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.
Orthodontic care and dental insurance. How to know if itâs time for braces. The goal of orthodontics is to correct the alignment of the teeth for a beautiful smile and healthy bite. Braces are often used, but new techniques using retainers and removable plastic mouthpieces can avoid the need for braces.