Support: The periodontal ligament is a component of the periodontium that allows for the teeth to be attached to the surrounding alveolar bone via the cementum. PDL fibers also transmit and absorb forces between the teeth and alveolar bone..
How is the periodontal ligament formed?
Fibroblasts are responsible for forming and remodelling the PDL fibres. They break down collagen in a controlled manner, intracellularly through phagocytosis. Fibroblasts migrate in the PDL of continuously erupting teeth, during wound healing and in teeth with restricted eruption during usual function..
In which part of the tooth are the periodontal ligaments located?
The periodontal ligament is only found between the tooth root and adjacent bone and does not support the outer gum tissues. The complex nature of the PDL tissue allows the tooth to properly function during chewing and to withstand the pressure from grinding or clenching..
What are the 5 periodontal ligaments?
The primary principal fiber group is the alveolodental ligament, which consists of five different fiber subgroups. These fiber subgroups include the following: alveolar crest, horizontal, oblique, apical and interradicular on multirooted teeth..
What is the periodontal ligament of the tooth?
The periodontal ligament, commonly known as the PDL, is a soft connective tissue between the inner wall of the alveolar socket and the roots of the teeth. It consists of collagen bands (mostly type I collagen) connecting the cementum of teeth to the gingivae and alveolar bone..
What is the periodontal ligament space in the tooth?
The PDL is a highly specialized connective tissue situated between the tooth and the alveolar bone (Figure 1-5). The principal function of the PDL is to connect the tooth to the jaw, which it must do in such a way that the tooth will withstand the considerable forces of mastication..
What part of the dental anatomy is involved in periodontitis?
The periodontal ligament connects the cementum of each tooth to the surrounding alveolar bone in both the maxilla and mandible in humans. Among the most common dental diseases periodontitis, the most prevalent disease in people over 30, destroys the periodontium irreversibly and permanently [1]..
Which part of a tooth anchors it to the periodontal ligament?
Cementum. Hard connective tissue covering the tooth root, giving attachment to the periodontal ligament..
Cementum. Hard connective tissue covering the tooth root, giving attachment to the periodontal ligament.
Collagen fibers, reticulin fibers and oxytalan fibers form the PDL fibrous matrix. Collagen accounts for over 90% PDL fibers.
The PDL is a highly specialized connective tissue situated between the tooth and the alveolar bone (Figure 1-5). The principal function of the PDL is to connect the tooth to the jaw, which it must do in such a way that the tooth will withstand the considerable forces of mastication.
The periodontal ligament is a soft connective tissue embedded between the cementum and the inner wall of the alveolar bone socket to help support teeth. The periodontal ligament harbors a small population of stem cells that are responsible for maintaining and repairing periodontal ligament tissues and function.
How does advanced gum disease affect the periodontal ligament?
Advanced gum disease can lead to the destruction of bone and the loss of the periodontal ligament
In areas where the ligament has been lost, the adjacent bone is no longer attached to the tooth and cannot provide any support
The PDL is also prone to periodontal inflammation and cannot be easily regenerated
What is a periodontal ligament?
Abstract The periodontal ligament (PDL) connects the tooth root and alveolar bone
It is an aligned fibrous network that is interposed between, and anchored to, both mineralized surfaces
Periodontal disease is common and reduces the ability of the PDL to act as a shock absorber, a barrier for pathogens and a sensor of mastication
What is the width of a periodontal ligament in homeostasis?
The width of a periodontal ligament in homeostasis is ~0
15-0
38 mm, depending on the tooth type
The PDL has two primary functions: 1) to transmit and absorb mechanical stresses, and 2) to provide vascular supply and nutrients to the cementum, alveolar bone and the PDL itself [ 3 ]
The periodontal ligament is a unique specialised connective tissue between the cementum covering the tooth root and the alveolar bone. It is derived from the dental follicle region, which originates from the cranial neural crest cells. The ligament has an array of oriented fibres and is vascular.Periodontal ligaments are structures holding teeth in their sockets. They are seen as a thin radiolucent space between the surface of the tooth root and the lamina dura, the lining of the tooth socket. The lamina dura serves as a periodontal ligament attachment site.In reality, the periodontal ligament (PDL) serves as a soft tissue union between the tooth and bone. The PDL inserts into bone surrounding a tooth as well as the outer root surface layer (the cementum). Composed of various types of collagen and having a neurovascular component, the periodontal ligament is both very narrow and complex.The periodontal ligament does not support the outer gum tissues and is only found between the root part of the tooth and the adjacent bone. This complex tissue allows the tooth to function under the load of chewing and absorb excess pressure from clenching and grinding.
The periodontal ligaments are the dense soft connective tissue. Most of the periodontal ligament fibers are present between cementum and the bone lining the tooth socket. The periodontal ligaments (PDL) are derived from the dental follicular cells.
Tooth anatomy periodontal ligament
Group of specialized connective tissue fibers
The periodontal ligament, commonly abbreviated as the PDL, is a group of specialized connective tissue fibers that essentially attach a tooth to the alveolar bone within which it sits. It inserts into root cementum on one side and onto alveolar bone on the other.
