Don't know who you've talked to, but I can tell you that invisalign works!!! It is quicker than braces...fact not fiction. It is better than braces in most cases;
1. Obviously hygeine is better. You can take it out to eat, brush and floss...fact
2. No shortened roots. With braces if they are overtightened...which happens more than you think...the roots of the teeth can become shortened.....fact Invisalign movements are computer controlled..no overtightening
3. Obviously more comfortable than braces...fact
4. Patients want the esthetics of invisalign...not metal braces...fact
5. You can use the invisalign aligners as a bleaching tray to whiten your teeth..fact
Over 20++++million aligners made...this says it all. Obviously it works!