Mar 18, 2016. There are 11 major organ systems in our body. This includes the circulatory, respiratory, digestive, excretory, nervous, and endocrine systems. As well as the immune, skeletal, reproductive, muscle and integumentary systems.
Dental crowns can be made up of all different sorts of materials -- porcelain or a combination of porcelain with metal. The type that's chosen not only depends on where the tooth is situated, but what the condition of the tooth is (how discolored it is and how decayed it is), as well as the condition of the gums.
A RealAge answered. Permanent crowns can be made of different materials. Some are made of ceramic compounds. Others are made of metal or a combination of metals that include gold alloy, palladium alloy, or nickel or chromium alloys. Other crowns are made from a combination of porcelain infused with metal. And some can be all ceramic. The strongest crowns are made ...