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A review of the available literature revealed 24 patients with Tessier no. 7 clefts from 2000 to 2020, including our patient. The most common clinical manifestation in patients with Tessier no. 7 clefts comprises bilateral facial clefts. Additionally, Tessier no. 7 clefts are more frequently found in boys or men, rather than in girls or women. The presence of an accessory maxilla with supernumerary teeth in a patient with bilateral Tessier no. 7 clefts is extremely rare. Early detection of craniofacial abnormalities is important, because it may influence patient prognosis and management.<\/jats:p>","DOI":"10.1177\/0300060520925680","type":"journal-article","created":{"date-parts":[[2020,5,21]],"date-time":"2020-05-21T06:12:40Z","timestamp":1590041560000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":9,"title":["A rare case of accessory maxilla: a case report and literature review of Tessier no. 7 clefts"],"prefix":"10.1177","volume":"48","author":[{"given":"Ming","family":"Sun","sequence":"first","affiliation":[{"name":"Department of Stomatology, the First Affiliated Hospital of Anhui Medical University, Hefei, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Na","family":"Lv","sequence":"additional","affiliation":[{"name":"Department of Stomatology, the First Affiliated Hospital of Anhui Medical University, Hefei, 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