A dental crown is a tooth-shaped “cap” that is placed over a tooth – covering the tooth to restore its shape and size, strength, and/or to improve its appearance. The crowns, when cemented into place, fully encase the entire visible portion of a tooth that lies at and above the gum line.
Why Is a Dental Crown Needed?
A dental crown may be needed in the following situations:
- To protect a weak tooth (for instance, from decay) from breaking or to hold together parts of a cracked tooth.
- To restore an already broken tooth or a tooth that has been severely worn down.
- To cover and support a tooth with a large filling when there isn’t a lot of tooth left.
- To hold a dental bridge in place.
- To cover misshapened or severely discolored teeth.
- To cover a dental implant.
Zirconium Oxide Crowns
Zirconium oxide is the latest material to be adapted by modern dentistry. The introduction of this material in restorative and prosthetic dentistry is made possible by computerized dentistry technology in use at Prisma Dental, and is a decisive step towards the use of full ceramics. Zirconium oxide has very high strength and corrosion resistance. With new zirconium crown techniques, we can also eliminate the problem of exposed metal crown margins in the older, porcelain-fused-to-metal technique.
Why is a Zirconium Crown Recommended?
- The crown has a beautiful white frame, which replaces the normal metal or gold frames.
- The crown is bio-compatible with human tissues and does not cause allergies which can occur (although not often) with metal-based crowns.
- It has excellent aesthetic qualities due to the absence of metal. Metal content in porcelain crowns can cause small aesthetic imperfections resulting from transparency and light refractability.
- The crowns are made with precision accuracy, with the help of a laser scanner and a computer.
- The zirconium oxide frame is thinner than the metal frames, meaning we will prepare less of the external structure of your teeth.
- Hygienically, the zirconium crowns retain less plaque and calculus than base metal frame crowns, promoting healthier gums.