According to Wikipedia, Dental Crowns are used to cover a tooth in order to improve its appearance, strength, size, and shape. Dental Crowns are like caps that are cemented on top of the tooth fully encasing the visible part of your tooth just above your gum line.
Your dentist may suggest a Dental Crown if you have a weak tooth. Teeth that are broken or badly decayed may need Dental Crowns in order to hold the pieces of the cracked tooth together.
Dental Crowns are also used to restore broken teeth and to cover a tooth that has worn down. Your dentist may also recommend Dental Crowns if you have large fillings and not enough tooth to support it. Dental Crowns are also used to hold dental bridges in place and to cover Dental Implants.
Children may also require Dental Crowns on baby teeth if a tooth has a deep cavity. Your family dentist may also suggest Dental Crowns to protect kids who have a higher risk of tooth decay.
There are several types of Dental Crowns available. Stainless steel, all metal, such as alloy or gold, all resin, all ceramic, and porcelain fused to metal.
Stainless steel crowns are normally used on a temporary basis while your permanent crown is being made. Stainless steel crowns are prefabricated and make an ideal choice for children’s teeth, as less dental appointments are required.
Gold alloy, alloy, chromium or nickel are also used for Dental Crowns and compared to other materials require less tooth structure removal. Metal crowns hold up better to chewing and biting and rarely break or chip. According to your dentist, the only drawback to metal is the color. Metal Dental Crowns are best for back teeth and molars that are not seen.
Porcelain fused to metal Dental Crowns can be matched to the teeth surrounding the restoration; however, there will be more wear to the surrounding tooth than resin or metal Dental Crowns. The porcelain part of the crown can also break off or chip. Another drawback to these types of crowns is the dark lines that can sometimes appear at your gum line, and even more so if your gums begin to recede. These crowns are appropriate for both back and front teeth.
All resin crowns wear over time, but cost less than other Dental Crown types. All resin crowns are prone to fractures as well.
All ceramic or all porcelain Dental Crowns will give you the most natural looking smile as they can be matched to the rest of your natural teeth. People who suffer from metal allergies may also be more suited to all ceramic or all porcelain Dental Crowns as well. Although not as strong as porcelain fused to metal and metal Dental Crowns, they make an excellent choice for front teeth.