Posts for tag: crowns
Porcelain crowns have been used to restore problem teeth since at least the early 20th Century. Crown technology has gradually progressed from the early use of precious metals like gold or silver to more life-like porcelain crowns, often with a metal interior for added strength. Today, most crowns are all-porcelain, made with newer materials that not only look attractive but can endure under the pressures of daily chewing or biting.
While crowns are often part of restorations for missing teeth, they’re also commonly used to cap or fit over a viable tooth with structural or appearance problems. Here are 4 situations where a crown could improve a tooth’s form and function.
Traumatized teeth. A significant blow to the face or mouth could generate enough force to chip away or fracture a significant amount of structure from a tooth. If the root remains healthy and firmly attached within the jaw, however, a crown can replace the missing structure and restore the tooth’s function and appearance.
Root canal treatments. Root canal treatments remove infected or dead tissue within a tooth’s pulp chamber, its inner core, and the root canals. The procedure rescues the tooth but can in the process significantly alter the tooth’s structure and appearance. A crown not only restores the tooth but also provides added protection against further decay or tooth fracture.
Teeth with multiple fillings. We can effectively treat cavities caused by tooth decay by filling them. But with each filling we must remove more of the decayed structure and shape the cavity to accommodate the filling. After a number of times, a tooth may not have enough structure left to support another filling. If the tooth is still viable, a crown could solve this dilemma.
Abnormally developed teeth. Teeth sometimes don’t erupt in the jaw as they should and may be only partly visible. The tooth not only looks out of place but it can’t fully function like a normal tooth. Capping an abnormally developed tooth with a crown will help normalize it and allow it to blend in with surrounding teeth.
If you would like more information on crown restorations, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Crowns & Bridgework.”
If you're in need of a crown to cover a damaged tooth, you have a lot of options. But before you choose, you need to know what you want. Would you be happy with an affordable, well-fitting crown that holds up well and allows you to chew comfortably? Or are you interested in a more expensive one that also provides the most attractive result?
Crowns have been a mainstay in dentistry for generations. The first were made of metals like gold or silver — durable and effective but not very attractive.
In time, a ceramic material known as dental porcelain began to make its appearance in crowns. Dental porcelain could be fashioned to resemble the color and texture of natural teeth, but it had a significant drawback: it could be brittle and subject to shattering under chewing pressure.
This problem was somewhat addressed with the innovation of a crown with a metal substructure fused with an outer layer of porcelain. These porcelain-fused-to-metal (PFM) crowns combined the best advantages of both materials: strength and life-likeness. Up until around the mid-2000s, PFM made up over 80% of crowns.
But later porcelains continued to improve in strength, beginning in 1993 with the introduction of a Lucite-reinforced material. Newer formulations like lithium disilicate or zirconium oxide (now considered the strongest porcelain) have made all-porcelain crowns a viable option. Today, an estimated 60% of new crowns are all-porcelain.
From an appearance standpoint, all-porcelain crowns achieve the best results. The most realistic crown can be costly — not because of the material but the level of artistry required. A skilled dental technician will spend several hours, including brushing on as many as fifteen coats of liquid porcelain to the crown, to achieve the most life-like outcome. Your insurance plan, if you have one, will most likely not pay as high a percentage for that type of crown.
In the end, it's your decision as to what type of crown you wish to have. We'll help you weigh your options and decide what's best for you and your budget.
If your tooth sustains damage that compromises its structure — typically through decay or trauma — you have several options depending on the extent of the damage: One of them is a crown. This method saves the tooth and its root and completely conceals the visible portion of the tooth, or crown, under a natural-looking cap made to mimic as closely as possible the size, shape and color of the original tooth.
Crowns also hide imperfections in the original tooth like discoloration, chipping, fractures, excessive wear (from bruxism, or tooth grinding, for example), or abnormalities in the way the tooth formed. And they’re used following root canal treatments, which treat infected pulp at the center (canal) of a tooth root by removing the pulp and replacing it with an inert, rubber-like material.
Saving the natural tooth has long been the goal of dentistry because normal micromovements of the tooth root, which is suspended in its jawbone socket by elastic ligaments, stimulate the surrounding bone to rejuvenate. Without that stimulation, the bone continues to lose old cells, but no longer replaces them. Crowns are also designed to restore tooth function.
The function and location of the damaged tooth can determine what material the crown will be made of. If the damaged tooth is clearly visible when you smile, porcelain, the most realistic-looking material, is almost always used. If the tooth receives significant bite force, a stronger material is considered — either, a gold/porcelain combination, or a high-strength ceramic. If you are restoring a second molar, an all-gold crown may be considered.
With the advent of dental implants, saving a damaged tooth is no longer the only option for preserving the health of the bone surrounding the tooth root. The implant — a tiny biocompatible, titanium screw-like artificial root — is placed in the jawbone and is then capped with a natural-looking crown of course!
If you would like more information about dental 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 article “Crowns & Bridgework.”
In the realm of restorative dentistry, dental implants are king. A dental implant can replace a tooth with a permanent, life-like restoration with a solid reputation for durability.
Implants are also known for one other quality — variety. Not all implants are alike, and they have varied applications for use. Available in various shapes and sizes, they can be used for a single tooth or as part of a multiple tooth bridge or overdenture. And while their basic architecture is the same, you also have two options for how the permanent crown (the visible tooth portion) attaches to the implant: screwed or cemented.
A screw attachment can securely fasten a crown to an implant without the need for cement; it also allows for easy removal for repair or replacement should the crown become damaged or worn. On the other hand, it could pose a cosmetic problem — even though the access hole for the screw may be covered with a tooth-colored filling, it could still be distinguishable from the rest of the crown. There’s also a slight risk of the crown chipping around the access hole.
A crown cemented to the implant won’t have this cosmetic issue with an access hole, and will look just like a natural tooth. But unlike a screwed crown, removing a cemented crown can be more difficult. The cement may also cause gum inflammation and potential bone loss in sensitive patients.
The condition of your mouth, the type of implant you’re receiving and other circumstances will all factor into determining which method is best for you. If we’re “immediately loading” the crown (meaning we’re affixing a temporary crown to the implant immediately after placement in the jaw), then the screw method may be more advantageous. Aesthetically speaking, though, a cemented crown may be a better option in terms of final smile appearance.
But whichever method is used, you’ll still benefit from what implants do best — help you regain the function lost from a missing tooth and change your smile for the better.
If you would like more information on your options with dental implants, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “How Crowns Attach to Implants.”
Dental crowns are excellent tools that we use to restore functionality, color and/or beauty to teeth and your smile. And while many people may have heard of them, often times there are many questions surrounding the process, costs and their maintenance. This is why we have put together this list of some of the questions we are commonly asked on this subject. Our goal is to provide you with straightforward answers so that you have a clearer understanding of the treatment and are comfortable making the decision to go forward with these excellent tooth restorations should they ever be required.
What Is A Crown?
A dental crown is a tooth-shaped “cap” or cover that a dentist places over a tooth that is badly damaged from trauma or decay in order to restore its color, strength, size and functionality. They are also used for cosmetic reasons to improve discolored or misshapen teeth.
Why Can The Cost Of Crowns Vary?
The reason the cost of a crown can vary greatly, even from dentist to dentist is quite simple. The most beautiful crowns require the artistry and years of experience of a team of dental professionals; your dentist and the laboratory technicians that handcraft crowns. To meet higher expectations of some individuals requires more experience, artistry and skill. And great art just tends to cost more. A customized temporary crown may even be used as a preview to see what a final crown will look like. Another critical factor is the choice of materials used. For example, while all porcelain crowns are made from high-quality ceramic (glass) material, they are not equal. It is therefore more expensive in terms of time, skill and expertise to produce the most natural looking results.
How Long Will A Crown Last?
Most dentists expect a crown to last at least 7-10 years with normal wear and proper maintenance. However, depending on the materials used and location of the tooth, they can last upwards of 50 years or more. For example, a gold crown has the longest lifespan because gold is such a durable material that has little to no negative impact on surrounding teeth. On the other hand, porcelain produces a completely natural look but can cause wear to adjacent teeth.
What Materials Are Most Often Used For Crowns?
The three most common materials used to make crowns are as follows:
- Porcelain-Fused-to Metal (PFM)
- All porcelain