fireÂ·bomb (fÄ«râ²bÅmâ²) n. A bomb used to start a fire; an incendiary bomb. v. fireÂ·bombed, fireÂ·bombÂ·ing, fireÂ·bombs v.tr. To attack (a target) with a firebomb. v.intr. To launch an attack against a target, using a firebomb. fireâ²bombâ²er n. firebomb (ËfaÉªÉËbÉm) n (Firearms, Gunnery, Ordnance & Artillery) another name for incendiary 6. vb (tr) to attack with incendiary bombs. ËfireËbomber n. fireâ¢bomb (ËfaÉª É rËbÉm) n. 1. an explosive device with incendiary effects. v.t. 2.
Gum discoloration of this type is called an amalgam tattoo, which is caused when tiny pieces from a filling or cap wedge themselves into the gums. This issue often looks like a blue or black tattoo in the mouth, and it too is harmless. Smoking, certain medications such as minocycline, antimalarial agents, or tricyclic antidepressants, or metal-based crowns or fillings may also cause gum discoloration.
So if you happen to notice that your gums have turned black, grey, or white, you may be quite concerned. While some gum discoloration is a natural occurrence, other discoloration can be hazardous to your health and require serious attention. Here are the main causes of and reasons for gum discoloration.