| Literature DB >> 270488 |
J S Reid, J A Beeley, D G MacDonald.
Abstract
An investigation has been carried out into the nature of the black pigment in black extrinsic tooth stain. The results suggest that the black material is a ferric salt, probably ferric sulfide, formed by the reaction between hydrogen sulfide produced by bacterial action and iron in the saliva or gingival exudate.Entities:
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Year: 1977 PMID： 270488 DOI： 10.1177/00220345770560081001
Source DB: PubMed Journal: J Dent Res ISSN： 0022-0345 Impact factor: 6.116