Composite, fusion, compound, amalgam...
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.)
They will give you anesthetics, like a shot. That will make it so you don't feel anything. Then, they will drill the decay out of the tooth/teeth, then fill it with a amalgam or composite filling. Composite is tooth colored, amalgam is the typical silver looking filling.
Batman beat Cap'n in the Amalgam crossover books
It is problematic to change old large amalgam fillings to composite fillings because there may not be enough tooth structure left to support the new filling. If this is the case, the tooth will probably fracture soon after the new filling is placed. A better, safer alternative in this situation would be to place a porcelain crown instead of a filling.
An amalgam restoration is when a tooth is repaired using amalgam. Usually, the amalgam is used to fill a hole that is found in a tooth.
The metal used for fillings now is called Amalgam. Amalgam is made up a combination of copper, tin, silver, Zinc and about 50% mercury. of There is also composite resin which is a combination of fine glass and plastic.
Amalgam is a compound cotaining mercury
The amalgam of mercury was very heavy.
Amalgam is the word for a mercury alloy. so sodium amalgam is a mixture of sodium and mercury.
Dental Amalgam is a restorative material. It's a mercury, silver, tin, & copper compound. It was the preferred type of restorative for carries (fillings) until around 2000 at which point composite resin fillings became the norm. This was due to the large amount (nearly half) the material being composed of mercury.
The dentist filled my cavity with a silver amalgam.