Four wisdom teeth are usually not enough to extract just the bottom. The specifics will depend on your situation.
Four wisdom teeth refers to the presence of both upper and lower wisdom teeth, when the lower wisdom teeth are removed after the upper wisdom teeth need to be further removed, if the upper wisdom teeth are not removed for a long time, may be due to the lack of occlusion and gradually elongated, it is easier to bite the gum mucosa of the opposite jaw.
And single wisdom teeth and neighboring teeth will have a certain distance between, if not removed in time, will easily lead to food into the gap, will increase the phenomenon of neighboring teeth caries, in serious cases, will lead to pulpitis or apical periodontitis and other dental diseases.
Therefore, the four wisdom teeth can not only pull the bottom, need to be combined with the condition of the teeth, choose the right time to remove. After extraction, you need to pay attention to oral hygiene, so as to avoid inflammation and infection of the wound.