Not possible for Canadians to attend American Schools anymore UNLESS your parents help you out with ~ $250,000.
I attended a US dental school back in 2011~2015 and that was when CAD/USD were 1 to 1 ratio.
There is no cheap American Dental Schools for Canadians (You can apply to Texas dental schools, but if you have the stats to get in to schools in Texas, you can get accepted at U of Toronto or Western in Ontario).
You're looking at $450,000~$500,000 USD (tuition & living expense all together).
Let's assume the total cost will be $450,000 USD.
That is about $565,000 CAD.
ABSOLUTE MAX AMOUNT of Professional School Loan you can get from TD/Scotia/RBC (any major Canadian Banks) is $300,000 CAD. Usually it is only $250,000 CAD.
You also need a STRONG co-signer with excellent credit history since the money is going to the US.
Let's assume you find an eligible co-signer (your parents), and was able to get $300,000 CAD loan.
OSAP gives you about $8000/year for Canadian students attending American dental school. That is $32,000.
If you do the math,
$300,000 (bank) + $32,000 (OSAP) = $332,000 CAD total loan you can get.
$565,000 - $332,000 = $233,000. You still need to figure out where you can get $233,000 CAD.
American dental school was possible when USD:CAD ratio was 1:1. Now it is 0.8:1.
IMO, it is not possible anymore to attend American dental schools for Canadians.
Save your money and just apply to Canadian Schools.