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.
Dental crowns are coverings applied over the tooths surface, and may be made of ceramic, porcelain, porcelain fused to metal (PFM), resin, or metal, including gold. Dental crowns are also useful in patients who grind their teeth or have bite problems, addressing the stressed area and stabilizing it to prevent damage.