The fibrous connective tissue that surrounds the root of a tooth, separating it from and attaching it to the alveolar bone. It extends from the base of the gingival mucosa to the fundus of the bony socket, and its main function is to hold the tooth in its socket[BTO]. [ https://github.com/obophenotype/uberon/issues/1233 http://en.wikipedia.org/wiki/Periodontal_fiber https://github.com/obophenotype/uberon/issues/21 http://purl.obolibrary.org/obo/BTO_0001020 ]
Synonyms: periodontal fibre fibra periodontalis periodontal fiber
Term information
- BTO:0001020
- FMA:56665
- CALOHA:TS-0763
- MESH:D010513 (https://github.com/biopragmatics/biomappings)
- MA:0002467
- Wikipedia:Periodontal_fiber
- GAID:1259
- SCTID:245775004
- EMAPA:35679
pheno_slim
The fibrous connective tissue that surrounds the root of a tooth, separating it from and attaching it to the alveolar bone. It extends from the base of the gingival mucosa to the fundus of the bony socket, and its main function is to hold the tooth in its socket[BTO]. It consist of cells, extracellular compartment of fibers. The cells are fibroblast, epithelial, undifferentiated mesenchymal cells, bone and cementum cells. The extracellular compartment consists of collagen fibers bundles embedded in ground substance. The PDL substance has been estimated to be 70% water and is thought to have a significant effect on the tooth's ability to withstand stress loads[WP][BTO:0001020, Wikipedia:Periodontal_fiber, https://github.com/obophenotype/uberon/issues/21].
The collagen fibers, running from the cementum to the alveolar bone, that suspend a tooth in its socket; they include apical, oblique, horizontal, and alveolar crest fibers, indicating that the orientation of the fibers varies at different levels[http://www.drugs.com/dict/desmodentium.html].
FMA treats periodontium and periodontal ligament as the same; it has a separate class desmodentium, which we place here even though it is classified as fetal in FMA
paradentium
peridental membrane
peridontal ligament
peridontal fibre
peridontal ligament fiber
peridontal fiber
peridontal ligament fibre
periodontium
peridontal membrane
odontoperiosteum
alveolodental ligament
alveolar periosteum
alveolodental membrane
PDL
desmodontium
peridontium
Term relations
- ligament
- skeletal ligament
- neural crest-derived structure
- develops from some dental follicle
- develops from some neural crest
- part of some periodontium