A tooth that is cracked to the root does not have to be extracted. Normally, a tooth that is cracked to the root needs to be extracted, but if it is a molar tooth, root amputation or root splitting can be performed to preserve the tooth depending on the condition of the tooth. A tooth that is cracked to the root indicates that the pulp of the tooth has been irritated, and root canal treatment at this time may not be able to achieve good results. If the tooth is not extracted in time, it may lead to severe pain, and there will also be a misalignment of the bite and other situations. If the tooth is cracked to the root without timely treatment, it may lead to infection, the infection will penetrate directly from the crack to the alveolar bone, it is easier to inflammation, but also may produce pus, fistula and other undesirable situations. However, in the case of a grinding tooth, root amputation or root splitting can be performed to preserve the tooth depending on the condition of the tooth. If the tooth is cracked to the root, it is best to consult a doctor in time to remove the tooth, and also need to do a good job of post-care work to avoid infection.