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Restorative Treatment: Porcelain Crowns
An All-Porcelain or Porcelain Fused to Metal Crown (PFM) is typically a two visit procedure. Preparation for a crown is initiated by tooth reduction of approximately 1-2 mm on all sides of the tooth, with special care taken to remove only enough tooth structure to accomplish the objective of fitting a crown, which requires1-2.5 mm of occlussal clearance. If there is decay noted, it will be removed and the subsequent defect restored at this time so as not to allow the decay to undermine the new crown. Once the preparation has been completed and tooth debridement carefully completed, a final polyvinylsiloxane impression of the tooth is taken. The impressions we create here are multi-dimensional in that they capture not only the tooth to be crowned, but also the opposing dentition and neighboring teeth and tissue. The impression tray is so precise, it is totally patient friendly even for those with the most elevated gag reflex. The tooth is next temporized with a custom fitted temporary crown that will serve to protect the tooth for approximately two weeks until your new crown is fabricated by a dental laboratory. The temporary crown is temporarily cemented utilizing an anodyne adhesive containing Calcium Hydroxide which soothes and protects the tooth. The occlusion is then checked be sure the bite is both functionally and anatomically correct. At the second appointment, the temporary crown will be removed and the new crown seated into position and adjusted. Once the occlusion has been carefully checked for prematurities and the bite matched to the strike pattern of the original tooth, the restoration is cemented into place. Depending on the underlying amount of natural tooth structure, composite core or cast core, a specific cement will be chosen to maximize the crowns retention to that underlying infrastructure. All excess cement will be removed with the patient advised not to eat or chew on the crown for a minimum of one hour. Cementation of All-Porcelain crowns will follow the protocol utilized for porcelain inlays and onlays, namely, the restoration is cemented into place utilizing a new and uniquely designed bonding cement, which in effect fuses the restoration to the tooth, creating a strong and durable tooth and restoration. The cement is typically light cured. While the patient may eat immediately, in the case of anterior crown placement, we still recommend that the patient refrain from eating for up to one hour to allow proper final set of the cement. Our Restorative Treatment services include:
Click on one of the linked procedures to read more about our specific services.
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A Crown is a dental restoration that covers and encompasses the entire tooth surface readily visible above the gumline. The Crown, (also commonly called a Cap) restores the tooth to its original size, form and function, or can also be used to close spaces or gaps or for enhanced aesthetics. Crowns are quite often the treatment prescribed in the event of a broken or fractured tooth or filling, advanced decay, or after a tooth has undergone root canal treatment. The tooth in question would not have been restorable via conventional filling procedures or materials. The crown, once placed, provides total cuspal coverage and protects the underlying tooth structure. The crown also strengthens the tooth. Although there are several different materials from which crowns are fabricated (Stainless steel, Gold, Semi-precious metals, Non-precious metals) porcelain substrate and porcelain fused to metal crowns are the most popular today because they are tooth colored and most closely resemble your natural teeth. They are extremely durable, and will last many, many years. However, like all dental restorations, crowns also suffer material fatigue from wear, and will ultimately also require replacement. Over 
the last decade, with the dramatic interest in cosmetic dentistry, all-porcelain crowns have continued evolving both in strength and in beauty. The new translucency and life-like appearance of this latest generation of All-Porcelain Crowns have made them the treatment of choice for any patient requiring crowns on the anterior (front) teeth.