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).
NOVEMBER 01, 2005. Aphthous stomatitis, or mouth ulcer, is a very common, often painful problem most people experience. Also known as canker sores, mouth ulcers are shallow sores found on the inner cheeks, lips, or gums. They often appear white, yellow, or red in color and may occur in clusters.