A crown is used to cover or completely hide a damaged tooth. Crowns not only support a damaged tooth, they can also improve its appearance, shape, or occlusion. A crown can also be placed on an implant, and it will perform the function of a tooth, having its shape and structure. Porcelain crowns can be matched to the natural color of your teeth. There are other materials such as gold and metal alloys, acrylic and cermets. These alloys are generally more resistant than porcelain and are recommended for back teeth. Porcelain-fused-to-metal crowns are often used because of their durability and beauty. Porcelain is attached to a metal frame.
A bridge may be recommended if you are missing one or more teeth. The gaps left by missing teeth eventually cause the remaining teeth to move or occupy empty spaces, leading to a malocclusion. In addition, imbalance due to missing teeth can lead to gum disease and temporomandibular joint dysfunction.
A CROWN IS A COVER OR “CAP” YOUR DENTIST CAN PUT OVER A TOOTH.
A crown restores a damaged or missing tooth to its normal shape, size and function. A crown can protect the tooth or improve the way it looks.
Your dentist may recommend a crown to:
Support a tooth that has a large filling when there isn’t enough natural tooth structure remaining
Attach a bridge to replace missing teeth
Protect a weak tooth from fracturing
Restore a fractured tooth
Cover a badly shaped or discolored tooth
Cover a dental implant
WHAT IS YOUR CROWN MADE FROM?
Crowns can be made from several types of materials. Metal alloys, ceramics, porcelain, porcelain fused to metal or composite resin may be used. When a crown is made, the material often is tooth colored to blend in with your natural teeth.
You want your crown to look natural and fit comfortably in your mouth. To decide which material to use for your crown, you and your dentist will consider many factors, such as:
the tooth’s location and function
the position of the gum tissue
the amount of tooth that shows when you smile
the color or shade of the surrounding teeth
Costs and insurance should also be discussed and considered. After you and your dentist have looked at these factors, you might want to talk about your personal preference.
STEPS OF PLACING A CROWN
It usually takes two dental visits to complete the treatment. When a crown is placed over a natural tooth, several steps are involved:
Your dentist prepares the tooth by removing the outer portion, including any decay, so the crown will fit. If additional tooth structure is needed to support the crown, your dentist may build up the core of the tooth.
An impression is made to create an exact model of your tooth. The impression can be made from a mold or by digitally scanning the tooth.
To protect your tooth while the permanent crown is being made, a temporary crown is placed. Making the permanent crown usually takes less than 2 weeks. While you have a temporary crown, the tooth may be sensitive to hot and cold. Avoid chewing gum and eating sticky foods during this time. If your dentist has special equipment, you may be able to get your permanent crown on the same day.
When the permanent crown is ready, your dentist places it in your mouth and makes the necessary adjustments. When you and your dentist are happy with how it looks and feels, the crown is cemented into place.
CROWN PLACEMENT
Before crown: Worn filling with decay under filling
Crown is placed over prepared tooth
After crown placement
CARING FOR YOUR TEETH
Like natural teeth, crowns can break. And, the tooth under the crown can still get cavities. To prevent cavities or damage to your crown:
Brush your teethtwice a day with a fluoride toothpaste and clean between your teeth every day. Look for oral care products that have the American Dental Association’s Seal of Acceptance, which tells you they meet ADA standards for safety and effectiveness.
Avoid chewing hard foods, ice or other hard objects, such as pencils, especially if you have tooth-colored crowns.
Be sure tosee your dentistfor regular exams and professional teeth cleanings.