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.
Ground-level ozone, formed from pollutants emitted from cars, power plants, and other sources and a primary component of smog, poses considerable health risks. In 2014, California counties averaged 13 days with ozone concentrations above the U.S. regulatory standard, a decline from 33 in 2001.