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1.Fact: Exposure to acidic foods like lemons causes tooth decay

Acidic foods such as lemons, citrus juices, or soft fruit drinks don’t cause cavities, but they may be putting your enamel in danger. Acids can cause erosion of the tooth-protecting enamel, thus weakening the tooth. If you lose the enamel's protection and expose the underlying dentin, the tooth is more prone to decay.

2.Myth: Children are a lot more likely to get cavities than adults

With the help of fluoride in the water or toothpaste, preventative care and the judicious use of sealants, tooth decay in school age children has been dramatically reduced. However, there’s been an increase in cavities in older people, for a number of reasons. For example, some medications dry out the mouth and reduce saliva. Saliva is vital in fighting tooth decay because it helps neutralise acids, has a disinfectant quality, washes away bacteria, and helps prevent food from sticking to the teeth.

3.Myth: Aspirin placed next to a tooth will help toothache

Swallowing aspirin is what helps relieve toothache pain. Since aspirin is acidic, placing it beside the tooth can actually burn your gum tissue, causing an abscess.

4.Myth: All fillings eventually need replacing

An amalgam or composite filling needs to be replaced if it breaks down or a cavity forms around it, or if the tooth fractures. If none of those problems occur, you may be able to keep the same filling for life. Fillings do have a life expectancy, but much depends on things like tooth wear and oral hygiene habits. If you brush your teeth properly at least twice a day with a fluoride toothpaste, and floss or use an interdental cleaner at least once a day, you’ll have less tooth decay and your fillings may last longer.

5.Myth: If you have a cavity, you'll know it

That really is a myth. Mild tooth decay does not cause symptoms. The pain we associate with cavities comes when tooth decay is more advanced and causes damage to the nerve. Allowing tooth decay to advance can lead to much more complicated and expensive dental procedures, like root canal treatment and crowns. That’s why regular dental check-ups are so important. Also, once a cavity starts, it doesn’t repair itself. It will always grow once you get to a point where you can’t clean it out any longer. Once decay penetrates the dentin of the tooth -- below the enamel -- the cavity will continue to grow.

6.Myth: Cavities are the prime reason for root canal treatment

You need root canal treatment if the nerve inside a tooth is damaged. Untreated cavities may eventually lead to nerve damage, but there are other causes. Cracks, fractures, or other types of trauma to the tooth can also cause nerve damage, and clenching and grinding can traumatise a tooth severely enough to need root canal treatment.

7.Fact: Tooth enamel is the hardest substance in the human body; however, we do NOT recommend that you use your pearly whites to open bottles!
8.Fact: 6 is the magic number–magic number of feet away from your toilet you should store your toothbrush in order to avoid airborne particles from toilet flushing making their way to your bristles, yuck!
9.Fact: The common practice of placing a cap on your toothbrush is actually more detrimental–bacteria favor the moist environment, which increases reproduction.
10.Fact: In Medieval Germany, the only cure for a toothache was to kiss a donkey.
11.Fact: Like your fingerprints, everyone has a unique set of teeth. Even identical twins have different “dental fingerprints”!
12.Fact: Contrary to popular belief, George Washington’s famous dentures weren’t made from wood. His four pairs of custom chompers were crafted from gold, ivory, lead and a mixture of human, donkey, and hippopotamus teeth (take care of yours and you won’t have to think about it!).
13.Fact: The average person spends about 48 seconds per day brushing their teeth, but dentists recommend at least 2 or 3 minutes.
14.Fact: The Romans, in 200 AD, used pretty impressive dental technology! They restored cavity-ridden teeth with gold crowns, and utilized fixed bridgework to fix gaps from missing teeth. They also used a form of toothpaste concocted from honey and crushed eggshells.
15.Fact: Sports-related injuries account for approximately 10 million missing teeth per year, so make sure you wear a mouthguard, if you or your little ones are athletes.