I get nervous just thinking about the dentist. Am I the only one who feels this way?

I can't help going because my tooth hurts, but
From the moment I sit in the dentist's chair, I feel myself tensing up for no reason.

I get nervous just hearing the sound of the machine.
I tend to get scared even before treatment starts.

So, as I kept putting it off, it felt like the need to go to the dentist was actually getting bigger.
I decided to at least get a regular check-up this time.

For those of you who, like me, are afraid of the dentist itself
How do you relax when you go to the hospital for the first time?