Oronasal Fistula

Oronasal Fistula

If your pet is experiencing an abnormal rate of sneezing, nasal discharge, and bad breath, he/she might have this condition.

Dr. Stephen Juriga headshot

Originally published by Stephen Juriga, DVM · part of the AOSN network.

Signs you might notice

What you need to know

It is an abnormal opening between the oral and nasal cavity.

What you need to know

Usually occurs after an infection of or loss of a tooth (most commonly canine tooth).

What you need to know

May cause chronic nasal infections.

What's really going on

An oronasal fistula is an opening or communication between the oral and nasal cavity. This occurs secondary to periodontal disease or loss of any maxillary (upper) teeth, most commonly the canine tooth. Signs of this condition include sneezing, nasal discharge, and bad breath odor.

Oronasal fistula needs to be evaluated with dental x-rays for impacted tooth/root structures. Surgical repair is accomplished with a gingival flap, debridement of the site, preservation of blood supply to the flap and tension-free closure of the site for good healing.

How it may look

Oronasal fistula at the previous upper canine site
Oronasal fistula at the previous upper canine site

How a specialist helps

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Possible therapy / treatment

Surgical flap used to close the site with absorbable sutures
Surgical flap used to close the site with absorbable sutures

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