How Do Anesthesiologist gives you anesthesia when having teeth pull?

[Phirun]

when i got my tooth pull i didnt know how they gives me the anesthesia, i just remember they insert the needle and it felt like there were something inserted in after the needle is pulled, did they like have a tube in there? i wanted to know because i didnt get to see it

and thank you for the answer

 

[PianoMaster95]

They inject it in... like a vaccine.