The last big tooth to be extracted and left empty may not need to be repaired if it is a wisdom tooth, but it needs to be repaired as early as possible if it is a molar tooth other than a wisdom tooth. 1. Wisdom teeth. Wisdom teeth are located in the oral cavity at the end of the tooth row, often congenitally missing or blocked, sometimes the congenital absence of the maxillary wisdom teeth, the wisdom teeth will not affect the chewing function of the wisdom teeth extraction does not have to be repaired, and wisdom teeth are located in the last part of the oral cavity, if you want to repair, the operation is more difficult, generally do not need to be repaired. 2. Molar teeth other than wisdom teeth. If the last big tooth is not a wisdom tooth, due to the important chewing ability in the oral cavity, it needs to be restored as soon as possible after extraction to restore the chewing function, and at the same time, it can also avoid the elongation of the opposite jaw molar. Whether the last tooth needs to be restored after extraction, you need to go to the hospital to check the position of the missing tooth and judge whether it needs to be restored according to the oral condition.