Possibly...: but also could be unrelated. Have dentist recheck you.
Answered 2/16/2015
3.2k views
Lower molar?: If this was a lower molar, the chance of it directly causing a sinus infection are highly unlikely. If you have been fighting a chronic infection however, your resistance may be lowered and more prone to a different infection.
Answered 5/6/2016
3.2k views
Not uncommon: The maxillary sinus may be accidentally opened during the tooth extraction and cause complication after tooth extraction. See your dentist for evaluation, diagnosis and proper treatment.
Answered 2/16/2015
3.2k views
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