#ODC_tips Fluoride helps prevent tooth decay by making the tooth more resistant to acid attacks from plaque bacteria and sugars in the mouth. It also reverses early decay. In children under 6 years of age, fluoride becomes incorporated into the development of permanent teeth, making it difficult for acids to demineralize the teeth. Fluoride also helps speed remineralization as well as disrupts acid production in already erupted teeth of both children and adults.
Reasons why dentists take x-rays: Look for decay between teeth: Sometimes decay isn't visible to the naked eye and exists in areas the dentist cannot see. Check for bone loss associated with gum disease: Gum disease can cause bone loss and an x-ray will show how advanced it is. Check for decay under fillings: Sometimes decay under fillings can occur and can only be seen with an x-ray.