Posts for: August, 2012
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.”
Nearly every parent and caregiver has experienced that almost instantaneous sick feeling when they see that their child has been injured, especially when it is an injury to the mouth and teeth. For some, it is just a bloody lip; however, if the accident chipped a tooth, then you may have a completely different situation on your hands. If the nerve of the tooth has not been damaged, you needn't worry too much — a composite (plastic) tooth-colored restoration that is actually bonded to the tooth is an ideal material for repairing most broken or chipped teeth. See us as soon as possible to assess the extent of injury, so that proper and appropriate action can be taken.
An additional reason why bonding with composite resin may be the ideal choice for repairing a child's chipped tooth is that it can be custom created in virtually any shade so that it perfectly matches the damaged tooth and the surrounding teeth. It is also far less expensive than a crown, an important factor to consider when repairing a primary (baby) tooth that will eventually fall out to make room for a permanent tooth. If the injury is to a permanent tooth, a composite resin still may be ideal to use as a restoration until your child or teenager has stopped growing or playing contact sports. This is because your teenager may be too young for a more permanent restoration such as a crown or porcelain veneer.
An important, proactive step you can take to be prepared for the next time your child has a dental injury is to download Dear Doctor's Field-side Pocket Guide for Dental Injuries. This handy, quick reference guide is a must have for athletes, parents, caregivers, teachers, coaches or anyone who is often in an environment where a mouth injury is likely to occur. Knowing what to do and how quickly you must respond can make the critical difference between saving and losing a tooth.