What types of fibers are found in the periodontal ligament?

The periodontal ligament is a key structure in dentistry that plays a critical role in the support of teeth within their sockets. The correct answer highlights the various types of fibers found within this ligament, which include alveolar crest, horizontal, oblique, apical, transseptal, free gingival, and interradicular fibers.

Each of these fibers serves a specific function in maintaining dental stability:

• Alveolar crest fibers attach the periodontal ligament to the alveolar bone at the crest, helping to prevent vertical movement of the tooth.

• Horizontal fibers are oriented horizontally and help resist lateral forces.

• Oblique fibers are the most numerous and play a crucial role in handling occlusal forces by connecting the bone and cementum at an angle.

• Apical fibers support the tooth at its apex and help resist forces directed towards the root.

• Transseptal fibers cross the interproximal spaces, connecting adjacent teeth and maintaining their position relative to one another.

• Free gingival fibers are present in the gingival tissue and aid in the integrity of the gingiva.

• Interradicular fibers are found between the roots of multirooted teeth, helping to stabilize them.

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