{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T16:43:14Z","timestamp":1788972194277,"version":"build-2803163510"},"reference-count":23,"publisher":"Oxford University Press (OUP)","issue":"8","license":[{"start":{"date-parts":[[2024,8,12]],"date-time":"2024-08-12T00:00:00Z","timestamp":1723420800000},"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":["#2020\/07950-8"],"award-info":[{"award-number":["#2020\/07950-8"]}],"id":[{"id":"10.13039\/501100001807","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002322","name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior\u2014Brasil","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100002322","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2024,11,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>This study evaluated the impact of variations in anteroposterior and lateral tilts of patients head on radiation-weighted doses to organs\/tissues and effective doses using 3 different cone beam computed tomography (CBCT) machines.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>An anthropomorphic phantom was used to estimate radiation doses in 3 CBCT machines (OP300, Eagle X 3D, and Eagle Edge). Thermoluminescent dosimeters were placed in regions corresponding to pre-stablished organ\/tissues. CBCT examinations from the posterior mandible and anterior maxilla regions were acquired, with 3 different anteroposterior angulations (0\u00b0, 30\u00b0, and 45\u00b0), and from the posterior mandible in 3 different lateral angulations (0\u00b0, 20\u00b0 to the left, and 20\u00b0 to the right side). Radiation-weighted doses for each organ\/tissue and effective doses were calculated for each machine and angulation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>For the posterior mandible acquisitions, anteroposterior angulations of the head at 30\u00b0 and 45\u00b0 yielded a reduction in effective doses in all 3 devices. A 20\u00b0 tilt to the right side resulted in lower doses than to the left [same side as the field of view (FOV)]. For the anterior maxilla, increased anteroposterior angulation was associated with reduction in effective dose in 2 devices.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Effective doses are lower when small FOV CBCT exams of the posterior mandible and anterior maxilla are acquired with increased anteroposterior head angulation at 30\u00b0 and 45\u00b0. For FOV in the posterior mandible, a 20\u00b0 lateral tilt towards the side opposite to the FOV also yields lower effective doses. The main contribution to these dose reductions is the decrease in dose to salivary glands.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/dmfr\/twae043","type":"journal-article","created":{"date-parts":[[2024,8,12]],"date-time":"2024-08-12T11:42:08Z","timestamp":1723462928000},"page":"566-572","source":"Crossref","is-referenced-by-count":5,"title":["Variations in head tilt during the acquisition of cone beam computed tomography scans and their effects on effective radiation dose"],"prefix":"10.1093","volume":"53","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5443-8225","authenticated-orcid":false,"given":"Arthur X M","family":"Mancini","sequence":"first","affiliation":[{"name":"Department of Dental Materials and Prosthodontics, School of Dentistry of Ribeirao Preto, University of Sao Paulo , Ribeirao Preto, Sao Paulo, 14040-904,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gabriela A","family":"Carmozini","sequence":"additional","affiliation":[{"name":"Department of Stomatology, Public Oral Health and Forensic Dentistry, School of Dentistry of Ribeirao Preto, University of Sao Paulo , Ribeirao Preto, Sao Paulo, 14040-904,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thiago M","family":"In\u00e1cio","sequence":"additional","affiliation":[{"name":"Department of Stomatology, Public Oral Health and Forensic Dentistry, School of Dentistry of Ribeirao Preto, University of Sao Paulo , Ribeirao Preto, Sao Paulo, 14040-904,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marcela T","family":"R\u00e9a","sequence":"additional","affiliation":[{"name":"Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas , Piracicaba, Sao Paulo, 13414-903,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cassiana","family":"Viccari","sequence":"additional","affiliation":[{"name":"Center for Instrumentation, Dosimetry and Radioprotection (CIDRA), University of Sao Paulo , Ribeirao Preto, Sao Paulo, 14040-904,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Danieli M","family":"Brasil","sequence":"additional","affiliation":[{"name":"Department of Diagnosis & Oral Health, University of Louisville School of Dentistry , Louisville, Kentucky, 40208 ,","place":["United States of America"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9936-7547","authenticated-orcid":false,"given":"Christiano","family":"Oliveira-Santos","sequence":"additional","affiliation":[{"name":"Department of Diagnosis & Oral Health, University of Louisville School of Dentistry , Louisville, Kentucky, 40208 ,","place":["United States of 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