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.
1 Invisalign is case-by-case because of the hard-costs that the Ortho is required to pay to Invisalign up-front. 2  At my ortho itâs $2,400 down for Invisalign, no interest for 12 months, payment of $250/month. 3  Less for Braces.4  My Ortho has something called Care Credit. 5  Itâs a dental financing plan based on your credit. Invisalign is case-by-case because of the hard-costs that the Ortho is required to pay to Invisalign up-front. 2  At my ortho itâs $2,400 down for Invisalign, no interest for 12 months, payment of $250/month. 3  Less for Braces. 4  My Ortho has something called Care Credit.