Posts for tag: crown
A crown is a common type of dental restoration that has been available, in different forms, for a long while. When properly done, it may last for decades — and if desired, it can be made to match the shade of the natural teeth so well that it's nearly impossible to tell them apart. Some recent technological innovations may offer patients who need this treatment even more choices. To begin learning about dental crowns, let's start with five facts everyone should know.
Crowns are a type of restoration that can solve many dental problems.
There are many factors that may cause the structure of a tooth to become compromised. It can be weakened by grinding or chipping, gradually removed by repeated dental fillings, or suddenly broken by trauma. Sometimes, a more conservative treatment (like inlays or veneers) may be enough to take care of the problem. When it isn't, the missing tooth structure can be replaced by a crown.
Crowns replicate the form and function of natural teeth.
Because they must fit into your mouth perfectly and match your bite exactly, each crown is an individually-crafted item, made just for you. That means the form of a crown must look just like the tooth it replaces — before it was damaged. And, especially if it's for a front tooth, a crown is often carefully designed to match the particular shade of your teeth. If you are unhappy about the color of your other front teeth, tooth whitening should be done first before your new crown is created to get the best results possible.
Crowns can be made of different materials.
For over a hundred years, crowns have been made of gold. While this extremely long-lasting material remains popular, its use has been declining recently due to aesthetic factors. Two tooth-colored alternatives are all-porcelain and porcelain-fused-to-metal crowns. The exact shade and luster of these substances can be made to closely simulate the natural teeth. Each has advantages and disadvantages in particular situations but we will be happy to make recommendations as to what is in your best interests.
New technologies are changing the way crowns are prepared.
Advances in the field of materials science have led to crowns being fabricated from more durable high-tech substances, like ceramics made of zirconium dioxide. And the availability of small-scale computer-aided design and manufacturing technologies means that in some situations, it's possible for a crown to be fabricated right in the dental office, in minutes. Undoubtedly, these technologies will continue to improve in the future.
Delivering a quality crown is a blend of science and art.
No matter how high-tech the process becomes, producing a fully functional, long lasting and natural-looking crown remains a blend of aesthetics and science, seasoned with a healthy dose of clinical experience. It's also a team effort involving a skillful dentist, a talented dental laboratory technician and a knowledgeable patient — you.
If you would like more information about crowns, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine articles “Porcelain Crowns & Veneers,” “Gold or Porcelain Crowns,” and “Creating In-Office Dental Restorations With Computers.”
Like the ones worn by kings and queens of old, dental crowns were traditionally made of that most “royal” of metals: solid gold. This style of crown is still going strong after over a hundred years, but recent advances may have stolen some of its luster. Want to learn more about the different materials from which crowns can be made? Read on!
Gold crowns have stood the test of time, and many still consider them the best. Gold is one of the earliest materials to be successfully used for making crowns, and when properly done, it also lasts the longest: over 50 years in some cases. For these and other reasons, many dentists prefer to get gold restorations for their own teeth.
But in recent years, the use of gold crowns has been in decline — especially when the crown is for one of the front teeth. Why? In one word: aesthetics! With the advent of porcelain and porcelain-fused-to-metal (PFM) crowns, many people have opted to go with these more natural-colored tooth restorations.
PFM restorations have been in use for some four decades. They combine the strength of precious metals (gold or platinum) with the appeal of a finish that appears more like a natural tooth. With proper care, a PFM restoration may have a functional life of around 20 years.
With their pearly luster and semi-translucent sheen, all-porcelain crowns have an incredibly lifelike appearance. Porcelain itself is a glass-like material, which is specially modified to add strength when it's used in dentistry. In the past, there were some problems with brittleness in all-porcelain restorations. Today, newer formulations have been designed to avoid these issues.
High-tech materials that have recently become available to dentistry include a polycrystalline ceramic substance called zirconium dioxide or “Zirconia.” It shows great promise in terms of aesthetics and strength, and is the subject of much ongoing research. One day, it may replace other materials and become the new “gold standard” of crowns.
Depending on the particular situation, one or more of these materials may be considered for your crown.
If you would like more information about crowns, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine articles “Porcelain Crowns & Veneers” and “Gold or Porcelain Crowns?”
You've taken good care of your teeth all your life, with brushing, flossing and regular visits to the dentist. But chances are that someday (or maybe even now) you may be told that you need a restoration on one or more of your teeth. Oftentimes, that means a crown.
But what exactly is a crown, and why is it used? We're glad you asked!
In the course of time, natural teeth may need to be restored for a variety of reasons. As we age, our teeth may eventually become chipped or discolored. They can become weak and prone to cracking, or actually break due to tooth decay or trauma. Treating tooth decay may require a filling so large that there isn't much tooth surface left. Or, getting a dental implant (which replaces the roots of the tooth) means that you will need a replacement for the visible part of the tooth as well.
A crown (sometimes called a cap) is a common type of dental restoration. It's a way of replacing the tooth structure, in part or in full. A crown can cover the whole visible portion of the tooth, right down to the gum line. Since it's custom-made just for you, it is designed to fit in and function just like the rest of your teeth. And because it's composed of an extremely hard substance (gold, porcelain, ceramic, or some combination of these materials) it's made to last for a long time.
If a dental examination shows that you need a crown, here's how the process works: First, any decay is removed from the affected tooth, and it is prepared for restoration. Then, a 3-D replica of the tooth (and adjacent teeth) is made. This model is used to create a crown that matches your natural teeth. If you're getting a tooth-colored crown, the exact shade of the adjacent teeth will be duplicated as closely as possible.
After the crown has been fabricated, the tooth is made ready to receive the restoration. The crown is adjusted to mesh perfectly with the prepared tooth, and to function with the whole bite. Then, it is cemented or bonded into place. When it's all done, it can be hard to tell that you had any dental work done at all.
If you're thinking that it's a challenge to make an “artificial” tooth fit in with your natural teeth, you're right — but we do it all the time! Creating a superb-looking restoration is a blend of science and art. It takes a careful eye to match tooth colors and to adjust biting surfaces and spacing for a perfect fit. But when experienced dental professionals and patients work together, the results can make us both proud of the achievement.
If you would like more information about crowns, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine articles “Porcelain Crowns & Veneers” and “Gold or Porcelain Crowns.”