Generally speaking, as long as the root shape is normal, the root will not break during extraction. Some teeth with abnormal root development, such as interrupted teeth, multiple teeth, and misaligned teeth, have hooked or S-shaped roots, which are prone to root breakage during extraction. The surgeon will decide whether to remove the broken root according to the size and location of the root. Some of the broken roots are small, not infected, and close to the mandibular nerve or maxillary sinus, so they can be taken out reluctantly, which will hurt these important anatomical structures, but these broken roots can be kept in the bone and slowly ossified, which will not affect the patients themselves and will not be uncomfortable, so patients do not need to worry about anxiety.