Of all the teeth in the mouth, the ones receiving the most discussion and controversy would have to be the wisdom teeth or third molars. And this is not just a recent phenomenon, as people have been discussing them for centuries! See how much you really know about wisdom teeth by taking our quick and easy true/false self test.

1. Third molars received their name, “wisdom teeth,” because a moderate amount of wisdom is supposedly achieved in life about the time they appear.
   True or False
2. Wisdom teeth and all of their associated problems are commonplace in the practice of dentistry.
   True or False
3. Because wisdom teeth are so unpredictable, they typically make their appearance between the ages of 17 and 25.
   True or False
4. The most common consequence of impacted wisdom teeth is gum (periodontal) disease.
   True or False
5. If wisdom teeth are not removed, they will become impacted or cause crowding. This is why so many people require orthodontic treatment (braces).
   True or False
6. While most people have four wisdom teeth, having more (supernumerary teeth) or less (hypodontia) is possible.
   True or False
7. Through dental x-rays and routine check-ups, we can predict the timing and way in which wisdom teeth become visible (erupt).
   True or False
8. An impacted wisdom tooth, by definition, is a third molar that is colliding with or jammed against another important structure, such as an adjacent tooth, the gums or other important soft tissues in the mouth, or nerves and blood vessels.
   True or False
9. The primary symptom for indicating you have an impacted wisdom tooth is pain.
   True or False
10. If wisdom teeth need to be removed, it is best to remove them at a younger age rather than waiting until periodontal disease has started.
    True or False

Answers: 1) True. 2) True. 3) True. 4) True. 5) False. While wisdom teeth can be a factor in crowding, some people have no issues with these teeth. For them, they grow into proper position and are healthy teeth. 6) True. 7) False. Unfortunately, it is not possible to predict the way wisdom teeth will erupt. 8) True. 9) False. In some scenarios, impacted wisdom may cause no pain. 10) True.

To learn more about wisdom teeth and in particular, impacted wisdom teeth, continue reading the Dear Doctor magazine article “Wisdom Teeth.” Or you can contact us today to schedule an appointment to discuss your questions.

One topic we are often asked about is finger or thumb sucking and/or pacifier use — a challenge that most parents or caregivers will likely face with at least one of their children. The first and perhaps most important thing to remember is that it is totally normal for babies and young children to suck their fingers, thumb or a pacifier. It only becomes a problem when it continues as the child ages or if you unnecessarily make it a problem.

For most children, the sucking instinct starts in the womb before birth. This fact is evident, as many expectant mothers are shown their child sucking fingers or a thumb during a mid or late-term sonogram. Once the child is born, the habit may continue because it provides the child with a sense of security. Other research indicates that some babies start sucking habits as a way to make contact with, test and learn about their new world outside the womb. It is interesting to note that most children typically tend to stop finger or thumb sucking habits on their own and without much intervention between the ages of two and four. However, for others it can continue much longer. And that is the scenario that parents and caregivers need to be aware of so that they can monitor sucking habits.

Children who suck their thumbs or a pacifier after the age of two have a higher risk of developing some long term negative effects from the habit. This includes but is not limited to upper jaw development issues and “buck” teeth (upper front teeth that protrude forward out of a natural position towards the lips). For this reason, some researchers feel that children should cease thumb or finger sucking and/or pacifier use by 18 months of age. However, the Academy of Pediatric Dentistry recommends that parents and caregivers encourage children to cease this habit by age three.

If you feel your child is at risk due to his/her age and habits, please contact us today to schedule an appointment for your child. After a thorough exam, we can work with you to create a strategy for helping your child overcome finger, thumb or pacifier habits. To learn more about this topic, continue reading the Dear Doctor magazine article “Thumb Sucking in Children.”

CAT scans or Computer Assisted Tomograph scans have been around for years. However, it is quickly becoming the new standard in dentistry. The reasons are clear both literally and figuratively, as they provide our office with millions of pictures so that we can combine them together to create 3-dimensional (3-D) images. Prior to this technology, we could only image the body in 2-dimensions with x-rays (radiographs) — a technology first developed by Roentgen.

One of the best features of CAT scans and CBCT (Cone Beam Computed Tomography) scanning is that they enable us to see and experience the body from the inside. Having this ability changes (and many times) improves upon the way we diagnose. Here's how they work in very simplistic terms. Picture your favorite multi-layered cake with each layer representing an image. A three-layer cake requires just three images. For us to build a 3-D image similar to the cake, we require millions of very thin layers (images) that we put together, one on top of another, until our results, one 3-D image. And by having so many thin layers, we are best able to diagnose. For example, in our cake analogy, it is easier to determine if the cake contains finely chopped nuts, berries or other ingredients when you cut numerous very thin slices of cake to examine versus having one large chunk of cake.

It is important to note that in our office we may not recommend using this technology in all cases, as it may not be necessary for your particular diagnosis and/or treatment. While the technology can prove invaluable, it is quite expensive and a simple 2-D x-ray may provide everything we need. However, some dental specialty areas where CAT scans are currently used include:

• Orthodontists and pediatric dentists
• Cosmetic dentists and tooth replacement specialists (prosthodontists)
• Oral surgeons
• Root canal specialists (endodontists)
• Gum specialist (periodontists)

To learn more about CAT scans and how they are used in the various specialty areas, read the Dear Doctor magazine article “CAT Scans in Dentistry.” Or you can contact us today to schedule an appointment to discuss your specific questions.

We know from research extending back to the 1930s that very small amounts of fluoride in drinking water can significantly reduce dental caries (cavities) with no negative health effects. Fluoridated water is currently available to 70% of all Americans. However, we have also learned that excess fluoride from combined sources can result in staining of teeth called “fluorosis.”

What is the optimum fluoride concentration for healthy teeth?
A fluoride concentration of about 0.7-1.20 milligrams per liter (mg/L), or .7 to 1.2 ppm (parts per million), in the water supply seems to be optimum for dental health without causing negative effects. This concentration is about the same as a grain of salt in a gallon of water. An amount of 1 ppm was originally considered the safe standard, but since today Americans have access to more sources of fluoride than they did when water fluoridation was first introduced, the recommended amount has been reduced to .7 mg/L or .7 ppm.

The crucial amount to measure is the quantity of fluoride that is swallowed. Generally, the optimal level of fluoride per day from all sources is thought to be about .06 milligrams per kilogram of body weight, or about a sixth of the weight of a grain of salt for every two pounds of body weight.

It is probably not possible to calculate the precise amount of fluoride each person ingests per day, because the amount depends on more than just the amount of tapwater you drink. Bottled waters, soft drinks and juices also contain fluoride. Breast milk and cow's milk are very low in fluoride, but infant formulas may contain higher levels. Foods found to have high fluoride content include teas, dry infant cereals and processed chicken, fish and seafood products. Toothpaste can contribute to a child's total fluoride intake if the child swallows it.

What are the effects of too much fluoride?
Dental fluorosis produces a “mottling” of the outer coating of the tooth, the enamel. Mottling may show as staining ranging from small white striations to stained pitting and severe browning of the enamel surface.

The first six to eight years of life is the most risky time for development of dental fluorosis. Parents need to monitor their children to make sure they use small amounts of fluoride toothpaste (an amount the size of a pea on the brush is recommended). Watch for white spots on the enamel (hard outside coating) of your child's teeth. White spots from fluorosis mean it is time to pay attention to how much fluoride your child is getting from various sources, and to cut back on the total. You want fluoride's protection against cavities for your child's teeth, without the unsightliness of dental fluorosis from too much fluoride.

Contact us today to schedule an appointment to discuss your questions about fluoride. You can also learn more by reading the Dear Doctor magazine articles “Fluoride & Fluoridation in Dentistry” and “New Fluoride Recommendations.”