What do burnt eggshells, crushed bones, brick dust and ox-hoof ashes have in common? Are they things you discovered in your kid's pocket? Ingredients in a witches brew? Funky organic compost materials?

It may be hard to believe — but they're all substances that were once used to make toothpaste, from ancient Egyptian concoctions through 18th century British blends. But don't worry: You won't find any broken crockery or ashes inside a modern tube! Today's toothpastes are scientifically formulated to be effective in removing plaque, which helps prevent tooth decay and gum disease (not to mention bad breath.) So what makes them work so well?

One class of ingredients found in all toothpastes is abrasives — also called cleaning and polishing agents. These slightly grainy substances make the mechanical action of brushing more effective. But unlike crushed bones, or the harsh, gritty particles of yore, today's abrasives are designed to remove stains and bacterial films without damaging tooth structure.

Next come detergents, which account for the foam you see when you brush vigorously. Detergents (sometimes called “surfactants”) help to break up and wash away materials that would otherwise be difficult to dissolve. An ingredient called sodium lauryl sulfate, which is also found in many shampoos, is probably the most common detergent used in toothpastes.

Fluoride, first included in toothpaste in 1914, is another common ingredient. In fact, all toothpastes that carry the seal of the American Dental Association contain it, typically in the form of sodium fluoride, stannous fluoride or sodium monofluorophosphate. It has been proven to make tooth enamel stronger and more resistant to decay.

In addition to these primary components, toothpastes generally contain flavorings to make them more palatable, and binders and preservatives to hold them together and keep them from drying out. Special-purpose toothpastes — like those designed to whiten teeth, prevent tartar, or help reduce sensitivity — have added ingredients.

But regardless of what's in your toothpaste, there's one thing you should remember: It's not the paste (or the brush) that keeps your teeth and gums healthy — it's the hand that holds it! Brushing once or twice a day, using a soft brush with the proper technique (and your favorite toothpaste!) is probably the most important thing you can do at home to enhance your overall oral health.

If you have questions about toothpastes or oral hygiene, please contact us or schedule an appointment for a consultation. You can learn more in the Dear Doctor magazine article “Toothpaste — What's In It?”

Do you clench your jaw or grind your teeth? Bite your nails? Chew on pencils or toothpicks? Or, heaven forbid, unscrew hard-to-open bottle caps using your precious pearly whites?

Over time, habits such as these — referred to in dentistry as “parafunctional” (para – outside; functional – normal) or beyond the range of what nature intended — can inflict excessive wear and tear on your teeth. Besides the impact damaged teeth can have on your smile, so called “tooth to tooth” and “tooth to foreign object” behaviors can cause physical problems, such as jaw joint and muscle pain, headaches, earaches, and even neck and back pain.

Use of Excessive Force

Parafunctional behaviors exert an abnormal amount of force on your teeth — up to 10 times the amount used for biting and chewing. Tooth grinding or “bruxism” (from the Greek word brykein – “gnash the teeth”) is particularly detrimental and is commonly seen in individuals who are experiencing a stressful time in their life. Some medications can also trigger it. Since bruxism often occurs while people sleep, it's possible to be unaware of it unless a partner comments (it can be noisy!) or a dental professional points out the tell-tale signs of wear.

To counter the adverse effects of nocturnal tooth grinding our office can create a customized night or occlusal (bite) guard. Typically fashioned from a hard, clear “processed acrylic” (wear-resistant plastic), this type of guard is amazingly inconspicuous. It is made to fit over the biting surfaces of the upper teeth only and is thinner than a dime. When it is worn, the lower teeth easily glide over the upper teeth rather than chomping into and gnashing with them, which minimizes the likelihood of erosion, chipping and uneven or excessive wear of the biting surface of the teeth. The guard is so unobtrusive, that some people even wear it as they go about their daily activities.

Remember: In addition to proper dental hygiene, you can help keep your teeth healthy by using them wisely!

If you would like more information about parafunctional habits like bruxism and ways to protect your teeth, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine articles “Stress & Tooth Habits” and “How And Why Teeth Wear.”

Your teeth are under constant attack from bacteria that normally live in your mouth. When these bacteria thrive, they create acid that begins to dissolve the minerals in your enamel (the outer layer of your teeth). In your defense, your saliva protects against these bacteria and adds minerals back to your enamel. Let's take a look at this ongoing battle, and what you can do to sway it in a positive direction.

The outer covering of your teeth, the enamel, is made mainly of the minerals calcium and phosphate. The enamel protects the interior layer of your teeth, the dentin, which is similar in composition to bone. Although it is the hardest substance in your body, the enamel is still vulnerable to attack.

Your mouth is normally full of saliva, which washes over your teeth and maintains a balance between acids and bases. The terms “acids” and “bases” refer to a scientific measurement, the pH scale. Your mouth's pH is usually in the middle of the scale — neither acidic nor basic, but neutral. This is important in controlling the bacteria in your mouth.

You may be surprised to know how many bacteria live in everyoneâ??s mouth. More bacteria live in a single mouth than the number of people who have ever lived on earth. Some of these bacteria can cause tooth decay. Let's call them “bad bacteria.”

When the bad bacteria attach themselves to dental plaque — a film that builds up on your teeth every day — they begin to consume sugars that are in your mouth from foods that you have eaten. As the bacteria break down these sugars and turn them into energy, acid is produced as a by-product. This turns the saliva from neutral to acidic.

At a certain level of acidity, minerals in your enamel start to dissolve. This is called “de-mineralization.” It means that more calcium and phosphate are leaving the tooth's surface than are entering it. Early de-mineralization of the enamel shows up as white spots on a tooth.

Fortunately, healthy saliva can return calcium and phosphate to the enamel, or re-mineralize it. De-mineralization and opposing re-mineralization are constantly battling in your mouth. However, if too much enamel is de-mineralized, bacterial acid can go on to attack the next layer of your teeth, the dentin. As this process continues, you develop a dental cavity.

How can you protect your teeth? The first level of defense is regular removal of plaque, so that the bad bacteria do not get a foothold. In an office visit we may also recommend products such as sealants, antibacterial agents, topical fluoride, calcium and phosphate supplements, pH neutralizers, special toothpaste and rinses, which may help your particular situation.

Contact us today to schedule an appointment to discuss your questions about tooth decay. You can learn more by reading the Dear Doctor magazine article “Tooth Decay — The World's Oldest & Widespread Disease.”

Nightly snoring can be a sign of a dangerous condition called sleep apnea (from “a” meaning without and “pnea” meaning breath). When someone snores the soft tissues in the back of the throat collapse onto themselves and obstruct the airway, causing the vibration known as snoring.

If the obstruction becomes serious, it is called obstructive sleep apnea, or OSA. In such cases the flow of air may be stopped for brief periods, causing the person to wake for a second or two with a loud gasp as he attempts to catch his breath. This can cause heart and blood pressure problems, related to low oxygen levels in the blood. The obstruction and mini-awakening cycle can occur as many as 50 times an hour. A person with this condition awakens tired and faces the risk of accidents at work or while driving due to fatigue.

Studies show that sleep apnea patients are much more likely to suffer from heart attack, congestive heart failure, high blood pressure, brain damage and strokes.

What can be done to treat OSA?
Snoring, apnea, and OSA occur more frequently in people who are overweight. So start with losing weight and exercising.

At our office, we can design oral appliances to wear while sleeping that will keep your airway open while you sleep. These appliances, which look like sports mouth guards, work by repositioning the lower jaw, tongue, soft palate and uvula (soft tissues in the back of the throat); stabilizing the lower jaw and tongue; and increasing the muscle tone of the tongue.

Another approach is to use a Continuous Positive Airway Pressure (CPAP) bedside machine. These machines send pressurized air through a tube connected to a mask covering the nose and sometimes the mouth. The pressurized air opens the airway so that breathing is not interrupted.

Much less frequently, jaw surgeries may be recommended to remove excess tissues in the throat. These would be done by specially trained oral surgeons or ear, nose and throat specialists.

Diagnosis and treatment of OSA is best accomplished by joint consultation with your physician and our office. Contact us today to schedule an appointment to discuss snoring and OSA. You can learn more by reading the Dear Doctor magazine articles “Sleep Disorders and Dentistry” and “Snoring and Sleep Apnea.”

You probably know that tooth decay results when the bacteria in your mouth release acids after consuming sugars. After you eat sugars, particularly the type of sugar known as sucrose, increased acid in your mouth begins to dissolve the enamel and dentin in your teeth, and you end up with cavities.

What are the Types of Sugars?
Modern diets include several types of sugars. Most of these are fermented by oral bacteria, producing acids that are harmful to teeth.

• Sucrose (commonly known as sugar)
• Glucose (released from starch consumption)
• Lactose (milk sugar) — Less acid is produced from this type of sugar
• Fructose (found naturally in fruit and also added to many processed foods)
• Maltose

Recommended intake of “free sugars” is no more than 10 teaspoons per day. Note that a can of soda contains over 6 teaspoons! Soft drinks are the largest source of sugar consumption in the U.S. In 2003, for example, Americans drank an average of 52 gallons of soft drinks. Average per capita consumption of all sugars in the U.S. was 141.5 pounds (64.3 kg) one of the highest levels in the world.

Sugar substitute xylitol (which is chemically similar to sugar but does not cause decay) can be part of a preventive program to reduce or control tooth decay. Chewing gum sweetened with xylitol stimulates saliva flow and helps protect against decay.

Sugars Released from Starches
Starches are foods like rice, potatoes, or bread. When you eat refined starches, such as white bread and rice, enzymes in your saliva release glucose. However, these foods have a lower potential to produce decay than foods with added sugars. When sugars are added to starchy foods, as in baked products and breakfast cereals, the potential for decay increases.

Less refined starches such as whole grains require more chewing and stimulate secretion of saliva, which protects from harmful acids.

The Case for Fruit
Fresh fruit has not been shown to produce cavities, so it makes sense to eat them instead of sugary desserts and snacks. Dried fruit is more of a problem because the drying process releases free sugars.

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.”