Why is it important to replace missing teeth with restorations such as dental implants? You might be surprised to find that the damage caused by missing teeth is much greater than the simple gaps left in your smile.

As the years go by, teeth lost early in adulthood cause structural changes in a person's face. By age 45 changes in facial structure are already visible in the form of sunken cheeks. By 60, cheeks and lips lose their support, resulting in an aging look. This process continues and if the teeth are not replaced, much of the structural support of the person's face is lost.

These changes are caused by loss of bone. Although it may seem static, bone is actually living tissue that needs constant stimulation to maintain its form and density. With normal stimulation it is in a constant state of resorption (breaking down) and deposition (building up). Teeth provide the needed stimulation for the bone that surrounds them (called alveolar bone) as they meet each other during biting, chewing, and speech. When the stimulation continues, the bone continues to rebuild itself. Without this stimulation, the bone resorbs, does not build up again, and loses substance.

Without stimulation, alveolar bone loses width, height, and volume. Since your teeth and their surrounding bone support your chin, cheeks, and lips, this has a powerful effect on your appearance. It may also affect your ability to chew and to speak.

As alveolar bone diminishes, the next layer of bone also begins to resorb. This is the bone of the jaw itself. The lower part of the face begins to collapse, and the cheeks become hollow. This effect is especially noticeable for people with no teeth (edentulous).

Usually the first tooth to be lost, due to infection and decay, is a molar (back tooth). In the past, a missing single back tooth was frequently replaced by a fixed partial denture (FPD). A crown is provided for each of the two teeth on the sides of the gap, called abutment teeth, to support a false tooth in the middle. However, if they are not well cared for, the abutment teeth may be the next to succumb to decay.

Today the treatment of choice is an implant. A dental implant is a tooth-root replacement made of titanium, which fuses with the bone — making it very stable. Above the gums it is covered by a crown that looks like a natural tooth. The benefit of the implant is that it continues to provide stimulation to the alveolar bone, preventing bone loss.

Implants are also a good choice in the case of multiple missing teeth. They can be used to support bridges or false teeth (dentures). The results are an improved, younger appearance and better functionality.

Contact us today to schedule an appointment to discuss your questions about missing teeth. You can also learn more by reading the Dear Doctor magazine article “The Hidden Consequences of Losing Teeth.”

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.”

You may have noticed, as you get older, that the enamel of your teeth is looking worn in certain areas. Sometimes tooth wear takes the form of a minor chipping or fracturing at the incisal (cutting) edges of the teeth, or a loss of tooth material from the area near the gum line. In more severe cases, worn teeth look quite a bit smaller than they used to. Why does this happen?

Some wear with age is natural. But too much wear can interfere with your bite, expose more sensitive inner parts of the tooth to decay, and give you a more aged appearance.

There are things you can control that affect wear:

Your habits: Clenching or grinding habits, also called “bruxism,” is a major cause of tooth wear. The motion of teeth sliding over each other with forces that are beyond what's normal for biting or chewing causes a mechanical removal of tooth enamel. This can happen during sleep or periods of high stress. In either case there are therapies available, such as a thin, professionally made mouthguard that prevents your teeth from coming into contact with each other. Holding foreign objects, such as nails and bobby pins, between your teeth can also cause wear.

Your diet: Tooth enamel can be eroded (dissolved away) by acidic beverages, such as sodas, sports drinks and juices. Frequent snacking on sugary foods encourages the growth of oral bacteria that produce acid as a byproduct — also leaving your teeth vulnerable to tooth decay. Your saliva can buffer the effects of the acid in your mouth in about half an hour; if you consume these types of foods and beverages continually, there won't be enough time for this to work.

We can restore the appearance and function of worn teeth in a variety of ways. Porcelain crowns and veneers, for example, can re-establish the normal thickness and length of teeth while improving their color and giving you a more youthful appearance.

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

Sucking their fingers or thumbs makes young babies feel secure and is completely normal behavior. Babies have been observed to suck their fingers or thumbs even before they are born. But like many comforting habits, over-doing pacifier, thumb, or finger sucking habits may be harmful.

Stop Pacifier Use by 18 Months

Studies have shown that pacifier use after the age of two may cause long-term changes in a child's mouth. We recommend that pacifier use should stop by about 18 months. A pacifier habit is often easier to break than finger or thumb sucking.

Stop Thumb and Finger Sucking by Age Three

Most children naturally stop thumb and finger sucking between two and four years of age, but some children continue this habit much longer. This may cause their upper front teeth to tip towards their lips or to come into position improperly. It can also cause their upper jaw to develop incorrectly. The American Academy of Pediatric Dentistry recommends that children stop these habits by age three.

Use of Behavior Management to Encourage Quitting

We offer creative strategies for gentle ways to cut back and stop pacifier use, including behavior management techniques that use appropriate rewards given at predetermined intervals. Meanwhile, make periodic appointments with us to carefully watch the way your child's teeth and jaws develop.

When your child is old enough to understand the possible results of a sucking habit, just talking about what may happen to teeth as a result can often encourage him/her to quit. As a last resort, a mouth appliance that blocks sucking may be needed.

If you are worried about your child sucking a pacifier, thumb, or fingers, please visit us to put your mind at rest. For more information read “Thumb Sucking in Children” in Dear Doctor magazine. Contact us today to schedule an appointment to discuss your questions about children's thumb sucking.

Many youngsters look forward to finding a surprise under their pillow after a visit from the “tooth fairy.” This fable may comfort children who wonder why their first teeth come out. Parents need to know that losing baby teeth, also called primary or deciduous teeth, is completely normal, but at the right time and the right “space.”

A child's first set of teeth must be lost to create room for the adult or permanent teeth that have been forming beneath them. The buds of the permanent teeth grow within a child's jawbone just under the baby teeth. The tops, or crowns, grow first, followed by the roots. Then as the roots develop, the permanent teeth push the baby teeth above them up through the gum tissues. As this happens, the roots of the baby teeth are resorbed, or melted away.

With their roots gone, eventually the baby teeth become so loose that they can be easily removed or fall out on their own, making room for the adult teeth to appear. Sometimes, when a baby tooth is so loose, it can be wiggled out. It leaves a little bleeding gum tissue that heals easily. This is also normal.

Besides making sure the tooth fairy comes, parents need to be sure that their children are evaluated to determine whether baby teeth are being lost in the right sequence so they will act as guides for the adult teeth. If teeth are lost prematurely because of decay or trauma, it is important that space is maintained for the adult teeth when they come in.

Contact us today to schedule an appointment or to discuss whether your child's baby teeth are being lost in the right sequence and the adult teeth are coming in correctly. To read more about losing baby teeth, see the article “Losing a Baby Tooth: Understanding an important process in your child's development.”