Dr. Piyakul Oparkcharoen, a dentist from Melbourne, explained what causes stained and yellow teeth and how to make them whiter.
Image: AAP
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How to keep your teeth pearly white?
Dr. Piyakul Oparkcharoen, a dentist from Melbourne, explained what causes stained and yellow teeth and how to make them whiter.
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By Parisuth Sodsai
Source: SBS
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