Orthodontic retention aims to maintain the teeth in their corrected positions after the completion of orthodontic tooth movement. Teeth have a tendency to return towards their initial positions due to tension in periodontal fibres, particularly those around the necks of the teeth (interdental and dento-gingival fibres). Due to remodeling of the periodontal fibers the first 8 month post orthodontic treatment are crucial.Therefore, bonded retainers have become increasingly popular to prevent unwanted relapse and enhance stability. Longer-term retrospective studies of the effects on periodontal...