Foreign Body in the Oral Cavity Mimicking a Benign Connective Tissue Tumor
(a) 5 mm by 3 mm yellowish-white mass in the mucobuccal fold region of the lower right second premolar. A bluish-purple hyperpigmentation similar to the appearance of an amalgam tattoo is also noted on the alveolar process between the premolars. (b) Radiograph shows no radiopacity in the region of the premolars. The lingual tori can be seen as well-defined areas of radiopacity overlying the tooth roots of the molars.