Oro_antral fistula

-Definition:

Oro_antral fistula is an epithelized unnatural communication between maxillary sinus antrum and oral cavity.

-About disease:

*Aetiology:

  • mainly surgical as in dental extraction of second premolar or first molar
  • Accidental as in penetrating wounds.
  • Osteomyelitis.
  • Cancer maxilla.

*Symptoms:

  • History of dental extraction.
  • Nasal regurgitation of liquids.
  • Unilateral nasal discharge.
  • Bad taste in mouth.

*Signs:

  • The fistula may be visible through the oral cavity.
  • Purulent discharge seen coming through the fistula into the oral cavity.
  • Unilateral purulent offensive nasal discharge.

*Investigations:

  • CT nose and PNS.
  • X-ray panoramic view.

-probing should never be attempted.

-any associated sinusitis should be treated before any surgical intervention to improve success rates.

-treatment:

depend on the time of diagnosis and size of defect.

  • Heals spontaneous if the defect is less than 2mm
  • Direct primary repair with suture is done if discovered immediately after injury.
  • Refreshing of edges is done in cases discovered late and if the defect is smaller than 1 mm the do curettage and direct repair with sutures and if the defect is larger than 1 mm then cover the oral opening of fistula with a flap of palatal or buccal origin.

335 views No Comments
1Awesome
Loading...

Tags
There's no Tags

Category | ENT
Number of Posts by : 16
  • Medical Platform For Doctors and Medical Students which allows them Build their Medical Portfolios

    © All right Reversed.Dental Community Of The Genius Prof