Dental Crowns and Bridges
Simply stated, a dental crown is a tooth cap placed to cover the tooth to restore its shape, its size and its strength. A bridge is a combination of crowns.
A dental crown may be advised to:
- Protect a weak tooth (for instance, from decay) from breaking especially after an RCT
- Restore an already broken tooth or a tooth that has been severely worn down
- Cover and support a tooth with a large filling when there isn’t a lot of tooth left
- Hold a dental bridge in place
- Cover misshaped or severely discolored teeth
- Over a dental implant
Dental bridges are meant to replace missing teeth by “bridging” the gap between two remaining teeth. This involves creation of a pontic, or false tooths with a dental crown on either side. The crowns are fitted over the remaining teeth to hold the false tooth in place.
When there are only teeth on one side of the gap, cantilever bridges may be given. cantilever bridges consist of two side-by-side crowns and only one is connected to the pontic.
A fixed bridge helps to
- Replace missing tooth/teeth.
- Helps balance a normal bite.
- Helps prevent undesirable stress on the dental ridge.
- Prevents over-eruption of the opposing teeth.
- Prevents drift and tilt of adjacent teeth.
- Prevents tooth decay in adjacent drifted teeth.
- Retards onset of gum diseases
To design a bridge, the dentist must reshape the teeth to make room for the crowns. The dentist then makes a mold of the teeth. This mold is then sent off to a laboratory, where the actual crowns and bridge are made.
These crowns and bridges require a bit of extra care in terms of oral hygiene. With such care, bridges can last up to several years. However, improper or infrequent brushing and flossing, irregular dental visits, and excessive sugar and starch intake can all bring untimely damage to the bridge.
All Metals and Gold Crowns
Metals – These could include gold alloy and other base metal alloys. Metal dental crowns are by far the toughest. They can withstand daily wear and tear and they rarely break or chip.
A gold crown has some very distinct characteristics that make it a good choice
1.Gold Fits better: A well-cast gold crown fits considerably better then other materials. Because it fits better, it lasts longer! The bacteria we all have in our mouths have less access to the micro-margins.
2.Gold Is Strong And Flexible: Gold expands and contracts at the same rate as your natural tooth. This protects the gold crown from chipping, cracking or breaking; which can be a problem with other less versatile materials.
3.Gold Is Safe And Comfortable: Gold doesn’t just look good–it feels good–because gold is remarkably compatible with the inside of your mouth. With many other metals, the likelihood of sensitivity or an allergic reaction is a significant risk for the patient. But not with gold.
Metal – Ceramic Crowns
Metal-Porcelain – They combine the strength of the metal along with the esthetics of porcelain. These are probably the most used crowns nowadays and they are really tough.
Metal – Free Ceramic
All Ceramic Crowns and Bridges (Metal Free ceramic crowns)
These are the best looking crowns, and probably the best value for your money as far as esthetics are concerned. Contrary to what might appear, these materials are extremely strong and fracture tough. The material can well sustain the masticatory forces, providing durable crowns and bridges with beautiful esthetic results. They can be conveniently and reliably used in any part of the mouth. These are also the preferred material of choice in patients with metal allergies. Metal free restorations are produced with the latest CAD/CAM technology ensuring precision of fit. Some well known Metal free systems used are
No PFM ‘gray lines’ ever With metal ceramic, soft tissue around the tooth can recede, over time, revealing the metal underneath as ugly gray lines. This simply can’t happen with Procera® because they are metal-free.
Bio-compatible All-ceramic solutions are completely tissue-friendly. Your crown, bridge or veneer (laminate) integrates beautifully with its surroundings, encouraging gum to grow back up to the tooth, as it would naturally. And because they are bio-compatible, there are no allergic reactions, no sensitivity to temperature and no impact on taste.
Perfect fit Solutions are precision-engineered in state of the art production facilities. And they fit so well you will forget they are there.
Perfect match Uses a unique system to subtly match your real tooth’s color and translucency so they’re almost impossible to tell apart from real teeth.