The Ideal Dental Material Essay

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1. Amalgam ( silver fillings) is produced by mixing mercury along with silver, tin, copper, and zinc. Even though mercury is a toxic material when bounded to other metals it becomes stable and thus can be used in dental applications. The addition of Silver provides strength, Tin for workability, Copper for corrosion resistance and Zinc to prevent oxidation. One of the advantages of using silver fillings as a dental material is its durability. These fillings are able to last 10-15 years, which usually is much longer than other types of tooth fillings. The strength of this filling is strong enough to resist wear due to chewing forces. This is especially seen when the filling has good bulk strength. However it could be easily chipped on the…show more content…
These fillings take longer to be applied when compared to amalgams. Finally the composite materials can chip from the tooth depending on where it is placed. The ideal dental material will have to be stable enough to be used inside the mouth with out having any toxic affect. It must resist the pressure of occulusal forcers and have both aesthetic and functional qualities. You must also take into consideration the area of the damaged tooth, as well as the teeth directly surrounding the area. As stated above it is important for the dental material to resist the different forces found in the oral environment. When choosing dental materials it is important to look for the following properties. When a force is applied on a body it results in a reaction of equal force in the opposite direction. This is known as internal tension. This can be used to measure stress. Depending on how much stress is applied and the way that it is applied the material will act differently. For example the stress may cause a deformity in the shape of the body defined as strain. Therefore the stress strain relationship of dental materials should be observed (hooks law). The proportional limit, is the maximum stress a material is able to withstand without having permanent deformities. Therefore this point measures the elasticity of the material along with it strengths. An ideal dental material will have a high proportional
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