Turn the water off!

With water shortages becoming more and more of a serious problem for more and more Americans in drought areas, conservation efforts must be stepped up if we expect our water supply to last. One of the easiest and simplest ways to do this is to turn off the tap while you brush your teeth! A person doesn’t actually need all of the water flowing out of a faucet head while brushing his or her teeth – a full cup of water will suffice just fine for an entire brushing session, including rinsing.

Whether you are concerned about ever-rising utility bills, the environment or even if you aren’t concerned with either, turning off the faucet when brushing your teeth is a simple, easy step everyone can take to make his or her lifestyle more sustainable. Just wet your toothbrush, brush thoroughly for two minutes and then rinse your mouth with water from a cup. Clean your toothbrush in the cup with the remaining water and then rinse off again with a short spurt of running tap water. Shake off the excess water on the toothbrush, rest your toothbrush in an upright position and let it air dry until next time.

Any homeowner or apartment-dweller can take a multitude of steps to save both water and money in their homes by installing a low-flow shower head in your bathrooms, replacing leaky faucets and placing a brick or a gallon-sized milk jug in his or her toilet reservoir. Newer washing machines (both clothing and dishes) also have “high efficiency” water ratings which guarantee that a specific amount of water will be used when running the appliance. Save the planet, save your wallet and save our water by turning off the faucet when you brush your teeth!

It is only natural to be curious about what teeth are made of and how they function within our mouth. The root anchors the tooth below the gum’s surface into the jaw bone, while the crown of the tooth extends out past the gum. The outermost hard shiny layer of the tooth is called enamel, and is the hardest substance in the body and functions as a food grinder. 92- 96% of enamel consists of minerals (hydroxyapatite, a phosphate and calcium salt) with the remaining part being water and organic material .

Lying just beneath the hard, shiny enamel surface of every tooth is the dentin layer. This layer of the tooth is composed mainly of calcified bony-like tissue (mostly hydroxylapatite), and like bone it contains collagen, water and other organic components (and is soft in consistency). Throughout the dentin layer are tiny passageways into the deep pulpal layer, connected to the enamel layer – these passages are known as tubules. Unlike enamel, dentin continues to modify throughout a person’s entire life. Dentin can grow or reform in response to a change in tooth conditions, such as tooth decay or attrition.

The innermost layer of the tooth is known as the pulpal layer. This inner sanctum of every tooth consists of nerves and blood vessels.  This pulp benefits the teeth in several ways: primarily, the pulp keeps the organic components of the teeth healthy and properly supplied with moisture and nutrients. The pulp also conduces senses such as heat, cold and trauma from the teeth into the body’s nervous system.

The important thing to remember about your tooth structure is that it is subject to change – when bacteria and other substances (like alcohol, smoke or even sugary liquid) is introduced into your oral environment, prompt cleaning (with a toothbrush and floss) is necessary to prevent premature decay. Once decay passes through the enamel layer into the dentin, decay will progress rapidly, even when not easily detectable from visual inspection. Only when the enamel has caved in and broken down does a cavity become visible. If the cavity was not treated early and the underlying dentin layer has already decayed (which can actually extend deep into the pulpal tissue), root canal therapy may be necessary, requiring a post and crown to restore the tooth. Ultimately, prevention is the best solution. Proper home care and regular dental check-ups can detect problems early, and are usually fixed easily.

Dental fluorosis staining from fluoride overexposure.

In 1977, The Institute of Medicine (IOM) specified adequate intakes of fluoride of 0.01 mg/day for infants through 6 months, 0.05 mg/kg/day for children beyond 6 months of age, and 3 – 4 mg/day for adults, to prevent dental caries. Upper limits (UL) of 0.10 mg/kg/day in children less than 8 years old and 10 mg/day for those older than 8 are recommended for prevention of dental fluorosis. Similar levels have been endorsed by the American Dental Association (ADA, 1994) and the American Dietetic Association (ADA, 2000). What does this all mean? Fluoride has an affinity for calcified tissues. The trace amount of daily intake of fluoride is beneficial, but too much of it can result in patchy or mottled looking teeth, known as dental fluorosis (or brittle bones, known as skeletal fluorosis).  Studies are needed for  health researchers to investigate the relationship between intake levels and human health. 75% of our daily fluoride intake is from water or beverages, like tea and juices.

The fluoride content of a water supply is often described by the term ‘parts per million’ (ppm). 1 ppm = 0.1 milligrams of fluoride per 100 milliliters of water. About 1 ppm seems to be the optimal level of fluoride for a drinkable water supply; a litre of such water would provide 1 milligrams of fluoride. At 2 ppm, mottling of tooth enamel may occur. The actual condition of ‘fluorosis’ or excessive deposition of fluoride in bones is only present after prolonged consumption of 20 to 80 milligrams of fluoride per day.

Repeated exposure to fluorine in naturally-occurring forms (such as in fruits and other produce) is one thing, but overexposing your child to fluoridated baby formula (identifiable by needing to add water to the formula) could put your child’s appearance – and bodily health – at risk. The key take-home message for parents is to avoid added  fluoridated liquids or even foods of any kind. No level of fluoride is perfectly safe, and ideally, we wouldn’t need to use it at all – however, fluoride’s teeth strengthening properties, when used in proper doses, can be a beneficial additive.

If your child does develop dark-spotted or mottled teeth after getting his or her primary teeth, pay close attention to their diet! Nutrition should be strictly monitored for fluoride ingestion (including toothpaste!) – if so, he or she should have perfectly clear, spotless permanent teeth erupting around age 5. Experts also agree that it is a good idea to test the water from your home water lines, to see if it is overly fluoridated. Simple take-home tests are available from your local water or health bureau, or can often give past and current fluoride level readings. Do your research to protect your child’s and your health.