There are instances wherein a bracket pops off especially on your first few months due to a number of reasons. Always keep in mind that your brackets are just glued on, which means that they can be removed easily later on. Once the glue bond is broken, the bracket will then come off. Call the dental office and set for an appointment for re-gluing if this happens to you. Some dental clinics are asking for extra fee on this. It is normal for the brackets to pop off from time to time. Having the brackets glued is not an easy task and it might take you minutes before it sticks.