Try to contact the local dental society to see what services may be within your area. If there's a dental school nearby, you could try to be seen there. They do charge usually but may also accept medicaid.
It doesn't sound like oral thrush since its not wipeable, usually a diagnostic test to see if it is thrush. It may be lichen planus? Not sure. You may want to ask your dentist to check it again or get a referral to someone else who can diagnose it properly
It sounds like the gums are inflamed, possibly due to a poor fit or excess cement trapped around the crown causing an irritation.
I'm surprised they put you in a temporary for 5 weeks. When are you planning to put the crown permanently in?
If you're asking for personal experience, I would recommend asking this question in the community forum. This section is for asking a dentist. I would say that if both dentists are recommending it, it sounds like it needs to be done
My guess is that anyone's impression or scan is their personal health information. While I guess you could google this type of file and try to find one, I don't think you should expect any practicing dentist to give you a file of their own patients since its a violation of the patient's privacy. You could ask a dentist to scan your teeth and ...
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