Other typically unnecessary products some dentists push are night guards and sealants.
Unless you grind your teeth, you do not need a night guard.
There is normal wear and tear that wears down our teeth over time unless it is happening faster than expected; it’s not a sign of grinding.
And sealants are similar to the fluoride treatment.
These are typically unnecessary unless you have a child who is terrible at brushing their teeth and is highly cavity prone.