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Interradicular Fibers
Tooth (Mandibular First Molar)

Interradicular Fibers

Fibrae interradiculares

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Quick Facts

The interradicular fibers are fibers of the alveolodental ligament extending from the cementum of the tooth root to the interradicular septum.

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Structure and/or Key Feature(s)

There are five fiber types in the alveolodental ligament:

—alveolar crest fibers;

—apical fibers;

—horizontal fibers;

—interradicular fibers;

—oblique fibers (Rajendran and Selvam, 2015).

Anatomical Relations

Interradicular fibers are solely found in multi-rooted teeth, such as premolars and molars. These fiber bundles radiate from the interradicular septum to the furcation of the tooth (Rajendran and Selvam, 2015).


Interradicular fibers, along with the other fibers of the alveolodental ligament, are responsible for anchoring the root cement to the alveolar bone (Rajendran and Selvam, 2015).


Rajendran, M. and Selvam, U. A. (2015) 'Transseptal fibers - crosslinking convolutes: A review', Int J Contemp Dent Med Rev.

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