Bonded fixed retainers are frequently used nowadays as the main and often the only retention protocol

after orthodontic treatment. The expectations for long-lasting lifetime stability of the occlusion led

orthodontists to seek the ultimate retention protocol with minimal patient compliance. Fixed retainers

have many disadvantages and risks that should be considered in advance. Different failures of fixed

retainers are described and categorized. The workflow for the retreatment of relapse caused in spite of

the fixed retainers is described with 3 case presentations: Open bite, Root movement and Bimaxillary

protrusion, all treated with clear aligner treatment (CAT). A revised retention protocol is suggested.