![10-1 15 Single back tooth crown on right molar](https://www.dentalimplantcenter.com/wp-content/uploads/10-1-15-300x190.jpg)
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Occlusal view, broken tooth #3. When teeth have large fillings, they are susceptible to cusp fracture. Molars frequently have one or two cusp fractures.
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Retention pins are used when the tooth is missing more than one wall. In this case, this tooth is now missing three walls. Only the palatal wall exists.
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Side view, core build-up. A core build-up material of either composite resin or amalgam is used to rebuild the broken part of the tooth. Once the tooth is whole again it can be prepared for a crown.
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Occlusal view, core build-up. A core build-up material of either composite resin or amalgam is used to rebuild the broken part of the tooth. Once the tooth is whole again it can be prepared for a crown.
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Side view of the crow preparation. There is an ideal form that good dentists prepare to for maximum crown retention and resistance to tooth fracture. A common mistake of many dentists is to over-prepare a tooth. This is because of a lack of skill or due to rushing through the procedure.
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Occlusal view of the crow preparation. There is an ideal form that good dentists prepare to for maximum crown retention and resistance to tooth fracture. A common mistake of many dentists is to over-prepare a tooth. This is because of a lack of skill or due to rushing through the procedure.
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Final impression of the crown preparation. This may be the most important step in the multi-step process. When the dentist captures a perfect impression of the tooth, the lab can then make a perfectly fitting crown which should last decades. Conversely, the majority of dentists cannot make a perfect impression whereby the lab cannot make a perfectly fitting crown. The result is short term failure due to cavities that form where the impression was not good.
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An acrylic, temporary crown is used to hold the tooth and restore aesthetics while the permanent crown is being fabricated.
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Close-up of porcelain crown. Note the detailed anatomy to simulate a natural tooth. Most labs cannot recreate this natural anatomy. Many commercial crowns do not even resemble a natural tooth.