Industry News

Dental Groups Pledge Funds to Manchester Bombing Victims

Dental Groups Pledge Funds to Manchester Bombing Victims

26 May 2017

As dentists from across the United Kingdom attend the British Dental Conference and Exhibition, May...

eBooks

April 2017

Composite Vs. Porcelain’s:
What You Need To Know

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March 2017

Digital Marketing for Dentists

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February 2017

Traumatic Dental Injuries: Emergency Assessment And Treatment

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January 2017

Buffered Anesthesia: Efficiency & Profitability

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Recent Issues

May 2017

Solving Aesthetic Challenges From Trauma-Based Injuries




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April 2017

New Trends in Endodontics and Treatment Planning




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2017 CDA Show Highlights

The 7 periodontal items in the American Eagle Instruments (AEI)…
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Test for Measuring Mercury Levels may be Faulty

A test used to determine mercury exposure in dental amalgam fillings may not be so accurate.

The test may actually overestimate mercury levels of the toxic metal, according to a University of Michigan research team.

It’s accepted fact that dental amalgam fillings release levels of mercury into the mouth. The controversy, however, stems from the amount that’s released and if the exposure to the mercury poses major or even any health risks.

Previous public health studies have stated that the mercury in urine can be utilized to approximate one’s exposure to mercury from the amalgam fillings. These studies have also used mercury found in one’s hair to estimate the exposure to organic mercury based on a person’s eating habits.

But a University of Michigan study of 12 Michigan dentists differs from previous studies because it determined that the mercury levels actually came from two sources: consumption of fish containing organic mercury and there was inorganic mercury from the dentists’ own amalgam fillings.

This information is unique because for the first time there is the idea that mercury in urine stems from inhaled mercury vapor. In other words, for people that eat fish but aren’t exposed to mercury vapor at work, mercury concentrations in urine may overestimate exposure to mercury vapor from dental amalgam.

The study wanted to show that mercury isotopes can be more precise in determining human exposure to mercury when compared to conventional ways of measuring mercury levels, such as through urine and hair samples.

The discrepancy in this study and previous ones comes from the notion that urine contains a combination of inorganic mercury from dental amalgam and methylmercury from fish. This mix then undergoes a type of chemical breakdown in the body known as demethylation. This type of mercury comprises much of the inorganic mercury in the urine.

More than 2,000 tons of mercury is emitted through the air each year from human-generated sources. There can be debilitating effects on people, such central nervous system issues, heart issues and immune system issues.

The Wednesday Watch

Exclusive Interview: Dr. Thomas McClammy

Exclusive Interview: Dr. Thomas McClammy

24 May 2017

Dr. Tom McClammy speaks to us fresh from the stage after his GentleWave presentation at...

Technique of the Week

e-Prescribing with XLDent

e-Prescribing with XLDent

29 March 2017

Drs. David Andersen and Lora Nelson explain how easy e-Prescribing...

Technology Today

Show Me the Way

Show Me the Way

02 May 2017

This year’s International Dental Show did not disappoint: 155,000 participants from 157 countries attended,...

Implants Today

Narrow-Body  Dental Implants

Narrow-Body Dental Implants

02 May 2017

As the multibillion-dollar market for dental implants grows, many new companies are entering the...

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