Ask a Dentist. Get Answers to Your Dental Questions.
So likely what has happened is either from having more than one injection in same area the nerve has been injured. It could have been the needle itself piercing the nerve or the actually anesthetic chemically irritating the nerve, but either way you shouldn't still be numb. I would call your dentist's office so that they are aware of this. Likely the injury will heal itself in next couple days or week, but that isn't always the case. Your dentist needs to keep track of the timeline because this is an adverse event. Also is your tongue numb as well on that side?
That's good sign. That can also be anesthecized during a root canal and that usually makes things more uncomfortable. Although I can fully understand having the chin,lips, and teeth numb is uncomfortable as well.
Hopefully your nerve is simply irritated and will heal in next 2-3 days when the inflammation goes down. This is a rare occurrence, but it does happen with IAN injection.
There isn't anything from your perspective you can do, but wait. That being said your dentist will need to intervene if this persists for over a week.
No problem, if you have further questions please ask. Take care, and sorry for the unfortunate side effect you are experiencing.
Out of roughly 27,000 IAN injections 1 causes paresthesia (nerve sensory disruption). So as I stated you are rare, but this injection is common and performed a lot so it does happen.
If there isn't anything else you want to ask, if you would please provide a rating so I can close our conversation, thanks.