Band cells are the immature form of neutrophils and are produced rapidly during an infection. A large percentage of band cells in a venous blood sample indicate an infectious process occurring in the body.
Sensitivity to temperature is a skin sense that is related to the human need to maintain internal temperature balance or thermal homeostasis. Temperature sensitivity is important in protecting one's self from intense temperature that may cause damage to the body.
The tooth or teeth simply need time to recover from the trauma. It's when the pressure sensitivity is persistent that you should suspect something like a break, crack, or decayed tooth and should see your dentist. Sensitivity to temperature usually means teeth have been compromised in some way.