Shimoyama Dental Clinic, located in Nishi-Ikebukuro, Toshima Ward, Tokyo, specializes in endodontics (root canal treatment). Root canal treatment preserves teeth without extraction when bacterial infection reaches the dental pulp due to severe tooth decay. As a specialized facility, the clinic accepts second opinion consultations. A dental microscope provides high-magnification visualization of root canal conditions invisible to the naked eye. Rubber dam isolation protects the treatment area from saliva and bacterial contamination, while dental CT enables three-dimensional examination for precise treatment of complex root canal shapes. All instruments undergo thorough sterilization, with disposable items replaced after each use. The clinic provides comprehensive care from vital pulp therapy to initial and retreatment procedures, including surgical endodontics for difficult cases. A treatment approach minimizing recurrence is the clinic's distinguishing feature. Hours are 10:00 AM to 6:30 PM (lunch break included), with credit cards, electronic payments, and barrier-free facilities available.