INBDE (Integrated National Board Dental Examination) 2026 – 400 Free Practice Questions to Pass the Exam

Positive architectural bone in the interproximal area is defined as interproximal bone that is coronal to the radicular bone. This essentially means that the bone in between two teeth (interproximal area) is positioned above the root structure of the teeth. This configuration is essential for maintaining the strength and integrity of the alveolar bone, supporting the teeth and allowing for proper function.

The other options are incorrect:

- Option B: Interproximal bone apical to radicular bone would not be considered positive architectural bone, as the bone level should ideally be above the roots of the teeth.

- Option C: Interproximal bone level with radicular bone does not constitute positive architectural bone, as it should be coronal or above the radicular bone.

- Option D: No interproximal bone present is not a viable scenario in healthy dental architecture, as bone in the interproximal areas is essential for supporting tooth structure and maintaining bone density.