When treatment is done incorrectly at the dentist, what happens after that (Failure to adjust crown height?)

hello,

I had a crown treatment at my local dentist 2 years ago (on #30). It wasn’t because I had pain from the crown I had in Korea, but because my gums had receded since I had it done 20 years ago, and a part of the inside of the gold tooth was exposed. I asked them to do it as conservatively as possible, removing as little tooth as possible, and I underwent the treatment.

When I extracted and opened the tooth, fortunately there was no cavity, but the dentist removed the old amalgam without my consent and shaved it down a little more. He said this was for biting efficiency. Immediately after the treatment, the sensitivity increased significantly, which it had not before, so I talked to him and he said it would get better with time. After this treatment, I naturally stopped chewing on the treated side.

I urgently visited the dentist because I had severe pain in my molar (on #31) next to which I had a crown treatment two years ago. It happened about a month ago. The tooth (#31) cracked and the nerve inside died, which caused it to become like that. So I received root canal treatment as recommended, and I am planning on getting a crown as the next step.

Then, a few days ago, I looked in the mirror and realized that there was a big gap between the crown I had placed two years ago and the upper teeth. So, I looked at the old X-rays and I could clearly see that the crown I had placed two years ago was lower than its original height.

I met with the dentist who performed the procedure two years ago and talked to him, and he said it wasn’t a mistake, but that he designed it that way.

I was thinking that I should just move on positively, but then I thought that since this one tooth affects everything, if the crown was done wrong 2 years ago, shouldn’t it be corrected again? I’m planning to hear the 2nd option, but if it is true that the dentist made a mistake, is there any action I can take as a patient (fix request, sue, refund, compensations, etc). If there are any dentists or people working in the medical field, I would like to hear their opinions. Thank you. I’m worried that some of you may have trouble seeing the photos, so I’ve attached a link.

From the bottom left, these are wisdom teeth #31, #30, #29, and #28. #29 is a buckle that came in later, after I served in the military, so it is lower than the others.