The second molar loss can be repaired by partial removable denture or implant denture, it is recommended to choose the appropriate way of restoration after a clear diagnosis, there is no such thing as the best way. 1. Partial removable denture: it is a common clinical restoration for missing teeth, which is mainly suitable for missing free ends of teeth or missing most of the teeth; so the missing second molar can be chosen in this way, and its cost is relatively low, but it has the disadvantage of obvious feeling of foreign body or poor stability. 2. Implant denture: it is suitable for all kinds of missing teeth symptoms, so the second molar loss can choose implant denture repair, which has the characteristics of comfort and durability, but the cost is more expensive, and there are uncontrolled systemic diseases or periodontal disease, etc. should not be implanted restoration. It is recommended to actively seek medical advice and follow the doctor’s instructions.