While lichen planus very rarely leads to oral cancer, irritation of lichen planus by tobacco and alcohol, poorly fitting dentures, and poor oral hygiene can turn lichen planus into the erosive type.
In economics, a deadweight loss (also known as excess burden or allocative inefficiency) is a loss of economic efficiency that can occur when equilibrium for a good or service is not achieved or is not achievable.he deadweight loss is the area of the triangle formed by the grey tax income box (to the right of it), the original supply curve, and the demand curve.
Deadweight Loss = .5 * ($2 - $1.50) * (7000 - 5000) Deadweight Loss = .5 * $.50 * 2000 . Deadweight Loss = $500 . Lesson Summary. Deadweight loss is defined as the loss to society that is caused by price controls and taxes. These cause deadweight loss by altering the supply and demand of a good through price manipulation.