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Composite & Porcelain Tooth Veneers

 
 

What is it?

Veneers are very thin pieces of specially shaped porcelain or plastic that are glued over the front of your teeth (with little or no anesthesia required). They are the cure for teeth that are severely discolored or chipped, that have small holes or pits, that are misshapen or crooked, or that have unwanted or uneven spaces. Unlike crowns, veneers don't usually require removal of the tooth. Typically costing less than crowns, veneers won't stain. They are strong and very durable, lasting from ten to fifteen years.

This section of our cosmetic dentistry information site provides you with some background into dental veneers, both composite veneers and porcelain veneers. Dental veneers, sometimes called tooth veneers, can be used to correct both color and shape problems.

Teeth enamel discoloration can be caused by staining, aging, or chemical damage to teeth. Some of the more common causes of teeth discoloration are medications, coffee, tea or cigarettes.  People who drink significant amounts of cola soft drinks can experience similar staining.

Aside from staining, there are other factors that can affect the color of an individual's teeth. Genetics can play a role. Some people have naturally brighter enamel than others. Disease can also be a factor and certain medications can cause a discoloration of the teeth. If you suspect that there is an underlying medical cause for your teeth discoloration, be sure to inform your cosmetic dentist.

Veneers, porcelain or plastic, are placed over the front teeth to change color shape of the teeth. Veneers are ideal for teeth that are too small, too big, or have uneven surfaces. It is very common for people to have imperfect teeth, either oddly shaped teeth, chipped teeth, crooked teeth, teeth with small holes in them, or an inappropriate sized tooth or teeth that have an odd appearance. Veneers solve such irregularities and create a durable and pleasing smile.

What Types of Problems Do Dental Veneers Fix?

Veneers are routinely used to fix:

  • Teeth that are discolored – either because of root canal treatment; stains from tetracycline or other drugs, excessive fluoride or other causes; or the presence of large resin fillings that have discolored the tooth
  • Teeth that are worn down
  • Teeth that are chipped or broken
  • Teeth that are misaligned, uneven, or irregularly shaped (for example, have craters or bulges in them)
  • Teeth with gaps between them (to close the space between these teeth)

The Procedure

The procedure usually requires three trips to the dentist – one for a consultation and two to make and apply the veneers. One tooth or many teeth can simultaneously undergo the veneering process described below.

  • Diagnosis and treatment planning. This first step involves active participation between you and your dentist. Explain to your dentist the result that you are trying to achieve. During this appointment your dentist will examine your teeth to make sure dental veneers are appropriate for you and discuss what the procedure will involve and some of its limitations. He or she also may take X-rays and possibly make impressions of your mouth and teeth.
  • Preparation. To prepare a tooth for a veneer, your dentist will remove about ½ millimeter of enamel from the tooth surface, which is an amount nearly equal to the thickness of the veneer to be added to the tooth surface. Before trimming off the enamel, you and your dentist will decide the need for a local anesthetic to numb the area. Next, your dentist will make a model or impression of your tooth. This model is sent out to a dental laboratory, which in turn constructs your veneer. It usually takes 1 to 2 weeks for your dentist to receive the veneers back from the laboratory. For very unsightly teeth, temporary dental veneers can be placed for an additional cost.
  • Bonding . Before the dental veneer is permanently cemented to your tooth, your dentist will temporarily place it on your tooth to examine its fit and color. He or she will repeatedly remove and trim the veneer as needed to achieve the proper fit; the veneer color can be adjusted with the shade of cement to be used. Next, to prepare your tooth to receive the veneer, your tooth will be cleaned, polished and etched – which roughens the tooth to allow for a strong bonding process. A special cement is applied to the veneer and the veneer is then placed on your tooth. Once properly position on the tooth, your dentist will apply a special light beam to the dental veneer, which activates chemicals in the cement causing it to harden or cure very quickly. The final steps involve removing any excess cement, evaluating your bite and making any final adjustments in the veneer as necessary. Your dentist may ask you to return for a follow-up visit in a couple of weeks to check how your gums are responding to the presence of your veneer and to once again examine the veneer's placement.

What Are the Advantages of Dental Veneers?

Veneers offer the following advantages:

  • They provide a natural tooth appearance.
  • Gum tissue tolerates porcelain well.
  • Porcelain veneers are stain resistant.
  • The color of a porcelain veneer can be selected such that it makes dark teeth appear whiter.
  • Veneers offer a conservative approach to changing a tooth's color and shape-veneers generally don't require the extensive shaping prior to the procedure that crowns do, yet offer a stronger, more aesthetic alternative to bonding.

What Are the Disadvantages of Dental Veneers?

The downside to dental veneers include:

  • The process is not reversible.
  • Veneers are more costly than composite resin bonding.
  • Veneers are usually not repairable should they chip or crack.
  • Because enamel has been removed, your tooth may become more sensitive to hot and cold foods and beverages.
  • Veneers may not exactly match the color of your other teeth. Also, the veneer's color cannot be altered once in place. If you plan on whitening your teeth, you need to do so before getting veneers.
  • Though not likely, veneers can dislodge and fall off. To minimize the chance of this occurring, do not bite your nails; chew on pencils, ice, or other hard objects; or otherwise put pressure on your teeth.
  • Teeth with veneers can still experience decay, possibly necessitating full coverage of the tooth with a crown.
  • Veneers are not a good choice for individuals with unhealthy teeth (for example, those with decay or active periodontal disease), weakened teeth (as a result of decay, fracture, large dental fillings) or for those who have an inadequate amount of existing enamel on the tooth surface.
  • Individuals who clench and grind their teeth are poor candidates for porcelain veneers, as these activities can cause the veneers to crack or chip.

How Long Do Dental Veneers Last?

Veneers generally last between 5 and 10 years. After this time, the veneers would need to be replaced.

Do Dental Veneers Require Special Care?

No. Continue to follow good oral hygiene practices including brushing and flossing as you normally would. Even though porcelain veneers resist stains, your dentist may recommend that you avoid stain-causing foods and beverages (for example, coffee, tea or red wine).

Are There Alternatives to Dental Veneers?

Yes, bondings and crowns. Veneers offer a nice intermediate option. Veneers may be best suited for individuals who want to change the shape of their teeth more than just a little bit-as is done with bonding-but not enough to require a crown.

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