{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T23:31:34Z","timestamp":1784763094088,"version":"3.55.0"},"reference-count":13,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2023,2,12]],"date-time":"2023-02-12T00:00:00Z","timestamp":1676160000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Dentistry Journal"],"abstract":"<jats:p>The presence of a supernumerary tooth is one of the most common dental anomalies, and surgical treatment is often required to address this anomaly. Moreover, it may lead to malocclusion, and long-term follow-up is important to monitor its status. A 4-year-and-11-month-old boy was referred to our hospital for dental caries treatment. At 5 years and 5 months of age, a radiographic examination showed a supernumerary tooth (first supernumerary tooth) near the permanent maxillary left central incisor, and it was extracted 6 months later. Eighteen months after the extraction of the first supernumerary tooth, a new supernumerary tooth (second supernumerary tooth) was detected in the same region, which was extracted when the patient was aged seven years and seven months. Seven months later, another supernumerary tooth (third supernumerary tooth) was detected and extracted immediately. However, the permanent maxillary left central incisor did not erupt spontaneously even after 6 months. Therefore, surgical exposure was performed, and the central incisor erupted into the oral cavity. This report describes our experience with this patient with three metachronous supernumerary teeth and their management until the eruption of the permanent tooth. This report highlights the importance of long-term follow-up after supernumerary tooth extraction until the permanent teeth in that region have erupted completely.<\/jats:p>","DOI":"10.3390\/dj11020049","type":"journal-article","created":{"date-parts":[[2023,2,13]],"date-time":"2023-02-13T04:07:19Z","timestamp":1676261239000},"page":"49","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["A Third Supernumerary Tooth Occurring in the Same Region: A Case Report"],"prefix":"10.3390","volume":"11","author":[{"given":"Tatsuya","family":"Akitomo","sequence":"first","affiliation":[{"name":"Department of Pediatric Dentistry, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuria","family":"Asao","sequence":"additional","affiliation":[{"name":"Department of Pediatric Dentistry, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9387-7746","authenticated-orcid":false,"given":"Yuko","family":"Iwamoto","sequence":"additional","affiliation":[{"name":"Department of Pediatric Dentistry, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Satoru","family":"Kusaka","sequence":"additional","affiliation":[{"name":"Department of Pediatric Dentistry, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Momoko","family":"Usuda","sequence":"additional","affiliation":[{"name":"Department of Pediatric Dentistry, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariko","family":"Kametani","sequence":"additional","affiliation":[{"name":"Department of Pediatric Dentistry, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3141-8173","authenticated-orcid":false,"given":"Toshinori","family":"Ando","sequence":"additional","affiliation":[{"name":"Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima 734-8553, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8672-9625","authenticated-orcid":false,"given":"Shinnichi","family":"Sakamoto","sequence":"additional","affiliation":[{"name":"Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima 734-8553, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chieko","family":"Mitsuhata","sequence":"additional","affiliation":[{"name":"Department of Pediatric Dentistry, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6652-0007","authenticated-orcid":false,"given":"Mikihito","family":"Kajiya","sequence":"additional","affiliation":[{"name":"Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima 734-8553, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0235-6428","authenticated-orcid":false,"given":"Katsuyuki","family":"Kozai","sequence":"additional","affiliation":[{"name":"Department of Pediatric Dentistry, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryota","family":"Nomura","sequence":"additional","affiliation":[{"name":"Department of Pediatric Dentistry, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,2,12]]},"reference":[{"key":"ref_1","first-page":"29","article-title":"Surgical management of impacted incisors in associate with supernumerary teeth: A combine case report of spontaneous eruption and orthodontic extrusion","volume":"303","author":"Das","year":"2012","journal-title":"J. Indian Soc. Pedod. Prev. Dent."},{"key":"ref_2","first-page":"362","article-title":"Mesiodens--diagnosis and management of a common supernumerary tooth","volume":"69","author":"Russell","year":"2003","journal-title":"J Can. Dent. Assoc."},{"key":"ref_3","first-page":"15","article-title":"Clinical investigation of supernumerary teeth at the department of pediatric dentistry of university hospital","volume":"30","author":"Akitomo","year":"2020","journal-title":"POMS"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"218","DOI":"10.1007\/s11282-020-00432-3","article-title":"Analysis of the distribution of supernumerary teeth and the characteristics of mesiodens in Bengbu, China: A retrospective study","volume":"37","author":"Zhao","year":"2021","journal-title":"Oral Radiol."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"100","DOI":"10.1016\/j.pdj.2020.10.001","article-title":"A new supernumerary tooth occurring in the same region during follow-up after supernumerary tooth extraction: A case report","volume":"31","author":"Akitomo","year":"2021","journal-title":"Pediatr. Dent. J."},{"key":"ref_6","first-page":"546","article-title":"Radiographical and histological observations of newly formed root in the site of young permanent tooth displaced in trauma","volume":"19","author":"Yamashita","year":"1981","journal-title":"Jpn. J. Ped. Dent."},{"key":"ref_7","first-page":"204","article-title":"Anterior supernumerary teeth--assessment and surgical intervention in children","volume":"3","author":"Primosch","year":"1981","journal-title":"Pediatr. Dent."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"345","DOI":"10.1016\/j.jcma.2015.10.013","article-title":"Clinical evaluation of the timing of mesiodens removal","volume":"79","author":"Shih","year":"2016","journal-title":"J. Chin. Med. Assoc."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"71","DOI":"10.1080\/15476278.2017.1332554","article-title":"The epidemiology of supernumerary teeth and the associated molecular mechanism","volume":"13","author":"Lu","year":"2017","journal-title":"Organogenesis"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"e236395","DOI":"10.1136\/bcr-2020-236395","article-title":"Non-syndromal multiple supernumerary and permanent impacted teeth in mother and her one child","volume":"13","author":"Rai","year":"2020","journal-title":"BMJ Case Rep."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Palikaraki, G., Vardas, E., and Mitsea, A. (2019). Two rare cases of non-syndromic paramolars with family occurrence and a review of literature. Dent. J., 7.","DOI":"10.3390\/dj7020038"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"e241213","DOI":"10.1136\/bcr-2020-241213","article-title":"Four erupted supernumerary teeth around the maxillary second molar","volume":"14","author":"Tominaga","year":"2021","journal-title":"BMJ Case Rep."},{"key":"ref_13","first-page":"363","article-title":"Chronology of deciduous and permanent dentition in Japanese children II Part 2: Permanent dentition","volume":"57","author":"Arita","year":"2019","journal-title":"Jpn. J. Ped. Dent."}],"container-title":["Dentistry Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2304-6767\/11\/2\/49\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T18:32:19Z","timestamp":1760121139000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2304-6767\/11\/2\/49"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,2,12]]},"references-count":13,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2023,2]]}},"alternative-id":["dj11020049"],"URL":"https:\/\/doi.org\/10.3390\/dj11020049","relation":{},"ISSN":["2304-6767"],"issn-type":[{"value":"2304-6767","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,2,12]]}}}