2. Acute pericoronitis
• Incomplete eruption of a wisdom tooth
produces a large stagnation area under the
gum flap. It can easily become infected,
causing pericoronitis.

3. Cont…
Pericoronitis is caused by a mixed infection and
various pathogens of dental plaque,
particularly anaerobes, can be causative.

4. Subacute phase
• During this phase, the systemic features
become less acute. The patient experiences
swelling, jaw stiffness regional
lymphadenopathy and pus discharge

5. Factors contributing to pericoronitis
• Impaction of food and plaque accumulation
under the gum flap
• An upper tooth biting on the gum flap
• Acute ulcerative gingivitis (rarely)

6. • Reverence :
• Essentials of Oral Pathology and
Oral Medicine 7th ED
Thank
• Chpter” 5 ……Page” 82
you