Arden G. Christen DDS MSD MA FACD


Dentin

Dentin is the middle layer of a tooth. It is made of hard minerals and protects the pulp (the inner core of the tooth) from external conditions such as heat and cold. Dentin is covered by enamel above the gum line (the crown of the tooth). Dentin in the root of the tooth is covered by hard connective tissue called…

Tooth decay

Tooth decay is damage to the enamel of your teeth. It leads to cavities that can affect the deeper layers of the tooth.

Proper angle for brushing teeth

Place the toothbrush at a 45-degree angle where the teeth meet the gums. Press firmly, and gently rock the brush back and forth using small circular movements. Do not scrub.

Tooth Decay

Discusses tooth decay and cavities (dental caries). Covers preventing decay by brushing and flossing. Discusses increasing risk of tooth decay by letting a child sleep with a bottle in his or her mouth. Discusses reversing slight decay by using fluoride.

Teeth Whitening

Teeth whitening is not a medical procedure—it does not result in healthier teeth—but it can result in whiter teeth and a brighter smile. This in turn can make people feel better about themselves. There are two types of teeth whitening: Bleaching your teeth changes the color of the tooth enamel and removes both surface…