not contain the chemical sodium lauryl sulphate, commonly used in toothpaste, which can be a skin irritant. the function of sodium lauryl sulphate is to form suds when teeth are brushed. those with dentures may also use denture cleaner which can also come in powder form. fluoride toothpaste use in young children when brushing teeth, using toothpaste that contains fluoride is recommended. there are different recommendations for the amount of toothpaste used based on age: for children under 3 years of age: use a small smear or rice grain amount of fluoridated toothpaste if the child is at high risk for cavities. for children 3 to 6 years old: use no more than a pea-sized amount of fluoridated toothpaste toothbrushing should begin as soon as teeth begin to erupt into the mouth and should be done twice daily (morning and night). it is very important that caregivers supervise children’s brushing to minimize swallowing of toothpaste. (ada) for children at high risk of developing cavities, a dietary fluoride supplement (ada) or professionally-applied fluoride varnish can be considered. fluoride is a safe and effective way to prevent and control cavities.