Designing a removable appliance
Some important points should be remembered in relation to appliance design:
• always design the appliance with the patient in the dental chair; this helps to avoid design errors
• keep the design as simple as possible: aim to carry out a few tooth movements with each appliance
• use the acronym ARAB to help to design the appliance in a logical sequence, ensuring nothing is overlooked: A, activation; R, retention; A, anchorage;
and B, baseplate.