Dental Crowns / Bridges
A dental crown is a tooth-shaped "cap" that is placed over a tooth -- to cover the tooth to restore its shape and size, strength, and 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.
A dental crown may be needed in the following situations:
All-Resin Dental Crowns
All-resin dental crowns are less expensive than other crown types. These resin crowns are tooth colored however, they wear down over time and are more prone to fractures than porcelain-fused-to-metal crowns. They are usually only used for temporary crowns for few weeks to few months’ time.
Stainless Steel Crowns
Dental implants are metal posts or frames that are surgically positioned into the jawbone beneath your gums. Once in place, they allow your dentist to mount replacement teeth onto them.
Metals used in crowns include gold alloy, other alloys (for example, palladium), or a base-metal alloy (for example, nickel or chromium). Metal crowns withstand biting and chewing forces well and probably last a long in terms of wear down. The metallic color is the main drawback but a good choice for out-of-sight molars.
Porcelain fused to metal
PFM dental crowns can be color matched to your adjacent teeth (unlike the metallic crowns). Next to all-ceramic crowns, porcelain-fused-to-metal crowns 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 as well as long bridges where the metal is needed for strength.
Metal Free Crowns / Bridges
All-ceramic or all-porcelain dental crowns provide better natural color match than any other crown type and may be more suitable for people with metal allergies. All-ceramic crowns are a good choice for front teeth are digitally constructed either in an office that has the software and hardware to produce them or in a dental lab. Dental offices that have the software and hardware have the ability to produce a crown in one visit with no need for a temporary.