Tooth sensitivity, that sharp, sudden discomfort when you eat or drink something cold, hot, sweet or acidic, is one of the most common complaints we see. In most cases it has a clear cause and effective treatments are available.
Sensitivity occurs when the inner layer of the tooth, the dentine, becomes exposed. Dentine contains tiny channels that lead to the nerve of the tooth. When the protective outer enamel wears away, or when gum recession exposes the root surface which has no enamel at all, these channels are exposed to temperature, pressure and certain foods. The result is that familiar sharp sensation.
Enamel erosion caused by acidic food and drink gradually wears away the outer layer of the tooth. Brushing too hard or brushing immediately after consuming acidic food or drink can accelerate this. Gum recession exposes the root surface and can result from gum disease, overly vigorous brushing or simply ageing. Tooth grinding, known as bruxism, wears down enamel over time and many people who grind their teeth do so at night without realising it. Cracked teeth can cause sensitivity particularly when biting, and recent dental treatment such as fillings, whitening or crown preparation can cause temporary sensitivity that settles within a few weeks.
Sensitive toothpaste containing potassium nitrate or stannous fluoride can reduce sensitivity over time with regular use. Allow it to work by not rinsing immediately after brushing. Fluoride treatments applied professionally can help remineralise enamel. Reducing acidic food and drink, or rinsing with water after consuming them, can slow progression. Where sensitivity is caused by gum disease, grinding or a structural issue such as a cracked tooth, addressing the underlying cause is essential.
If sensitivity is affecting your quality of life please do not simply put up with it. There is nearly always something we can do to help. We can identify the cause at a check-up and recommend the most appropriate treatment. To find out more about our services or to book an appointment, here.