Dr. Jacqueline Demko, who has worked on more than 500 Invisalign cases, oversees a team of enamel experts who discreetly arrange crooked teeth in handsome order with Invisalign, which combines highly advanced, 3-D computer graphics with the spells of old-fashioned orthodontia. The Invisalign process eschews cumbersome braces for clear, removable aligners that are virtually invisible to the unclothed eye. An initial 90- to 120-minute exam??which includes x-rays, photos, and impressions of mouth terrain??paves the way for a flurry of calibrated teeth sheaths that are designed to slowly shift walnut crackers into perfect alignment. Depending on the client?s teeth, as few as 12 or as many as 48 separate aligners will need to be worn during a period of 5?12 months before the straightening effect finally self-actuates in a sudden burst of pink smoke and slobber. Throughout the teeth-straightening journey, aligners are only removed when eating, brushing, flossing, or modeling a finely clenched jaw.