
She has wear facets on her molars that are suggestive of what we call "CR" bruxing or bruxing from a retruded position. The patient pulls the jaw posteriorly until the back teeth contact and then squeezes into a more forward position. Frequently, the earliest signs are wear facets on the distal marginal ridges or inclines of lower second molars.
Intervention at this point might be an occlusal guard and perhaps an equilibration.

The result was loss of #18 secondary to a root fracture; wear into the dentin and a crack into the fossa of #31 and fractured porcelain on the crown on #19.
It is entirely possible that much of this dentistry could have been avoided with early intervention if her dentists had recognized the consequences of no treatment and simply had the discussion with her.
I understand that there are many patients who might not want to do anything; however, if they understand the risks of no treatment and the long-term benefits of treatment, they WILL say yes.