Third Molar Eruption Mechanisms and Patterns

Autores

  • Winnie Zhang

DOI:

https://doi.org/10.5195/d3000.2016.49

Palavras-chave:

Third molars, etiology, impacted, abnormality, hereditary

Resumo

Third molars are highly variable in their presence and form. This report focuses on a horizontally impacted third molar and analyzes the potential etiology of this situation. Upon a clinical and radiographic examination, it was noted that the patient had four third molars present. The patient’s third molars began erupting around the age of 19. Currently, they are asymptomatic with incipient caries on the occlusal surfaces. While three of the third molars erupted in a normal orientation, one of the third molars (mandibular left) erupted in an orientation that would be classified as horizontal and/or mesio-angular. No treatment has been undertaken at the moment, however surgical extraction can be recommended with the prognosis being very good. For the clinician that has to treat dental complications that arise from abnormal tooth eruption, as seen in numerous genetic and acquired disorders, knowledge about the basic molecular mechanisms involved may become extremely important.

Referências

Prevalence of impacted teeth and associated pathologies--a radiographic study of the Hong Kong Chinese population. Chu FC, Li TK, Lui VK, Newsome PR, Chow RL, Cheung LK. Hong Kong Med J. 2003 Jun;9(3):158-63. PMID:12777649.

Mandibular third molar impaction: review of literature and a proposal of a classification.

Juodzbalys G, Daugela P. J Oral Maxillofac Res. 2013 Jul 1;4(2):e1. PMID:24422029.

Cellular, molecular, and genetic determinants of tooth eruption. Wise GE, Frazier-Bowers S, D'Souza RN. Crit Rev Oral Biol Med. 2002;13(4):323-34. PMID:12191959.

Patterns of third-molar agenesis and associated dental anomalies in an orthodontic population. Celikoglu M, Bayram M, Nur M. Am J Orthod Dentofacial Orthop. 2011 Dec;140(6):856-60. PMID:22133951.

Third molar agenesis and size reduction of the remaining teeth.

Garn SM, Lewis AB, Kerewsky RS. Nature. 1963 Nov 2;200:488-9. PMID:14076752.

Third molar agenesis and variation in size of the remaining teeth.

Garn SM, Lewis AB, Kerewsky RS. Nature. 1964 Feb 22;201:839. PMID:14161232.

Third molar impaction and agenesis: Influence on anterior crowding. Esan T, Schepartz LA. Ann Hum Biol. 2016 Feb 8:1-29. PMID:26856343.

Downloads

Publicado

2016-09-28

Edição

Seção

Infancy & Adolescence