Dentist Whitening

Do I Need an Extreme Makeover? Why Do My Dental Crowns Look Fake?

The most common complaint associated with crowns is that they look "opaque," "lifeless," and "fake" compared to natural teeth. Do you need an expensive dental makeover to solve the problem? No!

The appearance of a crown is affected by many factors, but ultimately, the final result is determined by how the crown reacts with light. Natural teeth have a high degree of translucency, which means a certain amount of light passes through the tooth. The result of this is that the tooth appears to have depth and vitality.

Porcelain Dental Crowns With a Metal Substructure

Traditionally, crowns are made of two materials:

• porcelain, which gives it the tooth-colored appearance
• metal substructure, which gives the crown its strength

Generally, it is this type of crown that can appear opaque. The reason for this is that while porcelain is very translucent and lets light travel easily through it, no light can pass through the underlying metal. In order to prevent the metal color from showing through the porcelain, which would make the crown seem dark or gray, the metal has to be "masked out" with an opaquing material. It is this masking or opaquing that can affect the final appearance, giving rise to the opaque or lifeless look.

Do All Porcelain Crowns With a Metal Substructure Appear Lifeless?

The answer is no. One thing that can be done to improve the appearance is to remove the metal margin that goes around the crown. By keeping the metal inside the crown and having porcelain at the junction between the crown and the tooth, the "black line" appearance at the gum line can be eliminated, thereby increasing the translucency in this area. It also is necessary to have an adequate thickness of porcelain over the metal substructure. If the metal that has been masked out is too close to the outer surface of the crown, the appearance of depth is lost. What it mostly comes down to, however, is the skill level and artistry of the technician who is making the crown. When done correctly, porcelain crowns with a metal substructure can give you the best of both worlds without the expense of an extreme makeover. They can be made to exactly match your other teeth while still appearing lifelike, and since there is metal in it, they have increased strength.

Dental Crowns

Today, there are dental crowns available that do not require a metal substructure and are made of only porcelain. Depending on the specific type, they get their strength either from the bond to the remaining tooth structure or from a dense tooth colored substructure. Since there is no metal, these types of dental crowns allow more light to pass through, which enables them to have more depth and vitality, much like natural teeth. So why isn't this type of crown used all the time? The main reason is that they are not as strong as crowns with a metal substructure. So, if a person grinds their teeth, these crowns have a greater risk of fracture. Another reason why an all-ceramic dental crown cannot be used in all situations is if the underlying tooth structure itself is dark. Very dark teeth are difficult to mask with these types of crowns because of their translucency. In these instances, the dark color may show through the crown. So, for situations where a lot of force will be placed on the teeth (such as grinding habits) or if a tooth is really dark, a well-made porcelain crown with a metal substructure may be a better restoration.

By Greggory Kinzer, DDS, MSD

+Jim Du Molin is a leading Internet search expert helping individuals and families connect with the right dentist in their area. Visit his author page.

Cosmetic Dentistry Corrections: Bleaching, Bonding and Dental Veneers

Maybe you've thought about cosmetic dentistry, but felt it was a little vain to consider it. Or the appearance of your teeth never bothered you much, because your dental health is pretty good.

Well, like it or not, "cosmetic" is more than skin deep. Most people form biases about others based on appearance. And, one of the critical factors in such judgments, is the teeth.

Because new cosmetic dental techniques give your dentist the means to fine-tune virtually anyone's teeth, most people need not go without the advantage of a white bright smile. Consider the options.

Teeth bleaching is a simple, inexpensive way to lighten stains and discoloration on certain teeth, front teeth are the more obvious candidates, without altering the natural structure of enamel. If you've had a root canal procedure, there may be some darkening. Some people suffer staining from medications, like tetracycline. And teeth naturally change as we age, or if we indulge in too much coffee, tea or smoking.

In any case, whiter teeth can be achieved with external or internal bleaching. The most common treatment involves cleaning the teeth thoroughly, applying a bleaching solution, and then curing it with a gentle heat source. The procedure takes just 30 to 45 minutes. After three to five sessions, you, and everyone else, will really notice the difference.

Cosmetic corrections for gaps, misshapen or chipped teeth are achieved with tooth bonding. New dental bonding materials can work wonders using a little art, and lots of science. Your cosmetic dentist can literally sculpt tooth form, or replace a gold crown with natural-colored restorations. The result is stronger than ever and makes a dramatic impact on your appearance.

Dental veneers are an option too, for teeth that need lengthening or reshaping. Veneers cover the front of a tooth entirely and work especially well where there is less stress on the teeth involved. Veneers are a durable, beautiful solution to dental imperfections.

+Jim Du Molin is a leading Internet search expert helping individuals and families connect with the right dentist in their area. Visit his author page.