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.
Different types of dentures may be made of slightly different materials. In general, dentures are made of acrylic resin and metal. The base of partial dentures is often made of metal covered in plastic, and teeth are made of plastic. Metal is generally used as the underlying structural base for partial dentures.