As with all of these things, it depends how much you can research what you are doing and what risk you want to take.
When I first had a retainer, they put this hair-thin wire in the clips and it didn't make any sense to me, it was so thin, it seemed pointless until the next morning when my teeth were really sore.
The dentist knew that because they are trained. They know when to adjust wires etc. same with invisiline: sure you aren't going to die but that doesn't mean you can't do some damage to your teeth or jaw.
When I first had a retainer, they put this hair-thin wire in the clips and it didn't make any sense to me, it was so thin, it seemed pointless until the next morning when my teeth were really sore.
The dentist knew that because they are trained. They know when to adjust wires etc. same with invisiline: sure you aren't going to die but that doesn't mean you can't do some damage to your teeth or jaw.