{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T00:02:19Z","timestamp":1783036939679,"version":"3.54.6"},"reference-count":62,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2020,9,7]],"date-time":"2020-09-07T00:00:00Z","timestamp":1599436800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["American J Hum Biol"],"published-print":{"date-parts":[[2021,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Third molars (M3s) are the most common congenitally missing teeth. The aim of this study was to compare the frequency of M3 agenesis in two different age groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This study examined the panoramic radiographic images of 1036 patients. Two groups, each consisting of 518 patients, were arranged based on age ranges. The patients aged 12 to 19\u2009years were in the first group and those 20\u2009years and older were in the second group. The frequency of M3 agenesis was examined in both age groups. The distribution of M3 agenesis by sex and jaw was also recorded, along with the number of M3s affected by agenesis. Chi\u2010square tests were used to examine the relationships between categorical variables.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>M3 agenesis was observed in 29.3% and 20.5% in the first and second groups, respectively; the difference was statistically significant (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.01). It was more common in female (27.3%) than in male patients (21.4%), and in the maxilla (11.2%) than in the mandible (5.8%), and the differences were statistically significant (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.05). It was mostly observed forthemaxilla right M3 (18) (30.9%) and in the single quadrant of the jaws (9.7%).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The frequency of M3 agenesis was more common in patients aged 12 to 19\u2009years than in those aged 20\u2009years and older. Additionally, M3 agenesis was more common in females and in the maxilla.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ajhb.23487","type":"journal-article","created":{"date-parts":[[2020,9,10]],"date-time":"2020-09-10T07:28:05Z","timestamp":1599722885000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Evaluation of the frequency of third molar agenesis according to different age groups"],"prefix":"10.1002","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8356-8344","authenticated-orcid":false,"given":"Umut","family":"Pamukcu","sequence":"first","affiliation":[{"name":"Department of Dentomaxillofacial Radiology, Faculty of Dentistry Gazi University  Ankara Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nebiha Gozde","family":"Ispir","sequence":"additional","affiliation":[{"name":"Department of Dentomaxillofacial Radiology, Faculty of Dentistry Gazi University  Ankara Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meryem","family":"Toraman Alkurt","sequence":"additional","affiliation":[{"name":"Department of Dentomaxillofacial Radiology, Faculty of Dentistry Gazi University  Ankara Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bulent","family":"Altunkaynak","sequence":"additional","affiliation":[{"name":"Department of Statistics, Faculty of Sciences Gazi University  Ankara Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ilkay","family":"Peker","sequence":"additional","affiliation":[{"name":"Department of Dentomaxillofacial Radiology, Faculty of Dentistry Gazi University  Ankara Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,9,7]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0101157"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajpa.1330430113"},{"issue":"1","key":"e_1_2_10_4_1","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1016\/S0011-8532(22)00661-9","article-title":"Dental variation among populations. 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