The presenting symptoms are not consistent with nerve injury, wait for another 24 hours, they probably will resolve.
This reaction appears to be the result of unintended stimulation of the trigeminal nerve network following the wearing off of the anaesthesia. Basically, your sinus mistake the return of sensation to your nasal passages as the presence of particulate matter there and try to expel it by sneezing. The same reaction can happened following any medical procedure that causes temporary numbness to the sinuses, such as optical surgery. There is some evidence that antihistamine medications may help calm this nerve network temporarily and let it get used to feeling air moving over it again. The only other treatment is time. Most dentists and doctors do not consider persistent sneezing following such a procedure to be a medical concern, no matter how annoying it may be to you!
Dear apple264:
Nerve damage through dental injection is highly unlikely. If your husband perceives liquid in the nose while consumption of liquid, it's probably that there is an oroantral communication present. Please go to see your dentist to manage the condition asap. The way i manage is to place colla-plug in the extraction site and suture the wound. So far, all patients heal uneventfully. Good luck
Regards
Did you ever find out what happened to your husband? I was at the dentist yesterday and received several injections. As soon as the anesthetic started to wear off, I started sneezing and also have very runny nose on the same side as the injection.