No. There are a few reasons behind this myth:
- Any large cavity filled with any material is more likely to fracture. Such teeth should be crowned or onlayed before a fracture occurs. It's not necessarily the fault of the filling if your tooth fractures, its the weakness caused by the removal of tooth when cleaning out the decay.
It's because it is impossible to know when a tooth is likely to fracture, there's just some general "rule of thumbs" that we follow. Last week, I had a fellow with a perfect tooth (never filled) that inexplicably cracked and had to be extracted. He'd been to a dentist, 2 doctors, the hospital (CT scans), started various drugs for "neuralgia", and was finally referred to me for an opinion before heading towards neurologist. Even then I wasn't 100% confident until I called him the following day; I was sweating overnight ( and probably so was he!). Every procedure, including crowns, carries risks that are not easily assessed like measuring a tyre pressure for your car. All health professionals face the same issues e.g.medical treatment and drugs have side-effects. All we can do is watch the research for guidance, and throw in a bit of experience.Just wondering why my dentist never mentioned this to me. Based on what you have said, it's standard practice to do the crown or onlay in large cavity filled teeth at risk of fracturing?
Correction, you didn't say "fracture", so I will apologise and retract that particular criticism. And something that "happens to have worked" is anecdotal, just like an earlier post about lateral incisors and crowns; the literature does not support it. I stand behind the rest of my statements - if you want references I have a vast collection and will look for stuff if you request, and if I have the time. Here's a nice graphic one about fractures I have on file from 2002.Excuse me, but where did I say "crowns create fractures"? When I said root failure I meant a root requiring a root canal not a fracture, otherwise I'd have said "root fracture". No need to respond aggressively or to be patronising. I was just repeating something a dentist told me which happens to have worked. You frequently give the same advice I do after I have given it so it seems you agree with me most of the time!
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