Introduction The aim of this essay is to inform the population of the benefits of amalgam over composite restorations. There are two trains of thought, longevity and strength of amalgam versus the esthetically pleasing appearance of composites. Though much of the general population support composite restorations, this appearance can come at a higher cost. Furthermore, majority of people tend to go with the recommendation given from their dentist on which restoration should be placed, as they are uneducated of the differences between the two. The following information will discuss the pros and cons of both amalgam and composite restorations.
Survival of Composite
In the research conducted by N.J.M Opdam, E.M. Bronkhorst, B.A.C. Loomans, and…show more content… Tooth position in the dental arch has been suggested to have an influence on restoration longevity, therefore fractures may occur leading to hypersensitivity stimuli. Amalgam restorations have been used for hundreds of years “Silver paste is first mentioned by the Chinese in 659 C.E.; shavings from silver cut from coins were mixed with enough mercury for a sloppy paste”. A large study conducted by the Washington Dental Service from 1993-2000, evaluated over 200,000 posterior restorations in adults for fractures and microleakage leading to secondary caries. The results displayed amalgam restoration longevity of 2 – 3 surface restorations lasting up to a duration of 4½ years. Whereas, 2-3 surface composite restorations had a longevity of 2½ years (Ulla, Anna, Kimmo & Miira, 2017). The study also found that secondary caries occurred more often in composite restorations than amalgam, due to leakage at the margins. Microleakage occurs more often in composite restorations because of shrinkage, polymerization, water sorption and they are at a higher risk for fracture from occlusal forces. (Hatrick & Eakle, Dental Materials, 2016) Amalgam restorations are a mixture of mostly mercury, silver and tin, which makes it stronger to endure compressive, shearing and tensile forces. If a restoration is to be placed at the distal-buccal cusp, an amalgam restoration would be the better choice as they can withstand occlusal forces for longer periods of time and adhere better to the tooth surfaces. The number one concern for amalgams when dealing with the general population, tends to be the risk of toxicity due to
