Periodontal treatment is the specialist cleaning of your teeth and gums to help control the bacteria that cause gum disease. Gum disease is caused by the germs (bacteria) which live in your mouth. The bacteria stick to your teeth, irritate the gums and make them bleed.
(Redirected from Ground effect in aircraft) In fixed-wing aircraft, ground effect is the increased lift (force) and decreased aerodynamic drag that an aircraft's wings generate when they are close to a fixed surface. When landing, ground effect can give the pilot the feeling that the aircraft is floating.
Answer Wiki. Ground effect is the increased lift generated by wings when the aircraft is close to the ground. Normally, some of the high-pressure air beneath the wing wraps around to the low-pressure top of the wing. This destroys some of the lift the wing generates, and is an accepted inefficiency of wing design.