The innermost tooth on the upper left side can be extracted, but it is not usually recommended to remove the tooth if it is not necessary.
The innermost tooth on the upper left side may be a wisdom tooth or a second molar. If wisdom teeth erupt with ectopic growth, obstruction, etc., they should be removed as soon as possible in a regular hospital to avoid causing diseases such as pulpitis, pericoronitis, and spreading to neighboring teeth.
In case of pulpitis and dental caries on the second molar, the treatment of retaining the tooth should be chosen first, and the tooth should be extracted only if the treatment is ineffective, and the implant restoration should be carried out as soon as possible after the extraction. If the second molar is not implanted in time after extraction, it may cause elongation of the opposite jaw teeth and loss of space for restoration, etc. The chewing function of the teeth will be reduced, and it may lead to temporomandibular joint pathology.
It is recommended to go to the regular hospital for treatment when the teeth are abnormal, and not to pull out the teeth by oneself, so as not to cause serious consequences.