12. Retention Phase Treatment
After removing all orthodontic appliances, the retention period should be considered as
an extension of treatment. It is also necessary to understand what caused all
malocclusion and to create different types of retention devices for each patient, not for
the conventional form.
For example, in the case of open bite and class III malocclusion, a maintenance device
will be needed to control extrusion of maxillary first molar, and in the case of anterior
crowding, space, class Il malocclusion, deep bite, and reverse occlusion; it is desirable
to design the maintenance device to prevent relapse.
It is important to achieve satisfactory results not only for patients but also for doctors
through understanding of tooth root resorption and decalcification, which are the side
effects that can occur after orthodontic treatment.