There are many products that can reduce sensitivity and pain causes by thermal changes. Many toothpastes (sensodyne, crest sensitivity, colgate sensitive, etc.) have products that help to "desensitize" the tooth and sometimes even stimulate the formation of a protective layer to block the sensitivity. Often times these products take up to 2 months to produce a result.
There are many other prescription products that only your dentist can dispense or prescribe for you. If you have sensitivity please discuss this with us and there might be a product that we can use to help you reduce your discomfort and increase your quality of life!