the guy who co-made that video is a friend of mine.  so, i am going to email him and ask him about this.  when he responds, i will post it.  i previously asked him to write a rebuttal when another dr accused it of being fake.  he got together with collegues to write it and i posted it here:  http://aharleygyrl.livejournal.com/725.html

Torrie

UV Light ANSWER "Smoking Teeth" Video, Produced by David Kennedy, DDS, former IAOMT President

Dear Torrie,
 

UV light doesn’t excite mercury unless it is close enough to heat the filling which is not the case. The full explanation of the laws of physics involved are on my blog at www.iaomt.blogspot.com

A running commentary re the same issues by the uninformed is below the YouTube in excruciating detail. I also posted a video response where the mercury is measured using a Jerome mercury sniffer. It does not measure water so Laidler’s earlier argument about seeing water vapor is totally debunked as well.  …[I] suggest you…refer them to these two web sites if they are interested in the evidence. As for the amalgam disappearing that is…[untrue]as well.

An average amalgam according to Robert Craig’s dental materials text book contains about 750 milligrams of mercury. The last report I saw the average person has 12 of these fillings. The EPA’s maximum daily dose of mercury from sources other than air is 10 micrograms. Now for the tough math part. 1 milligram = 1000 micrograms so 750 mg = 750,000 micrograms. Times 12 fillings = 9 million micrograms or 9,000,000. Now dividing 9 M by 10 and get 900,000 divided by the number of days in a year (365) and get 2465.7 years. Therefore, if one received the EPA maximum daily dose of mercury from sources other than air totally from amalgam every day you have enough mercury in 12 fillings to supply that dose to about 458 years before Christ was born.

On the other hand when old filling are measured they contain about 25% mercury at the end of their useful life. They began life with 50% mercury so where did all that mercury go? Doing he same math equation this time and instead of using the supposedly safe dose we will now use the demonstrated loss of mercury from fillings.

Half the mercury in 12 fillings is approximately 9,000,000 / 2 = 4,500,000. If the filling lasted say 20 years which is a generous projection then the loss of mercury from the filling is on the order of 616 micrograms per day.
Equation: 20 years X 365 days = 7300. 9M / 7300 = 616.

Dr. [Boyd] Haley has been measuring the amount of mercury released from  #100 1 spill amalgam made up by 10 different dentists stored under water with no agitation daily. His laboratory measurements have found substantial amounts of mercury ranging from a low of 15 micrograms to a high of around 150 per small filling in room temperature water with no stimulation per day. Therefore it is likely that under more realistic situations as in the human mouth where temperatures are higher and chewing takes place the amount of mercury released is considerably greater.

...The fact that these kinds of numbers can and have been measured is what scientific evidence is all about.  ….  A scientist puts it on a scale and measures it. Mercury released from amalgam has been measured in a number of experiments dating back over a century. They argue about methodology and speculate about this and that because they have no evidence or measurements that contradict these findings.  ….