Porcelain veneers 12 jun 17

Porcelain Veneers

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a) With this procedure, the idea is that the enamel on the front side of your tooth is trimmed back about the same thickness as the veneer that will be placed. That way its overall thickness is not dramatically changed.

The front surface of the tooth is shave back about 1/50th of an inch.

While performing the trimming, your dentist will keep in mind some recognized guidelines as to the maximum amount of enamel that ideally can be removed, and try to stay within those limits. (Open the drop down box below for details.) b) If your tooth has some areas of decay, your dentist will trim more extensively in those locations so to remove it. c) At least in theory, porcelain veneers can be bonded over existing white (dental composite) fillings.

However, replacing them with new ones helps to insure the most secure bond possible.

Walls (2002) determined that bond strength is maximized if the new veneer is placed within 2 weeks of placement of the new filling. (Fabrication time for laboratory crafted veneers typically lies on the order of 2 weeks.) d) The outline form of the preparation will be given a shape where the edges of the veneer (where it meets your tooth) aren't easily seen or lie at a point where opposing teeth make contact. e) There's some debate as to whether the edge of a porcelain veneer should end right at the biting edge of its tooth or wrap over to its backside. (Smales [2004] determined 86% vs. 96% 7-year survival rates for veneers having these respective configurations.)

While this is an issue for your dentist to decide, if no temporary veneer is placed (see below) it will affect your experience. If the veneer wraps to the backside, the biting edge of your tooth will need to be trimmed slightly shorter and thus will look and feel different than before.

Exactly how much is trimmed away?

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e precise amount of tooth enamel that's shaved off will vary with each case but it can be as little as .5 to .7 millimeters. That's about twice the thickness of an eggshell and when compared to most other dental procedures it's a very small amount.

Trimming more.

In some cases, the dentist may decide to trim the tooth more, possibly on the order of 1.5 mm or so (about a 1/16th of an inch).

There are two issues at hand when this decision is made.

More aggressive tooth preparation means that a thicker veneer can be placed.

One that can both mask over the color of the tooth underneath yet still retain a high degree of restoration translucency (a characteristic that helps to create a very natural-looking appearance).

On the other hand, excessive preparation may expose regions of tooth dentin (the hard tooth tissue under enamel). If so, restoration longevity may be affected. (See drop down box above).

Will anesthetic be needed? •

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t can be possible to prepare teeth for veneers with out the use of an anesthetic (a dental "shot"). But you may find that you want it.

Some teeth and tooth tissues are naturally sensitive to cold sensations (like those created by the dentist's suction device or the water spray from their drill). And if the veneer's edges will extend below the gum line, those tissues will need to be manipulated and may be sensitive.

[Open the drop down box below for information no-drilling/no-shots veneer placement.]

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