My Blog

Posts for: December, 2018

By Jeffery J. Johnson & Jodi B. Johnson DDS
December 29, 2018
Category: Dental Procedures
RegardlessofWhatYouveSeenOnlineDontFearaRootCanalTreatment

With smart phone in hand, you can instantaneously find out just about anything. Unfortunately, online search results aren’t always accurate. Case in point: there’s an idea floating on the World Wide Web that root canal treatments cause cancer.

Sounds ludicrous? Yes, but like other strange ideas this one has historical roots (pardon the pun). In the early 20th Century, a dentist named Weston Price propagated the idea that leaving a “dead” organ in the body caused health problems. By his view, a root canal-treated tooth fell into this category and could potentially cause, among other things, cancer.

But concern over root canal treatment safety is on shaky ground: dentistry examined Dr. Price’s ideas over sixty years ago and found them wanting. But first, let’s look at what a root canal treatment can actually do for your health.

Tooth decay is an infection that first attacks the outer tooth enamel and then continues to advance until it infects the inner pulp. It can then travel through the root canals to the roots and bone. Without intervention, the infection will result in tooth loss.

We use a root canal treatment to save the tooth from this fate. During the procedure we remove and disinfect all of the diseased or dead tissue within the pulp and root canals. We then fill the empty chamber and canals with a special filling and seal the tooth to prevent any further infection. And while technically the procedure renders a tooth unable to respond to thermal sensitivity or tooth decay, the tooth is still alive as it is attached to the periodontal ligament and its blood supply and nerve tissue. The tooth can still “feel” if you bite on something too hard and it doesn’t affect the tooth’s function or health, or a patient’s overall health for that matter.

As to Dr. Price’s theory, extensive studies beginning in the 1950s have examined the potential health risk of root canal treatments. The latest, a 2013 patient survey study published in a journal of the American Medical Association, not only found no evidence linking root canal treatment to cancer, but a lower risk of oral cancer in 45% of patients who had undergone multiple root canal treatments.

While root canal treatments do have potential side effects, none are remotely as serious as this online “factoid” about cancer. It’s far more likely to benefit your health by saving your 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 Safety.”


By Jeffery J. Johnson & Jodi B. Johnson DDS
December 26, 2018
Category: Dental Procedures
Tags: cosmetic dentistry   crowns  

Dental CrownWant a quick and lasting way to improve the health, appearance, and function of your smile? At our St. Louis, MO, office, Drs. Jeffery and Jodi Johnson deliver same-day dental crowns, the modern way to completely restore an injured, decayed, or infected tooth. Read below to learn how the crown process works and how this restoration will help you both keep your tooth and make it look great again.

Do you need a crown?

A dental crown protects and supports a tooth that has a limited healthy structure above the gum line. Some people need crowns after root canal therapy, to cap the tooth after receiving a filling, or to fix a tooth that is so oddly shaped it doesn't fit in with the rest of the smile.

Dr. Johnson will look at your tooth and take digital X-rays to see if it's healthy enough to receive a crown. If it is, you can look forward to keeping your tooth and avoiding the problems extraction causes such as an obvious gap, bone and gum recession, and a shifting of neighboring teeth.

The process of receiving a porcelain crown

Anticipate a one-to-two-hour restoration process from start to finish. Yes, modern CAD/CAM processes (computer-aided design/computer-aided manufacturing) now allow your dentists to design, create, and place your new crown right in their St. Louis, MO, office. Called CEREC restorations (Chairside Economical Restorations of Esthetic Ceramic), these crowns (and partial crowns called inlays and onlays) are perfectly configured and have an accurate fit and bite.

Throughout your treatment, you'll be comfortable and relaxed; you can even see your porcelain crown milled right in the treatment room. Oral impressions, negative imprints of your tooth, are taken digitally; so you won't have to deal with gooey impression putty.

Your dentist will remove the damaged portions of your tooth and shape it so that it accepts the crown. When the crown is ready, Dr. Johnson may enhance the color and sheen a bit and then bond the crown directly onto your tooth. An inlay resides between the cusps of a tooth, and an onlay fits over the entire top of the tooth. Both types of partial crowns blend seamlessly with the rest of the tooth.

Explore a renewed smile

You don't have to live with a weak, failing tooth. Dr. Jeffery Johnson and Dr. Jodi Johnson want to help. Call their general/family dental practice today to arrange your consultation: (314) 427-7400.


By Jeffery J. Johnson & Jodi B. Johnson DDS
December 19, 2018
Category: Dental Procedures
SingerDuaLipaSeestheWisdominPostponingTourDates

When die-hard music fans hear that their favorite performer is canceling a gig, it’s a big disappointment—especially if the excuse seems less than earth-shaking. Recently, British pop sensation Dua Lipa needed to drop two dates from her world tour with Bruno Mars. However, she had a very good reason.

“I’ve been performing with an awful pain due to my wisdom teeth,” the singer tweeted, “and as advised by my dentist and oral surgeon I have had to have them imminently removed.”

The dental problem Lipa had to deal with, impacted wisdom teeth, is not uncommon in young adults. Also called third molars, wisdom teeth are the last teeth to erupt (emerge from beneath the gums), generally making their appearance between the ages of 18-24. But their debut can cause trouble: Many times, these teeth develop in a way that makes it impossible for them to erupt without negatively affecting the healthy teeth nearby. In this situation, the teeth are called “impacted.”

A number of issues can cause impacted wisdom teeth, including a tooth in an abnormal position, a lack of sufficient space in the jaw, or an obstruction that prevents proper emergence. The most common treatment for impaction is to extract (remove) one or more of the wisdom teeth. This is a routine in-office procedure that may be performed by general dentists or dental specialists.

It’s thought that perhaps 7 out of 10 people ages 20-30 have at least one impacted wisdom tooth. Some cause pain and need to be removed right away; however, this is not always the case. If a wisdom tooth is found to be impacted and is likely to result in future problems, it may be best to have it extracted before symptoms appear. Unfortunately, even with x-rays and other diagnostic tests, it isn’t always possible to predict exactly when—or if—the tooth will actually begin causing trouble. In some situations, the best option may be to carefully monitor the tooth at regular intervals and wait for a clearer sign of whether extraction is necessary.

So if you’re around the age when wisdom teeth are beginning to appear, make sure not to skip your routine dental appointments. That way, you might avoid emergency surgery when you’ve got other plans—like maybe your own world tour!

If you would like more information about wisdom tooth extraction, please call our office to arrange a consultation. You can learn more in the Dear Doctor magazine articles “Wisdom Teeth” and “Removing Wisdom Teeth.”


By Jeffery J. Johnson & Jodi B. Johnson DDS
December 09, 2018
Category: Dental Procedures
Tags: wisdom teeth  
WisdomTeethWarrantCloseWatchtoAvoidFutureHealthIssues

As permanent teeth gradually replace primary (“baby”) teeth, most will come in by early adolescence. But the back third molars—the wisdom teeth—are often the last to the party, usually erupting between ages 18 and 24, and the source of possible problems.

This is because the wisdom teeth often erupt on an already crowded jaw populated by other teeth. As a result, they can be impacted, meaning they may erupt partially or not at all and remain largely below the gum surface.

An impacted tooth can impinge on its neighboring teeth and damage their roots or disrupt their protective gum attachment, all of which makes them more susceptible to tooth decay or periodontal (gum) disease. Impacted teeth can also foster the formation of infected cysts that create areas of bone loss or painful infections in the gums of other teeth.

Even when symptoms like these aren’t present, many dentists recommend removing the wisdom teeth as a preemptive measure against future problems or disease. This often requires a surgical extraction: in fact, wisdom teeth removal is the most common oral surgical procedure.

But now there’s a growing consensus among dentists that removing or not removing wisdom teeth should depend on an individual’s unique circumstances. Patients who are having adverse oral health effects from impacted wisdom teeth should consider removing them, especially if they’ve already encountered dental disease. But the extraction decision isn’t as easy for patients with no current signs of either impaction or disease. That doesn’t mean their situation won’t change in the future.

One way to manage all these potentialities is a strategy called active surveillance. With this approach, patient and dentist keep a close eye on wisdom teeth development and possible signs of impaction or disease. Most dentists recommend carefully examining the wisdom teeth (including diagnostic x-rays and other imaging) every 24 months.

Following this strategy doesn’t mean the patient won’t eventually have their wisdom teeth removed, but not until there are clearer signs of trouble. But whatever the outcome might be, dealing properly with wisdom teeth is a high priority for preventing future oral health problems.

If you would like more information on wisdom teeth and their potential impact on dental health, 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 “Wisdom Teeth: Coming of Age May Come with a Dilemma.”