The Moral Responsibility of Dentist as Health Care Professional

I went to the dentist.

He told me I'm grinding my teeth so hard at night I'm actually wearing down my fillings.

He told me this is typically a symptom of stress, before recommending I wear a mouth guard at night.

As a health care professional, shouldn't he at least have entertained the possibility of trying to lower my stress, rather than resign to the fact that my molars will perpetually attack each other?