Dentists have safer filling alternatives for patients concerned about mercury toxicity.
According to the American Dental Association, amalgam fillings have been used in the dental industry for more than a century. Amalgam fillings are made of various elements, such as silver, tin, copper and mercury. Because of concern about mercury toxicity, advancements in dental technology now offer safer alternatives.
Composite Fillings
Composite fillings are a type of resin that contain glass or quartz. They are free of mercury and other metals, which makes them a safer alternative. When combined, the white composite fillings look like part of the tooth. Composites offer effective durability and resistance to fracture, however, they are subject to discoloration or staining over time.
Glass Ionomers
The American Dental Association identifies glass ionomers as another safe type of dental filling. Glass ionomers consist of materials created with a mixture of acids and fine-glass powders. Such fillings blend in naturally with the teeth. Ionomers are used for areas of the teeth that are not involved in a lot of chewing, because these fillings do not have a strong resistance to fracturing.
Resin Ionomers
Resin ionomers are like glass ionomers, but the glass powder is mixed with an acrylic resin rather than an organic acid. Resin ionomers release flouride into the tooth, which is beneficial for patients that are at high risk for tooth decay. These types of fillings do not contain mercury and are fabricated to look like a tooth in color and texture.
Porcelain Fillings
According to Mayoclinic.com, porcelain fillings (or ceramic fillings) are types of indirect restorative materials that are used to fill cavities.They also are beneficial for use as inlays, onlays, aesthetic veneers and crowns. The non-toxic porcelain fillings are desirable because of their natural appearance.
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