ALL CERAMIC (PORCELAIN) DENTAL CROWNS
Types of Dental Crowns
There are three kinds of dental crowns, each based on its type of construction:
All Ceramic (Porcelain) Dental Crowns
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.
- The original type of all-ceramic was the “porcelain jacket.”
- Nowadays, instead of porcelain it’s much more likely that an “engineered” compound is used.
(To keep things simple, on this page we just use the word “porcelain” to refer to all types of dental ceramics.)
Some of the brand names associated with all-ceramic crowns are: Dicor, Cerapearl, Optec, Empress, BruxZir, IPS e.max, Vitadur, Hyceram, Cerestore, Procera, Inceram, Cerec, ProCad, Vitablocs and Paradigm.
Advantages of Ceramic Dental Crowns:
The single biggest advantage of placing an all-ceramic crown instead of other types has to do with appearance. Their 100% ceramic construction allows them to altogether avoid some problems that must be managed when other types of crowns are used.
- Some of the fabrication techniques used to make these crowns can produce results that are amazingly lifelike and unmatched by any other type of restoration.
- The entire thickness of the crown is 100% ceramic. 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 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.
- Another esthetic advantage of ceramics over PFM’s.Beyond the obstacle just described, the metal substructure of a PFM 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.
Placing an all-ceramic crown may offer some advantages in regard to biocompatibility.
- The types of ceramics used to make them are typically no more abrasive than dental enamel itself (gold crownshave this advantage too.).
In comparison, the type of porcelain used to make PFM crowns can be very abrasive to opposing teeth and dental restorations and cause significant wear of them (especially in cases where it hasn’t been polished or glazed appropriately).
- While relatively rare, some people are allergicto some of the component metals found in the various types of alloys that can be used to make PFM crowns.