what causes tooth sensitivity

Tooth sensitivity is quite a common issue and can indeed arise from a variety of causes beyond just gum recession and enamel wear, though those are definitely significant contributors. To understand what’s happening, it’s important to know that the hard enamel on the outside of the tooth protects the softer, inner dentin where the nerves reside. When enamel is compromised, whether through abrasion or acids like those found in soda, it exposes the dentin and makes your teeth more sensitive to temperature changes and certain foods. Your mention of drinking a lot of soda could certainly be part of the problem, as the acids can erode enamel over time. Beyond enamel erosion and gum recession, other causes could include tooth decay, cracked teeth, old or defective fillings, and even recent dental procedures, which might have temporarily irritated your nerves. You mentioned not grinding your teeth, but sometimes people do this in their sleep without realizing, which is another potential cause. Stress itself doesn’t directly cause sensitivity, but it can lead to habits like bruxism (teeth grinding/clenching) which are linked to it. Since you’ve switched toothpaste already without relief, you might consider trying one specifically formulated for sensitivity, which often contains compounds like potassium nitrate, which can block the transmission of pain signals to the nerve. Regular dental check-ups can also help identify if there’s a specific dental issue that needs to be addressed. Additionally, modifying your diet to reduce acidic or sugary foods and drinks might help. Use a soft-bristled toothbrush and avoid aggressive brushing, which can wear enamel down further. If you continue to experience this discomfort, a thorough examination by a dentist would be advisable to rule out any hidden issues or recommend more specific treatments, like fluoride treatments or a mouthguard for night grinding.