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).
This is Richard Allen at the University of Iowa. This video demonstrates the harvesting of a full-thickness skin graft from a retroauricular site. A templateâ¦ This is Richard Allen at the University of Iowa. This video demonstrates the harvesting of a full-thickness skin graft from a retroauricular site. A template has been made of the eyelid defect with a clear drape. The template is then transferred to the area behind the left ear. The edges of the template have been marked with a marking pen.