Inverted Maxillary Third Molar Impaction within the Maxillary Sinus: A Rare Case Report

Area of Science:

• Dentistry
• Oral and Maxillofacial Surgery

Background:

• Maxillary third molars are frequently impacted, with various impaction types documented.
• Inverted maxillary third molar impaction is exceptionally rare, with limited published cases.

Observation:

• A 48-year-old male presented with an inverted maxillary third molar.
• The tooth was positioned within the maxillary sinus, contacting its posterior wall.
• Part of the crown extended into the infratemporal fossa.

Findings:

• The impaction's anatomical complexity and asymptomatic nature led to conservative management.
• A 2-year follow-up confirmed the stability of the impaction's position.
• This represents the first reported instance of an inverted maxillary third molar in this specific anatomical location.

Implications:

• This case expands the understanding of rare maxillary third molar impaction presentations.
• Congenital, non-iatrogenic origins are possible for such rare impactions.
• Comprehensive dental history and radiographic evaluation are crucial for clinical decision-making in similar cases.