First and foremost, how/where have you kept the broken tooth?
If its in a dry condition, it might have become brittle already. If you have kept it in saline/milk/saliva its good to go.
It also depends on where is the breakage as compared to gum. As in, where exactly above or below the gum. If there is good amount above the gum, there is a good posibility to retain same tooth.
But there are less chances of this happening.
There are crowns which look like natural tooth available, you can go for them.
Visit a dentist and he will tell you better.
Next Steps
Visit your dentist.