We all know the feeling. A sharp unexpected pain when you bite into your sandwich, take a sip of water or a breath on a cool day. It does not feel good and can even make you wince. So, the question is- what happened? Why are my teeth suddenly sensitive? While tooth sensitivity can happen for many reasons the root cause generally can be explained by one of a handful of common issues, which your dentist can expertly help identify by using a method called differential diagnosis. Differential diagnosis is a process that medical professionals use to correctly identify the cause of tooth pain in an instance where multiple alternatives are possible. First, your dentist will need to know if the pain is associated with multiple teeth or one tooth. There are specific reasons for one or a few teeth to suddenly become sensitive such as a cavity, crack, fracture, receding gums, or an abscess. If one or more of your teeth have any of these issues then your dentist will help you identify the next steps to take and treatment options to help you get back on track with the goal of a …