Go.
I'm terrified of dentists too and hadn't been for over 15 years and my teeth were in a state. A recent abcess had OH physically dragging me into a dentists and pushing me up the stairs.
I've now been 4 times over last couple of months and have one more appointment.
I'm so happy I went. I've gone from feeling sick and faint, and shaking like a leaf to feeling perfectly ok about going now. OH came with me the first 4 times but next time I'm going on my own.
It's changed a LOT since I last went.
Injections - they now use a gel to numb your gum before the injections. The injections work really quickly now - in a couple of minutes - no more doing the walk of doom back out to the waiting room to sit and sweat for 15 minutes while you wait for it to work. I did feel a small amount of sensation during the injections a couple of times, but nothing like it used to be, and I've had back teeth done and I remember those injections used to be really painful. Not now.
I can hand on heart say I haven't felt a single thing through any of the treatment. And I've had two normal fillings (one in an infected tooth that needed two sessions), one massive filling in a broken down tooth that only had a little spike of tooth left sticking up (she's created a whole new tooth out of white filling, it looks fantastic), and I'm having one broken front tooth crowned. I've had the prep work done for the crown and I didn't feel anything. It didn't take much longer than a normal filling. I've got a temporary crown fitted to it and I look like a normal human being again. I've only got to go back to have the permanent crown fitted (they are made to fit you so it takes a couple of weeks).
I no longer have any twinges or aches, or sore gums. I no longer look like a wino with a mouthful of broken teeth. I no longer have bad breath from rotting teeth.
It was all done on NHS so cost me £219 in total.
Go.
I'm going to take my dentist a Thank You card at my last appointment. I'm going to keep going regularly. I'm honestly confident about it now, from being a nervous wreck at the mere thought of the word 'dentist'.