Posts for: April, 2018
Dental implants are today’s closest restorative facsimile to natural teeth. And they’re versatile: not only can they replace single teeth but they can also support bridges or dentures.
But since one of their crucial components is made of metal, are you out of luck obtaining this state-of-the-art dental restoration if you have a metal allergy?
The answer is: probably not—it’s rare for implants to cause an allergic reaction. Still, metal allergies can be a potential problem within your mouth as with other areas of health.
An allergy originates from the body’s necessary response to potentially harmful microorganisms or substances. Sometimes, however, this response becomes chronic and exaggerated, creating an allergy. People can have allergies to nearly anything with responses ranging from a minor rash to a potentially life-threatening multi-organ system shutdown (anaphylactic shock).
A small number of people have allergies to particular metals. One of the most common is nickel, which affects an estimated 17% of women and 3% of men; cobalt and chromium are also known to cause allergies. Consumer exposure, particularly metal contact with the skin through jewelry or clothing, is the most prevalent, but not the most concerning. That’s reserved for metal allergies related to medical devices like coronary stents or hip and knee prostheses. And in dentistry, there are rare occasions of inflammation or rashes from metal amalgam fillings.
Which brings us to dental implants: the main metal post that’s inserted into the jawbone is usually made of titanium. It’s the metal of choice for two reasons: it’s bio-compatible, meaning the body normally accepts its presence; and it’s osteophilic, which means bone cells readily grow and adhere to it, a major reason for implant durability.
While it’s possible for someone to have an allergy and subsequent reaction to implants with titanium, the occurrences appear to be extremely low. In one study of 1,500 patients, titanium allergies were estimated to be a factor in implant failures in less than 1% of those studied.
Even so, if you have known metal allergies you should make sure your dentist knows. Being aware of all the facts will help them recommend the best tooth replacement choice for you—and hopefully it will be dental implants.
If you would like more information on dental implant restorations, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor article “Metal Allergies to Dental Implants.”
All eyes were on Boston Celtics point guard Isaiah Thomas in Game 1 of the second-round NBA Playoff series against the Washington Wizards — and not just because he scored a game-high of 33 points! Even more dramatic was the moment his jaw collided with an opponent’s elbow, sending one of his front teeth flying out of his mouth and onto the floor.
Press reports said the Celtics’ team physician attempted to reinsert the tooth, but it didn’t remain in place when Thomas resumed playing the game. Over the next several days, he reportedly underwent a total of ten hours of oral surgery, and was fitted with a four-piece temporary bridge. A statement from the team noted that Thomas suffered “a complete fractured tooth and two other subluxed/shifted teeth… [He] will receive a permanent bridge at a future date.” So what does all that mean?
When we say a tooth is fractured, it means the crown (visible part) of the tooth has broken off from its roots, either above or below the gum line. Depending on the severity of the fracture, it is sometimes possible to save the natural tooth by performing a root canal to prevent bacterial infection, and then placing a crown (cap) on the tooth to restore its appearance and function. In more severe cases, however, the tooth can’t be saved and must be extracted.
Unfortunately, that isn’t Thomas’ only problem. He also has two subluxed teeth — that is, teeth that have shifted from their original position, but haven’t been knocked out of their sockets. Subluxed teeth often result from a severe blow to the mouth, and may be treated by stabilization or splinting. Team officials haven’t said exactly what was done during Thomas’ dental treatment, but it could very well have involved extracting the roots of any teeth that couldn’t be saved, and possibly placing dental implants in his jaw for future tooth restoration.
A dental implant is a small screw-shaped titanium post that is inserted directly into the bone of the upper or lower jaw in a minor surgical procedure. In time, it becomes fused with the bone itself, offering a sturdy anchorage for replacement teeth. One implant can support one replacement crown; two or more implants can support a number of replacement teeth joined together as a unit. This is called a dental bridge.
Bridges can also be supported by adjacent healthy teeth — but first, the outer surfaces of the crown must be prepared (reduced in size), so that the bridge can be attached over the remaining part of the crown. In many instances, implants are preferred because they do not compromise the structure of healthy teeth nearby.
Dental difficulties didn’t end Isaiah Thomas’ season — but an earlier hip injury that became aggravated finally did.Â As unfortunate as this is, maybe now at least the NBA star will have a chance to let those injured teeth heal, and show up next season with a smile that’s as good as new.