What indicates for a periapical surgery:
A. Where performing an endodontic treatment on existing root canal filling may lead to fracture of the root
B. When root canal treatment is faulty
C. When there is danger of involving other structures
D. When the bony defect is so extensive that the edges of the incisors will collapse E. None of the above
A. Where performing an endodontic treatment on existing root canal filling may lead to fracture of the root
B. When root canal treatment is faulty
C. When there is danger of involving other structures
D. When the bony defect is so extensive that the edges of the incisors will collapse E. None of the above