Not the retainer you forgot in the middle school cafeteria.
Kristie Ceruti • January 14, 2015In past a retainer could be defined as a piece of plastic and metal custom-made for each individual [caption id="attachment_3124" align="alignleft" width="235"] Internal Tongue Drive System (iTDS) consists of a permanent magnet attached to the tongue, plus an array of magnetic sensors around the... CONTINUE READING
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