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 Composite veneers can be built up directly in your mouth, with the veneers able to be bonded and moulded to the front of your teeth in a single dentist visit. 2  This type of veneer can offer an equal standard of improvement to appearance like that of porcelain.