Tooth sensitivity is a common problem for most people. Our teeth can be greatly affected by hot, cold, sweet, and sour food or drink. Over-enthusiastic brushing, recession of gums, gum disease (periodontitis) all can expose the soft, porous structure of the tooth (dentin), making it susceptible to external stimuli. Pain can be mild and tingly or sharp and intense. This symptom sometimes is a sign for more serious diseases. Whenever you are suffering from pain of sensitivity, you should go see your dentist before it starts to persist or worsens.
A review of brushing techniques and diet can help reveal causes of sensitivity. Avoid over-brushing because it can cause damage to your teeth and/or gums. Sensitivity protection toothpaste works by blocking the opening of the exposed dentin or by preventing the transfer of the pain signal from the nerve to the brain. You should start to feel relief by using sensitivity protection toothpaste after approximately two weeks. If you stop using the anti-sensitivity toothpaste prior to that, the sensitivity may continue. Also, some prescribed desensitizing agents may help you. Consult your dentist about it.