Over-eager brushing, dental work, biting your cheek or tongue, or sporting accidents are all possible causes. Food sensitivities: For obvious reasons, the surface of your mouth reacts to the food you eat.
Mechanical room in a large office building. A mechanical room or a boiler room is a room or space in a building dedicated to the mechanical equipment and its associated electrical equipment, as opposed to rooms intended for human occupancy or storage.odern buildings use control systems to manage HVAC cycles, lighting, communications, and life safety equipment. Often, the control system hardware is located in the mechanical room and monitored or accessed remotely.
1 Therapeutic material that is not absorbed by, eliminated by, or incorporated into a body part - such as a radioactive implant, or orthopedic pins.  Mechanical or electronic appliances used to assist, monitor, take the place of, or prevent a physiological function - such as a pacemaker or hearing aid.