# Which periodontal fibers are consistent and are reconstructed even after the destruction of alveolar bone?
A. Apical
B. Oblique
C. Alveolar crest group
D. Transseptal
The correct answer is D. Transseptal.
Transseptal group: Extends interproximally over alveolar bone crest and are embedded in the cementum of adjacent teeth. They are reconstructed even after destruction of the alveolar bone has occurred in the periodontal disease and are responsible for returning teeth to their original state after orthodontic therapy.
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