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).
There are 3 types of dental abscess: 1  Gingival abscess-the abscess is only in the gum tissue and does not affect the tooth or the periodontal ligament. 2  Periodontal abscess-this abscess starts in the supporting bone tissue structures of the teeth.