There are two kinds of appliances when it comes to braces. One is fixed and the other is the one which patients can take out otherwise known as removable. It is not the patient�s decision in making a choice of which appliance would be used for treatment. The orthodontist selects either type of appliance based on the specific needs of the patient and how much compliance can be expected from the patient. Removable appliances are obviously easier to clean and to maintain but the chances of them being lost, misplaced, and broken is a lot higher. Fixed appliances on the other hand are used for more aggressive treatment. Cleaning and maintaining fixed appliances can be a little difficult and they often need the help of the orthodontist. Patients who have trouble with removable appliances can be switched to fixed ones.