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ICD-10 K00.2
ICD-9 520.2

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List of terms related to Microdontia

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


Microdontia is a condition in which teeth appear smaller than normal. In the generalized form, all teeth are involved. In the localized form, only a few teeth are involved. The most common teeth affected are the upper lateral incisors and third molars. The affected teeth may be of normal or abnormal morphology.


There are 3 types of microdontia:

  • True generalized microdontia
  • Relative generalized microdontia
  • Microdontia involving a single tooth[1]

True Generalized Microdontia

All the teeth are smaller in size, mainly reported in the case of pituitary dwarfism. All the teeth are well formed and small.

Relative Generalized Microdontia

There is an illusion of true microdontia.

Microdontia involving a single tooth

Commonly affects the maxilla, mainly lateral incisors and third molar. the lateral incisors become peg shaped.



  1. J Indian Soc Pedo Prev Dent 2001; 19:1:38-39

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