The function is as follows: 1. Treatment of dental diseases: root amputation, also known as root extraction, is a surgical operation to treat dental diseases. When one root of many teeth has incurable deep periodontal pocket, bone resorption and severe bifurcation, the affected root can be pulled out, and the remaining preserved root and crown can be retained to prolong the tooth life.

2. Treatment of other diseases: Root surgery can also treat various bone diseases, and has obvious therapeutic effects on immune system, lymphoma, lymphoid tuberculosis, nervous system diseases and Parkinson's disease. Root cutting operation is simple, minimally invasive, does not affect normal life, and can improve the therapeutic effect.