Is a dentist legally required to disclose materials used in a partial denture if they could cause allergic reactions?

My 77-year-old mother received a partial denture from a dental practice last year. After a couple days of wearing it, she began experiencing flu-like symptoms, fatigue, and nausea. Every time she resumed wearing it, the same symptoms returned by day three. She eventually stopped using it.

When she informed the dental office, they dismissed her concerns and told her it was unrelated. They also told her two of her remaining front teeth (which they previously said were fine) were now infected and needed to be extracted. She asked for antibiotics but was refused and sent home with the infection untreated.

Months later, she gave the denture another try and became sick again. I researched and learned that many partial dentures contain metal—sometimes low-grade metals—and my mother has known metal allergies (she can’t wear costume jewelry or even some metal buttons on clothing).

At no point did the dentist ask about allergies or inform her of what materials would be used in the denture. Given that this could explain her symptoms, I’m wondering:

Does a dentist have a legal obligation to disclose what materials are used in a denture, especially if they’re known to cause allergic reactions in some patients? Or to ask about potential allergies beforehand?

She’s still paying off the first partial and now they’re recommending a full replacement, which she can’t afford. We’re trying to figure out what recourse she might have, if any. Location: Utah