President Adams did not call for a declaration of war, but hostilities began at sea. At first, American shipping was almost defenseless against French privateers, but by 1800 armed merchantmen and U.S. warships were clearing the sea-lanes. Despite several brilliant naval victories, war fever subsided.
All upper molars have 3 roots while lower molars have 2 roots. All premolars along with the other teeth have 1 root. Tooth number 5 is a premolar and has 1 root. Also if it is hurting while eating then you need to get the height of the crown increased.
Any trauma to a tooth can cause a tooth to need a root canal. Trauma can be grinding your teeth, having a filling done, injury ,biting on something hard, etc. Teeth have live tissue inside of them and this is what dies over time and sometimes suddenly. Kathy Frazar, DDS, FAGD.