Dental Crown & Bridge Richmond VA

Dental Crowns Explained

A dental crown is a tooth-shaped “cap” that is placed over a tooth — to cover the tooth to restore its shape and size, strength, and improve its appearance.

The crowns, when cemented into place, fully encase the entire visible portion of a tooth that lies at and above the gum line.

A dental crown may be needed in the following situations:

  • To protect a weak tooth (for instance, from decay) from breaking or to hold together parts of a cracked tooth
  • To restore an already broken tooth or a tooth that has been severely worn down

To cover and support a tooth with a large filling when there isn’t a lot of teeth left

  • To hold a dental bridge in place
  • To cover misshaped or severely discolored tooth
  • To cover a dental implant
  • To make a cosmetic modification

Types of crowns available:

Permanent crowns can be made from stainless steel, all metal (such as gold or another alloy), porcelain-fused-to-metal, all resin, or all ceramic.

Stainless steel crowns are prefabricated crowns that are used on permanent teeth primarily as a temporary measure. The crown protects the tooth or filling while a permanent crown is made from another material. For children, a stainless steel crown is commonly used to fit over a primary tooth that’s been prepared to accept it. The crown covers the entire tooth and protects it from further decay. When the primary tooth falls out to make room for the permanent tooth, the crown comes with it. In general, stainless steel crowns are used for children’s teeth because they don’t require multiple dental visits to put in place and so are more cost- effective than custom-made crowns or prophylactic dental care needed to protect a tooth without a crown.

metal dental crownsMetal crowns. Metals used in crowns include base-metal alloys. Compared with other crown types, less tooth structure needs to be removed with metal crowns, and tooth wear to opposing teeth is kept to a minimum. Metal crowns withstand biting and chewing forces well and probably last the longest in terms of wear. Also, metal crowns rarely chip or break. The metallic color is the main drawback. Metal crowns are a good choice for out-of-sight molars.

Porcelain-fused-to-metal dental crowns can be color matched to your adjacent teeth (unlike the metallic crowns). However, more wear to the opposing teeth occurs with this crown type compared with metal or resin crowns. The crown’s porcelain portion can also chip or break off. When compared to all-ceramic crowns, porcelain-fused-to-metal crowns look most like normal teeth. However, sometimes the metal underlying the crown’s porcelain can show through as a dark line, especially at the gum line and even more so if your gums recede. These crowns can be a good choice for front or back teeth.

All-resin dental crowns are less expensive than other crown types. However, they wear down over time and are more prone to fractures than porcelain-fused-to-metal crowns.

All-ceramic or all-porcelain dental crowns provide better natural color match than any other crown type and may be more suitable for people with metal allergies. However, they are not as strong as porcelain-fused-to-metal crowns and they wear down opposing teeth a little more than metal or resin crowns. All-ceramic crowns are a good choice for front teeth.

Temporary versus permanent. Temporary crowns can be made in your dentist’s office, whereas permanent crowns are made in a dental laboratory. Temporary crowns are made of acrylic or stainless steel and can be used as a temporary restoration until a permanent crown is constructed by a lab.

Zirconia or milled crowns are constructed from a digital image of the underlying and opposing teeth. They can be produced either in a dental office or in a dental lab. Milled crowns are convenient as they only require one visit with no need for a temporary crown or an impression.

Dental Bridges West End Patterson Richmond VA

Bridges are also called Fixed Partial Dentures

Fixed partial dentures (FPD) as the name implies cannot be removed by the patient. An example of an FPD is a bridge on two abutment teeth over an interstitial edentulous space. Bridges are made of the same materials as crowns.

Dental Inlay / Onlay West End Glen Allen VA

Inlays and Onlays are fixed restorations that are made to the rear teeth that have a mild to moderate amount of decay or loss of tooth structure.

An inlay is usually smaller than an onlay and involves using dental impressions to fabricate typically a porcelain (tooth colored) or gold as a restorative material. After the impression is taken and cast prepared, a dental technician prepares the inlay, which is then fitted and cemented into a prepared tooth cavity

An onlay is different from an inlay only in that it covers the cusp or point on the chewing surface of the tooth. Sometimes it extends and will be described as a ¾ crown.

Both inlays and onlays involve fabricating the restoration outside of the mouth by a dental laboratory, rather than placing a soft filling into the prepared tooth before the material hardens. The time, material and extra effort set inlays and onlays apart from the more economical conventional fillings.

An advantage of using inlays / onlays as opposed to conventional fillings is that the tooth-to-restoration margin may be finished and polished to a very fine line of contact to minimize recurrent decay. Direct composite filling materials shrink slightly in volume during curing/hardening process. This can result in shrinkage stress, marginal gaps, and eventual failure. We are located in Richmond’s West End near Patterson and Three Chopt slightly North of Tuckahoe VA

12/26/2015 by Ursula Klostermyer Ph.D. DDS

Before & After Dental Crown & Dental Bridge