Submasseteric Infection: A Rare, Deep Space Cheek Infection Causing Trismus

Area of Science:

• Infectious diseases
• Pediatric dentistry
• Oral and maxillofacial surgery

Background:

• Submasseteric space infections are uncommon, especially in primary school children.
• These deep facial space infections typically originate from odontogenic sources, such as pericoronitis of a third molar.

Observation:

• Infections can be misdiagnosed as lymphadenitis or pyogenic parotitis.
• The primary clinical sign of a masticatory space infection is trismus (difficulty opening the mouth).

Findings:

• Cardinal signs include a palpable, firm mass within the masseter muscle.
• Overlying cellulitis and trismus are characteristic findings.

Implications:

• Prompt diagnosis is crucial to prevent complications.
• Highlights the importance of considering deep space infections in pediatric patients with facial swelling and trismus.