Like the moon, a set of perfectly white teeth is bright, alluring, and difficult to obtain without 238,857 miles of dental floss. Lasso a luminous glow with today's Groupon: for $39, you get a dental checkup and take-home whitening kit at Pacific Dental Aesthetics in Manhattan Beach (a $373 total value). The package includes:

• A dental exam (an $83 value)
• A set of x-rays (a $140 value)
• Custom-made trays and six syringes of whitening gel (a $150 value)

Pacific Dental Aesthetics houses advanced dental technology and an experienced staff to keep teeth hale and handsome. Get grins on the road to pearly whiteness with a pair of appointments. During the first visit, chompers submit to a thorough inspection by both human eyes and a powerful x-ray camera. Dental radiographs can detect oral-health problems such as tooth decay, developing abnormalities, cysts, or bone loss caused by an impatient tooth fairy. The office’s dental dynamos also take mouth impressions to construct a custom-tailored whitening tray. In the second appointment, clients pick up the trays, six syringes of whitening gel—enough for up to two weeks of treatments twice a day—and a detailed primer on proper use. Like stainless-steel dental floss, the whitening trays can be used for the rest of each mouth’s lifetime. Pacific Dental's whitening gel is available in varying levels of potency, helping to ensure that even those with oral sensitivities needn’t shy from shifting their shade.