Posts for category: Dental Procedures
Dental amalgam—also known as “silver fillings”—has been used for nearly a hundred years to treat cavities. There are several reasons why this mixture of metals has been the go-to material among dentists: Malleable when first applied, dental amalgam sets up into a durable dental filling that can take years of biting forces. What’s more, it’s stable and compatible with living tissue.
But there’s been growing concern in recent years about the safety of dental amalgam, with even some wondering if they should have existing fillings replaced. The reason: liquid mercury.
Mercury makes up a good portion of dental amalgam’s base mixture, to which other metals like silver, tin or copper are added to it in powder form. This forms a putty that can be easily worked into a prepared cavity. And despite the heightened awareness of the metal’s toxicity to humans, it’s still used in dental amalgam.
The reason why is that there are various forms of mercury and not all are toxic. The form making headlines is known as methylmercury, a compound created when mercury from the environment fuses with organic molecules. The compound builds up in the living tissues of animals, particularly large ocean fish, which have accumulated high concentrations passed up through their food chain.
That’s not what’s used in dental amalgam. Dentists instead use a non-toxic, elemental form of mercury that when set up becomes locked within the amalgam and cannot leach out. Based on various studies, treating cavities with it poses no health risks to humans.
This also means there’s no medical reason for having an existing silver fillings removed. Doing so, though, could cause more harm than good because it could further weaken the remaining tooth structure.
The most viable reason for not getting a dental amalgam filling is cosmetic: The metallic appearance of amalgam could detract from your smile. There are newer, more life-like filling options available. Your dentist, though, may still recommend dental amalgam for its strength and compatibility, especially for back teeth. It’s entirely safe to accept this recommendation.
You may think all crowns are alike—but there can be a world of difference between one crown and another. Getting the crown your dentist recommends and one that's satisfactory to you will depend on a number of factors, including what you'll ultimately have to pay.
Here are 3 things you need to know about crowns before undergoing a crown restoration.
Different materials. Although porcelain is the most life-like material used, earlier types of this glass-based material weren't strong enough to withstand biting forces, especially in back teeth. Years ago, all-metal crowns were most often used until the development of a hybrid porcelain crown with an inner metal substructure for strength. In recent years stronger all-porcelain crowns have risen in popularity. The material type that works best often depends on the tooth to be crowned—all-porcelain may work for a visible front incisor, but a porcelain-metal hybrid might be needed for a back molar.
Level of artistry. While new computer manufacturing systems allow dentists to produce patient crowns in-office, most still require the services and skills of a dental lab technician. The cost difference between crowns usually occurs at this juncture: the more life-like and customized the crown, the more artistry and time required by a technician to produce it. This can increase the cost of the crown.
Limited choices. While you and your dentist want your crown choice to be as individualized and life-like as possible, your dental insurance may limit your options. Many policies only provide benefits for the most basic crown restoration—enough to regain functionality and have an acceptable, but not always the most aesthetic, appearance. To get a higher quality of crown you may have to supplement what your policy and deductible will cover.
Deciding which crown is best will depend on where it will be needed, the level of attractiveness you desire and your insurance and financial comfort level. And your dentist can certainly help guide you to a crown choice that's right for you.
If you would like more information on restorative crown choices, 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 “Porcelain Dental Crowns.”
Ed Helms is best known for his role as the self-absorbed, Ivy League sales rep, Andy Bernard, on television's The Office. But to millions of fans he's also Stu, a member of a bachelor trip to Las Vegas in the 2009 movie The Hangover. In it, Stu and his friends wake up from a wild night on the Strip to find some things missing: the groom-to-be, their memories and, for Stu, a front tooth.
In reality, the missing tooth gag wasn't a Hollywood makeup or CGI (computer-generated imagery) trick—it was Ed Helm's actual missing tooth. According to Helms, the front tooth in question never developed and he had obtained a dental implant to replace it. He had the implant crown removed for the Hangover movie and then replaced after filming.
Helms' dental situation isn't that unusual. Although most of the 170 million-plus teeth missing from Americans' mouths are due to disease or trauma, a few happened because the teeth never formed. While most of these congenitally missing teeth are in the back of the mouth, a few, as in Helms' case, involve front teeth in the “smile zone,” which can profoundly affect appearance.
Fortunately, people missing undeveloped teeth have several good options to restore their smiles and dental function. The kind of tooth missing could help determine which option to use. For example, a bridge supported by the teeth on either side of the gap might work well if the teeth on either side are in need of crowns.
If the missing tooth happens to be one or both of the lateral incisors (on either side of the centermost teeth), it could be possible to move the canine teeth (the pointy ones, also called eye teeth) to fill the gap. This technique, known as canine substitution, may also require further modification—either by softening the canines' pointed tips, crowning them or applying veneers—to help the repositioned teeth look more natural.
The optimal solution, though, is to replace a missing tooth with a dental implant which then has a lifelike crown attached to it, as Ed Helms did to get his winning smile. Implant-supported replacement teeth are closest to natural teeth in terms of both appearance and function. Implants, though, shouldn't be placed until the jaw has fully developed, usually in early adulthood. A younger person may need a temporary restoration like a bonded bridge or a partial denture until they're ready for an implant.
Whatever the method, there's an effective way to restore missing teeth. Seeing us for an initial exam is the first step toward your own winning smile.
You feel great about your new smile, thanks to dental implants! And you may also be feeling relief as the problems with your former teeth fade into the past.
But that doesn’t mean you can drop your guard on periodontal (gum) disease. Even though implants are impervious to decay, the natural tissues supporting them are vulnerable to periodontal (gum) disease. If they become diseased, your implants could lose their bone support and eventually fail.
And that failure could happen quickly. That’s because, as life-like as they are, implants don’t have one important advantage of real teeth: an attachment to a connective tissue called the periodontal ligament. This tough but elastic ligament lies between the teeth and the bone, attaching to both with tiny extending fibers and holding the teeth in place.
And that’s not all: Because the periodontal ligament contains an abundance of blood vessels, it can supply antibodies to help fight infection. The body’s defenses may not be able to stop disease, but they can certainly inhibit its progress.
Implants can’t benefit from this infection-fighting mechanism. So, when an infection arises in the gums surrounding an implant, it can spread rapidly through a form of gum disease known as peri-implantitis (literally “inflammation around an implant”). If we don’t stop it with prompt treatment, you could lose bone support from your implant and eventually lose it, sometimes in quick fashion.
That’s why you should clean your implants everyday like you do the rest of your teeth with brushing and flossing. You should also visit us regularly for dental cleanings. A dental cleaning involving implants is similar to one with natural teeth, except the hygienist won’t use metal instruments on the implants—this could create tiny scratches on their surface. Instead, they’ll use nylon or plastic instruments or ultrasonic equipment to clean them.
You should also make a dental appointment as soon as you notice swollen, reddened or bleeding gums. If you have gum disease, we can stop the infection through treatment and restore your gums to health. This can be a long and involved process, but it’s necessary to preserve your implants.
It’s true that implants can change your life. If you want to enjoy that change for a long time, take care of your implants and the natural tissues that support them.
If you would like more information on caring for 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 “Dental Implant Maintenance.”
Root canal treatments have suffered a bad rap over the years—and undeservedly. While we applaud root canal therapy for the millions of decayed teeth the procedure has saved, the worn-out cliché that it's painful still lingers on.
So, let's set the record straight: a root canal treatment doesn't cause pain, it most often relieves it. Let's look a little closer at what actually happens before, during and after this tooth-saving treatment.
Before: a tooth in crisis. Tooth decay can damage more than a tooth's outer enamel. This aggressive bacterial infection can work its way into a tooth's interior, destroying the nerves and blood vessels in the pulp, before moving on to the roots and supporting bone through the root canals. Untreated, this devastating process can lead to tooth loss. A root canal treatment, however, can stop the invading decay and save the tooth.
During: stopping the disease. The dentist first numbs the tooth and surrounding gum tissues with local anesthetic—the only thing you might normally feel during treatment is a slight pressure. They then drill into the tooth to access the inner pulp and root canals and remove all diseased tissue. Once the interior spaces of the tooth have been disinfected, the dentist then fills the empty pulp chamber and root canals with a pliable filling called gutta percha to prevent future infection.
After: preventing re-infection. With the filling complete, the dentist then seals the access hole. There may be some minor soreness for a few days, similar to the aftermath of a routine filling, which can usually be managed with over-the-counter pain relievers like ibuprofen. Sometime later, the dentist will normally finish the treatment with a new crown on the tooth. This accomplishes two things: It helps strengthen the tooth against stress fracturing and it provides another layer of protection against future decay.
Root canal treatments have an exceptional track record for giving diseased teeth a second chance. There's nothing to fear—and everything to gain for your troubled tooth.
If you would like more information on root canal treatment, 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 “Root Canal Treatment: What You Need to Know.”