Teeth, like icebergs, extend far deeper than can be seen with the naked eye and are essential to polar bears' survival. Chatter in snowy-white style with today's Groupon: for $89, you get an in-office Opalescence Boost teeth-whitening treatment from Dr. Adam N. Carson at South Beach Dental in Miami Beach (a $300 value).

Dr. Adam N. Carson and his sparkling staff polish teeth to ever-pearlier shades in the modern offices of South Beach Dental. During the 60- to 90-minute Opalescence Boost treatment, patients recline in a turquoise-hued examination room as a tooth technician freshly mixes a batch of bleaching solution, ensuring maximum potency and freshness. The shining salve, which packs in potassium nitrate and fluoride for extra strength and cavity protection, is chemically activated, removing the need to spend time under lights or smiling awkwardly at the sun. While waiting for their appointments, patients can lounge on the earth-toned waiting room's leather couch and try to sway the chandelier's crimson gems by blowing really hard. Complimentary valet parking stables steely steeds during office hours.

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