Which teeth whitening method is effective?
Which whitening method is effective? In fact, the color of the tooth itself is determined by both “enamel” and “dentin”.The outermost layer of teeth is “enamel”, The inner layer of enamel is “dentin”. Therefore, you must distinguish whether the enamel is damaged, and then consider which method to whiten teeth . Now, most teeth whitening products use chemicals to bleach teeth, which makes many people worry if it harmful to health? If you do not want to use chemicals, Is there a healthy [...]
