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.
Ask your dentist about braces. Your dentist can take X-rays and perform bite tests that will help determine whether you need to see an orthodontist. 1  Your dentist can also tell if your teeth are overcrowded or just a little tight.sk your dentist about braces. Your dentist can take X-rays and perform bite tests that will help determine whether you need to see an orthodontist. 1  Your dentist can also tell if your teeth are overcrowded or just a little tight.