Both braces and Invisalign have their pros and cons. Generally, braces are the better option for teenagers or young adults, whenever Invisalign is more suitable for adults. There may also be certain reasons for choosing a particular path. Invisalign and similar products are made of plastic which means they cannot apply strong forces on the teeth - for that reason, some complex cases need to be treated with braces regardless of the age. From the other side, if a teenage patient if disciplined enough to use the aligners as it is instructed, he/she can use Invisalign to align teeth as well.