What should you know before reaching to a dentist? What are the most important considerations in the process? Generally speaking, you should avoid coffee or other drinks with caffeine before getting there, whether you are interested in some fillings or more complicated dental implants Solihull. Why? Simple. Caffeine is extremely powerful against numbing substances. Whether you are anesthetized with a spray or a shot, there is a fairly high risk for this procedure to be inefficient. As a direct consequence, the dental session will be extremely painful and even canceled if you cannot take the pain. You may still have to pay for the doctor’s time though.