Cosmetics Dentistry

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.

Find A Cosmetic Dentist to Fix Chipped Or Cracked Teeth With Dental Bonding

The term "dental bonding" describes a dental procedure that is used for various purposes. Tooth-colored composite resins are applied to teeth for cosmetic reasons, to repair cracked and chipped teeth, protect exposed tooth roots against decay, or restore decayed teeth.

What Are Some Of The Benefits Of Dental Bonding?

• For cosmetic purposes, dental bonding can dramatically improve your smile by closing gaps, masking stains caused by coffee, tea, tobacco, or medications as well as repairing cracks or chips resulting from accidents.
• These tooth-colored composites are well suited for protecting exposed tooth roots caused by gum recession. Tooth roots are covered by dentin that is more susceptible to decay. Tooth bonding helps prevent decay in this area as well as eliminate sensitivity to hot and cold resulting from tooth root exposure.
• Since composite materials can match the color of your own teeth, dental bonding is preferred for filling cavities in the front teeth or wherever else they may be visible.
• Dental bonding does not last as long as porcelain veneers, but it also is not as costly.

What's Involved In The Dental Bonding Procedure?

Usually the process is completed during one visit to your cosmetic dentist and doesn't require drilling or anesthesia. First, your tooth is prepared with an etching solution to help the dental bonding materials adhere.

Next, the resin is applied and contoured to the proper shape, then cured with either a special light or chemical treatment. The tooth is then polished for a natural-looking appearance. A follow-up appointment with your dentist may be recommended for additional polishing.

How Do I Care For My Teeth After Dental Bonding?

While the dental bonding materials are very durable, they still can chip and may need to be replaced periodically. Avoid excessive pressure such as chewing ice, hard candy or unpopped popcorn kernels. Dental bonding materials are susceptible to staining from tobacco, coffee, tea and berries. Alcohol and acid-containing foods such as vinegar, tomatoes or pineapple can damage the resin.

Regular dental check-ups are important for maintaining good dental health and natural-looking teeth.

By Danine M. Fresch, DDS

+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.