Question

Which of the following statements is incorrect for furcation defect?

• A. Grade 3 defect is clinically visible
• B. Grade 1 can be visible radiographically as radiopaque
• C. In Grade 4 inter-radicular bone is completely lost
• D. In Grade 2 bone is attached to the dome of the furcation

Hint:

Grade 3 furcation defects are not visible clinically and require probing to detect the extent of bone loss.

Answer 1

The Correct Option is A

To determine which statement is incorrect regarding furcation defects, let's examine each option based on what we know about furcation defects.

1. Grade 3 defect is clinically visible:
   • Furcation defects are part of periodontal pathology where infection or bone loss occurs in the area where the roots of a tooth divide.
   • Grade 3 furcation defects, according to the Glickman classification, typically involve bone loss that is determined by probing, but it is not visible or clinically detectable visually in the mouth. The probe can pass through the furcation, but it is not completely visible as compared to Grade 4.
   Hence, the statement that "Grade 3 defect is clinically visible" is indeed incorrect.
2. Grade 1 can be visible radiographically as radiopaque:
   • Grade 1 furcation involves incipient bone loss that may not be substantial enough to be seen radiographically as a clear defect. It is generally a mild change and may appear slightly radiopaque on some radiographs, but often it is not distinctly visible.
3. In Grade 4 inter-radicular bone is completely lost:
   • Grade 4 furcation defect is characterized by a complete loss of bone between the roots, with a tunnel formation, making it visible clinically through the periodontium.
4. In Grade 2 bone is attached to the dome of the furcation:
   • In a Grade 2 furcation, partial loss of bone between the roots is present, where bone loss is significant but not yet involving complete loss, indicating that some bone still attaches near the dome of the furcation.

Based on this analysis, option 1 ("Grade 3 defect is clinically visible") is incorrect because Grade 3 defects are characterized by significant probing depth into the furcation without it being visible to the naked eye.