How can i prevent sensitivity to cold in my teeth?

Preventive measures: Many people with cold sensitivity throughout the mouth may have bruxism issues which means clinching or grinding of teeth which triggers sensitivity. Reduction of bruxing habit will reduce sensitivity. A bite splint may be needed to achieve this. Cavities will cause sensitivity and pt may need dental services. Sometimes sensitive toothpaste will help reduce sensitivity.

Sensodyne: Sensodyne is a simple way to do this. Use it like an ointment and rub it all over your sensitive teeth and let it soak in. After a few days, the cold sensitivity should be gone. If not, see your dentist to make sure it isn't something more serious. You can also try oil pulling with coconut oil. It tends to re-mineralize the outer tooth structure as well.

Tooth brushing: Cold sensitivity can be caused by improper brushing and clenching or grinding you teeth. An electric toothbrush(sonicare) will correct the first possibility and a night guard or bite guard can minimize the grinding.