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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.

See Before and After Pictures of Cosmetic Dentistry :

Why Is a Dental Crown Needed?

A dental crown may be needed in the following situations:

To protect a weak tooth (root canal treated 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 tooth left
To hold a dental bridge in place
To cover misshaped or severely discolored teeth
To cover a dental implant
To make a cosmetic modification

Type of Dental Crowns :

Root canal treatment consists of several steps that take place over several office visits, depending on the situation. These steps are:

Temporary crowns: these crowns are acrylic or metal alloy .They cover the tooth while a permanent crown is being created in our in-house dental lab.
Stainless steel crowns: These are prefabricated crowns that are used on permanent and baby teeth. Stainless steel crowns are generally used for children's teeth because they are cost-effective and can be put on in one visit. The crown covers the entire tooth and protects it from further decay. When the primary tooth comes out to make room for the permanent tooth, the crown comes out naturally with it
Metal crowns : These crowns can be made from cast gold alloys or cast silver palladium alloys. With a metal crown, less tooth structure needs to be removed and the wear on opposing teeth is minimal. Metal crowns withstand biting and chewing well and last the longest. They also 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 crowns: These dental crowns contain an inner metal casting with porcelain baked over it. They look natural and can be very aesthetic. Occasionally they may chip and show the underlying metal. Next to all-ceramic crowns, porcelain-fused-to-metal crowns look most like normal teeth
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. All-ceramic crowns are a good choice for front teeth.

Dental Bridge

Missing a tooth and having a gap in between your teeth isn’t just unsightly, it can cause other problems. Talking and chewing may be difficult. Teeth adjacent to the space will eventually begin to shift into the empty space which will affect your bite, may lead to gum disease and possibly even jaw joint disorders like temporomandibular joint (TMJ) issues.

One way to take care of a gap caused by a missing tooth is with a dental bridge. There are removable dental bridges, also called partial dentures, that can be removed and cleaned like dentures, and there are permanent dental bridges, sometimes called fixed partial dentures.

A dental bridge is called a bridge because it literally bridges the gap where one or more teeth used to be. Bridges are cemented to the teeth adjacent to the empty space. The adjacent teeth, called abutments, serve as the anchors for the bridge. The adjacent teeth are trimmed down and capped with a crown, and then a replacement tooth, called a pontic, is attached to those crowns to form the bridge. The unit is securely cemented to your teeth and your smile and ability to chew food is improved.

Dental bridges help you:

Restore the ability to chew and speak properly
Maintain the shape of your face, preventing lip or face collapse
Distribute the forces in your bite to alleviate stress on other teeth

There are several types of dental bridges. Each bridge is made with different materials and is better suited for certain areas of the mouth and for certain types of situations. Your Dental Associates dentist will recommend the best type of dental bridge based on your individual circumstance.

Type of dental bridges :

Traditional bridges: these are the most common dental bridges. They involve creating a crown for the tooth (abutment) on either side of the missing tooth, with a replacement tooth (pontic) in between. Traditional bridges are made of either porcelain fused to metal or ceramic.
Cantilever bridges: these bridges are used when the replacement tooth can only be supported from one side. A cantilever dental bridge is typically used when the space is small and the stresses will be minimal
Maryland bonded bridges : this dental bridge is most commonly used to bridge front teeth together. The Maryland bridge technique, named after the University of Maryland Dental School where it was developed, uses metal or resin “wings” on each side of the bridge that are bonded to the existing teeth. A Maryland bonded bridge is also called a resin-bonded bridge. One of its big advantages is that it requires very little shaping, if any, of the anchor teeth.
Implant-supported dental bridges these bridges are recommended if you’re missing more than one tooth. This technique involves the placement of two or more dental implants with space between them. These implants serve as the abutments (anchors) for the permanently cemented bridgework. Because dental implants simulate tooth roots, they maintain the integrity of the jaw bone and provide a solid support for the bridge.

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