ALL CERAMIC DENTAL CROWNS (FULL PORCELAIN CROWNS / VENEERS)
Just as their name implies, all-ceramic dental crowns are restorations whose full thickness is made entirely of a glass-like substance, such as porcelain.
Advantages of ceramic crowns
a) Superior esthetics.
The single biggest advantage of placing an all-ceramic crown instead of other types has to do with appearance.
Why this difference matters?
Light handling characteristics - the most important difference.
The lustrous (shiny, glossy, luminous, sparkling, glistening) look of a natural tooth is generated by the way light penetrates into its enamel layer and then is reflected back out.
The goal of porcelain crown construction is to mimic this effect. And generally speaking, the thicker and more translucent the crown's porcelain, the closer it will match the light handling characteristics (and thus appearance) of a natural tooth.
The problem with Porcelain Fused to Metal Crowns
Since the metal substructure of a Porcelain fused to metal crown is dark, it must be masked over with a layer of very opaque (chalky-white) porcelain so its tint doesn't show through.
As a result, only a comparatively thinner layer of translucent porcelain can be placed, thus reducing the crown's overall ability to truly mimic the look of a natural tooth.
The advantage of all-ceramics / full porcelain crowns (veneers)
Since all-ceramic crowns aren't burdened with the task of masking a dark metal substructure, a greater portion of their thickness can be composed of comparatively more translucent porcelain. And due to this fact, they tend to create a more lifelike look.
Another esthetic advantage of ceramics over Porcelain Fused to Metal Crowns
Beyond the obstacle just described, the metal substructure of a Porcelain fused to metal crown also creates a second difficulty. Its edge may possibly start to show if the patient's gums recede, thus spoiling the overall appearance of the tooth.
While dentists do have techniques that can help to address this issue, a giant advantage of placing an all-ceramic crown is that this problem simply doesn't exist with them.
How the method of crown fabrication can affect appearance.
When it comes to aesthetics, it's important to know that (literally) not all full-ceramic crowns are created equally.
Placing an all-ceramic crown may offer some advantages in regard to biocompatibility.
When might choosing an all-ceramic crown make a good choice?
In those situations where the cosmetic appearance of a tooth is of at least some concern, then placing an all-ceramic crown may make sense.
Front teeth (incisors and canines) -
a) Teeth that show prominently
In cases where the esthetics of the crown are critically important, a ceramic one might make the best choice above all other types. They're known for their ability to mimic the lustrous nature of natural teeth due to the level of characterization and translucency that can be built into them.
A person's premolars are those teeth positioned directly behind their eyeteeth. And even though these are technically "back" teeth, they usually hold a prominent position in a person's smile.
If an all-ceramic crown is placed, one made using zirconia would likely make the best choice due to the greater strength characteristics that this material offers.
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