Onlay vs Crown

Part of our philosophy is to do the best dentistry but in the most conservative way possible. When a crown is done, the entire circumference of the tooth needs to be trimmed down. Often time this part of the tooth is healthy. This is where an onlay may be a better option because this healthy portion is preserved and protected. When the entire circumference is trimmed down, the tooth is subjected to more trauma from which it sometimes does not recover. They often times are not done by dentists because they can be more difficult and require exquisite attention to detail.

We are happy to offer this superb treatment option.


A Porcelain Onlay is similar to a dental crown – but much more conservative - in that it is designed to restore a tooth that is broken down so much that it is beyond what a filling can do to fix it with predictably and longevity. If too much of the tooth is missing, the tooth could fracture. A porcelain onlay covers most or all of the chewing surface of the tooth and strengthens it so that it won't fracture.


How Porcelain Onlays Differ From Crowns A crown covers the entire chewing surface of the tooth and wraps around the entire tooth, all the way to the gum line. The porcelain onlay is more conservative. It covers only those parts of the tooth that are weak and it will not go down to the gumline. The healthy parts of the tooth are preserved and protected.


Advantages Of Porcelain Onlays One advantage of porcelain onlays are that they preserve more of the natural tooth structure. We believe if tooth structure is healthy, it is best to leave it alone if possible. A second advantage is that, since they don't go down to the gumline, there is no chance of them irritating the gum. Crowns can cause gum irritation and in some cases can even contribute to gum disease. Also, since they don't go down to the gumline, it is easier to keep the margin (that line where the porcelain onlay or crown ends and the tooth begins) clean. The margin is out in the open where you can easily brush it. Thus, porcelain onlays are less likely to get new tooth decay. Third, porcelain onlays, being made entirely of porcelain, are very esthetic. They look extremely natural.


Other Considerations Porcelain onlays require a great deal of time and expertise to place correctly. They require extensive training in cosmetic dentistry and in occlusion. Many dentists like to do crowns because it is easier and faster. But easier and faster is not always better. Second, porcelain onlays made entirely of newer, extremely strong and durable dental porcelain and are nearly as strong as gold crowns or older style porcelain-fused-tometal crowns.

Gregory J. Tarantola DDS

Tarantola

Dentistry

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