MLD is usually caused by the lack of an important enzyme called arylsulfatase A. Because this enzyme is missing, chemicals called sulfatides build up in and damage the nervous system, kidneys, gallbladder, and other organs. In particular, the chemicals damage the protective sheaths that surround nerve cells.
What is a dental crown? The anatomy of a tooth can be divided into two basic parts -- the root and the crown. In a person with healthy gums and bone, the root of the tooth is covered by the gums and bone. The part of the tooth that is visible in the mouth, above the gum line on lower teeth and below the gum line on upper teeth, is called the clinical crown. A cemented restoration that partially or completely covers the outside of the clinical crown is referred to as a dental crown or cap.
Three-piece Crown Molding. Crown molding can be intimidating, because walls often aren't flat and nailing is difficult. This three-piece system solves those problems. In this article, we'll show you how to install trim on the walls and ceiling first, then add the crown.he built-up crown we chose for this project combines standard crown molding with two pieces of base trim. The result is a large, dramatic crown thatâs easier to install and less expensive than single-piece crown molding of similar size.