Crowns and most bridges are prosthetic devices fixedly. Unlike dentures, which can be removed and clean daily, crowns and bridges are cemented onto existing teeth or implants, and only a dentist can remove them.
How do crowns work?
A crown is used to entirely cover a damaged tooth. Also can be used to improve the appearance, shape or alignment of the tooth. A crown can also be placed on an implant to achieve the shape and functional structure of a tooth. It is possible to match the color of porcelain crowns or ceramic with their natural teeth. Other materials include gold and metal, acrylic and ceramic alloys. These alloys are generally stronger than porcelain and may be recommended for back teeth. Sometimes used usually Porcelain bonded to the outer face of a metal ring, providing ASII strong and aesthetically pleasing restoration.
The dentist may recommend a crown to:
- Replace a large filling when there is not enough tooth
- Preventing tooth weakened fracture
- Restore a fractured tooth
- Post a bridge
- Cover a dental implant
- Cover a discolored or poorly shaped tooth
- Cover a tooth that has undergone a root canal
How do bridges work?
If you are missing one or more teeth, the dentist will recommend a bridge. The gaps between missing teeth make, over time, the remaining teeth to rotate or shift into the empty spaces, resulting in a bad bite. The imbalance caused by missing teeth can also cause gum disease and disorders of the temporomandibular joint (TMJ).
Bridges are commonly used to replace one or more missing teeth, and occupy the space left by them. The dentist bridges cemented to the natural teeth surrounding the empty space or implants placed in the space without teeth. The teeth that support the bridge are called pillars. The bridge includes replacement teeth (in the edentulous space) needed to cover the loss; these teeth are called pontic and are attached to the crowns that cover the abutments. As with the single crowns, various materials for bridges. The dentist can help you decide which to use based on the location of the missing tooth or teeth, its function, aesthetic considerations and cost. The color of porcelain or ceramic bridges can be matched to that of your natural teeth.
How are crowns and bridges made?
Before making a crown or a bridge, the dentist must reduce the size of the tooth or teeth to the crown or bridge will fit over it. Then the dentist will take a dental impression to provide an exact mold for the crown or bridge. When using porcelain, the dentist will determine the correct shade for the color of the crown or bridge to match that of their teeth.
Using this impression, a dental lab then makes your crown or bridge material specified by the dentist. While performing the permanent crown or bridge will place a temporary crown or bridge to cover the prepared tooth. When the permanent crown or bridge is ready, remove the temporary crown or bridge is cemented to the prepared tooth again.
How long do crowns and bridges?
While crowns and bridges can last a lifetime, sometimes come loose or fall out. The most important step you can take to ensure the longevity of your crown or bridge is to practice good oral hygiene. If the teeth or bone holding bridges are damaged by dental disease, the bridge will lose support. Keep your gums and teeth healthy by brushing with a fluoride toothpaste at least twice a day and flossing daily. Also, see your dentist and hygienist regularly so that perform checkups and professional cleanings.
To prevent damage to your new crown or bridge, avoid chewing hard foods, ice or other hard objects.