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.
Other possible causes of receding gums include: 1  Poor oral hygiene. 2  Mouth trauma or injury could make the gums to recede. 3  Occlusion problems / Misaligned or crooked teeth. 4  Grinding or/and clenching teeth is also putting teeth under excessive pressure, sometimes resulting in gum recession.eceding Gums. Receding gums (or gingival recession, or gum recession) is called the condition when the gum tissue surrounding the teeth is lost or pulled away, exposing the roots of the teeth.