Like glaciers and tectonic plates, teeth are slowly yet surely on the move as they attempt to turn their hosts' mouths into a frozen tundra, then rip it apart like a bite-size Pangaea. Defeat your devious teeth with today’s Groupon: For $49, you get an initial Invisalign exam, x-rays, and impressions (a $325 value), plus $1,000 toward the full teeth-straightening system. Choose from the following locations:

• Lach Orthodontics in Oviedo.
• Savastano & Dunn Orthodontics in Longwood.
• Levin Orthodontics in Altamonte Springs and Lake Mary.
• College Park Orthodontics in Orlando.
• Caudill Orthodontics in Melbourne.
• The Brace Place in Clermont.
• Champion Orthodontics in Winter Garden and Orlando.
• Marris Orthodontics in Orlando.
• LeCompte Orthodontics in Port Orange.

Invisalign straightens crooked chompers through a combination of highly advanced 3-D computer graphics and the spells of good old-fashioned orthodontia. Orthodontists specially trained and certified in the Invisalign process eschew cumbersome braces for clear, removable aligners that are virtually invisible to the unclothed eye. An initial exam, including x-rays and photos ($325), pave the way for a flurry of calibrated teeth sheaths designed to slowly shift walnut crackers into perfect alignment. The total cost of an Invisalign treatment varies with each customer (it can run anywhere from $2,000 to $8,000); this Groupon gets you $1,000 to put toward that final cost. View some Invisalign FAQs here.

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 6–15 months before the straightening effect finally self-actuates in a sudden burst of pink smoke and slobber. Aligners are only removed when eating, brushing, flossing, or modeling a finely clenched jaw. Invisalign is now also available for teens. Call your location of choice to set up an appointment.