Tooth enamel may be the hardest tissue in the body, but it is still susceptible to the erosion that occurs as a result of brushing teeth too hard. Excessive consumption of fruit juices and soft drinks can also lead to erosion of the tooth surface, which begins with gum recession and tooth sensitivity. The tooth enamel will eventually show signs of erosion that usually takes the form of horizontal notching at the gumline. Eventually, the enamel may wear through, and the underlying dentin becomes exposed, which leads to severe tooth sensitivity. Fortunately, this problem can be adequately addressed with resin bonding, which fills in the eroded tooth with a resin material that exactly matches the original tooth color.
P.S. To circumvent abrasion caused by tooth-brushing that can lead to enamel erosion, patients should use soft-bristled brushes and avoid exerting too much pressure on the handle of the toothbrush.