Sorry no. What you describe is not a tort. At best it could be a breach of contract, however it does not appear an agreement ever occurred. Thus, what you have is a bad experience with a dental office that you will likely never return to.
You have ways of expressing your disappointment without suing. For instance, you can rate the dentist in on-line places like this. You can rate the dentist on Yelp. You can report the dentist to the BBB. If your concern is keeping this dentist from engaging in such sharp practices on other, these are the ways to address it.
Good luck to you.
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You have a lot of details not included, and it appears you did not enter into an agreement re the treatment plan and you lost nothing. It does not sound as though either of you has a claim. See an attorney if you have more details than you posted--that may change the equation, but I doubt it.
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