{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T05:11:20Z","timestamp":1789017080555,"version":"build-2803163510"},"reference-count":29,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T00:00:00Z","timestamp":1788998400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Oncol."],"abstract":"<jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>Dental prostheses are often removed before radiotherapy due to metal-induced artifacts, impairing patients\u2019 quality of life. This study evaluated five non-metallic materials for fixed prostheses in head and neck radiotherapy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      Full crowns made of zirconia, lithium disilicate glass-ceramic, resin-matrix ceramic, PEEK, and PMMA were placed on an\n                      <jats:italic>in vitro<\/jats:italic>\n                      model with natural teeth as a control. Spectral CT scanning with and without artifact reduction was performed. Dose distributions for 6 MV and 10 MV photon beams were calculated using convolution superposition.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Artifact reduction significantly altered dose distributions for all materials (P &amp;lt; 0.001). Without artifact reduction, only zirconia differed from natural teeth (P &amp;lt; 0.001). After artifact reduction, no material showed significant difference from the control. Artifact-induced dose error was largest for zirconia, followed by resin-matrix ceramic and glass-ceramic, while errors for PEEK and PMMA were negligible.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Zirconia is unsuitable due to severe artifacts. PEEK and PMMA are recommended for provisional crowns. Lithium disilicate glass-ceramic and resin-matrix ceramic are suitable for definitive restorations in radiotherapy patients.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fonc.2026.1910767","type":"journal-article","created":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T04:33:00Z","timestamp":1789014780000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Study on the influence of fixed dental prostheses on radiotherapy dose distribution based on dual-layer detector spectral CT imaging"],"prefix":"10.3389","volume":"16","author":[{"given":"Haoxin","family":"Pan","sequence":"first","affiliation":[{"name":"Department of Stomatology, The First Affiliated Hospital, Fujian Medical University","place":["Fuzhou, China"]},{"name":"Department of Stomatology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University","place":["Fuzhou, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lin","family":"Lu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Radiation Biology of Fujian Higher Education Institutions, The First Affiliated Hospital, Fujian Medical University","place":["Fuzhou, China"]},{"name":"Department of Radiotherapy, Cancer Center, The First Affiliated Hospital of Fujian Medical University","place":["Fuzhou, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yudian","family":"Mao","sequence":"additional","affiliation":[{"name":"Stomatological Key laboratory of Fujian College and University & Institute of Stomatology & Research Center of Dental and Craniofacial Implants, School and Hospital of Stomatology, Fujian Medical University","place":["Fuzhou, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianzhao","family":"Ni","sequence":"additional","affiliation":[{"name":"Department of Stomatology, The First Affiliated Hospital, Fujian Medical University","place":["Fuzhou, China"]},{"name":"Department of Stomatology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University","place":["Fuzhou, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yujie","family":"Cao","sequence":"additional","affiliation":[{"name":"Department of Stomatology, The First Affiliated Hospital, Fujian Medical University","place":["Fuzhou, China"]},{"name":"Department of Stomatology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University","place":["Fuzhou, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,9,10]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","DOI":"10.1088\/0031-9155\/48\/20\/003","article-title":"Dose perturbation in the presence of metallic implants: treatment planning system versus Monte Carlo 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