1 If X is a topological (or metric) space and M is a metric space, then the set of all bounded continuous functions from X to M forms a metric space if we define the metric as above: d (f, g) = sup x in X d (f (x), g (x)) for any bounded continuous functions f and g.
Invisalign is orthodontic appliance, so since orthodontic treatment is allowed as an FSA expense, Invisalign is covered. Different companies have different rules concerning amounts set aside and the timing of how funds are used for orthodontics.
Using your FSA to pay for Dental Expenses ` Eligible Dental Expenses Dental procedures such as teeth cleaning, sealants, fluoride treatments, X-rays, fillings, extractions, dentures and other dental ailments are all eligible expenses that can be paid for with your Flexible Spending Account (FSA).sing your FSA to pay for Dental Expenses ` Eligible Dental Expenses Dental procedures such as teeth cleaning, sealants, fluoride treatments, X-rays, fillings, extractions, dentures and other dental ailments are all eligible expenses that can be paid for with your Flexible Spending Account (FSA).