Hey
@flowerya, very well done!

you did amazingly and I am impressed how well you managed to advocate for yourself and explain the things that scare you. Glad the hygienist was good. I think I would be pretty disappointed and scared if I got someone else to treat me than the person I was ready to see. It sounds like all went well though.
When it comes to the shots, please do talk to your dentist. Most people are super scared of shots anyway so your dentist will be used to having that conversation. If you feel you'd like to try something to calm down beforehand, contacting the practice is a good idea. Better late than not at all.
It may also be good to explain your past experience to them and prepare them for your raising hands unexpectedly. You may also want to have a conversation about what they can do to make the shots comfortable (there are many techniques that can be used) and also to agree on a stop sign (believe or not, even a shot can be interrupted and continued later). In some parts of the mouth, it is possible to have the shots entirely painlessly. Where are the two teeth placed?
I also highly recommend to ask them not to show you the syringe and not to look at it yourself. It has a strange form and looks way more scary than it is. I always make sure to look as much up as I can so I can't see what is happening in the mouth.
If you like some reading on what can be done with shots, take a look here:
Are you terrified of dental injections? Find out why shots may be painful, how to make them comfortable, and what to do if you have needle phobia.
www.dentalfearcentral.org
There are no scary pictures in the article, just explanations and tips on what can be done.
Good luck

and fingers crossed! I am sure you will be fine, your practice looks like they really care.