We have learned that an important part of oral health is education — but more importantly, making it fun to learn so that you retain (and apply) what you learn! For this reason, we have put together the following self-test so that you can quickly access your knowledge on the subject of mouthguards.

1. The first sport to use (and require) protective mouthguards was:
   1. football
   2. boxing
   3. baseball
   4. ice hockey
2. Research conducted by the American Dental Association (ADA) found that individuals are ___ times more likely to damage their teeth when not wearing a mouthguard while engaged in contact sports or rigorous physical exercise.
   1. 10
   2. 20
   3. 40
   4. 60
3. As a rule of thumb, females do not require mouthguards because they are not as physically active as their male counterparts.
   1. True
   2. False
4. The American Academy of General Dentistry (AAGD) reports that mouthguards prevent more than ______ injuries to the mouth and/or teeth each year.
   1. 200,000
   2. 300,000
   3. 400,000
   4. 500,000
5. Which of the following sports or activities does the ADA recommend that participants wear protective mouthguards:
   1. acrobatics
   2. bicycling
   3. handball
   4. all of the above
6. The US Centers for Disease Control (CDC) reports that more than ______ sports-related injuries end-up in the emergency room each year with injury or damage to the teeth and mouth.
   1. 275,000
   2. 425,000
   3. 600,000
   4. 735,000
7. Over-the-counter mouthguards are just as effective as professionally made mouthguards.
   1. True
   2. False
8. In addition to the trauma of having a tooth (or teeth) knocked out, individuals who have suffered from this type of injury may end up spending ______ per tooth over a lifetime for teeth that are not properly preserved and replanted according to the National Youth Sports Foundation for Safety.
   1. $10,000 to $20,000
   2. $15,000 to $25,000
   3. $25,000 to $35,000
   4. Less than $10,000

Answers: 1) b, 2) d, 3) b, 4) a, 5) d, 6) c, 7) b, 8) a

You can learn more about the importance of mouthguards when you continue reading the Dear Doctor magazine article “Athletic Mouthguards.” And if you have already experienced a dental injury, it may not be too late. However, we need to evaluate the damage so that we can establish a plan for restoring optimal oral health. Contact us today to learn more about protecting your mouth and teeth or to schedule an appointment.

When dentists talk to patients, they often use specialized vocabulary referring to various dental conditions. Do you understand what they mean when they use these words — or are you wondering what they are talking about?

Here's your chance to test your knowledge of ten words that have a particular meaning in the context of dentistry. If you already know them, congratulations! If you don't, here's your chance to learn what these words mean in the dental world.

Enamel
In dentistry, enamel is the hard outer coating of your teeth. It is the hardest substance produced by living animals. It is a non-living, mineralized, and composed of a crystalline form of calcium and phosphate.

Dentin
The dentin is the layer of a tooth that is just beneath the enamel. It is living tissue similar to bone tissue.

Pulp
When dentists speak of pulp, we mean the tissues in the central chamber of a tooth (the root canal) that nourish the dentin layer and contain the nerves of the tooth.

Bruxism
Many people exert excess pressure on their teeth by clenching or grinding them. This is called bruxism, a habit that can be very damaging to teeth.

Occlusion
By this we mean how the upper and lower teeth are aligned, and how they fit together. This can also be referred to as your bite.

Dental caries
This term refers to tooth decay. Dental caries and periodontal disease (see below) are two of the most common diseases known to man. Today, these diseases are not only treatable, but they are also largely preventable.

Periodontal disease
A term for gum disease, this term comes from “peri,” meaning around and “odont,” meaning tooth. It is used to describe a process of inflammation and infection leading to the progressive loss of attachment between the fibers that connect the bone and gum tissues to the teeth. This can lead to loss of teeth and of the bone itself.

Erosion
When you consume acidic foods or drinks, the acids in your mouth react directly with minerals in the outer enamel of your teeth, causing chemical erosion. This is not the same as tooth decay, which is caused by acids released by bacterial film that forms on your teeth (see below).

Dental implant
A dental implant is a permanent replacement for a missing tooth. It replaces the root portion of the tooth and is most often composed of a titanium alloy. The titanium root fuses with the jaw bone, making the implant very stable. A crown is attached to the implant and can be crafted to match your natural teeth.

Plaque
Dental plaque is the whitish film of bacteria (a biofilm) that collects on your teeth. Your goal in daily brushing and flossing is to remove plaque.

Contact us today to schedule an appointment to discuss any questions you may have about your teeth and gums. You can also learn more by reading Dear Doctor magazine article “How and Why Teeth Wear.”

Guidelines regarding the concentration of fluoride in water have recently been changed by the US Government's Department of Health and Human Services (HHS) and the Environmental Protection Agency (EPA). These agencies recommended a reduction of fluoride in water supplies to 0.7mg/L, modifying the original recommendations provided in 1962 by the US Public Health Service.

What is fluoride, and why add it to water supplies?
Fluoride is a chemical form of fluorine, a naturally occurring element. For decades, scientists have carried out studies on the effects of fluoride in water, and they have proved that fluoride strengthens tooth surfaces and makes them resistant to decay. A fluoride concentration of about one milligram per liter (1 mg/L), or 1 part per million (1ppm), in the water supply is associated with substantially fewer cavities. This concentration of fluoride (equivalent to a grain of salt in a gallon of water) has been found to have no negative health effects.

The Center for Disease Control (CDC) says that fluoridated water is one of the ten most effective public health measures of the 20th Century. The optimal amount of fluoride necessary to make teeth resistant to decay turns out to be between 0.7 and 1.20 milligrams per liter (mg/L). A certain amount of fluoride occurs naturally in water supplies, and communities have added fluoride to bring the amount up to the optimal recommendations.

How does fluoride you drink get into your teeth?
The fluoride you drink in your water is deposited in your bones. Bone is an active living substance that is constantly broken down and rebuilt as a normal body process. As this happens the fluoride is released into the blood, from which it can enter the saliva and act on the tooth surface.

What about fluoride from other sources?
Americans now have access to many sources of fluoride in addition to the water they drink. These include foods, beverages and toothpaste. As a result, dentists have begun to notice an increased prevalence of a condition known as Dental Fluorosis.

What is Dental Fluorosis?
Dental Fluorosis can occur when teeth, particularly in children, receive too much fluoride. This condition is a mottling or uneven staining of the tooth surface enamel. There may be small white spots or extensive brownish discolorations. The mottled enamel is still resistant to decay, but it may be unattractive in appearance.

What is the idea behind the new guidelines?
With the new guidelines, fluoride is kept at the lower end of the scale of the optimal concentration for strengthening teeth against decay. At this end, there is room to add consumption of fluoride from other sources such as foods or toothpaste. In short, it is the best of both worlds.

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

If your teeth have a worn appearance, it's possible you have a habit you're not even aware of: clenching or grinding your teeth. Also called “bruxism,” this destructive action causes your top and bottom teeth to come together or scrape past each other with a force that's many times what is normal for biting and chewing.

So what's normal? This can be expressed in terms of pounds. An adult usually exerts a force of 13-23 pounds to bite or chew food. But we have the potential to generate as much as 230 pounds of force, or 10 times what's normal. A “parafunctional” force of this magnitude applied repeatedly is bound to stress your teeth and other areas of your oral system. Besides wearing away the enamel of your teeth — and maybe even some of the softer dentin layer underneath — you may experience muscle spasms or pain in your jaw joints. Serious cases of wear can lead to “bite collapse” in which your face actually changes shape as your cheeks and lips lose support. This can make you look prematurely aged.

What can be done? To prevent further wear, we can fabricate for you a thin, plastic mouthguard that will protect your teeth at night or during times of intense stress. We can also recommend ways to temporarily relieve the discomfort that your grinding/clenching habits can cause. Heat and/or anti-inflammatory medication, for example, can be helpful.

If your tooth wear is minor (raggedness along the biting edge of a tooth or teeth) you may not need any restorative work. However, if tooth wear has already caused changes to your teeth and bite that you find aesthetically or functionally unacceptable, we can restore lost tooth structure in a variety of ways. Veneers and crowns are two examples.

If you have any questions about tooth wear or grinding habits, please contact us today to schedule an appointment for a consultation. You can learn more about this topic by reading the Dear Doctor magazine article “How And Why Teeth Wear.”

How many of these questions can you answer correctly? The more you know about nutrition and oral health, the healthier you are likely to be.

What are free sugars?
“Free sugars” is a term for sugars including refined cane, beet and corn sugar, which are added to foods or occur naturally in honey, syrups or fruit juices.

You probably know that foods with added sugars are not healthy for your teeth. What is the maximum recommended sugar intake for oral health?
The recommended daily limit for free sugar is 10 teaspoons per day. Note that one can of soda contains over 6 teaspoons.

If a sugary snack is bad for your teeth, what could you substitute that would be better?
Fresh fruits and vegetables would be a better snack. Fresh fruits contain fructose, a sugar that has not been shown to be harmful to teeth if eaten in reasonable amounts.

How can you get enough fluoride to guard your teeth against decay?
If your water supply does not contain fluoride, or if you usually drink bottled water, you may or may not be receiving enough fluoride from your toothpaste. We can assess if you are receiving enough fluoride by examining your teeth, testing your plaque and reviewing your past history of tooth decay. If you are having a problem with tooth decay, we can create fluoride trays for you so you can apply a fluoride solution to your teeth daily.

What is dental erosion and how is it different from tooth decay?
Some acidic foods, particularly drinks such as juices and sodas, wear away your teeth's outer coating (the enamel) when exposed to the teeth's surface. Erosion does not involve bacteria, the cause of dental caries (tooth decay).

Can certain foods stop acidity from attacking your teeth?
Yes, there are foods that reverse the increase in acidity that comes from eating free sugars. One of these is cheese. Cheese stimulates saliva in your mouth, and it contains high levels of calcium, allowing calcium to be added back to your teeth. Many vegetables and starchy whole grain foods require thorough chewing, which also stimulates production of saliva and guards against tooth decay.

We hope you learned some useful facts from this nutrition quiz. If you modify your habits so that you eat less free sugar; drink more water (preferably fluoridated), drink fewer juices and sodas; and snack on fresh fruits, vegetables, and cheese, you can count on having healthy teeth and gums.

Contact us today to schedule an appointment to discuss your questions about diet and oral health. You can also learn more by reading the Dear Doctor magazine article “Nutrition & Oral Health.”