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What are the parts of a Seton implant?
the tubing protrudes through the anterior (front) or less commonly, the posterior (rear), chamber of the eye. An attached reservoir, called a plate, is placed under the conjunctiva of the eye
What happens when a iron nail is put in mercury?
When an iron nail is placed in mercury, a reaction called amalgamation occurs. The iron atoms from the nail react with the mercury atoms, forming an alloy called an amalgam. The iron nail gets coated with a layer of amalgam, which can make the nail appear silver-like and can change its properties.
Location of the para thyroid gland?
Two pairs of parathyroid glands are placed on the posterior surface of the thyroid gland. They are of very small size as compared to the thyroid gland.
Does the anterior part of cornea act as contact lens?
No, the anterior part of the cornea does not function as a contact lens. The cornea is the clear, dome-shaped front part of the eye that helps to focus light onto the retina. Contact lenses are external devices that are placed directly onto the cornea to correct vision or change its appearance.
What would be the receptor and coordinator and effector if you step on a pin?
If you step on a pin, pain sensation goes along the sensory nerve. It's nucleus is placed in dorsal nerve root. Then the nerve fibre enters the posterior horn of spinal cord. From here you have second neuron going to anterior horn cell. Another going to higher centers. Third neuron goes to muscle. It is known as motor neuron. Together it forms a reflex arc. The leg is withdrawn immediately, before you know about pin prick.
Who invented amalgam fillings?
In 1833 the Crawcour brothers, two Frenchmen, brought amalgam to the United States, and in 1844 it was reported that fifty percent of all dental restorations placed in upstate New York consisted of amalgam.[5] However, at that point the use of dental amalgam was declared to be malpractice, and the American Society of Dental Surgeons (ASDS), the only US dental association at the time, forced all of its members to sign a pledge to abstain from using the mercury fillings.[6] This was the beginning of what are known as the first dental amalgam war.[7] - excerpt wikipedia.
Who invented filling?
In 1833 the Crawcour brothers, two Frenchmen, brought amalgam to the United States, and in 1844 it was reported that fifty percent of all dental restorations placed in upstate New York consisted of amalgam.[5] However, at that point the use of dental amalgam was declared to be malpractice, and the American Society of Dental Surgeons (ASDS), the only US dental association at the time, forced all of its members to sign a pledge to abstain from using the Mercury fillings.[6] This was the beginning of what are known as the first dental amalgam war.[7] - excerpt wikipedia.
What are the parts of a Seton implant?
the tubing protrudes through the anterior (front) or less commonly, the posterior (rear), chamber of the eye. An attached reservoir, called a plate, is placed under the conjunctiva of the eye
What are posterior lead in ecg?
V7-9 placed around the back. They're rarely used. II, III aVF -> inferior V5, V6, I, aVL -> lateral V1, V2 -> septal V3, V4 -> anterior
Why is mercury used in fillings?
Dental amalgam is an acceptable material for dental fillings. It lasts a long time (15-20 years), it is very affordable, and it is easy to use. On the down side, amalgam is not cosmetic, and eventually all amalgam fillings fail and must be replaced. There are more modern materials that can be matched to the color of the tooth being filled. Some dentists have expressed concern over the possible toxic effects of mercury leaking from the amalgam. However, considering the BILLIONS of amalgam fillings that have been placed over the past century, it has not been scientifically established that amalgam poses a significant health threat. Nevertheless, you can find several websites that trumpet the horrors of alleged mercury poisoning from amalgam fillings. On a personal note, it has been my experience that dentists who encourage patients to remove all their amalgam fillings and replace them with 'non-toxic' fillings are looking to line their own pockets with gold. If a filling is clearly failing, that is one thing, but to remove a perfectly functioning amalgam (and remove more tooth structure in the process) is, in my opinion, irresponsible and unethical. Today, many dental offices are 'mercury-free'. and that is fine. As the costs of alternative materials come down, eventually amalgam fillings will simply be a quaint sidebar in the history books of dentistry.
Why dental insurance don't cover fillings on molars?
I suspect that your dental insurance does cover fillings on molars, but only from amalgam material (silver fillings) not composite material (white fillings). Why? Molars bear the heaviest chewing workload in the mouth and amalgam is more durable than composite. Also amalgam is usually less expensive. Usually an insurer will apply a provision called LEAT--Least Expensive Alternative Treatment--to the payment of a composite filling that is placed on a molar or other tooth where the coverage is for amalgam fillings. This means that they will pay as if the composite filling was an amalgam one. Here is an example. Say an amalgam two surface filling on a molar costs $150 but a two surface composite filling costs $220. And say your insurance pays 80% of the cost. $120 is 80% of $150, so your insurance would cover $120 and you would be left to pay $100 (the difference between the payment and the $220 for choosing a composite filling.)
What was the main reasons holistic dentistry started?
Supporters of holistic dentistry state that mercury in amalgam fillings causes ill effects when placed as an
When can dental spacers be removed?
Dental spacers can be removed once the teeth for which the dental spacers were placed have sufficiently erupted into the spaces provided by the spacers. Your dentist or orthodontist can tell you if this has occurred.
What are the symptoms of aluminum poisoning?
It has never been demonstrated that there any such thing as 'amalgam poisoning'. In extremely rare cases, people have been shown to be allergic to one or more components of amalgam, but that is not the same as amalgam poisoning.There are numerous websites and publications that try to make the claim that amalgam is toxic and dangerous. Nevertheless, the empirical evidence indicates amalgam fillings are extremely safe and adequate as dental restorations.Consider this: Over the past 150 years, there have literally been billions of amalgam fillings placed in hundreds of millions of teeth in hundreds of millions of mouths throughout the world. If there was a significant health risk associated with amalgam fillings, it would have shown up by now at least in the millions. This simply is not the case.If amalgam fillings were the cause of even half of what many people claim, it would be simple enough to demonstrate. All that would have to be done is collect health data on a few thousand people who have amalgam fillings. Then do the same with a few thousand people who have never had amalgam fillings. Then compare the data from the two groups. After allowing for age, sex, race, geography, and nutrition, if amalgam fillings are responsible for anything from Alzheimer's to Aids to Zebra stripes, it will show up clearly in the amalgam group and not in the control group. If not, then amalgam fillings are not the culprit.Take the advice of Consumers Union who did an in-depth investigation into the claims that amalgam fillings were dangerous: If a dentist tells you all your amalgam fillings need to be replaced due to toxicity or some obscure medical condition, hold on to your wallet. The dentist is trying to line his pockets with gold. An "amalgam" is made from mercury mixed with other metals (silver, zinc, etc), and mercury poisoning is not all that rare. If something has been used over 150 years, those that use it are not going to be extremely willing to change. If your dentist suggests you replace your fillings, but all means consult other experts, but include a medical doctor. You may be one of those 'rare' persons whose exposure to even a small amount of mercury is a serious health risk.
Are dental implants worth the effort to have them in?
if your teeth are worn down dental implants is a great option; they are an alternative to getting dentures placed in your mouth and can restore your smile.
Are amalgam tattoos contagious?
Nope! They are like a normal tattoo - confined to one area, they cannot spread by themselves. However, multiple amalgams may result in a person having more than one. New ones may appear if old amalgams are replaced, new amalgams are placed or if a tooth with an amalgam is extracted.
Where are instruments first placed to be cleaned and disinfected after a dental procedure is performed?
answer is B. in the contaminated area
