Evidently, the FDA finds it of little consequence for humans to have mercury in their mouths, continuously exposed to acidic saliva, than the EPA considers those curvy little Compact Fluorescent Light bulbs that contain mercury…read on and draw your own conclusions:

FDA NEWS RELEASE

For Immediate Release: July 28, 2009

Media Inquiries: Peper Long, 301-796-4671, mary.long@fda.hhs.gov
Consumer Inquiries: 888-INFO-FDA

FDA Issues Final Regulation on Dental Amalgam

The U.S. Food and Drug Administration today issued a final regulation classifying dental amalgam and its component parts – elemental mercury and a powder alloy—used in dental fillings. While elemental mercury has been associated with adverse health effects at high exposures, the levels released by dental amalgam fillings are not high enough to cause harm in patients.

The regulation classifies dental amalgam into Class II (moderate risk). By classifying a device into Class II, the FDA can impose special controls (in addition to general controls such as good manufacturing practices that apply to all medical devices regardless of risk) to provide reasonable assurance of the safety and effectiveness of the device.

The special controls that the FDA is imposing on dental amalgam are contained in a guidance document that contains, among other things, recommendations on performance testing, device composition, and labeling statements.

Specifically, the FDA recommended that the product labeling include:

A warning against the use of dental amalgam in patients with mercury allergy;

A warning that dental professionals use adequate ventilation when handling dental amalgam;

A statement discussing the scientific evidence on the benefits and risk of dental amalgam, including the risks of inhaled mercury vapor. The statement will help dentists and patients make informed decisions about the use of dental amalgam.

Dental amalgam is a "pre-amendment device," which means that it was in use prior to May 28, 1976, when the FDA was given broad authority to regulate medical devices. That law required the FDA to issue regulations classifying pre-amendment devices according to their risk into class I, II, or III. Although the FDA previously had classified the two separate parts of amalgam – elemental mercury and the metal powder alloy – it had not issued a separate regulation classifying the combination of the two, dental amalgam. During this time, however, dental amalgam has been subject to all applicable provisions of the law.

Today's regulation also reclassifies the mercury component of dental amalgam from Class I (low risk) to Class II (moderate risk). 

Over the past six years, the FDA has taken several steps to assure that the classification of dental amalgam is supported by strong science.

In 2002, the agency issued a proposed rule to classify dental amalgam and identify any special controls necessary for its safe and effective use.

Due to a high number of comments on that rule, the agency held an advisory committee meeting in 2006, inviting dental and neurology experts to review existing scientific data on dental amalgam, especially with regard to its toxicity in pregnant women and children.

The agency drafted a review of recent and relevant peer-reviewed scientific literature on exposure to dental amalgam mercury. The advisory committee asked that the agency conduct an even deeper review of the scientific literature on this topic. In all, the agency considered some 200 scientific studies.

On April 28, 2008, the FDA reopened the comment period on the 2002 proposed classification in order to elicit the most up-to-date comments and information related to classification of dental amalgam. Today's rule reflects the years of agency review on this topic.

FDA's Web site on dental amalgam:
http://www.fda.gov/MedicalDevices/ProductsandMedicalProcedures/DentalProducts/DentalAmalgam/default.htm

SO WHAT ABOUT THOSE CFL (compact fluorescent light) BULBS THAT CONTAIN MERCURY?

EPA'S Web site on Compact Fluorescent Light Bulbs

http://www.epa.gov/waste/hazard/wastetypes/universal/lamps/faqs.htm

Compact fluorescent light bulbs (CFLs) are an energy efficient and cost effective lighting alternative to regular incandescent light bulbs. A compact fluorescent light bulb fits in a regular light bulb socket or can be plugged into a small lighting fixture. CFLs are typically used in homes and are increasingly used by businesses. They use 75% less energy than incandescent light bulbs and last up to 10 times longer. Every CFL can keep more than 400 pounds of greenhouse gas emissions out of the atmosphere. In most states, households are not required to manage their CFLs as a hazardous waste after they burn out. However, EPA encourages the recycling of all CFLs when they are ready to be discarded. Household hazardous waste collections usually accept these light bulbs. Find out what CFL collection and recycling programs are available in your area by visiting epa.gov/bulbrecycling or Earth911.

The amount of mercury in a CFL or other fluorescent light bulb typically ranges between 3.5 milligrams to 15 milligrams. The amount of mercury varies depending on the type of fluorescent light bulb, the company that makes the light bulb, and when the fluorescent light bulb was made.  Although companies have greatly reduced the amount of mercury used in light bulbs over the past 20 years, they are not yet able to completely eliminate the need for mercury. The amount of mercury in a single fluorescent light bulb is small. However, collectively, large numbers of fluorescent light bulbs contribute to the amount of mercury that is released into the environment. EPA encourages the recycling of all mercury-containing light bulbs.

No mercury is released when the bulbs are intact or in use; exposure is possible only when a bulb has been broken.

Fluorescent light bulbs contain a very small amount of mercury sealed within the glass tubing. EPA recommends the following clean-up and disposal below.

Before Clean-up: Air Out the Room

Have people and pets leave the room, and don't let anyone walk through the breakage area on their way out.

Open a window and leave the room for 15 minutes or more.

Shut off the central forced-air heating/air conditioning system, if you have one.

Clean-Up Steps for Hard Surfaces

Carefully scoop up glass pieces and powder using stiff paper or cardboard and place them in a glass jar with metal lid (such as a canning jar) or in a sealed plastic bag.

Use sticky tape, such as duct tape, to pick up any remaining small glass fragments and powder.

Wipe the area clean with damp paper towels or disposable wet wipes. Place towels in the glass jar or plastic bag.

Do not use a vacuum or broom to clean up the broken bulb on hard surfaces.

Clean-up Steps for Carpeting or Rug

Carefully pick up glass fragments and place them in a glass jar with metal lid (such as a canning jar) or in a sealed plastic bag.

Use sticky tape, such as duct tape, to pick up any remaining small glass fragments and powder.

If vacuuming is needed after all visible materials are removed, vacuum the area where the bulb was broken.

Remove the vacuum bag (or empty and wipe the canister), and put the bag or vacuum debris in a sealed plastic bag.

Clean-up Steps for Clothing, Bedding and Other Soft Materials

If clothing or bedding materials come in direct contact with broken glass or mercury-containing powder from inside the bulb that may stick to the fabric, the clothing or bedding should be thrown away. Do not wash such clothing or bedding because mercury fragments in the clothing may contaminate the machine and/or pollute sewage.

You can, however, wash clothing or other materials that have been exposed to the mercury vapor from a broken CFL, such as the clothing you are wearing when you cleaned up the broken CFL, as long as that clothing has not come into direct contact with the materials from the broken bulb.

If shoes come into direct contact with broken glass or mercury-containing powder from the bulb, wipe them off with damp paper towels or disposable wet wipes. Place the towels or wipes in a glass jar or plastic bag for disposal.

Disposal of Clean-up Materials

Immediately place all clean-up materials outdoors in a trash container or protected area for the next normal trash pickup.

Wash your hands after disposing of the jars or plastic bags containing clean-up materials.

Check with your local or state government about disposal requirements in your specific area. Some states do not allow such trash disposal. Instead, they require that broken and unbroken mercury-containing bulbs be taken to a local recycling center.

Future Cleaning of Carpeting or Rug: Air Out the Room During and After Vacuuming

The next several times you vacuum, shut off the central forced-air heating/air conditioning system and open a window before vacuuming.

Keep the central heating/air conditioning system shut off and the window open for at least 15 minutes after vacuuming is completed.

http://www.epa.gov/mercury/spills/index.htm#fluorescent

or call 1-800-438-2474