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Dental Office General Policy Handbook

Tooth Mobility - Miller Classification

Class 0

  • Normal (physiologic) movement when force is applied.

Class I

  • Mobility greater than physiologic.

Class II

  • Tooth can be moved up to 1mm or more in a lateral direction (buccolingual or mesiodistal).
  • Inability to depress the tooth in a vertical direction (apicocoronal).

Class III

  • Tooth can be moved 1mm or more in a lateral direction (buccolingual or mesiodistal).
  • Ability to depress the tooth in a vertical direction (apicocoronal).

The AAP definition of tooth mobility is "The movement of a tooth in its socket resulting from an applied force".

References:

  • J Periodontol; July 2001.
  • Miller PD Jr. A classification of marginal tissue recession. Int J Perio Rest Dent 1985;5(2):9-13.
 
Written by Jacob Hodara

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