Crowns & Bridgework
- Created in Cosmetic & General Dentistry
Dentistry is an art as well as a science; dental crowns offer a perfect example of this. A dental crown or “cap” is a covering that fits over a damaged, decayed or unattractive tooth. It can even replace a tooth entirely as part of dental bridgework.
A crown completely covers a tooth above the gum line. This is in contrast to a dental veneer, which only covers a tooth's front surface and needs natural tooth structure to support it. Therefore, if a tooth is missing a significant amount of structure above the gum line, a crown would be the restoration of choice.
Crowns strengthen damaged teeth, allowing them to function normally again. When crafted from today's high-tech porcelains (dental ceramics), crowns are virtually indistinguishable from natural teeth. They can even be designed to improve upon a tooth's original appearance.
There are other materials besides porcelain that we can use to make dental crowns, depending on what qualities are most important. For durability, cast gold can't be beat. However, this is not always the most aesthetic choice — especially towards the front of the mouth. Other possibilities include porcelain-fused-to-metal crowns (PFM), which have a metal interior for strength and a porcelain exterior for a more natural appearance, and all-porcelain crowns with zirconia, representing the strongest ceramic. We would be happy to discuss the pros and cons of these various options with you.
Crowning or Capping a Tooth
Crowning or capping a tooth will usually take two to three visits. At the first visit, your tooth is prepared to receive its new crown. First, it is shaped to fit inside the new covering. This will involve some drilling to give the tooth a uniform shape. The tooth and the surrounding area will be numbed beforehand. If there is very little tooth structure left to begin with, the tooth may have to be built up with filling material, rather than filed down, to support the crown.
After the tooth is prepared, impressions of your teeth are taken, either digitally or with reliable, putty-like impression materials, and sent to the dental laboratory. There, the impressions will be used to make models of your teeth for the creation of a crown. The models will serve as guides to the highly skilled lab technicians, who will ensure that your new crown is designed to enhance your smile and function well within your bite.
Before you leave the office, a temporary crown will be attached to your tooth to protect it until the permanent crown is ready. At the second visit, your permanent crown will be attached to your tooth with either a resin that hardens when exposed to a special light source, or a type of permanent cement.
Creating a Bridge
with bridgework, which spans the space of the missing tooth and requires at least three crowns. Two of those crowns will be placed over healthy teeth on either side of the missing tooth; these healthy teeth are referred to as abutment teeth. The two crowned abutment teeth become supports for a third crown placed in between them; that third crown is referred to as a pontic. If more than one tooth is missing, more crowns will be needed to bridge the gap in between the abutment teeth.
The number of abutment teeth necessary to replace missing teeth is influenced by the number of missing teeth, the size and length of the abutment tooth roots, the amount of bone support each abutment tooth has, as well as where in the mouth the missing tooth is located. For example, if you have three missing teeth, four abutment teeth may be necessary, thereby creating a seven-tooth bridge. Engineering and designing of the bridge requires an understanding of how to replace teeth, as well as the biology of the supporting gum and bone tissue.
Caring for Your Crowns & Bridgework
Crowns and bridgework require the same conscientious care as your natural teeth. Be sure to brush and floss between all of your teeth — restored and natural — every day to reduce the buildup of dental plaque. When you have crowns, it is even more important to maintain your regular schedule of cleanings at the dental office. Avoid using your teeth as tools (to open packages, for example). If you have a grinding habit, wearing a nightguard would be a good idea to protect your teeth and your investment.
- Created in Cosmetic & General Dentistry
What makes a smile beautiful? That's a complex question, but some qualities of a lovely smile are immediately identifiable: good tooth color, shape and alignment are a few of the most important ones. If your teeth could use improvement in any of these categories, porcelain veneers could be just what you're looking for.
You may already know that a veneer is a thin covering over another surface. In dentistry, a veneer is a wafer-thin layer of super-strong porcelain that convincingly substitutes for natural tooth enamel. When bonded to your teeth, veneers can create a natural-looking, beautiful new surface. That's because dental porcelain, like natural tooth enamel, is translucent and tough. But it doesn't stain like tooth enamel does.
Recent years have brought remarkable advances in dental porcelain technology. These days, veneers can be made so thin that they can sometimes be bonded directly onto your existing tooth surface. In other cases, a very thin layer of tooth enamel — as thin as the veneer itself — needs to be removed to fit the new porcelain surface and make it look as lifelike as possible. Either way, the results are sure to make you smile.
Versatility of Porcelain Veneers
Veneers can be used to improve any of the following characteristics of your teeth:
Color — Teeth can become stained by the foods and drinks we like, from smoking, and even normal aging. Veneers are available in numerous shades, from the most natural to the brightest Hollywood white.
Size & Shape — Teeth can become worn down from grinding habits, or may not have the shape or size you want to begin with. For example, some people consider rounder teeth more feminine and squarer teeth more masculine. Veneers can be shaped and sized in whichever way is most flattering to your face.
Alignment & Spacing — Veneers can be used to close small gaps between teeth or make slight corrections in alignment while improving tooth color and shape.
Limitations of Porcelain Veneers
There are some situations in which veneers would be inappropriate. For example, if you have significantly misaligned teeth or a large gap, orthodontics might be a more appropriate solution than veneers. And if you have lost a lot of tooth structure from decay or trauma (or a particularly severe grinding habit), it might be better to restore your teeth with porcelain crowns that cover the entire tooth.
Creating a New Smile with Porcelain Veneers
The first step in creating a new smile with porcelain veneers is to communicate exactly what you don't like about your smile as it is now. It's a great idea to bring in pictures of smiles you do like, as a starting point for discussion. It's possible to see how veneers would look on your teeth in one of several ways. A model of your teeth can be created over which wax “veneers” can be placed; sometimes acrylic (plastic) or tooth-colored filling material can be placed directly onto your teeth to demonstrate the effect veneers would have on them.
Once the plan has been agreed upon, your teeth will be prepared by removing a small amount of enamel, if this step is necessary. Molds of your teeth will be taken and used by a skilled dental laboratory to create your veneers, and you will receive a temporary set of veneers to wear during the few weeks it will take to create your permanent veneers. When the veneers come back from the lab, they will be cemented onto your teeth.
Caring for Your Veneers
Just like the teeth nature gave you, teeth restored with veneers need gentle brushing and flossing every day. This will remove dental plaque and ensure good gum tissue health around the veneers. Regular checkups at the dental office will remain as important as always to your oral and general health. And keep in mind that as tough as veneers are, they may not be able to withstand forces that come from using your teeth as tools (to open packages, for example) or biting into very hard foods like candy apples — which isn't good for your natural teeth, either! And if you grind or clench your teeth at night, you might be advised to get a custom-made nightguard to protect your veneers — and your investment.