You’re considering dental implants and you’ve done your homework: you know they’re considered the best tooth replacements available prized for durability and life-likeness. But you do have one concern — you have a metal allergy and you’re not sure how your body will react to the implant’s titanium and other trace metals.
An allergy is the body’s defensive response against any substance (living or non-living) perceived as a threat. Allergic reactions can range from a mild rash to rare instances of death due to multiple organ system shutdowns.
A person can become allergic to anything, including metals. An estimated 17% of women and 3% of men are allergic to nickel, while 1-3% of the general population to cobalt and chromium. While most allergic reactions occur in contact with consumer products (like jewelry) or metal-based manufacturing, some occur with metal medical devices or prosthetics, including certain cardiac stents and hip or knee replacements.
There are also rare cases of swelling or rashes in reaction to metal fillings, commonly known as dental amalgam. A mix of metals — mainly mercury with traces of silver, copper and tin — dental amalgam has been used for decades with the vast majority of patients experiencing no reactions. Further, amalgam has steadily declined in use in recent years as tooth-colored composite resins have become more popular.
Which brings us to dental implants: the vast majority are made of titanium alloy. Titanium is preferred in implants not only because it’s biocompatible (it “gets along” well with the body’s immune system), but also because it’s osteophilic, having an affinity with living bone tissue that encourages bone growth around and attached to the titanium. Both of these qualities make titanium a rare trigger for allergies even for people with a known metal allergy.
Still, implant allergic reactions do occur, although in only 0.6% of all cases, or six out of a thousand patients. The best course, then, is to let us know about any metal allergies you may have (or other systemic conditions, for that matter) during our initial consultation for implants. Along with that and other information, we'll be better able to advise you on whether implants are right for you.
If you would like more information on the effects of metal allergies on 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 “Metal Allergies to Dental Implants.”
As a cancer patient, you know how important radiation and chemotherapy are to overcoming the disease. But these treatments often come at a price to other aspects of your health, including your teeth and gums if the treatment target includes the head or neck regions.
Radiation and chemotherapy are effective because they target and destroy cancer cells. Unfortunately, they may also kill non-cancerous, healthy cells; in the mouth, for example, they can damage the cells in the salivary glands and disrupt their ability to produce adequate saliva flow, leading to xerostomia (dry mouth).
This could seriously affect your teeth’s protective enamel shell. As we eat or drink, our mouth’s pH level can become too acidic. Acid is your enamel’s primary enemy because it causes the minerals in the enamel to soften and dissolve (de-mineralization). Saliva neutralizes acid and replaces much of the enamel’s minerals.
Without adequate saliva flow, the enamel will tend to erode over time. You can further aggravate the situation if you routinely consume acidic foods and drinks, like sipping energy drinks or soda during the day. Once the enamel is gone it can’t be replaced naturally, and the teeth will be in serious danger of tooth decay and eventual loss of function and appearance.
To avoid these consequences you should take steps during cancer treatment to reduce your risk for xerostomia or other unhealthy mouth conditions: limit your consumption of acidic foods and beverages; use mouth rinses to counteract acidity and inhibit bacterial growth; and promote saliva flow through medication.
It may be, though, that enamel erosion and subsequent tooth damage is unavoidable. In this case, you may need to consider restorative options with artificial crowns or other cosmetic enhancements — not only to improve your appearance but also to protect your natural teeth from further damage.
Before considering the latter, you should undergo a complete dental examination to assess your condition and make sure you have adequate bone and gum support, and any dental disease under control. From here, we can go about restoring the attractive smile that may have faded during your battle with cancer.
Waiting is part of life for a teenager: waiting to get a driver’s license, to graduate high school or to leave home and stretch their wings. A teenager with lost teeth may also need to wait until they’re older to obtain dental implants.
The reason arises from the differences in how implants and natural teeth attach to the jaw. Although natural teeth may seem rigidly set in the bone, they’re actually held in place by an elastic tissue between them and the bone known as the periodontal ligament. Tiny filaments that attach to the teeth on one side and the bone on the other hold the teeth in place, but also allow the teeth to move gradually in response to mouth changes.
A titanium implant post doesn’t have this relationship with the periodontal ligament — it’s attached directly to the jaw bone. Over time the bone, which has a special affinity with titanium, grows and adheres to it to form a durable bond without an attachment to the periodontal ligament. Because of this the implant can’t move like a natural tooth.
This is extremely important for implant placement because the jaws in particular won’t fully develop in most people until their late teens or early twenties: the upper jaw in particular will tend to grow out and down. Natural teeth accommodate to these changes, but the implant can’t — it will appear to retreat into the jaw. The gum tissues surrounding the implant also won’t conform to the continuing growth and may appear receded.
The best approach is to choose a temporary replacement option until the jaws and other facial bone structures have finished growing. One example is a bonded bridge in which we use a bonding agent to attach a bridge of artificial teeth to teeth on either side of a missing tooth — bonding won’t permanently alter them as with a traditional bridge. Once the jaws have finished growing, we can remove the bonded bridge and install the more permanent implant.
Ask any teenager: waiting can be hard. But with dental implants, waiting until the right time will help ensure the attractive result is a permanent one.
If you would like more information on dental restorations and teenagers, 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 “Teenagers & Dental Implants.”
While the sport of golf may not look too dangerous from the sidelines, players know it can sometimes lead to mishaps. There are accidents involving golf carts and clubs, painful muscle and back injuries, and even the threat of lightning strikes on the greens. Yet it wasn’t any of these things that caused professional golfer Danielle Kang’s broken tooth on the opening day of the LPGA Singapore tournament.
“I was eating and it broke,” explained Kang. “My dentist told me, I've chipped another one before, and he said, you don't break it at that moment. It's been broken and it just chips off.” Fortunately, the winner of the 2017 Women’s PGA championship got immediate dental treatment, and went right back on the course to play a solid round, shooting 68.
Kang’s unlucky “chip shot” is far from a rare occurrence. In fact, chipped, fractured and broken teeth are among the most common dental injuries. The cause can be crunching too hard on a piece of ice or hard candy, a sudden accident or a blow to the face, or a tooth that’s weakened by decay or repetitive stress from a habit like nail biting. Feeling a broken tooth in your mouth can cause surprise and worry—but luckily, dentists have many ways of restoring the tooth’s appearance and function.
Exactly how a broken tooth is treated depends on how much of its structure is missing, and whether the soft tissue deep inside of it has been compromised. When a fracture exposes the tooth’s soft pulp it can easily become infected, which may lead to serious problems. In this situation, a root canal or extraction will likely be needed. This involves carefully removing the infected pulp tissue and disinfecting and sealing the “canals” (hollow spaces inside the tooth) to prevent further infection. The tooth can then be restored, often with a crown (cap) to replace the entire visible part. A timely root canal procedure can often save a tooth that would otherwise need to be extracted (removed).
For less serious chips, dental veneers may be an option. Made of durable and lifelike porcelain, veneers are translucent shells that go over the front surfaces of teeth. They can cover minor to moderate chips and cracks, and even correct size and spacing irregularities and discoloration. Veneers can be custom-made in a dental laboratory from a model of your teeth, and are cemented to teeth for a long-lasting and natural-looking restoration.
Minor chips can often be remedied via dental bonding. Here, layers of tooth-colored resin are applied to the surfaces being restored. The resin is shaped to fill in the missing structure and hardened by a special light. While not as long-lasting as other restoration methods, bonding is a relatively simple and inexpensive technique that can often be completed in just one office visit.
If you have questions about restoring chipped teeth, please contact us or schedule an appointment for a consultation. You can learn more by reading the Dear Doctor magazine articles “Porcelain Veneers” and “Artistic Repair of Chipped Teeth With Composite Resin.”
Athletes in contact sports are at significant risk for traumatic injury to their teeth and mouth. It’s estimated 600,000 emergency room visits each year involve a sports-related dental injury.
Athletic mouthguards have become the premier safeguard against sports-related oral injuries. First worn by professional boxers in the 1920s, mouthguards are now required for use by various sports associations and leagues — from amateur youth to professional — for a number of sports. The National Collegiate Athletic Association (NCAA), for example, requires their use during play for hockey, lacrosse, field hockey and football. The American Dental Association recommends mouthguards for 29 sports or exercise activities.
But do mouthguards actually prevent injury? To answer that question in a scientific manner, the Journal of Sports Medicine published an evidence-based report in 2007 on mouthguard effectiveness for preventing or reducing the severity of oral-facial injuries and concussions. While the report objectively analyzed many of the problems and issues associated with mouthguards (like materials, design and durability), it concluded the risk of an oral-facial injury was nearly two times greater without the wearing of a mouthguard.
That being said, most dentists and other professionals in sports safety would advise not all mouthguards are alike. The stock, “off the shelf” mouthguard found in many retail stores with limited size offerings is the least expensive, but also least protective, of mouthguard types. Mouth-formed or “boil-and-bite” protectors, which are softened in boiling water and then bit down on by the player to form the fit, are better than the stock version — however, they often don’t cover all of the player’s back teeth.
The best option is a custom-designed guard made by a dentist for the individual patient. Although relatively expensive (costs range in the hundreds, compared with $25 or less for a stock guard), they provide the highest recognized level of mouth protection.
The bottom line: a mouthguard is a must-wear part of any uniform for any sport that involves contact or high velocity objects of play. If you or a family member is a contact sport athlete, it’s essential you protect your teeth and mouth with a custom-fit, high quality mouthguard.
If you would like more information on mouthguards, 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 “Athletic Mouthguards.”
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