Like glaciers and tectonic plates, teeth are slowly yet surely on the move as they attempt to turn their host’s mouth into frozen tundra and then rip it apart like a bite-size Pangaea. Defeat devious teeth with this Groupon: for $2,799, you get a complete Invisalign orthodontic treatment at Pleasanton Smile Dental (a $6,000 value).

At Pleasanton Smile Dental, Dr. Sowjanya Srikantam uses Invisalign to straighten crooked chompers with a combination of highly advanced, 3-D computer graphics and up to 36 clear, removable aligners that are virtually invisible to the unclothed eye. An initial exam, including x-rays, photos, and impressions of the teeth, paves the way for the aligners. Patients then return to the office for regular checkups to ensure teeth are settling in to their new positions. View some Invisalign FAQs here.

Depending on the client’s teeth, as few as 12 or as many as 36 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.

While they're at the office for checkups, patients can take advantage of free WiFi. They can also watch a movie or listen to music while snuggling under blankets in the dental chair.