Why are our teeth sensitive to cold?

"Every spring, quite a lot of people complain about their teeth being more sensitive to cold. Why is that? In the spring, the demand for fresh strawberries increases, but the strawberries are mostly grown in greenhouses and therefore have a higher acidity content than those grown organically. The acid from the strawberries reduces the insulating mineral content in the tooth and therefore, the teeth become sensitive. To rebuild the insulation protection, I recommend brushing your teeth with SWISSDENT Crystal before going to sleep.”⠀⠀⠀⠀⠀⠀⠀⠀⠀
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   - Dr.med.dent Vaclav Velkoborsky, Zürich⠀⠀