Amalgam Tattoo
A benign, grey-blue mucosal pigmentation caused by the inadvertent implantation of amalgam particles into oral soft tissues during dental procedures.
Full Definition
An amalgam tattoo is the most common exogenous pigmented lesion of the oral mucosa, arising when amalgam particles are embedded in gingival or alveolar tissues—typically during tooth extraction, cavity preparation, or root-end surgery. Clinically it presents as a flat, irregular, grey, blue, or black macule that does not blanch under pressure. It is asymptomatic and benign, requiring no treatment, but editors must distinguish it from melanocytic lesions. Radiographs may reveal radiopaque particles confirming the diagnosis. The term is not hyphenated in current clinical usage despite its compound-adjective form.
Usage
Usage note: Do not hyphenate. Not to be confused with decorative oral tattooing. Distinguish carefully from melanocytic and vascular pigmentations in differential diagnosis sections.
In Context
- "The case report described a grey-blue amalgam tattoo on the attached gingiva adjacent to a heavily restored molar." — Case report
- "Editors should note that 'amalgam tattoo' is written as two words without a hyphen in standard oral medicine texts." — Style guide note