How thick is the periodontal ligament?
How thick is the periodontal ligament?
Four different types of forces were applied on the tooth with two different periodontal ligament thickness (0.15 mm and 0.24 mm) and at the alveolar bone (at the apex and alveolar crest).
What is the width of PDL space?
The PDL ranges in width from 0.15 to 0.38mm with its thinnest part located in the middle third of the root. [5] The width progressively decreases with age. The PDL is a part of the periodontium that provides for the attachment of the teeth to the surrounding alveolar bone by way of the cementum.
What causes a widened PDL?
PDL widening occurs in trauma from occlusion, but in association with angular bone defects and mobility of teeth. However, in scleroderma, involved teeth are often not mobile and their gingival attachments are usually intact.
What is periodontal membrane?
periodontal membrane, also called Periodontal Ligament, fleshy tissue between tooth and tooth socket that holds the tooth in place, attaches it to the adjacent teeth, and enables it to resist the stresses of chewing.
What is periodontal ligament?
The Periodontal Ligament (PDL) can be defined as a fibrous joint that anchors the root of the tooth to the alveolar bone socket. Made of fibrous connective tissue, it holds the tooth in sprung suspension enabling the tooth to take on the mechanical pressure during function.
What is the structure of periodontal ligament?
Like all soft fibrous connective tissues, the periodontal ligament consists of a fibrous stroma in a gel of ground substance containing cells, blood vessels and nerves. The fibrous stroma consists primarily of collagen (with very small amounts of oxytalan) and the cells are mainly fibroblasts (Fig. 1).
What causes thickening of lamina dura?
14, 15 Destruction of periodontal fibers occurs in the injury stage of trauma from occlusion and a widening of periodontal ligament occurs in the final stage, which also leads to increased tooth mobility. Increasing the width of the periodontal space, often accompanied with a thickening of the lamina dura. …
What is widening of periodontal ligament space?
Malignant lesions are known to quickly grow downward into the periodontal ligament (PDL) space, resulting in an irregular widening and destruction of the lamina dura. Often, root fractures can result in a similar radiographic appearance of the surrounding periodontium.
Does the periodontal membrane weaken with age?
Results: The periodontal ligament (PDL) space shows a gradual decrease in width over the lifespan of the mice. Cell proliferation as well as the quantity and quality of collagen fibres decreased with age although cell density did not appear to be altered.
Should the periodontal ligament be removed?
Periodontal Ligament When you bite down and chew, the PDL protects the tooth from shattering by compressing a fraction of a millimeter like a spring. It is standard of care for a traditional oral surgeon to assume that the periodontal ligament adheres to the tooth and is therefore always removed during an extraction.
Can periodontal ligaments heal?
An important aspect of the periodontal ligament is the presence of cells that can repair, regenerate, or even destroy the tissues related to this important dental structure.