Sealants are thin, plastic coatings painted onto the chewing surfaces of the back teeth, or molars.
reduces the ability of bacteria to make acidĭental sealants are another good way to help avoid a cavity. prevents mineral loss in tooth enamel and replaces lost minerals. It can even reverse, or stop, early tooth decay.įluoride works to protect teeth. A cavity is permanent damage that a dentist has to repair with a filling.īack to top How can we help teeth win the tug of war and avoid a cavity?įluoride is a mineral that can prevent tooth decay from progressing. Over time, the enamel is weakened and destroyed, forming a cavity. Enamel can repair itself by using minerals from saliva, and fluoride from toothpaste or other sources.īut if the tooth decay process continues, more minerals are lost. 
Tooth decay can be stopped or reversed at this point. A white spot may appear where minerals have been lost. When a tooth is exposed to acid frequently - for example, if you eat or drink often, especially foods or drinks containing sugar and starches - the repeated cycles of acid attacks cause the enamel to continue to lose minerals.
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