Note: Chlorhexidine may cause staining of the tooth, tooth filling, and dentures or other mouth appliances. Tetracycline use during tooth development phases (from the last half of pregnancy through eight years of age) may cause permanent discoloration (yellow, gray, brown) of teeth.
What is Coal made of? Coal is made from trees or plants that decayed on the ground for millions of years. The remains of various plants and trees then mixed with the other components of the ground and eventually going through several natural processes making them more like solid rocks.
The coal tars used are products of the destructive distillation of chosen grades of coal having low ash and good coking quality which produces a selective low carbon tar.Coal tar is the primary condensation product resulting from the carbonization of coal for making coke or gas; the tar is produced as a by-product.one Star coal tar coatings are products of carefully chosen coal tars having low carbon values, carefully blended with mineral fillers, carbon plasticizers and selected grades of heavy oils and solvents distilled from coal tar.