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]. [ http://en.wikipedia.org/wiki/Periodontal_fiber https://github.com/obophenotype/uberon/issues/1233 https://github.com/obophenotype/uberon/issues/21 http://purl.obolibrary.org/obo/BTO_0001020 ]

This is just here as a test because I lose it

Term information

Subsets

pheno_slim

contributor

https://github.com/cmungall

https://github.com/tmeehan

definition

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].

depicted by

The:Periodontium.jpg

external definition

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].

external ontology notes

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

has exact synonym

periodontal fibre

fibra periodontalis

periodontal fiber

has related synonym

paradentium

peridental membrane

peridontal ligament

peridontal fibre

peridontal ligament fiber

peridontal fiber

peridontal ligament fibre

periodontium

peridontal membrane

odontoperiosteum

alveolodental ligament

alveolodental membrane

alveolar periosteum

PDL

desmodontium

peridontium

id

UBERON:0008266

see also

http://purl.obolibrary.org/obo/FMA_76870