Dental Crown Best Replacements Problems To Fix Repair Replace Failed Bad Porcelain Crowns

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FAQ: Dental Crowns

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Question:
New All Porcelain Crowns I received 6 new all porcelain crowns on the upper front. One crown has cracked down the center, four others have chips. It has been suggested that it was caused from grinding at night.

I do not grind or clench at night, or eat anything hard enough to cause chipping. My original teeth did not show any signs of grinding. The new crowns have only chips on the face of the tooth and none on the back surface, which would indicate to me that, if endeed grinding were involved, the back of the crown would be damaged also.

Can crowns be defective due to a faulty process during manufacturing or faulty materials? ...Visitor from NC

Answer:
From what you describe there are many reasons for the failure of the veneers. The porcelain could have been defective and had some form of contaminate in it.

The supporting tooth structure under the veneers may apply stresses that weaken the veneers. You may be placing stress on them by grinding your teeth, although there had been no signs prior the new position and length may not be compatible with the function of your mouth.

The fracture would occur on the front of the teeth if the stress is placed on the back of the teeth. Compare this to bending a stick. as the bend is away from you and pressure is applied to the back of the stick the front is what gives way to the breaking.

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