I just had a large silver filling put in the other day and I hate how it looks even though it is in the back tooth ...it also feels low ..it does not hurt ...I was wondering If I can change it to
an onlay or crown or something else or do I have to leave it?
Just have them drill out the gray-black mercury filling and have them replace it with a white porcelain filling. I asked for a dental dam, because you don't want to swallow the mercury filling pieces. Plus the dentist should provide good ventilation, to reduce exposure to mercury vapor. A good cosmetic dentist would know the proper procedures for this.
Sometimes amalgam fillings can be changed to composite fillings. It all depends on the tooth. If the filling is on the large side, sometimes it is just better to leave it be. Each time work is done on the tooth, it will weaken the tooth more. When you remove a filling, especially large ones, there is the chance the tooth may break.
It also depends on where the tooth is in the mouth and how hard you bite on that tooth. Some dental materials are much more stronger and can withstand the pressure placed on the tooth.
Composite materials have advanced so much and it is possible to place a composite filling on a molar tooth and have it withstand the pressure. Consult with your dentist and see if he/she will replace the filling for you.
Crowning teeth is the worst thing you can do to them but the favorite procedure of dentists because it is so lucrative.Frank Jerome DDS talks about why should avoid crowns in his book "Tooth Truth".Drilling a tooth down to a stub is traumatic to it's nerve and often causes the tooth to die ,either that day or later.Crowned teeth collect bacteria and this often results in periodontal problems and gum recession.Dentists usually justify crowns by saying they will protect a tooth from fracturing or protect it if it's already fractured . There is no evidence that crowns protect teeth;they weaken them.Ask your hygenist about the correlation between crowns and gum recession.
In any case, if your tooth is fracturedit was fractured by the mercury in the filling. Mercury expands and contracts. That's why it's used in thermometers.