Many of you may have experienced tooth sensitivity associated with cold beverages or foods or even cold air. You might even be sensitive to the touch on some areas of your teeth. This may be due to gingival recession, a situation where the gum has receded away from the crown of the tooth exposing the root surface of your tooth. The root of your tooth does not have the enamel layer protecting its outer surface. Instead, the outermost layer of the root surface is called cementum, a thin softer layer that can be easily removed. Even overly aggressive tooth brushing or using a medium or hard bristled toothbrush can ...