On occasion a parent or teenager will ask us at what age is it okay for teens to whiten their teeth. Dr. Weller explains in a segment on WGN what must be considered before bleaching the teeth of teens and youth, he also explains the risk associated with it.
Dr. Weller explains that the risk resides in the shrinkage of the never during tooth growth which occurs throughout teenage years (ages 12-17). Once their permanent teeth have fully developed the nerves begin to grow in size, minimizing tooth sensitivity. Applying tooth whitening before the permanent teeth have fully developed puts teens at risk of slight but reparable nerve damage caused by the tooth bleaching gel. The more frequent the teen bleach their teeth and the higher the concentration the bleaching agent, the more brittle to the tooth and nerve becomes.
According to Dr. Weller, "no one under the age of 13 should have teeth bleaching" and before doing so the parent should consult their dentist.