Wednesday, March 24, 2010

All-Porcelain Crowns

New technology has made it possible for tooth-colored crowns to be all porcelain crowns. Previously, porcelain crowns had to be built around a metal core. This was the only way to make the crown strong enough to withstand biting and chewing forces. The problem with this was that the metal core created a dark blue line at the edge of many crowns.

This has all changed, thanks to breakthroughs in adhesives and the development of stronger porcelain materials that allow us to make crowns completely out of porcelain. This new material is completely translucent and almost impossible to distinguish from natural teeth.

All porcelain crowns eliminate the problem of the dark line at the edge of the gum. This allows us to place the edge of the crown above the gum line, which in turn is much better for your teeth and gums.

An all porcelain crown is usually the best corrective, cosmetic treatment option for you if any of the following is the case:

· Your tooth has experienced significant decay. There simply is not enough tooth structure remaining to support a cosmetic dental filling.
· A large part of the tooth has fractured and cannot be rebuilt using traditional composite resins.
· You have a large cavity and decide to go for the additional protection of a crown to prevent further tooth decay.
· You have had a dental implant, and an all porcelain crown provides you with a natural-looking tooth replacement.
· After a root canal, we may recommend a crown to strengthen your tooth.
· If you suffer from bruxism and have a poor diet, the acid erosion may have eroded your teeth to the point that all porcelain crowns are the only way to restore them.
· If any of the above conditions have made you self-conscious when you smile, all porcelain crowns can improve your appearance and restore your self confidence.

These cosmetic tooth restorations have to be custom made in a dental laboratory. That is why it takes more than one trip to our office to get them.

During the first consultation, we remove any decay and reshape the tooth surface. This is done with a special drill under the influence of local anesthesia that will make the procedure painless. Once we have reshaped the tooth to accommodate a dental crown, we then take impressions of your teeth using special dental putty. We send this mold of your mouth over to a dental lab, when then uses it as a guide to make your new all porcelain crowns. In the meantime, we fit your tooth or teeth with a temporary crown to protect them while we wait on the lab to finish its work.

When your crown is ready, we call you back to the office and remove the temporaries. We use a special etching solution to roughen the outer enamel of your teeth. This helps the crown better bond to its surface with dental cement. After trial fitting the crown to make sure all is in order, we permanently cement it in place.

All porcelain crowns should last at least 10 years if you take care of them properly.

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