Abstract
E ctopic eruption has been defined as eruption of a permanent tooth which takes place in such a manner that partial or total resorption of the root(s) of an adjacent deciduous tooth results. Most of the ectopically erupted teeth have been found to be lower lateral incisors.’ The degree of the displacement varies from milder forms to the condition in which the canine and lateral incisor are transposed, and in most cases of severe deviation the etiologic factors are unknown; early loss of the deciduous canines and retention of the deciduous lateral incisors seem to be the results rather than the causes of the ectopic eruption, and the mesial displacement of the permanent canine apparently lacks significance as an etiologic factor. 2 The prognosis for ectopically erupted lower lateral incisors is poor in cases of severe deviation, and extraction of the displaced tooth is the final treatment in most of the cases.2* B
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