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A member asked:

Is there any difference when a cheek/lip retractor is used instead of a tray?

A doctor has provided 1 answer

Yes: Retractors are use when an in office bleaching is perform with a light source or a gel placed without trays, we use the retractors to keep the tissues away from the gel to avoid burns or bleaching of the tissue.

Dr Sparacino agreed

Answered 1/31/2013

5.3k views

Thank

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1 month old head circumference percentile went from 70th to 90th in 2 weeks. Doctor says his head feels normal & looks normal so most likely it could be measurement differences since it was measured by 2 different people. Is this normal or worrying?

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