Abstract
We experienced a rare case of inverted impaction of the maxillary left deciduous central incisor.
This patient had visited our clinic because his parents were anxious about the delayed eruption of his maxillary left deciduous central incisor. He was five years old at that time. In this case, no difinite history could be obtained as to whether this tooth had failed to erupt.
In the oral examination, there is no anomaly except for the absence of the maxillary left deciduous central incisor and the non unified median line of upper and lower teeth was found.
In the X-ray examination, we recognized an inverted maxillary left deciduous central incisor. There were no supernumerary teeth, odontoma or tumors. During the observation, we found exposure of the root surface at the labial cervical region.
After 1 year and 2 months, we extracted the impacted tooth and we observed it histopathologicaly by microscope.
1) The impacted deciduous tooth had a strong resemblance to his erupted maxillary right deciduous central incisor.
2) Resorption occurred at the root of impacted tooth and a small amount of cementlike hard tissue was found there.
3) We found much secondary dentin on the wall of pulp cavity in the labial cervical region. This part was exposed on the gingiva during the observation.
