When stocking a new restaurant, it is important to purchase equipment and dishes designed for commercial use. I remember buying up a huge stock of really cool dishes on clearance sale from a retail outfitter (I think it was Banana Republic- why they were selling dishes, I'll never know.) The dishes seemed like they would hold up fine in our restaurant. Wrong. A few cycles through the dishwasher and every plate was chipped or cracked. Commercial dishes are more expensive than your household ones, but for good reason. They are made to stand up to the heavy use of restaurants.
More on Buying Commercial Restaurant Equipment