Dental fillings have been considered a common and safe restorative treatment that professionals perform. Yet, it’s essential that you’re aware of the possible risks, so you can make an informed decision before getting tooth fillings. Potential problems with the procedure may include the following: Tooth sensitivity. This is a fairly common occurrence following the placement of a filling. The discomfort may be caused by pressure, air or sweet foods and usually goes away on its own within weeks with no requirement for medication during this period. If you’re experiencing extreme tooth sensitivity or it does not subside after two to four weeks, be sure to see your dentist. Infection. Sometimes a cavity filling will pull away from the tooth it’s attached to, leaving a space behind. This small space in your enamel can be a breeding ground for bacteria that cause additional or recurrent decay and pain. If you notice any strange gaps or cracks around the area of your tooth, then visit the dentist immediately. Damage. Damage to a filling can occur when you bite down on something hard or if you are hit in the mouth while playing sports. These tiny cracks may become more significant when this happens, allowing food particles easy access.