Simple straightening can sometimes be carried out as quickly as 6 months, particularly if it’s only the front 6 teeth. However, a relatively short treatment like this usually produces limited changes and this is not always a long-term solution as often this isn’t enough time to move the whole tooth, including the roots, into the right place. This may mean the teeth may quickly move back to their original positions once the braces are taken off. It often takes between 1 or 2 years to get the teeth to bite in a better way, in harmony with the jaws and lips. It may take longer for more difficult problems.