An air pollutant is a substance in the air that can have adverse effects on humans and the ecosystem. The substance can be solid particles, liquid droplets, or gases. A pollutant can be of natural origin or man-made. Pollutants are classified as primary or secondary.
How is gum graft surgery performed? During gum grafting surgery, a periodontist will commonly take connective tissue from the roof of the mouth (palate) and suture it to the affected gumline. This allows more tissue to grow and close the exposed root surface (gum recession).
When gum recession is severe, a gum graft may be needed to protect the roots of the teeth from exposure. During a gum graft, an oral surgeon moves existing gum tissue over the tooth or uses gum tissue from another part of your mouth or from a donor to cover the tooth.