Home / Orthodontics / THIRD MOLARS (2).. 1


  • Third molars are the teeth which are most often missing, impacted and with altered morphology.
  • Advances in dental anthropology states that there is a reduction in the number of teeth and size of jaws on evolutionary basis for the past 1,00,000 years.
  • Third incisors ,third premolars and  fourth molars have disappeared already.


  • There is great variation in the timing of development, calcification, and eruption of third molars.
  • Development may begin as early as 5 years or as late as 16 years, with the peak formation period at 8 or 9 years.
  • Calcification can start at age 7 years in some children and as late as age 16 years in others.
  • Enamel formation is normally complete between 12 and 18 years and root formation is normally completed between 18 and 25 years.

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