Bad Dentist Experience

I began taking my now 4 year old to the dentist approx when she turned 3... for a regular check up, as well as to get used to the dentist so that she wouldn't have a fear of the entire situation.
Yesterday she had an appointment because I think she has the beginning of a cavity. She has no pain, but I can see a teenie tiny "hole" on the surface of her tooth.

Anyhow, she sat on the chair and he looked in her mouth and said that he thought that she'd begin to have "the same problem on the other side of her mouth". So, he ordered his tech to begin x-rays and starting saying which teeth.

I said, "I don't want her to have any x-rays" and he said, "Ok, I'll work on that one tooth without X-rays but in order to see what's going on with any other teeth, I'll need X-rays".

Before I could say, "That would be great", he changed his mind and had a really upset look in his face.

He said, "I will not work on any part of her mouth without the recommended X-rays, you're not basing any of this on Science and there are obviously trust issues here".

Needless to say, this was very awkward, as he seemed to be becoming more angry at whatever he was thinking I may be thinking, than what I was actually saying.

I said, "You're our Dentist, this isn't about trust. This is about my daughter being 4 and her teeth being baby teeth without roots, an X-Ray and the fact that she's still growing and I'm not comfortable with that".

He pushed against the exam chair in his wheeled office chair roughly and stood up holding his hands in the air seeming even more upset- apparently at the fact that I wasn't just going with whatever he wanted.

I said, "We waited 25 minutes. You can give me 2 to decide if this is what I want."
He waved his arm in the air and walked away.

I then called my husband to ask what he thought about the X-rays but couldn't reach him so I called my Mom.
I decided that she needed the little cavity filled, and so I would allow the one X-ray for the tooth we had come in for.
The tech took the X-ray as I watched from the wall where she instructed me to stand so as to receive any radiation. My daughter sat very still - as we'd discussed on the way to the Dentist office.
As we sat waiting, I heard the Dentist say, "Where's the other one?" and the tech say, "She only wanted this one." Then him say, "Oh no."
He then came to me with the X-ray and said, "She's not a good patient and this is a bad X-ray because she's moving all over the place and we would need to numb her to get the X-rays that we needed. I don't feel comfortable working on her because of your trust issues with me. I am not going to have anyone making calls about X-rays in my office."

I said, "If you weren't going to work on her, why did you allow the X-ray to be taken in the first place"? He said, "Because I needed to see what was going on."
I said, "If you weren't going to work on her, why would you need to see what was going on?". He ignored that and said, "I will give you some referrals".
I was so upset. I said, "I don't want your referrals. Just give me the X-ray."
I told my little girl to get out of the chair and come to me. He was having some sort of screwed up little power trip issue at this point, because he seriously stood there after she said, "Excuse me" and wouldn't get out of her way. It was really uncomfortable!

I reached for her arm and led her to me and we walked out of the examination area.
We were given referrals and the X-ray and I left.

Obviously I'm upset... but I also have questions and would appreciate any advice you have regarding this.

If you're a Mom who doesn't feel comfortable about dental X-rays, is there a dentist who'll respect that?
What's your experience with this type of a situation and who would you suggest?

Thank you.