cleansing solution on the stability of color.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      Evaluation of the dimensional accuracy (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200927) was completed on a sectional maxillary stone cast using a digital 3D-surface matching software before and after 5000 thermocycles. A spectrophotometer was used to measure the color change (\u25b3E00) of all disc specimens (\n                      <jats:italic>N<\/jats:italic>\n                      \u2009=\u200954) before and after 500 thermocycles and immersion in denture cleansing solution for 30 cycles (3\u00a0min each) daily for 6 days. The Kruskal Wallis test, Dunn\u2019s post hoc test, Tukey\u2019s test with Bonferroni adjustment, one sample t test and independent t test were used to statistically analyze the data (\u03b1\u2009&lt;\u20090.05).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Thermocycling decreased the dimensional accuracy of the heat polymerized group at all 5 locations and the 3D-printed group at locations 1, 3 and 5 (\n                      <jats:italic>P<\/jats:italic>\n                      \u2009&gt;\u2009.05), while it had no significant difference on the CAD-CAM milled group at all locations (\n                      <jats:italic>P<\/jats:italic>\n                      \u2009&lt;\u2009.05). The color change (\u25b3E\n                      <jats:sub>00<\/jats:sub>\n                      ) was lowest in the CAD-CAM milled group, moderate in the heat-polymerized group and highest in the 3D-printed group. After immersion in denture cleanser, the color change (\u25b3E\n                      <jats:sub>00<\/jats:sub>\n                      ) was significantly higher in the 3 groups compared with after thermocycling (\n                      <jats:italic>P<\/jats:italic>\n                      \u2009&gt;\u2009.001).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>CAD-CAM milled resins had the highest dimensional accuracy and the best color stability, conventional heat polymerized acrylic resins showed moderate change in dimensional accuracy and color stability, while the 3D- printed resin had the lowest dimensional accuracy and color stability after aging by thermocycling.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s12903-024-04848-9","type":"journal-article","created":{"date-parts":[[2024,9,26]],"date-time":"2024-09-26T12:01:37Z","timestamp":1727352097000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Effect of aging on dimensional accuracy and color stability of CAD-CAM milled and 3D-printed denture base resins: a comparative in-vitro study"],"prefix":"10.1186","volume":"24","author":[{"given":"Marwa A.","family":"Gad","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ahmed M.","family":"Abdelhamid","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahmoud","family":"ElSamahy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Salma","family":"Abolgheit","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kenda I.","family":"Hanno","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,9,26]]},"reference":[{"key":"4848_CR1","doi-asserted-by":"publisher","first-page":"721","DOI":"10.1016\/j.prosdent.2016.12.006","volume":"117","author":"MT Kattadiyil","year":"2017","unstructured":"Kattadiyil MT, AlHelal A, Goodacre BJ. 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