“Invisible” removable aligners are perhaps the highest profile orthodontic appliance, with brands such as ‘Invisilign’ using widespread advertising campaigns. Whilst they have become increasingly sophisticated and refined it remains important to be clear about the circumstances in which these devices are best used and by whom.

Aligners are thin clear flexible plastic ‘mouthguards’ which fit closely over the teeth. A series of aligners is used to move the teeth incrementally according to a treatment plan developed by the orthodontist. Aligner appliances are ideally suited to adult patients whose life-style or work commitments make it difficult for them to wear more visible conventional fixed appliances.