A Dental Crown is a type of dental restoration which completely caps or encircles a tooth or dental implant. They are typically bonded to the tooth using dental cement. Crowns can be made from many materials, which are usually fabricated using a dental lab. Crowns are often used to improve the strength or appearance of teeth. While inarguably beneficial to dental health, the procedure and materials can be relatively expensive.
The most common method of crowning a tooth involves using a dental impression of a prepared tooth by a dentist to fabricate the crown outside of the mouth. The crown can then be inserted at a subsequent dental appointment. Using this method of tooth restoration allows use of strong restorative materials requiring time consuming fabrication methods requiring intense heat, such as casting metal or firing porcelain which would not be possible to complete inside the mouth.
Why Choose a Dental Crown?
Dr. Knight may recommend a crown on a tooth that has too much decay to restore with a filling. A dental crown may also be placed on a properly integrated dental implant. Dental crowns are recommended to restore the function and appearance of a tooth that has undergone Root Canal Therapy (RCT).
Although there may be enough tooth structure remaining after a root canal to restore the tooth with an intracoronal restoration, this is not suggested in most teeth. The vitality of a tooth is remarkable in its ability to provide the tooth with the strength and durability it needs to function properly in biting and chewing. The living tooth structure is surprisingly resilient and can sustain considerable abuse without fracturing.
Consequently, after RCT is performed, a tooth becomes extremely brittle and is significantly weaker than the adjoining teeth. Fractures of endodontically treated teeth increase considerably in the posterior teeth (i.e. molars and premolars) when cuspal protection is not provided with a crown. Posterior teeth should, in almost all situations, be crowned after undergoing RCT to provide for proper protection from fracture.
Who is a Candidate for Dental Crowns?
This treatment is designed for patients that need a dental restoration when a large cavity threatens the ongoing health of a tooth or if a portion of the tooth has been broken, fractured or had treatment with root canal therapy.
Some patients may want to improve their smile with cosmetic dentistry by having crowns placed to help them feel and look their best.
Tooth Preparation Procedures:
Preparation of a tooth for a crown involves permanently removing much of the tooth’s original structure, including portions that might still be healthy and structurally sound. All currently available materials for making crowns are not as good as healthy, natural tooth structure, so teeth should only be crowned when an oral health-care professional has evaluated the tooth and decided that the overall value of the crown will outweigh the disadvantage of needing to remove some healthy parts of the tooth.
Traditionally more than one visit is required to complete crown work, the additional time required for the procedure can be a disadvantage; however, the increased benefits of such a restoration will generally offset these considerations.
Kinds of Dental Crown Restorations Porcelain or Ceramic crown restorations: These have traditionally been made off-site in a dental laboratory. This method of fabrication involves molds and temporary crowns, but can yield quite beautiful results. Processed at high temperatures and pressed, polished, or milled and include porcelains, glasses, and glass-ceramics.
Gold crown restorations: Because of the expansion properties, the relatively similar material costs, and the aesthetic benefits, many patients may choose to have their crown fabricated with gold. Gold crowns can add strength to molars that all-ceramic crowns cannot. They are often more expensive and follow the market value of gold.
PFM (porcelain fused to metal) crown restorations: This is a standard crown with a base metal, noble metal, or high noble metal underneath and porcelain exterior. This type of crown is often used for the added strength the metal gives and the aesthetically pleasing appearance of the tooth colored porcelain.
Stainless Steel crown restorations: This type of crown is considered a temporary or provisional crown to be utilized as an interim restoration of at least six months duration during restorative treatment to allow adequate time for healing or completion of other procedures.
More information about Dental Crown Restoration
It is important to bear in mind that it is usually the damage to a tooth that dictates the need for a crown, and alternative treatments are usually less effective. However, it is also important to realize that even when risks and benefits are objectively analyzed, their significance depends on the priorities of the patient.
Phone Number: 801.731.3200
Some of the information was taken from Wikipedia