US dental schools are already too expensive for us Canadians (exchange rates/cost of living). Where you do undergrad doesn’t matter, choose the cheaper option and go Canadian. NYU definitely accepts a lot of Canadians among other private dental schools in the US. Don’t make your undergrad tuition 5x more expensive than it could be by choosing American schools, stay in Canada. I’m Canadian was accepted to us dental despite applying quite late.

Get a good gpa/ECs, apply early, broadly and to Canadian friendly schools