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Oblique Fibers
Tooth (Mandibular First Molar)

Oblique Fibers

Fibrae obliquae

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Quick Facts

The oblique fibers are the largest fibers of the periodontal ligament, extending from the cementum in a coronal direction obliquely to the apical two thirds of the alveolus; they suspend and anchor the tooth in its socket and resist surface tooth pressures (Dorland, 2011).

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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

Oblique fibers run from the cement in an oblique direction an insert into the alveolar bone in a coronal direction (Rajendran and Selvam, 2015).

Function

Oblique fibers contain the greatest amount of fiber bundles and are responsible for protecting the tooth against intrusive movement by masticatory force (Rajendran and Selvam, 2015).

References

Dorland, W. (2011) Dorland's Illustrated Medical Dictionary. 32nd edn. Philadelphia, USA: Elsevier Saunders.

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

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