No! That is a very sweeping statement and therefore lacks medical basis. Each case should be evaluated individually. The fact is that many cases (malocclusions) can be treated with aligners, but there are some, mostly severe, that require alternative orthodontic treatment.
The duration of your aligner treatment depends on the misalignment of your teeth. Our dentist can give you an approximate number in months once your treatment plan is finalized. Most aligner treatments only last between 3 and 14 months.