It stings skin and turns it bright white for a day. After that, the skin is
normal again. Experienced it plenty of times. Same thing for gingiva.

Signature
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Stephen [What's a Temporary?], D.D.S.
Michigan, USA
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This posting is intended for informational or conversational purposes only.
Always seek the opinion of a licensed dental professional before acting on
the advice or opinion expressed here. Only a dentist who has examined you
in person can diagnose your problems and make decisions which will affect
your health.
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