Posts for: April, 2017
Radiographic (x-ray) images are an indispensible diagnostic tool in dentistry. One of the most routine and useful types of x-rays dentists take is the so-called bitewing. Here are some things you may want to know about this common diagnostic procedure.
What are bitewing x-rays?
Bitewings reveal the presence and extent of decay in the back teeth, specifically in areas where adjacent teeth touch each other. Unlike other areas of the teeth, these contacting surfaces between adjacent teeth can’t be examined visually. Bitewings can also show areas of bone loss around teeth — a sign of periodontal disease; however, they are not taken for that purpose because bitewings will not show the complete root surface that is surrounded by bone.
Why are they called that?
The name “bitewing” refers to how the film — or sensor, in the case of a digital x-ray — is positioned in the mouth: The patient bites down on a little tab or wing that holds the apparatus in place.
How often do I need them?
This is determined on a case-by-case basis, with the goal of not exposing you to any more radiation than necessary — even the minimal amount found in a series of bitewing x-rays. Your individual susceptibility to caries (tooth decay) and personal dental history will play a major role in determining how frequently you need radiographic examination — and, for that matter, how often you need to come in for routine cleanings and exams.
Are they safe?
The safety of bitewing x-rays is best illustrated with a comparison to the regular daily radiation exposure we get every day from environmental sources, which is about 0.01 millisieverts — the unit of measure we use for radiation. A series of 4 bitewing x-rays exposes you to 0.004 millisieverts of radiation — less than half of the daily exposure. Undetected tooth decay, which can spread quickly through the softer inner layers of teeth, is considered much more dangerous!
If a bitewing x-ray shows that there is tooth decay, what happens next?
If the cavity is very small, we may be able to treat it during the same appointment. If not, we will make a separate appointment to make sure it is taken care of promptly. The sooner tooth decay is treated, the better!
During his former career as a professional footballer (that's a soccer star to U.S. sports fans) David Beckham was known for his skill at “bending” a soccer ball. His ability to make the ball curve in mid-flight — to avoid a defender or score a goal — led scores of kids to try to “bend it like Beckham.” But just recently, while enjoying a vacation in Canada with his family, “Becks” tried snowboarding for the first time — and in the process, broke one of his front teeth.
Some fans worried that the missing tooth could be a “red card” for Beckham's current modeling career… but fortunately, he headed straight to the dental office as soon as he arrived back in England. Exactly what kind of treatment is needed for a broken tooth? It all depends where the break is and how badly the tooth is damaged.
For a minor crack or chip, cosmetic bonding may offer a quick and effective solution. In this procedure, a composite resin, in a color custom-made to match the tooth, is applied in liquid form and cured (hardened) with a special light. Several layers of bonding material can be applied to re-construct a larger area of missing tooth, and chips that have been saved can sometimes be reattached as well.
When more tooth structure is missing, dental veneers may be the preferred restorative option. Veneers are wafer-thin shells that are bonded to the front surface of the teeth. They can not only correct small chips or cracks, but can also improve the color, spacing, and shape of your teeth.
But if the damage exposes the soft inner pulp of the tooth, root canal treatment will be needed to save the tooth. In this procedure, the inflamed or infected pulp tissue is removed and the tooth sealed against re-infection; if a root canal is not done when needed, the tooth will have an increased risk for extraction in the future. Following a root canal, a tooth is often restored with a crown (cap), which can look good and function well for many years.
Sometimes, a tooth may be knocked completely out of its socket; or, a severely damaged tooth may need to be extracted (removed). In either situation, the best option for restoration is a dental implant. Here, a tiny screw-like device made of titanium metal is inserted into the jaw bone in a minor surgical procedure. Over time, it fuses with the living bone to form a solid anchorage. A lifelike crown is attached, which provides aesthetic appeal and full function for the replacement tooth.
So how's Beckham holding up? According to sources, “David is a trooper and didn't make a fuss. He took it all in his stride." Maybe next time he hits the slopes, he'll heed the advice of dental experts and wear a custom-made mouthguard…
If you have questions about restoring damaged teeth, please contact our office to schedule a consultation. You can read more in the Dear Doctor magazine articles “Trauma and Nerve Damage to Teeth” and “Children's Dental Concerns and Injuries.”
A critical part of effective, daily oral hygiene, flossing removes bacterial plaque from between teeth that can’t be accessed with brushing. Unfortunately, it’s often neglected — string flossing requires a bit more dexterity than brushing and can be difficult to do properly.
It can be even more difficult for people with implants or who wear orthodontic appliances. For brace wearers in particular, getting access to areas between teeth with string floss is next to impossible; the metal brackets and tension wire also have a tendency to catch and retain food debris that’s difficult to remove with brushing alone.
Water flossing, using a device called an oral irrigator, is an effective alternative that addresses many of these difficulties. First available for home use in the 1960s, an oral irrigator delivers pulsating water at high pressure through a handheld applicator that forcefully flushes material from between teeth.
There’s no question that string flossing is effective in plaque removal between teeth — but what about oral irrigators? A 2008 study looked at a group of orthodontic patients with braces who used oral irrigators and compared them with a similar group that only brushed. The study found that five times as much plaque was removed in the group using the oral irrigators as opposed to the group only brushing.
Oral irrigators may also be effective for people who’ve developed periodontal (gum) disease. In fact, oral irrigators coupled with ultra-sound devices are routinely used by dental hygienists to remove plaque and calculus (hardened plaque deposits) in periodontal patients. As with regular oral hygiene, though, it’s important for patients with gum disease to include water flossing with daily brushing (at least twice a day) and regular cleaning sessions at the dentist to ensure removal of all plaque and calculus.
If you’re interested in using an oral irrigator, be sure to consult with us at your next appointment. Not only can we recommend features to look for in equipment, but we can also instruct you on the techniques to make water flossing an effective plaque remover.
If you would like more information on water flossing, 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 “Cleaning Between Your Teeth.”