I had CEREC crowns placed on tooth numbers 19, 30 and 31. I was told by my dentist that CEREC is just as durable as any other crown, looks more natural, would involve less pain, reduced the number of dental visits and cost the same as a traditional crown. I chose CEREC restorations based on the above factors. In less than ten years, all three crowns failed (cracked), the latest resulted in a root canal and tremendous pain. Is my dentist or Sirona responsible, and what should/can I do?
March 5, 2015
Answer: Cerec Crown Failures The Cerec technology is used world wide successfully so a failure is not the responsibility of Sirona. All porcelain crowns such as these whether lab made or cerec made can fail, especially in the lower molar areas where the biting pressure is the greatest of any teeth. The strength of the bite, whether habits such as clenching or grinding exist, the thickness of the restoration, etc. can have a great effect on longevity. I have no way of knowing what material these were made of, but the materials available 10 years ago were not as strong as newer materials we have today such as emax or all zirconium crowns for posterior restorations such as yours, or an older technology such as gold or porcelain to metal.
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March 5, 2015
Answer: Cerec Crown Failures The Cerec technology is used world wide successfully so a failure is not the responsibility of Sirona. All porcelain crowns such as these whether lab made or cerec made can fail, especially in the lower molar areas where the biting pressure is the greatest of any teeth. The strength of the bite, whether habits such as clenching or grinding exist, the thickness of the restoration, etc. can have a great effect on longevity. I have no way of knowing what material these were made of, but the materials available 10 years ago were not as strong as newer materials we have today such as emax or all zirconium crowns for posterior restorations such as yours, or an older technology such as gold or porcelain to metal.
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March 5, 2015
Answer: Look for a CEREC Trainer The key to a successful CEREC crown is to have the crown 1.5mm thick at the thinnest part. If it is thinner than that the risk of fracture goes us. You also have to consider what you eat. Eating very had things can break natural teeth as well as the ones we make.
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March 5, 2015
Answer: Look for a CEREC Trainer The key to a successful CEREC crown is to have the crown 1.5mm thick at the thinnest part. If it is thinner than that the risk of fracture goes us. You also have to consider what you eat. Eating very had things can break natural teeth as well as the ones we make.
Helpful
