@ArseInTheCoOpWindow
I am sorry for your teeth problems. I am a dental professional, but without seeing you in person I cant diagnose your issue, ...so take what I say as a guideline.. It is almost 100% true that what your dentist is telling you is correctðŸ˜
I hate to give you a dissertation but I feel I need to explain the whole process of what's actually going on in your mouth...
I, too am a clencher... I dont remember exactly how many pounds per square inch the human bite is capable of, but suffice it to say..it is enormous. Since we are clenchers we subject our poor teeth to an unusually horrific amount of extra pressure...I have even worn through many a night guard!
Here's a little bit about teeth...the enamel surrounding our teeth is the strongest tissue in our body...unfortunately, mammals have bacteria in their mouths that produce acids when they poop on our teeth ( sorry to be so graphic..but in plain English it's the truth) of course we can't see this going on because the bacteria are microscopic
Over time, this acid can penetrate the enamel of our teeth if we don't brush and floss regularly(at least 2times /day)
And if we eat lots of carbohydrates which the bacteria especially love, the rate of decay is faster.
Another problem is if we drink lots of acidic wine, tea, etc.
Ok, so this all leads to cavities in our teeth which can go undiscovered for several years especially if we wait until we have an actual toothache to go to the dentist...by then the cavity is usually huge....to 'fill' this cavity the dentist must drill out the affected part of the tooth and then place some kind of material in the drilled out hole. .. back in the olden days, dentists used what was called amalgam..which was mercury mixed with silver and over time, especially with a clencher, these 'fillings' would get cracks in them thereby requiring that the filling be replaced with an even bigger filling. And every time this happens the integrity of the enamel is lessened
Not too many years ago when it was discovered that mercury was actually poisonous, a white glass composite that could be mixed and put in the tooth and then cured with a UV light... these fillings looked fabulous ! Like a brand new virgin tooth.....but..and its a big but because they were very expensive and..it was later discovered that these fillings weren't as durable as the mercury ones..they developed gaps between them and the actual enamel and also could develop cracks...allowing the bacteria is get to the vulnerable under layers of the teeth.
Now we get to your present state of affairs
You didn't say how old your are but it is really quite a miracle that our teeth can survive as long as they do considering what we subject them to.....my father passed a few years ago and had every single tooth that had erupted into his gums since he was 6 years old on..pretty amazing ! 4 first molars and 8 front teeth that were 86 years old
Sorry for getting side tracked..
Anyway, sounds like your dentist felt that the tooth he filled was salvageable ...but that the other 4 that he recommended to put crowns on ( the ceramic casings you're referring to) are too far gone...our teeth actually get microscopic cracks in then also from chewing on hard things like ice, or from clenching.
If these crack from above the gumline(part of the tooth we can see) then a crown can be put over the cracked tooth.....if the crack extends down into the root of the tooth, it can't be crowned and it must be pulled...unfortunately I know this from first hand experience ðŸ˜ðŸ˜ðŸ˜ðŸ˜
I had to get an implant put in the vacant spot. It really broke my heart to have to get a tooth pulled! It was a first molar that I had grown to love and cherish since it'd been in my mouth for about 50 years🎻🎻🎻😂
Lol, I've run on so long, I'm going to post this bit before it's lost and will come back and post your options in a short bit