The cost of braces can include many things, as it depends on which type of braces you may have done, the cost can go up. Materials play a large part in the cost of braces, the more expensive the material is for a certain type of appliance, the total cost will go up. As well, the longer you need to wear braces, and have continuous tightening appointments, the more expensive the braces can be, as you will be visiting your orthodontist or dentist more often for them to check up on how your teeth are moving.