The split plate is unquestionably the removable expansion appliance most prescribed by practitioners. Two screws fitted on it must be activated at a rate of 0.025mm twice a week to provide semi-rapid expansion. The Split Plate is actually a Schwarz modified with added acrylic pads. Because these pads are smooth, the appliance helps correct the maxillary transverse without any adverse effect on the mandible. The Split Plate is an excellent example of an appliance often fitted with complete pads that can nonetheless be modified during treatment. Note also that in order to ensure best results on the entire maxillary, patients must keep their appliances on while eating.
Material required for manufacturing
– Upper stone model
– Lower stone model
– Articulated wax with 2 mm space between the molars
Patients may choose the colour of their appliances. Regular acrylic is then replaced with coloured acrylic. One to three colours may also be chosen per appliance. These options actually encourage children to cooperate closely during orthodontic treatment