{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T19:13:13Z","timestamp":1788462793589,"version":"build-2803163510"},"reference-count":33,"publisher":"Oxford University Press (OUP)","issue":"4","license":[{"start":{"date-parts":[[2024,3,11]],"date-time":"2024-03-11T00:00:00Z","timestamp":1710115200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"funder":[{"DOI":"10.13039\/501100001807","name":"S\u00e3o Paulo Research Foundation","doi-asserted-by":"publisher","award":["#18\/22952-7"],"award-info":[{"award-number":["#18\/22952-7"]}],"id":[{"id":"10.13039\/501100001807","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2024,4,29]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>This study evaluated the effect of metal artefact reduction (MAR) level and tube current on the assessment of dental implant positioning relative to the mandibular canal (MC) through cone-beam computed tomography (CBCT).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Titanium dental implants were placed in dried mandibles at 0.5-mm superior to the MC (group 1\/n\u2009=\u20098) and 0.5-mm inside the MC with perforation of the cortex (group 2\/n\u2009=\u200910). CBCT scans were obtained with different levels of MAR (off, medium, and high) and 2 tube currents (4 and 8\u2009mA). Four examiners analysed the images and scored the contact between the implant and the MC using a 5-point scale. Sensitivity, specificity, area under receiver operating characteristic curve (ROC), and frequency of scores were calculated. Data were compared with analysis of variance 2-way and Tukey's test and scores with Chi-square test.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Specificity and area under ROC curve decreased significantly when MAR level was high compared with MAR-medium and MAR-off. The frequency of score 3 (inconclusive) was the highest, and scores 1 and 5 (definitely no contact and definitely contact, respectively) were the lowest with MAR-high, regardless of the tube current. When MAR was off, there were higher frequencies of scores 1 and 5.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The level of MAR influences the assessment of the relationship between the dental implant and the MC. MAR-high led to lower diagnostic accuracy compared with MAR-medium and off.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Advances in knowledge<\/jats:title>\n                    <jats:p>This article shows that high level of MAR can interfere in the diagnostic of dental implant positioning relative to the MC, decreasing its accuracy.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/dmfr\/twae008","type":"journal-article","created":{"date-parts":[[2024,3,11]],"date-time":"2024-03-11T16:01:35Z","timestamp":1710172895000},"page":"233-239","source":"Crossref","is-referenced-by-count":8,"title":["Effect of metal artefact reduction level on the assessment of dental implant positioning by cone-beam computed tomography"],"prefix":"10.1093","volume":"53","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8573-270X","authenticated-orcid":false,"given":"Camila Porto","family":"Capel","sequence":"first","affiliation":[{"name":"Department of Dental Materials and Prosthodontics, Ribeir\u00e3o Preto School of Dentistry, University of S\u00e3o Paulo, 14040-904 , S\u00e3o Paulo,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9149-1831","authenticated-orcid":false,"given":"Raphael Jurca Gon\u00e7alves","family":"da Motta","sequence":"additional","affiliation":[{"name":"Department of Dental Materials and Prosthodontics, Ribeir\u00e3o Preto School of Dentistry, University of S\u00e3o Paulo, 14040-904 , S\u00e3o Paulo,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9462-7546","authenticated-orcid":false,"given":"Ruben","family":"Pauwels","sequence":"additional","affiliation":[{"name":"Department of Dentistry and Oral Health, Aarhus University , 8000 Aarhus,","place":["Denmark"]},{"name":"Department of Radiology, 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