Whether or not the last tooth in the lower teeth can be extracted depends on whether or not it is a wisdom tooth. If the eighth tooth is counted from front to back, it means that it is a wisdom tooth, and it can be extracted in this case. Wisdom teeth are the four third molars, one above, one below, one to the right, and one to the left, that are the innermost teeth in the human mouth, on the alveolar bone. This is because these four third molars begin to erupt right around the age of 20. Since most people with these teeth do not erupt properly and are unable to function, extraction is generally recommended. However, if the last tooth is not a wisdom tooth and there is no disease, we generally do not recommend extraction because these teeth are the most important group of teeth for chewing. Therefore, whether the last tooth can be extracted or not depends on whether it is a wisdom tooth or not, if it is a wisdom tooth, it can be extracted, if it is not, then you need to go to a medical institution under the guidance of the appropriate doctor.