Posts for category: Dental Procedures
One of the top concerns in public health today is exposure to the metallic element mercury within the environment. At abnormal levels, mercury can have a toxic effect on our nervous systems and cause other health problems.
These concerns over mercury have also increased attention on one material in dentistry that has included the metal in its makeup for over a century — dental amalgam for filling teeth. Amalgam is a metal alloy that can include, in addition to mercury, silver, tin, and copper. When first mixed dental amalgam is a moldable material used for fillings in prepared teeth. It then hardens into a durable restoration that can withstand biting forces.
While the use of amalgam has declined with the introduction of life-like colored fillings, it's still used for teeth like molars subject to high biting forces. With what we now know about the ill effects of mercury (which can make up to half of an amalgam mixture) is it safe to continue its use?
The American Dental Association has performed extensive research into amalgam safety. They've found that mercury is stabilized by the other metals in the amalgam. This prevents "free" molecules of mercury, the real source of harm to health, from escaping into the blood stream in the form of vapor. Although trace amounts of mercury vapor from the amalgam are released as a person chews, those levels are well below the threshold that could cause harm.
From a patient standpoint, the biggest drawback to dental amalgam isn't safety — it's the appearance of teeth it's used on. Silver fillings aren't considered attractive. And now there are viable filling alternatives that not only look like natural teeth but can withstand biting forces almost as well as amalgam. These materials include composite resins, mixtures of glass or quartz within resin, or glass and resin ionomers. Each of these has advantages and disadvantages depending on how and where they're applied.
After a thorough dental examination, we'll be able to advise you on what filling material will work best to produce the best result. And if we do suggest dental amalgam you can rest assured it will be a safe choice.
If you would like more information on the safety of dental amalgam, 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 “Silver Fillings — Safe or Unsafe?”
In real life he was a hard-charging basketball player through high school and college. In TV and the movies, he has gone head-to-head with serial killers, assorted bad guys… even mysterious paranormal forces. So would you believe that David Duchovny, who played Agent Fox Mulder in The X-Files and starred in countless other large and small-screen productions, lost his front teeth… in an elevator accident?
“I was running for the elevator at my high school when the door shut on my arm,” he explained. “The next thing I knew, I was waking up in the hospital. I had fainted, fallen on my face, and knocked out my two front teeth.” Looking at Duchovny now, you’d never know his front teeth weren’t natural. But that’s not “movie magic” — it’s the art and science of modern dentistry.
How do dentists go about replacing lost teeth with natural-looking prosthetics? Today, there are two widely used tooth replacement procedures: dental implants and bridgework. When a natural tooth can’t be saved — due to advanced decay, periodontal disease, or an accident like Duchovny’s — these methods offer good looking, fully functional replacements. So what’s the difference between the two? Essentially, it’s a matter of how the replacement teeth are supported.
With state-of-the-art dental implants, support for the replacement tooth (or teeth) comes from small titanium inserts, which are implanted directly into the bone of the jaw. In time these become fused with the bone itself, providing a solid anchorage. What’s more, they actually help prevent the bone loss that naturally occurs after tooth loss. The crowns — lifelike replacements for the visible part of the tooth — are securely attached to the implants via special connectors called abutments.
In traditional bridgework, the existing natural teeth on either side of a gap are used to support the replacement crowns that “bridge” the gap. Here’s how it works: A one-piece unit is custom-fabricated, consisting of prosthetic crowns to replace missing teeth, plus caps to cover the adjacent (abutment) teeth on each side. Those abutment teeth must be shaped so the caps can fit over them; this is done by carefully removing some of the outer tooth material. Then the whole bridge unit is securely cemented in place.
While both systems have been used successfully for decades, bridgework is now being gradually supplanted by implants. That’s because dental implants don’t have any negative impact on nearby healthy teeth, while bridgework requires that abutment teeth be shaped for crowns, and puts additional stresses on them. Dental implants also generally last far longer than bridges — the rest of your life, if given proper care. However, they are initially more expensive (though they may prove more economical in the long run), and not everyone is a candidate for the minor surgery they require.
Which method is best for you? Don’t try using paranormal powers to find out: Come in and talk to us. If you would like more information about tooth replacement, please contact us or schedule an appointment for a consultation. You can learn more in the Dear Doctor magazine articles “Crowns & Bridgework,” and “Dental Implants.”
A toothache means you have tooth decay, right? Not necessarily — your pain could be signaling a number of potential causes. Determining where, how much and how often it hurts will help us find out the cause and apply the appropriate treatment.
A single symptom, for example, can mean many things. A twinge of tooth pain as you consume hot or cold foods might indicate localized tooth decay easily repaired by a filling. But it could also mean the tooth's root surface has been exposed as a result of periodontal (gum) disease — aggressive plaque removal and maybe even gum surgery might be necessary. Or it could be a sign of inner pulp decay: in this case you'll likely need a root canal treatment to save the tooth.
Pulp decay can also announce itself with a very sharp and constant pain radiating from one or more teeth. You shouldn't hesitate to see us for an examination — even if the pain goes away. Pain cessation most likely means the nerves in the pulp have died. The infection, however, still exists, so you'll still probably need a root canal treatment.
If you notice severe, continuous pain and pressure around a tooth, particularly about the gums, you may have a localized, inflamed area of infection called an abscess. An abscess can be the result of gum disease, but it might also stem from a foreign body like a popcorn husk, getting stuck below the gums. We'll need to conduct a complete dental examination to determine the cause and how to treat it.
Finally, a sharp pain when you bite down could mean many things such as a loose filling or a fractured (cracked) tooth. The latter especially requires immediate attention to save the tooth.
These are just a few of the possible causes behind mouth or facial pain. Although all of them are serious, a few are true dental emergencies and can't wait if we're going to save a tooth. The sooner you see us, the sooner we can help relieve the pain, minimize any damage and avert disaster.
If you would like more information on treating tooth pain, 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 “Tooth Pain? Don't Wait!”
While it may not be one of your favorite features in the dental office, the dental drill is nevertheless necessary for treating problem teeth. It’s used primarily for removing decayed or damaged structure and preparing a tooth for fillings or other restorations.
Dental drills have been used for decades and are quite effective — but they have their drawbacks. Their rotating burrs often remove portions of healthy tooth structure along with decayed material. Friction from the drill action can cause discomfort, so local anesthesia is usually needed. Drills can also emit a high-pitched machine noise that’s unsettling to many patients.
There’s a growing alternative to the drill, known as air abrasion. Although the technology has been around since the 1950s, the development of new suction pumps that capture the resulting dust from its use has made it more palatable as an option to the traditional drill.
Also known as particle abrasion, the technique uses a pressurized stream of fine particles (usually aluminum oxide, an abrasive powder) directed at teeth to wear away (abrade) the tooth’s structural surface. We can be quite precise in the amount of surface material removed, so it’s useful for diminishing stains or roughing the surface for bonding materials like composite resin. We’re also able to remove decayed material with very little impact on surrounding healthy structure, and you may not need anesthesia during the procedure.
While this quiet alternative to the noisier drill is quite versatile, it does have its limitations. It’s not that efficient for preparing larger cavities for restoration or for removing older amalgam fillings. The teeth to be treated must be carefully isolated to prevent the fine particle dust produced from being swallowed by the patient or spread into the air. High-volume suction equipment is a must or the procedure will create a “sandstorm” of particles in the room.
Still, for situations suited to it and with proper isolation measures, air abrasion can be effective and comfortable. If the technology continues to improve, the dental drill may soon become a relic of the past.
If you would like more information on procedures using air abrasion, 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 “Air Abrasion Technology.”
While dental implants have become the most popular restoration among both dentists and patients, it’s primarily a tooth replacement — either for a missing tooth or a tooth beyond repair that must be extracted. But what if your tooth is still viable beneath its unattractive exterior? From an oral health standpoint, it’s usually wise to preserve it.
Even so, you still have options for making a tooth that’s spoiling your smile more attractive. One of the most effective solutions happens to be one of the oldest in dentistry: a crown. In effect, a crown is a life-like replica made of metal or dental porcelain that’s bonded over a tooth. And with today’s advanced materials and methods a crown can not only enhance the appearance of the tooth it covers, it can also be made to blend with the color and symmetry of adjacent teeth.
Here are a few dental situations where a crown could provide both protection for a tooth and a more attractive appearance.
Chipped, Damaged or Abnormally Developed Teeth. Teeth often take the brunt of mouth injuries, resulting in chips or even fractures. Also, teeth sometimes don’t erupt fully or develop a normal shape. A crown can effectively cover these missing or abnormal parts of a tooth and restore a more natural appearance.
Following Root Canal Treatment. Trauma or deep decay can damage the interior of a tooth - the pulp and root canals - and endanger its survival. A root canal treatment cleans out and repairs these areas, filling them with a special filling to prevent further infection. A crown is usually necessary to both protect the tooth and restore its appearance.
Discoloration. There’s a difference between outward staining of the enamel, which can usually be brightened with whitening solutions, and staining deep within the tooth from various causes. While there are techniques to bleach “intrinsic” staining, a crown provides another option for covering a heavily discolored tooth for a more attractive appearance.
Excessive Wear. We all experience some teeth wearing as we age; but grinding or clenching habits can accelerate that wear and shorten teeth, resulting in a prematurely aged look. Crowns restore worn teeth to a more normal length that can take “years” off your smile.
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.”