科研之友
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摘要
amalgam tattoos are common exogenous pigmented lesions of the oral mucosa occurring mainly by inadvertent placement of amalgam particles into soft tissues. the diagnosis of amalgam tattoo is simple, usually based on clinical findings associated with presence or history of amalgam fillings removal. intraoral x-rays may be helpful in detecting amalgam-related radiopacity. in cases where amalgam tattoo cannot be differentiated from other causes of oral pigmentation, a biopsy should be performed. this article deals with an extensive amalgam tattoo lesion which required a biopsy for a definitive diagnosis.
