When only part of the tooth has erupted into the mouth, it can create a flap of gum tissue that easily holds food particles and debris and is a hotbed for bacteria. Pericoronitis also can occur around a wisdom tooth that has not erupted at all and is still under the gums.
Define futon: a usually cotton-filled mattress used on the floor or in a frame as a bed, couch, or chair a usually cotton-filled mattress used on the floor or in a frame as a bed, couch, or chairâ¦ See the full definition
Fumed silica, also known as pyrogenic silica, is a non-crystalline, fine-grain, low density and high surface area silica. Not to be confused with silica fume, also known as microsilica. The production of precipitated silica starts with the reaction of an alkaline silicate solution with a mineral acid.