If you engage in frequent air travel, you have probably experienced pain in your ears and sinuses related to pressure changes. The pain is caused by “barotraumas” (from baro meaning pressure — also the root of the word “barometer” — and trauma meaning injury) and is also called a “squeeze.” Divers also sometimes experience this discomfort or pain.

The cause of barotraumas is air pressure (or water pressure, in the case of divers) on the outside of your body that is not equal to the pressure inside your body. Normally when pressure outside your body changes, your organs such as your blood, bones, and muscles transmit the changes equally from outside to inside. Some structures in your body, such as your middle ear spaces and your sinus cavities (spaces in the facial bones of the skull), don't transmit the pressure as well because they are filled with air and have rigid walls. The maxillary (upper jaw) sinuses are pyramid-shaped spaces in the bone located below your eyes, on either side of your nose.

You have probably tried to stop such pain in your ears by yawning, chewing, or moving your jaw back and forth. These maneuvers, called “clearing,” allow air to move from the back of your throat into your ear canals so that the pressure can equalize. Similarly, your sinuses have small openings near their lower borders, so that you can clear pressure changes within them. If you have a head cold or flu and the membranes lining your sinuses are swollen and inflamed, they may close off the openings and make it difficult to clear these spaces. This can sometimes lead to intense pain.

Because the lower walls of these sinuses are adjacent to your upper back teeth, these teeth share the same nerves as the maxillary sinuses. This sharing sometimes causes pain felt in your back teeth to be perceived as pain in the sinuses, or vice versa. Pain felt a distance from its actual stimulus because of shared nerves is called “referred pain.”

Be sure to make an appointment with us if you experience pain in any of your teeth. Any defect in a filling or tooth can allow air to enter the tooth. It could be referred pain from your sinuses, or the result of pressure changes on trapped air within a filling or a tooth. Such pain, called barodontalgia (from baro meaning pressure, don't meaning tooth, and algia meaning pain) is an early sign of injury in a tooth.

Contact us today to schedule an appointment to discuss your questions about tooth and sinus pain. You can also learn more by reading the Dear Doctor magazine article “Pressure Changes Can Cause Tooth & Sinus Pain.”

When choosing among different ways to solve a problem, knowledge is power. In the case of selecting the best repair for a dental problem, count on your team of dental professionals to advise you. But you as the patient make the final decision, and it helps to thoroughly understand the different options, their advantages and disadvantages. If you have a chipped or broken front tooth, your likely repair options are composite resin or porcelain veneer.

Composite resins are synthetic materials that can be colored to match your natural teeth. The material is bonded to the tooth surface using adhesives that become part of the tooth structure, strengthening the original tooth. The repair looks as good as, or even better than, your original tooth. Such repairs can be used to restore small to large chips and other damage caused by decay or trauma.

Since the composite resin repair is applied directly to the tooth in the dental office, the repair can be made in a single appointment. You do not need to use a temporary repair while waiting for the final replacement to be made at a dental laboratory. This also means that the repair will cost less.

Another advantage of composite resin is that less of the healthy tooth needs to be removed to prepare the tooth to receive the replacement, since it bonds directly to the original tooth structure.

Porcelain veneers are very thin layers of tooth-colored porcelain that are also bonded to the tooth. They are usually recommended in situations with more serious injury or risk to the tooth, such as teeth that have been fractured, treated for root canal, or injured in contact sports.

Application of porcelain veneers may require more tooth preparation (in which more of the original tooth material must be removed) before the restoration can be bonded in position. Bonded porcelain veneers are likely to be longer-lasting than composite resins. They must be fabricated in a laboratory, so they require more than one visit and cost more.

All of the above are factors to consider in choosing composite resin or porcelain veneer to restore your chipped or damaged tooth. As usual in making such decisions, the final choice will depend on your individual situation.

Contact us today to schedule an appointment to discuss your questions about bonding to repair chipped teeth. You can also learn more by reading the Dear Doctor magazine article “Artistic Repair of Front Teeth with Composite Resin.”

When speaking about veneers in dentistry, many people wonder what they are really made from and how they produce such natural results. The answer is dental porcelain...and yes, it really is a type of porcelain or glass. Even though they are made of porcelain, not all porcelains are the same. This is one reason there can be such a wide price range when comparing porcelain veneer pricing from one dentist to another. For example, the quality of the dental porcelain used and the expertise of the dental lab artisans greatly impact the price of a veneer — just like other pieces of fine art, pricing depends upon the materials used and the artistry of the person creating them.

Dental porcelains are used to create veneers because of their near ideal optical properties in mimicking natural teeth in shine, opacity, and translucence. And when you combine these facts with the artistry of the lab technician and your dentist skill's in placing the veneers, you begin to understand how veneers are virtually undetectable in cosmetically-enhanced teeth. Another reason for using dental porcelain is that they can be made in many colors, shades and translucencies to enhance the optical properties and natural beauty of whiter, brighter, and visually appealing teeth. However, do not let the word porcelain, fool you when it comes to durability. While veneers are not as strong as natural teeth they are not so fragile that you should worry about breaking or damaging them with normal wear and tear. However, you should avoid biting into extremely hard substances; using your veneers as a tool in lieu of scissors, tweezers, or pliers (you should not use your natural teeth as a tool either!); and twisting your veneers when biting into harder substances.

To learn more about veneers, continue reading, “Smile Design Enhanced With Porcelain Veneers.” Or, contact us today to discuss your questions or to schedule a consultation.

Tooth sensitivity is an issue that can range from a slight twinge at times to downright excruciating pain. However, before we continue, understanding the cause of tooth sensitivity is helpful to both relieving and treating it.

Tooth enamel is inert in that it has no nerve supply and thus it protects the teeth from temperature and pressure changes — the main cause of sensitivity. Once it is compromised, worn thin, or exposed due to gum recession, it leaves the delicate nerve fibers within the dentin vulnerable to touch, acid, and temperature change. These nerve fibers most often grab your attention when they come in contact with heat, cold, or a “double whammy” combination of both cold and sweet. They also become sensitive to touch — even the bristles of a soft toothbrush can irritate exposed dentin.

As for the causes of tooth sensitivity, one common cause we see is aggressive brushing. Yes, too much brushing can be bad for you! To be more specific, excessive, improper brushing with a sawing back and forth motion can erode the gum tissues, expose, wear, and even groove the dentin. Another cause for sensitivity can be from the destructive process of tooth decay that eats through the enamel and into the dentin.

If you are experiencing tooth sensitivity or have questions about this condition, please contact us to schedule an appointment. Or you can learn more about this topic by reading the Dear Doctor magazine article “Sensitive Teeth.”

A number of factors can lead to dental caries (tooth decay). To find out if you are at high risk, ask yourself these questions.

Is plaque visible in my mouth?
Dental plaque is a whitish film of bacteria that collects on your teeth. If it is clearly visible, it means that there is a lot of it. Among the bacteria in the plaque are those that produce tooth decay, particularly in an acidic environment. (A normal mouth is neutral, measured on the pH scale, midway between the extreme acidic and basic ends of the scale.)

Do I have a dry mouth?
Saliva protects your teeth against decay by neutralizing an acidic environment and adding minerals back to the outer surface of enamel of your teeth, so reduced saliva is a high risk for caries. Many medications can cause dry mouth as a side effect.

Do I eat a lot of snacks, particularly unhealthy ones?
Frequently eating sugars, refined carbohydrates, and acidic foods promotes the growth of decay-producing bacteria. The more frequently you eat, the longer your teeth are bathed in sugars and acids. Acidic foods not only promote bacterial growth, they also directly cause erosion of the tooth's hard surface by softening and dissolving the minerals in the enamel.

Do I wear retainers, orthodontic appliances, bite guards or night guards?
These appliances are recommended for various conditions, but they tend to restrict the flow of saliva over your teeth, cutting down on the benefits of saliva mentioned above.

Do my teeth have deep pits and fissures?
The shape of your teeth is determined by your heredity. If your teeth grew in with deep grooves (fissures) and pits in them, you are at higher risk for bacterial growth and resulting decay.

Do I have conditions that expose my teeth to acids?
If you have bulimia (a psychological condition in which individuals induce vomiting), or GERD (Gastro-Esophageal Reflux Disease), your teeth may be frequently exposed to stomach acids that can cause severe erosion to your teeth.

Do I already have cavities?
Visible cavities can range from those only visible with laser technology or x-ray examination to those a dentist can see with a naked eye. If you already have small cavities, you are at high risk for developing more.

Do I have white spots on my teeth?
White spots are often the first sign of decay in a tooth's enamel. At this point, the condition is often reversible with fluorides.

Have I had a cavity within the last three years?
Recent cavities point to a high risk of more cavities in the future, unless conditions in your mouth have significantly changed.

If you have any of these indications of high risk, contact us today and ask us for suggestions for changing the conditions in your mouth. You can also learn more by reading the Dear Doctor magazine article “Tooth Decay.”