Invisalign benefits adults and older teens who need to straighten their teeth and correct mild to moderate bite issues. On average, Invisalign treatment takes between 12 and 18 months. Braces take between 18 months and 3 years. Why Is Invisalign So Much Faster Than Braces? Invisalign is faster than braces because it works differently to straighten teeth. Invisalign trays place …