Metal Fillings and Mercury

One of the most controversial topics in dentistry today is the use of mercury in dental materials. Metal fillings, known as amalgams, utilize the low melting point of mercury to create a metal substance that starts out moldable and solidifies to make a strong restoration. Knowing that mercury has harmful properties, why does the dental profession still utilize this material? We wanted to take a moment to explain how (and why) mercury is still used as a safe and predictable dental treatment. 

For starters, our office currently does not place amalgam fillings. This is not due to mercury toxicity or metal content, but rather that tooth colored fillings can now offer similar structural properties as amalgams, but with much better esthetics. All things equal, most patients would prefer a natural looking restoration over a metallic alternative. Still, many dental practices still place amalgams. The metal fillings are occasionally preferred over tooth colored materials due to location, size and user choice. Our office has a number of materials and technologies (such as the sonicfil system) that allows us to place tooth colored restorations with great predictability in a number of scenarios.

An important point in understanding mercury toxicity is acknowledging the different ways that mercury exists in our environment. Elemental mercury can be found in older thermometers, blood pressure cuffs and certain types of lightbulbs. While it is a toxic substance, it does not “stay” in our system; after exposure the harmful vapors are processed and released. This is contrasted to organic mercury (methylmercury, organomercury, etc.). Organic mercury “builds up” in ecosystems and causes health concerns associated with eating large fish, sushi and other seafood. Our bodies have a hard time clearing this compound, which can eventually lead to conditions such as mercury poisoning. 

The mercury found in amalgam fillings is unique, as it is “locked in" with other metals in an alloy. Extensive research has shown that properly maintained metal fillings leach little to no mercury into the body. In other words, while there may be mercury present in your fillings, it is largely shielded from causing any effects or systemic health issues.

The only real concerns with mercury in amalgam fillings are during placement and removal. These are the only occasions when the mercury is aerosolized or free to release vapor. However, dentists are very aware of this, and take many precautions to eliminate any potential harm. For example, our office uses two forms of isolation/suction when removing amalgam fillings, as to maximize the speed at which the vapors are evacuated.

Please do not heed the advice of television medical personalities who proclaim the many “evils” of amalgam. It is a strong, safe and effective dental filling material. Our office only removes dental amalgam due to patient preference or recurrent decay. We never recommend removing sound amalgam fillings due to mercury concerns. If you would like to know more about the mercury content in amalgam fillings, our office’s policies or why we place fillings, please give us a call. We want you to be confident and satisfied with all aspects of your dental treatment!

Dentistry in the News- Oil Pulling

If you turn on the news tonight, chances are you will see at least one article on harmful food additives, dangerous diets or other health scares. With so many alarming stories on the average american diet and wellness, many of our patients are trying alternative and holistic medical solutions. Today, we would like to cover one of these treatments that directly relates to dentistry and dental science; Oil Pulling. 

Oil Pulling is an ancient South-Asian practice of swishing or holding oil in the mouth. It arises from traditional Hindu medicine and is said to have incredible benefits for the entire body. In modern times, oil pulling is thought to aid in eliminating bacteria from the teeth and gums. The practice has been popularized by TV shows such as Dr. Oz and holistic medicine websites and blogs. Some believe that the oil can emulsify and trap bacteria, allowing it to be removed as the oil is expelled. Others argue that the action of swishing oil can push bacteria out of the gum tissue and hard to reach areas. No matter what proposed mechanism, the promise is a healthier mouth with lower bacterial counts.

The American Dental Association’s stance on oil pulling is that there isn’t enough conclusive scientific evidence to recommend it as a treatment for any oral condition. With papers suggesting both benefits and drawbacks, it is hard to reach a hard decision on if, how or why oil pulling works. At Thousand Oaks Family Dentistry, we feel that while oil pulling may not have any concrete medicinal benefits, there is relatively little harm in it’s practice. If you believe it can make your mouth healthier and cleaner, then feel free to try oil pulling. Our only advice is to use a quality (cold pressed) oil and to discard the oil into your trash (it can quickly harden and clog up bathroom sinks). Additionally, make sure you rinsing thoroughly after each pulling session and do not let the oil sit on your teeth for extended periods.

In short, we recognize oil pulling as a treatment many of our patients are utilizing. While you may see some health benefits, we want you to realize that there is no substitution for brushing twice a day, flossing and receiving regular dental cleanings. We know of no way to better maximize your oral health and minimize chances for disease and decay. As with any habit, if you notice oil pulling is having negative effects, stop treatment immediately. We want all of our patients to be happy and healthy. If you feel oil pulling can help get you reach that state, then feel free to add it to your existing home care regimen in a safe and controlled manner!