A cracked tooth isn't treatable once the crack reaches beneath the gumline, according to the AAE. This means a dentist will need to remove the tooth, but it does not mean you're left with an empty space in your mouth; an oral surgeon can install an implant in your jawbone to replace the root of the tooth. This implant is then covered with a crown so that it looks as much like your original tooth as possible.
No matter how you and your dentist decide to treat a cracked front tooth, it's important to take care of it after treatment. Brushing twice a day with a fluoride toothpaste such as Colgate Total® will protect your restored tooth from decay. You'll also want to check in with your dentist regularly to make sure the bonding, crown or implant remains in good shape.