You could have "sensitive teeth," a common condition that may improve over time with good dental hygiene. So, see your dentist for evaluation and routine care.
Just one last question:
Do you take a medication for osteoporosis or other bone disease, such as alendronate (Fosamax), risedronate (Actonel), ibandronate (Boniva), or the intravenous medication zoledronic acid (Zometa or Reclast)?