White spots on teeth can be a genetic issue, or appear as a result of mineral deficiency as teeth grow in (dentition). What’s more, they can signify that a cavity is beginning to form, particularly the kind that occurs inside of a tooth, while the enamel on the outside looks healthy and unharmed.
White spots also occur as a result of tooth dehydration after a longer procedure or whitening. Stains that appear after a procedure often go away on their own when the procedure is finished, once it becomes coated in saliva.