Invisalign is the method of straightening misaligned teeth in both children and adults. It is a cross between a gum shield and a brace, but is best described in layman’s terms as a removable brace. Being transparent in appearance the brace is simply fitted over the top or bottom teeth, and left to do its job while the patient goes about their daily routine. The brace is changed usually every fortnight and works exactly the same way as a conventional brace, albeit that it is removable and replaceable by the patient. The problem with conventional braces is that they are cumbersome and awkward; the patient finds it difficult at times to carry out simple oral hygiene care. The pressure of common braces is also a damaging factor on the teeth as it often causes more wear on them. The Invisalign method allows the patient to remove the device for eating, drinking and cleaning of the teeth, it also allows X-rays to be taken which aren’t possible with conventional braces. However, one disadvantage is that the dentist has to rely heavily on the discipline of the patient to keep the device in place for the maximum period each day. The treatment isn’t available or recommended to all patients, some teeth that are particularly misaligned will not benefit from using an Invisalign brace. It is made from a polyurethane material and this can cause an allergic reaction in certain patients, although that is very rare. A London W1 dentist says that most western countries are in favour of the use of these braces, especially in children who traditionally have been subject to bullying in schools. Adults favour them as well as it allows them to remove the braces when they are socialising or networking.