I have been a dentist in the United States for 17 years. Because of the nature of my work unit, I have done a lot of root canal treatments (2 to 3 patients per day on average).
 Before becoming a dentist, I did a postdoctoral fellowship at the American College of Dentistry for 10 years, specializing in bone healing.
 Based on the above background, I made some breakthrough improvements in root canal treatment. This improvement was fully mature 10 years ago, and I used it to make about 5000 cases.
 1) Due to the simplified steps, the operation is simpler and faster.  10 to 15 cases can be done in 8 hours a day. If there is no serious root canal calcification, it only takes 15 minutes for the anterior teeth and 20 to 30 minutes for the posterior teeth.
 2) Since the motorized needle is used throughout the entire process, there is no need to manually expand the needle at all, the operation process is safer, the doctor is more relaxed, and the patient is more comfortable
 3) Due to the thorough and long-term killing of bacteria around the apical foramen and tighter sealing of the apical foramen, the postoperative pain and discomfort of the patients are greatly reduced. The recurrence rate of nearly 5000 cases is almost 0, because my patients are extremely large.  Most of them are low-income government insurance, and general specialists will not accept them. They will come back if they relapse, so I can follow them up.
 4) Because even in the case of tooth infection, the treatment can be completed at one time, so that the patient does not need to go back and forth many times, which is more convenient and more satisfying.