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.
