{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T07:36:04Z","timestamp":1764920164909,"version":"3.46.0"},"reference-count":18,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2025,8,12]],"date-time":"2025-08-12T00:00:00Z","timestamp":1754956800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["J Orthod"],"published-print":{"date-parts":[[2025,12]]},"abstract":"<jats:sec>\n                    <jats:title>Objective:<\/jats:title>\n                    <jats:p>To develop a protocol for locating the Xi point using three-dimensional (3D) cone-beam computed tomography (CBCT) and to evaluate the linear distance between the Xi point and the mandibular foramen on the CBCT image.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study design:<\/jats:title>\n                    <jats:p>A retrospective cross-sectional study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study setting:<\/jats:title>\n                    <jats:p>The study was conducted on standardised CBCT records of 35 patients aged &gt;18 years (13 men, 22 women). The CBCT scans were analysed using Dolphin 3D 11.9 software.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>The Xi point was constructed on the right and left lateral views of the ramus using the four points R1, R2, R3 and R4 based on Ricketts\u2019 analysis. The mandibular foramina were located on CBCT and the linear distance from the mandibular foramen to the Xi points were recorded.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>The 3D Xi point was located on the lateral surface of the mandibular ramus superior and distal to mandibular foramen. The mean distance of the Xi point from the mandibular foramen was 2.3 \u00b1 1.46 mm on right side and 2.3 \u00b1 1.53 mm on left side.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>The study identified the accuracy of Xi point construction and its linear relation to the mandibular foramen. Xi point validation in relation to the mandibular foramen serves as a guide for inferior alveolar nerve course identification. The results of the study also find applications in bone screw placement and growth prediction.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/14653125251358822","type":"journal-article","created":{"date-parts":[[2025,8,13]],"date-time":"2025-08-13T02:42:28Z","timestamp":1755052948000},"page":"348-354","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["A technique to locate Ricketts\u2019 Xi point in 3D CBCT images: A cross-sectional study"],"prefix":"10.1177","volume":"52","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-9663-6965","authenticated-orcid":false,"given":"Nithin Vaishag","family":"Rajesh","sequence":"first","affiliation":[{"name":"Department of Orthodontics and Dentofacial Orthopedics, Amrita School of Dentistry, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7591-9287","authenticated-orcid":false,"given":"Rahul Damodaran","family":"Prabha","sequence":"additional","affiliation":[{"name":"Department of Orthodontics and Dentofacial Orthopedics, Amrita School of Dentistry, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9644-1123","authenticated-orcid":false,"given":"Sapna Varma","family":"Nilambur Kovilakam","sequence":"additional","affiliation":[{"name":"Department of Orthodontics and Dentofacial Orthopedics, Amrita School of Dentistry, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6192-3210","authenticated-orcid":false,"given":"Ajith","family":"Vallikat Velath","sequence":"additional","affiliation":[{"name":"Department of Orthodontics and Dentofacial Orthopedics, Amrita School of Dentistry, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2025,8,12]]},"reference":[{"doi-asserted-by":"publisher","key":"e_1_3_2_2_1","DOI":"10.5624\/isd.2020.50.2.125"},{"doi-asserted-by":"publisher","key":"e_1_3_2_3_1","DOI":"10.4041\/kjod.2014.44.2.77"},{"doi-asserted-by":"publisher","key":"e_1_3_2_4_1","DOI":"10.1016\/j.ajodo.2006.03.002"},{"doi-asserted-by":"publisher","key":"e_1_3_2_5_1","DOI":"10.1016\/j.ajodo.2017.08.014"},{"doi-asserted-by":"publisher","key":"e_1_3_2_6_1","DOI":"10.1016\/0030-4220(77)90027-5"},{"doi-asserted-by":"publisher","key":"e_1_3_2_7_1","DOI":"10.1016\/j.jpfa.2015.06.001"},{"doi-asserted-by":"publisher","key":"e_1_3_2_8_1","DOI":"10.4041\/kjod.2015.45.6.282"},{"doi-asserted-by":"publisher","key":"e_1_3_2_9_1","DOI":"10.25259\/APOS_20_2019"},{"doi-asserted-by":"publisher","key":"e_1_3_2_10_1","DOI":"10.1016\/j.ajodo.2006.04.027"},{"doi-asserted-by":"publisher","key":"e_1_3_2_11_1","DOI":"10.1016\/j.jormas.2020.06.006"},{"doi-asserted-by":"publisher","key":"e_1_3_2_12_1","DOI":"10.1016\/0002-9416(81)90100-7"},{"doi-asserted-by":"publisher","key":"e_1_3_2_13_1","DOI":"10.2319\/082018-612.1"},{"doi-asserted-by":"publisher","key":"e_1_3_2_14_1","DOI":"10.1177\/0301574221991947"},{"key":"e_1_3_2_15_1","volume-title":"Essential Clinically Applied Anatomy of the Peripheral Nervous System in the Head and Neck","author":"Rea P","year":"2016","unstructured":"Rea P (2016) Essential Clinically Applied Anatomy of the Peripheral Nervous System in the Head and Neck. Amsterdam: Academic Press."},{"key":"e_1_3_2_16_1","first-page":"368","article-title":"A principle of arcial growth of the mandible","volume":"42","author":"Ricketts RM","year":"1972","unstructured":"Ricketts RM (1972) A principle of arcial growth of the mandible. The Angle Orthodontist 42: 368\u2013386.","journal-title":"The Angle Orthodontist"},{"doi-asserted-by":"publisher","key":"e_1_3_2_17_1","DOI":"10.1016\/0002-9416(82)90073-2"},{"doi-asserted-by":"publisher","key":"e_1_3_2_18_1","DOI":"10.1016\/S1073-8746(98)80025-X"},{"doi-asserted-by":"publisher","key":"e_1_3_2_19_1","DOI":"10.4103\/0976-9668.101896"}],"container-title":["Journal of Orthodontics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/14653125251358822","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/14653125251358822","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/14653125251358822","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T07:04:39Z","timestamp":1764918279000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/14653125251358822"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,8,12]]},"references-count":18,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2025,12]]}},"alternative-id":["10.1177\/14653125251358822"],"URL":"https:\/\/doi.org\/10.1177\/14653125251358822","relation":{},"ISSN":["1465-3125","1465-3133"],"issn-type":[{"type":"print","value":"1465-3125"},{"type":"electronic","value":"1465-3133"}],"subject":[],"published":{"date-parts":[[2025,8,12]]}}}