Whether or not a dental implant is needed for the extraction of the last large tooth is largely determined by the patient’s own situation. If the last big tooth is a wisdom tooth, no implant is needed. If it is a second molar, an implant is recommended to avoid affecting the patient’s normal life. The last large tooth, generally refers to the second molar or wisdom tooth. 1. If the last large tooth is a second molar, an implant is required after extraction. Because the second molar bears an important chewing function among the big teeth, after extraction, if it is not implanted in time, it will affect the patient’s chewing ability. 2. If the last large tooth is a wisdom tooth, then after extraction, generally do not need to be implanted. If the extracted tooth is the second molar, it is recommended that the patient go to a regular dental hospital for dental implant surgery. Dental implants usually require a two-stage surgery and the treatment time will be longer. It is necessary to communicate with the doctor before the surgery.