There are several types of retainers commonly divided into removable (clear plastic plate or plate with wire) or fixed types (wire glued behind the front teeth). The orthodontist will decide which retainer type is the most suitable for the patient.
It is very important that the patient wear the retainers as directed or the teeth will move. However, even with faithful patient cooperation it is possible that one or two stubborn teeth may try to rotate or move slightly. It is therefore very important to continue regular retainer check appointment to maintain the straightness of your teeth.