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).
1 Bone grafting. 2  This procedure is performed when periodontitis has destroyed the bone surrounding your tooth root. 3  The graft may be composed of small fragments of your own bone, or the bone may be synthetic or donated. 4  The bone graft helps prevent tooth loss by holding your tooth in place.