Dentigerous cyst in an uncommon site: a rare entity

Area of Science:

• Dentistry
• Oral Pathology
• Pediatric Dentistry

Background:

• Trauma to deciduous teeth can result in pulp necrosis.
• Pulp necrosis in primary teeth is a potential cause of dentigerous cyst formation.
• Dentigerous cysts typically develop around mandibular third molars or maxillary canines.

Observation:

• This case report details a rare instance of a dentigerous cyst.
• The cyst was associated with the developing germ of an upper permanent central incisor.
• The permanent incisor was impacted and displaced due to trauma to the overlying primary incisor.

Findings:

• The study presents an uncommon site for dentigerous cyst development.
• It links trauma to deciduous teeth to ectopic development of permanent tooth germs.
• Pulp necrosis of the primary incisor was the likely precursor to the cyst.

Implications:

• This case expands the understanding of dentigerous cyst etiology and location.
• It underscores the importance of monitoring permanent tooth development after primary tooth trauma.
• Early diagnosis and management are crucial for impacted teeth and associated cysts.