Advantages and Disadvantages of Dental Crowns
If your tooth is cracked or has a decay, dental crowns can help to restore it. There are various types of dental crowns for every taste and pocket. Below, we provide you with some useful information about pros and cons of different types of crowns.
Hence the name, all-porcelain crowns are all made of porcelain (ceramic).
All-Porcelain Crowns Advantages
- No Dark Line
Unlike porcelain-fused-to-metal crowns (PFM), all-porcelain crowns don’t have a problem of a dark line as they all made of white porcelain that perfectly imitates your natural tooth enamel.
- Cosmetic Beauty
All-porcelain crowns are translucent and smooth, matching the size, color and shade of your original teeth. All-porcelain crowns are a perfect choice for the front teeth restoration.
All-porcelain crowns are made of biocompatible material, so there is no risk of allergic reactions and gum irritation.
- Possible to Perform In One Visit
Unlike other traditional techniques which require minimum two dental visits and some turn-around time between the procedures, all-porcelain crowns can be done in one appointment. After the tooth is prepared for the procedure, it takes 20-30 minutes to place a crown and cement it.
All-Porcelain Crowns Disadvantages
All-porcelain crowns are less strong and durable than their metal and porcelain-fused-to-metal counterparts. To make your porcelain crown stronger and thicker, it is needed to remove more amount of your original tooth. Moreover, all-porcelain crowns are more exposed to cracking and chipping. The fragility may not be a concern only in case you are going to place a crown on the front teeth that usually experience less biting and chewing force. Anyway, with all-porcelain crowns, you should be more careful when playing sports and biting hard objects. Wearing mouth guards during sports may help you to save your teeth.
- Teeth Sensitivity
With all-porcelain crowns, you are more likely to experience hypersensitivity to cold and hot. Extreme temperatures may cause cracks and damage your tooth.
- Worse Fit
All-porcelain crowns feature worse fit than PFM crowns. You need a professional dentist to fit the crown correctly onto the place where the tooth meets the gum; otherwise, bad fit may negatively affect yout tooth appearance and function.
- More Teeth Reduction
One of the disadvantages of all-porcelain crowns is the fact that they need more reduction of tooth structure, even more than in case of PFM crowns.
- More Costly
As a rule, all-porcelain crowns tend to be more expansive than PFM crowns.
Porcelain-fused-to-metal crowns are made of both porcelain and metal. A metal layer is placed on the tooth, then, a porcelain veneer is fused to the metal shell.
PFM Crowns Advantages
- Aesthetic Appeal
PFM crowns provide you with a beautiful natural smile. Except the dark line which can be seen between the crown and the tooth, they look very similar to all-porcelain crowns.
Cosmetic imperfection of PFM crowns is compensated by their strength and durability achieved due to a metal component. Indeed, PFM crowns have a high level of success and with proper brushing and flossing, they can last for many years.
- Better Fit
A metal structure provides a better fit than all-porcelain crowns.
- Reasonable Price
Usually, PFM crowns are cheaper than all-porcelain ones.
PFM Crowns Disadvantages
- Dark Line on the Tooth
Along with the strength and durability, the presence of a metal component is the reason of a dark line which usually appears in the area where the crown meets the tooth. In case of the front teeth restoration, this could be a real problem. Moreover, if you have a gum recession, the dark line of metal could become more visible.
- More Tooth Trimming Is Needed
In order to place PFM crown, the dentist should remove a significant amount of tooth, than with zirconia crowns. However, this is not always a concern. Consult your dentist to choose the right type of restoration suitable for you.
Zirconia crowns are made from zirkonium, a very strong material known for its durability.
Zirconia Crowns Advantages
Zirconia crowns are extraordinary strong and can withstand most chewing and biting activities. They are very resistible to high temperatures and, as a rule, don’t cause teeth hypersensitivity. Due to the fact that they are made of crystal, zirconium crowns are much stronger than porcelain and porcelain-fused-to-metal ones.
It is hard to differentiate a zirconia crown amongst natural teeth. In addition, zirconia crowns can be modified, according to the shape and size of teeth it will be placed alongside with.
Due to their biocompatible structure, zirconia crowns rarely provoke allergic reaction or body rejection.
- Less Tooth Structure Has To Be Removed
It is needed less layer of material to provide a super strength with zirconia crowns. As a consequence, less amount of your original tooth should be removed to fit the crown properly.
Zirconia Crowns Disadvantages
- It Is Hard To Notice a Decay Under the Crown
Although a zirconia crown is very durable, there can be tooth decay underneath, and the only possible way to distinguish it is to remove the crown.
- Too Tough
The extra strength of zirconia crowns has an opposite abrasive effect. They may negatively impact the tooth root and other neighboring teeth.
- Reasonable Price
Usually, zirconia crowns cost less than all-porcelain and almost the same as metal-porcelain crowns. Taking into account all the benefits they provide, zirconia crowns are very cost-effective.
It is difficult to suggest which type of crown is best for you. First of all, the decision depends on your budget and the type of dental problem you have. All-porcelain crowns have the best cosmetic appeal, but are less durable and the most expensive. They may be a good option for those patients who want to restore their front teeth. Porcelain-fused-to-metal and zirconia crowns are a good choice for molars’ restoration. Consult your dentist to choose the best treatment suitable for you.
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