Which type of periodontal fiber runs horizontally and assists in preventing tooth rotation?

Horizontal fibers are a specific type of periodontal ligament fiber that run horizontally between adjacent teeth. Their primary function is to help maintain the position of the teeth by resisting lateral forces, which contributes to preventing tooth rotation. This stability is essential for overall dental health, as it ensures that the teeth remain properly aligned within the dental arch.

Horizontal fibers play a crucial role in the periodontal support system by anchoring the teeth in their sockets and allowing for slight movement during normal function, such as chewing, while preventing excessive movement that could lead to misalignment or malocclusion. By providing this horizontal resistance, these fibers contribute significantly to the integrity of the entire dental structure.

The other types of fibers mentioned serve different purposes; for example, apical fibers help in resisting vertical forces, oblique fibers handle occlusal forces by dissipating pressure during biting, and transseptal fibers are primarily involved in inter-dental stability. Each type has its unique contribution to periodontal health, but when it comes to preventing tooth rotation specifically, horizontal fibers are key.