Thanks for posting your query.
Sometimes, due to presence of thin enamel on the tooth in certain areas, the shock
like sensation can occur when the tooth comes in contact with very cold
food/beverages. Even air can cause the sensation if the mouth is open.
Assuming that you do not have a sinus
problem, then you can ask your dentist
to apply a desensitizing agent on the concerned tooth. This will block the tubules resulting in reduced sensation which will eventually cease.
You may also use desensitizing tooth pastes like sensodent/shy NM etc for relief.
Hope you feel better soon.