Which of the following classifications is a three-wall bony defect?

Question

Quizplus · Accepted Answer

Vertical bone loss often results in three-wall bony defects, where the defect is bounded by three bony walls. Horizontal bone loss, on the other hand, affects the bone in a more uniform manner across the dental arch, not creating a three-wall defect. Fenestration and dehiscence are types of bone loss where a window of bone is missing over the root (fenestration) or there is a loss of alveolar bone over the root, leaving a portion uncovered by bone (dehiscence), neither of which describes a three-wall defect.

Which of the Following Classifications Is a Three-Wall Bony Defect