Hi..
Can understand your concern..
As per your complain the roots of upper molars are in close contact with the lining of maxillary sinus and at times the root of the tooth can be present inside the sinus.
In case when the tooth is infected leading to formation pus formation thereby creating the abscess can lead to infection in the sinus as any of the root of the infected tooth may lay in close contact with the sinus or inside the sinus..
If the sinus gets infected it can lead to symptoms of
sinusitis as well as blood discharge from the nose..
But if you had just one episode of nose bleeding it is not necessarily due to abscessed tooth and can be due to a general
injury to any minor blood vessel of nose leading to bleeding.
I would suggest you to consult your
dentist and get evaluated as the dentist can take x rays preferably
Orthopantomogram (OPG) which shows teeth as well as
sinuses and helps in evaluating the cause of nose bleeding..
If dental problem is the cause, treatment of dental issue followed by antibiotics can help in relieving.
But in case nose bleeding is not due to
dental abscess you can wait and watch for the further episodes of nose bleed and if it happens you can consult an ENT expert..
Hope your query is solved..
Thanks and regards..
Dr.Honey Nandwani Arora.