Be certain you decrease citrus and acidic frequency. Do not eat or drink citrus over long periods of time and swish with plain water (no lemons or things in it) immediately following or even during consumption of the citrus. Use Sensodyne Essential Care, but remember that it is not tartar control, so brush longer (not harder and NO hard bristles). Do not eat ice.
Using a desensitizing toothpaste does help with sensitivity due to exposed root and/or dentin. However, you will need to visit your dentist for an exam as some sensitivity occur due to cavities. Sensitivity to hot can also indicate an issue with the tooth pulp. To rule out these scenarios a visit with your dentist will help. Using desensitizing toothpaste for exposed root surface or dentin will help, it takes around 4-6 months to feel the effect and you will need to use this toothpaste on a permanent basis! Hope this helps !
Dr. Gerry Curatola
Hope you find some relief for the sensitivity, all the best.