Implementation
Patients were enrolled into the trial at the start of their visit by DT. At the end of the appointment to place the fixed appliances, DT then allocated the participant into one of the eight blocks and informed the dental nurse of which block they were in. DT then left the clinic and the dental nurse took out the relevant block folder. The patient was then asked to choose an envelope from the folder, and this was opened by the nurse, allocating them into intervention or control.