The area’s leading provider of mercury-free dentistry, Damon R. Johnson, DDS Dental Excellence offers the most advanced dental fillings available. In today’s post, the OKC dentist outlines the differences between the three most common filling materials and explains why his office stays true to resin.

Composite resin

Resin fillings, according to OKC dentist Damon R. Johnson, DDS, offer the most value for your healthcare dollar. Composite resin is durable and resistant to fractures. Dr. Johnson says this is also the only type of filling material that looks natural and offers the patient a discreet solution to the often-painful problem of cavities.


Amalgam, often called “silver” filling material is an alloy made from mercury, tin, copper, and silver. The OKC dentist says amalgam is typically considered safe but sometimes poses a small threat of mercury leaching into the bloodstream. Mercury poisoning can result in muscle spasms and weakness, decreased cognitive function, and personality changes. Dr. Johnson recommends that old amalgam fillings be replaced with resin, especially if they are showing signs of wear.


Gold fillings are rare these days, says the OKC dentist, but may be offered in some offices for small fillings. Gold inlays are the most durable of the different filling materials but this strength is offset by high cost and inconvenience. Gold fillings must be crafted in a dental laboratory, meaning they cannot be placed in one visit but require multiple trips the dentist. Gold is also the most expensive and may not be covered by insurance.

Ultimately, Dr. Johnson says the best filling is no filling at all. The OKC dentist says most people can avoid them by caring for their teeth through daily brushing and flossing, visiting their dentist twice per year, and limiting exposure to cavity-causing substances.