A dental crown, also called ‘cap’ is a tooth shaped cover, placed over the entire surface of the tooth to restore its shape, size, strength, normal function and appearance. Crowns are required for different cases including; teeth with very large fillings; teeth that have had a root canal treatment; fractured teeth; injured teeth; and discoloured teeth.
What Types of Crowns Are Available?
Crowns can be made of different materials including:
• All metal (such as gold or other alloys)
• Porcelain fused to metal
• All resin
• All ceramic
• Zirconia and Porcelain
All Metal Crowns
Metals used in dental crowns include gold, nickel or chromium alloys. Compared with other crown types, less tooth structure needs to be removed with metal crowns, and tooth wear to opposing teeth is kept to a minimum. Metal crowns probably last the longest in terms of wear, withstanding biting and chewing forces well. Metal crowns rarely chip or break however the metallic colour is the main drawback. Metal crowns are a good choice for out-of-sight molars.
‘Porcelain fused-to metal’ Crowns
Porcelain fused-to metal dental crowns can be colour matched to your adjacent teeth (unlike the metallic crowns). However, more wearing to the opposing teeth occurs with this crown type compared with metal or resin crowns. The crown’s porcelain portion can also chip or break off. Next to all-ceramic crowns, they look most like normal teeth. However, sometimes the metal underlying the crown’s porcelain can show through as a dark line, especially at the gum line and even more so if your gums recede. These crowns can be a good choice for front or back teeth.
All-resin dental crowns are less expensive than other crown types. However, they wear down over time and are more prone to fractures than porcelain-fused-to-metal crowns.
All-ceramic and all-porcelain Crowns
All-ceramic and all-porcelain dental crowns provide better natural colour match than any other crown type and may be more suitable for people with metal allergies. However, they are not as strong as porcelain-fused-to-metal crowns and they wear down opposing teeth a little more than metal or resin crowns. All-ceramic crowns are a good choice for front teeth.
Zirconia or Milled Crowns
Zirconia, or milled crowns are digitally constructed in a dental lab.
Temporary versus permanent
Temporary crowns can be made in your dentist’s office, whereas permanent crowns are made in a dental laboratory. Temporary crowns are made of acrylic and can be used as a temporary restoration until a permanent crown is constructed by a lab.
Consumer warning - North Shore Cosmetic: Medical and Dental, use 'before and after' photos to showcase possible outcomes and empower patients to make informed decisions. They are not intended to be misleading or deceptive. We have made an effort to ensure that all photographs are taken under the same light, with the same camera, with the same exposure and positioning. No photo has been re-touched or altered in anyway. All Photos are Copyright Dr Vera Georghy, 2017.
Consumers must be aware that all dental results can very from person to person. Please view with caution.
Case Study 1
Before and After
Case Study 2
Before and After
Please note: ‘Any surgical or invasive procedure carries risks. Before proceeding, you should seek a second opinion from an appropriately qualified health practitioner.’