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Whitening Trays

Over-the-counter versions ($45 to $75 for a two-week supply) lighten teeth only a shade or two; home-whitening trays custom-fit by your dentist ($300 to $800) give more dramatic results.

You can also get whitening done in-office for $500 to $1,000; it's no better than using custom trays, but takes under two hours.

(Getty Images)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.

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