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.
How Does Invisalign Work? Every set of teeth is different, so no two orthodontic plans are identical. However, in most cases, the patient visits the orthodontist every two weeks to get a new set of aligning trays. Each set of trays is specifically designed by the orthodontist to move the teeth into the right positions.