Kristina,
Welcome to DFC! I had my first deep cleaning 2 years ago and was very scared and also worried about the anesthetic. My dentist first gave me topical and they wanted to give me the local so they would make sure I was comfortable the whole time, so he very slowly gave me injections in that area I didn't feel them at all after the topical was applied. I'm really glad I had the shots as I only felt one slight pain and they immediately gave me more local then no more. and my teeth felt great after. a little sensitive but they felt better! My hygenist had the patience and bedside manner of a total saint.. so that helped alot!