The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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Late development of a mandibular second premolar

  • Bicakci, Ali Altug (Department of Orthodontics, Cumhuriyet University, Faculty of Dentistry) ;
  • Doruk, Cenk (Department of Orthodontics, Cumhuriyet University, Faculty of Dentistry) ;
  • Babacan, Hasan (Department of Orthodontics, Cumhuriyet University, Faculty of Dentistry)
  • Received : 2011.08.17
  • Accepted : 2011.11.07
  • Published : 2012.04.30
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Abstract

In this report, we present the case of a girl with delayed odontogenesis of a lower second premolar for which she was followed up for 8.5 years. Congenital absence of permanent mandibular second premolars was observed at the initial radiographic examination at 8 years and 1 month. One year later, during the treatment period, an unexpected odontogenesis of a right second premolar was diagnosed on follow-up radiography. The original treatment plan was revised and a new plan was successfully implemented. This unusual case showed that the orthodontist's clinical philosophy must be flexible because unexpected situations can arise, especially when treating growing patients.

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References

  1. Rolling S. Hypodontia of permanent teeth in Danish schoolchildren. Scand J Dent Res 1980;88:365-9.
  2. Moyers RE. Handbook of orthodontics. 3rd ed. Chicago: Year Book Medical Publishers; 1972. pp.166-239, 473-6.
  3. Fass EN. Aberrant second premolars. ASDC J Dent Child 1970;37:494-8.
  4. Moorrees CF, Fanning EA, Hunt EE Jr. Age variation of formation stages for ten permanent teeth. J Dent Res 1963;42:1490-502.
  5. Nolla CM. The development of the permanent teeth. J Dent Child 1960;27:254-66.
  6. Ravin JJ, Nielsen HG. A longitudinal radiographic study of the mineralization of 2nd premolars. Scand J Dent Res 1977;85:232-6.
  7. Nielsen HG, Ravn JJ. A radiographic study of mineralization of permanent teeth in a group of children aged 3-7 years. Scand J Dent Res 1976;84:109-18.
  8. Lindqvist B. Extraction of the deciduous second molar in hypodontia. Eur J Orthod 1980;2:173-81.
  9. Nieminen P. Genetic basis of tooth agenesis. J Exp Zool B Mol Dev Evol 2009;312B:320-42.
  10. Kist R, Watson M, Wang X, Cairns P, Miles C, Reid DJ, et al. Reduction of Pax9 gene dosage in an allelic series of mouse mutants causes hypodontia and oligodontia. Hum Mol Genet 2005;14:3605-17.
  11. Ranta R. Hypodontia and delayed development of the second premolars in cleft palate children. Eur J Orthod 1983;5:145-8.
  12. Uslenghi S, Liversidge HM, Wong FS. A radiographic study of tooth development in hypodontia. Arch Oral Biol 2006;51:129-33.
  13. Rune B, Sarnas KV. Tooth size and tooth formation in children with advanced hypodontia. Angle Orthod 1974;44:316-21.
  14. Vastardis H, Karimbux N, Guthua SW, Seidman JG, Seidman CE. A human MSX1 homeodomain missense mutation causes selective tooth agenesis. Nat Genet 1996;13:417-21.
  15. Stockton DW, Das P, Goldenberg M, D'Souza RN, Patel PI. Mutation of PAX9 is associated with oligodontia. Nat Genet 2000;24:18-9.
  16. Garn SM, Lewis AB, Bonne B. Third molar polymorphism and the timing of tooth formation. Nature 1961;192:989.
  17. Alexander-Abt J. Apparent hypodontia: a case of misdiagnosis. Am J Orthod Dentofacial Orthop 1999;116:321-3.
  18. Uner O, Yucel-Eroglu E, Karaca I. Delayed calcification and congenitally missing teeth. Case report. Aust Dent J 1994;39:168-71.
  19. Coupland MA. Apparent hypodontia. Br Dent J 1982;152:388.

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