In this category using a broader interpretation of the
term “trauma”, resorptions may have resulted from
pressure from unerupted or erupting teeth or some
neoplasms, from biomechanical forces involved in
orthodontics, mechanical trauma (luxation and avulsion
injuries) and surgical, thermal or chemical trauma.
In all trauma induced (non-infective) tooth resorption
some damage to the cementum/cementoid-periodontal
membrane complex has occurred which stimulates
clastic activity. Trauma induced tooth resorption may
be subdivided into: (1) surface resorption; (2) transient
apical internal resorption; (3) pressure resorption; (4)
orthodontic resorption; and (5) replacement resorption.