Patient: Description of the condition (onset time, main symptoms, hospital visit, etc.): I 5 years ago T teeth and left incisors to do ^ root treatment F in there cl black I want to do tooth X bleaching treatment ι lois w have] have shadow? Hold mrg for how long? 20q t hospital: zhe second Since the blocked teeth absorbed the root IB of the T teeth and left incisor, so _ knife (19) lord gallery コ tiger teeth). The same rT teeth and left incisor did root canal. 5 years on the cl black Want teeth X whitening well done. Zhejiang Provincial Stomatological Hospital Stomatological Comprehensive Department Fu Bo Ping: dead pulp teeth (pulpless teeth) discoloration is a worldwide problem, now there is no way to prevent. Discolored teeth can be bleached through the teeth, however, teeth bleaching can not determine to what extent the teeth can be bleached. Bleaching of dead pulp teeth may result in cervical resorption in some patients. Discolored teeth can also be treated with veneers or full crowns.