Spontaneous third-molar eruption after second-molar extraction in orthodontic patients

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
Cristina De-la-Rosa-GayCosme Gay-Escoda

Abstract

This retrospective study was conducted to assess the eruption of third molars by using panoramic radiographs and to identify the variables associated with unsuccessful eruption. The subjects were 48 patients who had 128 permanent second molars extracted during or before orthodontic treatment. Their ages at extraction were 11 to 23 years. The position of the third molars was assessed from panoramic radiographs taken before second-molar extraction and after third-molar eruption. The median time of eruption was 3 to 4 years (interquartile range, 2 years). A successful final position was defined as eruption with proximal contact with the adjacent first molar and an angle between these 2 teeth of no more than 35 degrees. A total of 96.2% of the maxillary and 66.2% of the mandibular third molars erupted in good positions. The maxillary third molars uprighted and successfully replaced the second molars. In the case of Nolla developmental stage > 8, the proximal contact could remain open. Most mandibular third molars uprighted and successfully replaced the second molars. Most unsuccessful eruptions of mandibular third molars were due to excessive mesial tilting or lack of proximal contact. Unsuccessful third-molar eruptions occurred in...Continue Reading

References

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Citations

Feb 17, 2009·The Angle Orthodontist·Toru KitaharaYuji Shiratsuchi
Nov 17, 2007·The Angle Orthodontist·Nak-Chun ChoiKee-Joon Lee
Feb 4, 2014·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Kyung-Keun ShiKee-Joon Lee
Sep 6, 2011·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Christos LivasChristos Katsaros
Mar 4, 2010·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Cristina De-la-Rosa-GayCosme Gay-Escoda
Dec 8, 2009·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Marcos Roberto de FreitasJosé Fernando Castanha Henriques
Jan 14, 2009·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Mehmet BayramSelim Arici
Dec 18, 2015·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Kun Chen, Yang Cao
Jun 4, 2015·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Hiroshi TomonariShouichi Miyawaki
Jun 27, 2014·PloS One·Mohammad Khursheed AlamAkram Hassan
Oct 12, 2016·L' Orthodontie française·Michael Mah, Kenji Takada
Jan 27, 2018·Clinical Oral Investigations·Kaisa Rytkönen, Irja Ventä
Feb 17, 2015·World Journal of Clinical Cases·Konstantinia Almpani, Olga-Elpis Kolokitha
Sep 3, 2019·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Gerardo la MonacaRoberto Pippi

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