Is it normal to grind down a porcelain crown?

My dentist knocked off my 4 year old porcelain crown, put it back incorrectly. The next day ground it down to adjust it to fit right again. Now it broke. Is this normal practice

Doctor Answers 4

Is this normal?

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I'm sorry for your problems. What you are describing is not typical but ther may be other factors that come into play that caused the crown to need adjusting. I suggest visiting with your dentist and trying to work out the problem.

Dallas Dentist

Porcelain crown #DrSoftTouch

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Usually, when a crown comes off easily, it's due to a underlying problem such as a fracture or decay. If the cement simply failed and the crown needs to be recemented, an adjustment might be needed at cementation. Now that the crown has fractured, a new crown would be recommended.  I hope this helps. Click save under my name to ask me more questions in the future.

Healthy crowns can't get knocked off

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If a crown came off, there were other issues, usually a fracture or decay problem.  Recementing can be a challenge if the tooth has split, and the bite will feel "off".  Grinding on it to adjust/fix the bite is normal practice, but it is likely best to be replaced or the primary situation addressed/fixed.

Crown adjustement

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There are times where a crown might need an adjustment after recementing.  However, it is very minor and should not change the integrity of the crown to the point that it causes it to fracture.  I advise you to go back to your dentist and have him reevaluate the fractured crown.


Dr. Maddahi

Kourosh Maddahi, DDS
Beverly Hills Dentist
5.0 out of 5 stars 13 reviews

These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.