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Medical Definition of Bismuth line
1. A black zone on the free marginal gingiva, often the first sign of poisoning from prolonged parenteral administration of bismuth. (05 Mar 2000)
Lexicographical Neighbors of Bismuth Line
Other Resources:
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1. A black zone on the free marginal gingiva, often the first sign of poisoning from prolonged parenteral administration of bismuth. (05 Mar 2000)