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A total of 20 right and 20 left temporal dry bones without physical deformation were scanned with a MicroCT device. All measurements were made using MicroCT programs from sections in the axial plane. For the FS, the average depth was measured as 3.485\u2009mm without any classification, and 29 of the 40 bones had Type C radiological morphology. The mean depth for all sinus tympanicus was 2.646\u2009mm, and 22 of the 40 bones had Type B morphology. For the STS, 29 out of 40 samples had no contact with the FN; regardless of the classification, the average depth was measured as 2.376\u2009mm. We reveal the depths of the tympanic cavities and their relationship with the FN. The results of this study may benefit clinicians performing retrotympanum surgeries.<\/jats:p>","DOI":"10.1002\/ca.23968","type":"journal-article","created":{"date-parts":[[2022,10,21]],"date-time":"2022-10-21T08:50:16Z","timestamp":1666342216000},"page":"414-419","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Examination of sinus tympani, subtympanic sinus, and facial sinus with <scp>MicroCT<\/scp>"],"prefix":"10.1002","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5039-4664","authenticated-orcid":false,"given":"Ferhat","family":"Geneci","sequence":"first","affiliation":[{"name":"Faculty of Medicine, Department of Anatomy Ankara Y\u0131ld\u0131r\u0131m Beyaz\u0131t University  Ankara Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mert","family":"Ocak","sequence":"additional","affiliation":[{"name":"Faculty of Dentistry, Department of Anatomy Ankara University  Ankara Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,11]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/lary.27135"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1177\/0194599818787180"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.4274\/jarem.galenos.2020.2948"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.anl.2020.01.009"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00405-017-4492-0"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1097\/MAO.0000000000002787"},{"key":"e_1_2_7_8_1","first-page":"61","article-title":"The recesses of the retro\u2010tympanum","volume":"51","author":"Cheita A. 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