During the preparation of a tooth for a dental crown, you will typically require two visits to your dentist. The first step will involve the examination and preparation of the tooth, while the second visit will involve placement of the permanent crown.
The amount of tooth structure removed is needed to allow for the amount of porcelain. We now used pressed porcelains typically that have a beautiful cosmetic appearance. We also use pressed zirconium and at times use porcelain fused to metal.
Dental crowns are one of the many ways a dentist helps you restore your teeth to their natural state. However, these dental restorations are typically used when a tooth has a large filling exceeding the natural tooth structure, when teeth have fractures, or under the filling undermines the existing cusps and to seal teeth after root canal treatments.
A permanent dental crowns is highly durable and will last many years, but like most dental restorations, it can eventually need to be replaced. With proper care and routine dental check up, a crown may last many years, giving the patient a beautiful long-lasting smile. A dental crown is placed to:
- Restore broken or fractured teeth
- Enhance the cosmetic appearance
- Repair and restore decayed teeth
- Repair and restore fractured fillings
- Replace large and defective fillings
- Restore the tooth that has a root canal
A crown procedure usually requires two appointments:
The first appointment will include taking several highly accurate molds (or impressions) that will be used to create patient’s custom crown. A mold will also be used to create a temporary crown which will stay on patient’s tooth for approximately two weeks until his/her new crown is fabricated by a dental laboratory.
While the tooth is numb, the dentist will prepare the tooth by removing any decay and shaping the surface to properly fit the crown. Once these details are accomplished, patient’s temporary crown is placed with temporary cement and his/her bite is checked to ensure he/she is biting properly.
During the second appointment, patient’s temporary crown will be removed, the tooth will be cleaned, and his/her new permanent crown will be carefully placed to ensure the spacing and bite are accurate.
The patient will then be given care instructions and encouraged to have regular dental visits to check his/her new crown.
Dental Crown Procedure
First, the dentists start by applying local anesthetic near the tooth that needs to be restored. After numbing your gums and tooth in need of the restoration, the dentist then prepares the tooth for the dental crown and afterwards takes impressions to send to the lab to start fabricating the crown. A shade is chosen to match your existing teeth. A temporary crown is cemented while the permanent crown is being made at the lab.
Depending on the crown chosen, the dentist may also match several aspects of your teeth. For example, if you go with a full ceramic or porcelain fused meal crown (PFM), the dentist must match the color shade of your teeth. However, for other crowns, such as gold crowns, this is not necessary.
The dental crown is a hollow imitation of your tooth and fits into your tooth like a cap. However, it is made such that it fits around the tooth securely keeping out bacteria and other debris from the real tooth. The final crown is cemented in permanently after the fit and bite are verified.