The remaining roots of extracted teeth are called broken roots in extraction operations, which are very common in clinical practice, but how to deal with them requires specific analysis of the problem. There are special root clamps that can be used to extract relatively large roots directly with root clamps, and there are also corresponding root jacks that can be used to extract relatively deeply buried roots. If the root is very difficult to remove, the root can be found and removed by flap and bone removal, but there are also other clinical cases, such as very small roots in the posterior teeth, if the overall length of the root is less than 3 mm, it can be considered not to be removed, because this root will not have any special symptoms and in most cases will not have any effect on the body.