My dentist put in my Permanent dental crown today and I have some questions???? (See below)?

He removed my temporary and put in my crown. Of course he needed to remove it to adjust to fit my mouth. I noticed he used his drill to grind the top of the crown to a point where it is almost flat this is a porcelen crown fused to a high noble metal (gold). He put the crown in and noticed it was still kind of high and touching my top teeth. He then grind with his drill the top molar that touches the crown underneath!!!! I don't know but is this standard protocl for instalation of a dental crown. Won't you have problems with erosion of the teeth in the future or possibly a cavity in the future. Also will the structural integrity of the dental crown be lost due to the grinding. Overall there is not problems with it right now and I have no pain just a little concerned.

My dentist put in my Permanent dental crown today and I have some questions???? (See below)?
Absolutely normal, not desired, but it is withing the scope of normal crown seating. I think you'll be fine. All dentist want the crown to come back from the lab and srop right in. Cemented within 15 minutes. But sometimes it doesn't work out that way.
Reply:I have three crowns - my dentist never drilled on top of the crown. He took the crown out of my mouth and drilled on the bottom then put it back in. I would think drilling on top would affect the structural integrity.
Reply:i think any drilling to a crown should be done by the lab tech who makes the crown...but it really shouldnt be necessary if they took the imprints properly and made the crown exactly per the mould
Reply:I've had the same stuff done to me, some dentist are real good and others not. If your dentist has a booming business and allot of help he probably knows what he is doing. I had a hell of an expensive time finding a good dentist. Usually they are in affluent neighborhoods. I found mine by asking a oral surgeon who was his dentist and not his golfing partner. You are probably okay, my front bottom teeth are worn half way down...no cavities...don't worry.





My long time present Dentist says it is important what "Lab" makes your crown, he said he had to go on a waiting list to get the "Lab" of his choice that did excellent work. I did have one dentist that had his own "Lab" and the crowns were perfect but that's where his expertise stopped.
Reply:Drilling the other molar--I'm not sure about that. Grinding down the crown itself is absolutely necessary. If the teeth don't mesh exactly the jaw becomes out of alignment and very painful. My crowns are smoother and smaller than the teeth they replaced, though they really don't look it.





Get regular checkups and brush and floss. Flossing in particular is important with crowns, as they get icky in between more easily than natural teeth. I use "brush picks" every time I eat and they are complete lifesavers. The grinding did not hurt your crown--it is very strong stuff. Can't speak to the enamel though.
Reply:What you are describing is all normal protocol %26amp; nothing you should be worried about. They more than likely removed very little tooth structure from the oppossing tooth. I've had to do this numerous times myself, because someone has a very tight bite %26amp; there isn't that much room for the porcelain and I did not want to have the metal substructure showing. So rather than "grinding" away all the porcelain, I adjusted the oppossing tooth a bit. Hope this information helps. Good luck!
Reply:A good crown may last up to 15 or even 20 yrs. Should he been doin this adjustments cozz of the mistakes from both party, the dentist n his/her assistant and the lab staff. This happens its normal, everyone make mistakes. But do make sure u keep the teeth clean, floss it n visit the dentists, just in case if u dont take care bout it well, u might end up of replacing the crown.
Reply:I'm a dentist.





First off, good question.





The answer is "no". The amount of tooth structure he removed from the tooth opposing the prosthetic (i.e. crown) was probably minimal--no more than 1/2mm if even that. While I prefer not to do this under normal circumstances, I generally have no problem doing it when needed. In some cases, it is actually better to do it.





When preparing a tooth to receive a crown, there are multiple considerations to make: retention, adequate space between the prepared tooth and the opposing tooth, etc. If the tooth onto which the crown is going to be placed doesn't protrude much above the gum-line, the preparing it for a PFM crown would result in a prepared "nub" that is extra-short. When this prepared "nub" is extra short, you run the risk of the crown not being strongly retained on the tooth. In order to not have to shorten an already-short tooth so much, it's better for the patient for the doctor to adjust the opposing tooth, especially if the opposing tooth has what we call a "plunging cusp".





I feel awful using the lay person's terms to describe the procedure!
Reply:Dont worry, smoothing a small amount off the crown is fine! And smoothing a shamper off the opposing tooth is not always nessasary but is often in practice to protect the vital tooth from precuttion, the crown is a foregn material and can wear down the enamel of the natural tooth surface from mastication (chewing), the dentist is just protecting the tooth. If you fell your bitting first on the crown don't panic, but make an appointment to get the crown smoothed again. As for the erosion, smoothing enamel doesn't and wont cause decay in the future. Erosion is the enamel unnaturally being eaten away by acidic, sugary substances, like coke or stomakc acids evan orange juice...

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