I live in Mechanicsburg PA and Dr. William Spruill and Dr. Lillian Wong delivered the highest quality dental care while providing a comfortable family environment. [url=http://www.mechanicsburgpadentist.com]Dentist Mechanicsburg PA[/url] placed a whitening gel in a tray that fits over your teeth. As the active ingredient in the gel, carbamide peroxide, is broken down, oxygen enters the enamel and bleaches the colored substances. The structure of the tooth is not changed; only the tooth is made lighter and whiter. Fillings, Crowns, and Bonding will not lighten.
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