If children under the age of six ingest high levels of fluorides during the period of tooth formation, they can develop dental fluorosis. This condition causes white areas or brown stains to appear on the teeth, which affects the appearance of the teeth but not their function. However, excessive intakes of fluoride can cause damage to tooth enamel, resulting in tooth pain and some problems with chewing. The risk goes away once teeth are formed, at age 6 or 7. Health Canada has set labelling requirements for dental products (such as toothpaste) that contain fluoride because young children have a tendency to swallow these products.
Considerations for Adults
High levels of fluorides consumed for a very long period of time may lead to skeletal fluorosis. These levels are much higher than those to which the average Canadian is exposed daily. Skeletal fluorosis is a progressive but not life-threatening disease in which bones increase in density and become more brittle. In mild cases, the symptoms may include pain and stiff joints. In more severe cases, the symptoms may include difficulty in moving, deformed bones and a greater risk of bone fractures.
Mouthwash danger - High alcohol mouthwashes may raise a person’s risk of developing oral cancer by as much as 60%. Danger threshold: Mouthwashes with an alcohol content of 25% or higher (as indicated on their labels) have been implicated in mouth, tongue and throat cancers. Theory: Alcohol acts as a solvent in the mouth, making tissues more vulnerable to carcinogens.
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