system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Endodontic therapy is contraindicated for a single-rooted tooth that has:
assistant
The correct answer is  The vertical fracture of teeth has poorer prognosis, in addition to this presence of periodontal problem contraindicates root canal therapy.