A 32-year-old member asked:
tooth bleaching question ---why does it cause sharp stabbling nerve pain?
3 doctor answers
Dr. Ronald Achong answered
17 years experience Oral and Maxillofacial Surgery
Possible cavity?: Sometimes patients will have sensitivity to the bleaching gel itself. But a sharp stabbing may be a sign of a tooth cavity, gum disease or a defective filling/crown. Consult your dentist.
Answered on Nov 6, 2012
Dr. Simon Rosenberg answered
45 years experience Dentistry
A Crack/Root Exposed: There has to be a connection between the nerve tissue and the tooth surface where the bleaching gel is placed. When the peroxide hits the tissue it breaks down to water and oxygen and it is the pressure on the nerve from the gas release that causes the sharp pain. There are desensitizing gels and toothpastes you can use to seal the communications and bleach more slowly.
Answered on Oct 3, 2016
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