Sharpey's fibers

Periodontal ligaments; 1) gingival, 2) ridged, 3) horizontal, 4) interradicular, 5) oblique, 6) apical

Sharpey fibers are bundles of collagen fibers passing through the periodontal fissure.

Gingival - they attach to the loose gingiva. It forms the so-called circular ligament, which we disrupt before tooth extraction.
Transseptal - connect adjacent teeth in a row. When the alveolar process decreases, these fibers increase.
Crest - they come from the crest of the alveolus to the neck area of the cementu. It works against pull forces.
Horizontal - support previous threads.
Slanted' - capture the main part of the occlusal load on the tooth. It works against pressure forces.
Apical - lead from the apex of the tooth to the bottom of the tooth bed.

This arrangement is called a functional arrangement.

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