One reason orthodontic treatment for adults is different is that, when you are older, it is harder to enlarge your mouth to get all of your teeth to fit.
When you are growing, your jaw is more flexible and the orthodontist can stretch your mouth so everything fits.
However, after you finish growing, your jaw hardens and it becomes difficult for an orthodontist to stretch it.
While you can have your jaw enlarged surgically, most adults opt to have their teeth straightened without this step.
This may mean you need to have some teeth removed to make everything fit. This may not have been necessary if the treatment had been done when you were still growing.
However, there are many benefits in having orthodontic treatment at any age.
In adult life, it can help your digestion and your general health as well as preventing dental problems.
The main difference is that orthodontic treatment when you are older can be a bit slower and even slightly more painful than for younger patients.