If you practice good oral hygiene, but your teeth are sensitive, start to use toothpaste made specifically for sensitive teeth. There are several different brands available to you, but they all have a special formula that blocks the nerves of the tiny tubes in the dentin. The use of this toothpaste should not be short lived nor inconsistent—it should be used long-term and consistently to have the best results.
Another simple way to reduce tooth sensitivity is to be careful of what you eat and drink. Foods that are highly acidic can wear away tooth enamel. These foods include fruit juices, soft drinks, and fruits with high sugar (i.e. oranges). The more frequent you eat or drink these things, the more sensitive your teeth will be due to your enamel constantly being attacked. Try to limit the intake of these foods, and brush no earlier than twenty minutes after eating them. If you brush before the twenty minute wait period, your enamel may be damaged more. Enamel loss is irreversible, so it is extremely important to be cautious about what you consume.