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.
Ground-Level Ozone (O 3). Ground-level ozone is a colorless and highly irritating gas that forms just above the earth's surface.It is called a secondary pollutant because it is produced when two primary pollutants react in sunlight and stagnant air.round-Level Ozone (O 3). Ground-level ozone is a colorless and highly irritating gas that forms just above the earth's surface.
It's a seeming paradox, but not a real one. When it comes to ozone the where makes the difference. Near the ground, ozone is an air pollutant from man-made emissions. Ten to 30 miles overhead, ozone forms a protective layer that filters dangerous ultraviolet radiation from sunlight.hen it comes to ozone the where makes the difference. Near the ground, ozone is an air pollutant from man-made emissions. Ten to 30 miles overhead, ozone forms a protective layer that filters dangerous ultraviolet radiation from sunlight.