Is it normal to have so many trays? Invisalign

Invisalign is light force, safe form of orthodontics and has been a great innovation in dentistry to attain healthier smiles for adults and teenagers.  Every case is different and therefore treatment lengths vary greatly.  I have cases that are treatment planned for 5 aligners and cases, much like yours, that range to 45 aligners.  4 years ago an adjunct was introduced to work in conjuction with Invisalign to speed the process up.  The product is called Acceldent, a simple-to-use, hands-free device designed for quicker Invisalign treatment with only 20 minutes daily use. It is a FDA-cleared, Class II medical device.Through the use of gentle micropulses, called SoftPulse Technology, bone remodeling is accelerated, allowing teeth to move up to 50% faster.  This allows my patients to wear each set of aligners for 7 days rather than 14 days.  Treatments are then completed in half the amount of time.Good Luck and try to keep a positive attitude.  It will all be worth it! 

Seventy six trays is certainly a lot of trays.  You probably have a pretty severe case.  These often involve moving the back teeth a lot in cases with large number of trays.  Invisalign computer algorithm determines the number of trays for a given movement.  Your doctor might be able to change the desired movement to utilize less trays.