Spontaneous Eruption of an Impacted Mandibular Premolar Associated with a Dentigerous Cyst

What is it about?

Dentigerous cysts (DC) are developmental odontogenic cysts associated with impacted or partially erupted teeth; they can occur at any location of the jaw. Being generally asymptomatic, they are fortuitously discovered when radiographs are taken to investigate a tooth eruption failure. In this report, we present a case of a 10-year-old girl presented with the absence of the right second mandibular premolar and retention of the right second primary molar. After clinical and radiological examinations a preliminary diagnosis of the DC was made and confirmed later histopathologically. The lesion was treated by marsupialization to allow eruption of the affected tooth and followed up for five years with no evidence of recurrence.

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Why is it important?

In our case, we have presented a Dentigerous Cyst related to a second right mandibular premolar of a 10-year-old girl. A conservative treatment by marsupialization has been adopted leading to complete disappearance of the lesion and the eruption of the affected tooth with no recurrence after a five-year follow-up.