If you either live in Toronto, or are planning to travel there specifically to have dental work performed, then you will need to first gather some information. Finding a dentist in Toronto need not be a problem, if you know where to look.
When looking for a dentist, you should find one which matches certain criteria. These criteria will differ depending on your circumstances. For example, if you live in Toronto, then you will need the dentist to be quite close to either work or home, but if you are travelling from the USA to have work done, location will not be important.
The dentist should be qualified with all the relevant bodies, and also have been in business for quite some time. It is much more reassuring to use a dentist whose practice has been running for a number of years.
The dentist should also be able to take payment in a variety of ways. Whether it be cash, credit card or through an insurance policy, the dentist must cater to your needs and the various ways you may pay for their services.
Another good idea, would be to do a little research online and see what forums and websites there are. You may find that certain dentists have even been reviewed, and if you were considering having some specialist work done, this will be invaluable indeed.