Removal of the first filling material is generally recommended for the second filling. However, if the fixation of the first filling material is good and the extent of overlap between the two operations is not high, then it is possible not to remove it. 1. It is generally recommended to remove the material of the first filling when a second filling is placed in the same area. Completely removing the first material can help to directly observe the health condition within the tooth and help to promote dental health. At the same time, the filling material placed for the second time is generally able to bond more strongly with the tissues surrounding the tooth. 2. If the time between the second filling and the first filling is shorter, and the filling material used for the first time is better fixed, and there is no large area of loss or activity can not be removed, but need to do a good job of removing the carious tissue. Also, when the positions of the two fillings do not coincide, the removal of the original material is not necessary. When filling a tooth, you should listen to the doctor’s advice and choose the appropriate method and material for the operation.