Metric Space. A metric space is a set with a global distance function (the metric) that, for every two points in, gives the distance between them as a nonnegative real number. A metric space must also satisfy. 1. iff, 2. , 3. The triangle inequality.
PAYING FOR INVISALIGN TREATMENT. Many dental insurance plans cover Invisalign treatment just as they would other orthodontic treatments like metal braces. Plans may cover up to $3,500 of Invisalign treatment. Talk to your Invisalign-trained doctor or insurance provider to find out how much youâre covered for.
The short answer: it depends. Costs are averaged between $3,500 and $6,000 for many patients for a full or express Invisalign treatment fee. Please note that so called Invisalign Express could cost less but is limited to only 10 trays or fewer.here are two ways that might reduce the total cost for Invisalign. 1  Insurance. 2  According to a 2010 Invisalign survey, about twenty-five percent of Invisalign patients received an average reimbursement of $500 from insurance companies.