Honestly, it does hurt a little just like any other needle would. It's a quick pinch and then it's over before you can say anything. Don't worry about it too much. (: I had countless needles from the dentist when i was around 8 because i didn't brush often. xD Man, i got to stay home from school and eat chicken soup tho. Good times. Hahaha.
Like Mary said, it feels exactly like getting a pinch. Then your gums will be numb.
Just don't think about it. Brace yourself, then think of your most favorite song and the application is over in like 2 seconds.
I think it depends on what procedure you're doing... for me an ordinary tooth extraction doesnt hurt a bit, but a wisdom tooth extraction hurts me.. my tooth is deep so the 1st inject isnt so effective and i still feel pain so my dentist had to inject me deeper, and that hurts like a bitch. Oh, im not scaring yoou, im just saying it depends on procedure and your pain threshold. :)
Guys, I have a question. Does it hurt so much when your gums was injected with anaesthesia? I'm going to the dentist and I'm having a panic attack cause I'm weak when it comes to physical pain.