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Dental Health (Expert Forum)
crown issue
Answered by
Jerome Bogin, D.D.S. - Dental
Questions in the Dental Health forum are answered by Dr. Jerome Tsang and Dr. Jerome Bogin. Topics covered include bridges, cavities, crowns, and x-rays.
crown issue
by tdppp, Aug 07, 2006 12:00AM
Six months to a year ago I had a root canal and a full crown set on what was left of a tooth. I have now noticed a a black line that is running around the bottom of the crown between the crown and the gum. The bottom of the crown never went into the gum and it still doesn't.
What is this black line from? (there is not pain).
What is this black line from? (there is not pain).
Doctor's Answer
by Jerome Bogin, D.D.S. , Aug 07, 2006 12:00AM
, Aug 07, 2006 12:00AM
The black line is probably the metal collar that is left just short of where the porcelain meets the metal on a porcelain to metal crown. There is nothing wrong with that as long as there is no decay. The tooth is without a nerve so that you would not be able to sense any decay so I would have it checked out by your dentist.
