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What you are experiencing is a very common occurrence after having a filling placed. Likely the filling itself, or some leftover bonding material are creating an interference with your bite. What most people call this is simply a "high filling" . The reason this happens sometimes (not always) is because when the area is numb and the bite is checked, you likely aren't biting the same way you normally would when you can feel your teeth coming together. This means you are going to have to go back to your dentist to have the filling adjusted to match your bite. I would do this within a day or two because as you continue to chew with the tooth it will continue to sprain the periodontal ligament (small ligament that is the shock absorber for the root of the tooth) and soreness can increase and become quite painful. You won't have to have any anesthetic (numbing) to have a quick adjustment. Takes only a few minutes. Hopefully that answers your question.