What harm does filling teeth often do to human body? Great gods, help!

Have you seen a dentist in the hospital? How many "black" teeth are there in the mouth? Or face a choice: is the material used for filling teeth cheap amalgam or beautiful and expensive composite resin? Are you worried that amalgam will do harm to your health? First, let's look at what amalgam is. As a restorative material, amalgam has been used in dentistry for more than 150 years, and it is still the most commonly used material to restore dental caries in the world. Amalgam is mainly composed of silver, tin, copper and mercury. As a dental restoration material, it has the advantages of firmness, wear resistance, simple and time-saving operation, low price and good quality; The disadvantage is that more tooth tissue needs to be polished to facilitate retention. The color is silver, and it is black after oxidation, which is unsightly. As we all know, elemental mercury is a toxic waste in the environment. Because amalgam contains mercury, more and more people begin to pay attention to the safety of amalgam. How to treat amalgam filling correctly? First, let's look at the physical way that mercury enters the human body. Elemental mercury is rich in the earth's environment and exists in soil, ocean and air. The burning of oil and even the eruption of volcano will cause the widespread diffusion of mercury. Dental amalgam fillings contain 40%-50% mercury and elements such as silver, tin and copper. Mercury is not in a natural state in the metal mixture formed by their mixing. A small amount of mercury on the surface will evaporate into the air and be exhaled. Most mercury inhaled into human body will be excreted from urine through kidneys, and a small amount will be deposited in other organs, such as brain, lung, liver and gastrointestinal tract. The most important question is: What proportion of dental amalgam is in all sources of mercury? It is reported that the daily mercury intake caused by dental amalgam is only 1/7( 14%) of the weekly seafood intake. The daily mercury intake of 8- 12 amalgam filling surface is about 1-2, which is 7 times lower than the intake of seafood once a week, but only 10%-20% of the environmental mercury intake. A recent study on the relationship between aging and diseases was conducted among a group of Roman Catholic nuns aged 75- 102. There is no evidence that amalgam will reduce the recognition function. Repeated studies have also shown that there is no difference between any organ system of human body with or without amalgam fillings, and the comparison of immune cells also shows that there is no difference in function. Based on the above research, many health organizations in the world have reviewed and concluded that there is no epidemiological relationship between amalgam and general health problems. The World Health Organization, Swiss Medical Research Institute, Swiss National Health and Welfare Committee, British Dental Association, US Department of Health Services, International Institute of Hygiene and Dentistry, US Food and Drug Administration and even consumer reports have proved that dental amalgam fillings are safe to use, and taking out existing filling materials is not very beneficial to health. Some organizations and the National Multiple Sclerosis Association pointed out that those claims that amalgam fillings can restore health are unproven, unscientific and a "cruel prank". There is no denying that there is an allergic reaction to mercury in the population, and the research shows that 3% people respond to the 1% mercury patch test. In this 3% population, less than 0.6% people have allergic reactions, so it is rare to have allergic reactions to toxic mercury. ADA (American Dental Association) code of professional ethics stipulates that it is inappropriate and immoral to say that taking amalgam out of non-allergic teeth means taking out toxic substances from the body when filling teeth with amalgam on the recommendation or suggestion of dentists. If allergies are related to amalgam fillings, dentists should remove amalgam. From an ethical point of view, if there is no reasonable medical reason, the dentist can refuse to take out the alloy. Of course, amalgam can be excluded at the request of patients, even if the inference that alloy can improve health is not ruled out. Mercury used in production has caused most mercury pollution in the environment for centuries. High doses of mercury are neurotoxic. Obviously, comprehensive measures must be taken to reduce mercury pollution in the environment. Sweden and Germany have banned the production of dental amalgam, which partially solved the problem of mercury pollution in the environment. With the appearance of new amalgam replacement materials which are durable, easy to operate and reasonable in price, it will be possible to gradually stop using mercury-containing repair materials. Prior to this, most medical and dental societies and scientific groups of the World Health Organization believed that amalgam was a safe, wear-resistant and reasonably priced restorative material.

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