title: [Permeability research of human temporomandibular joint disc and cartilage].
abstract: OBJECTIVE
  To measure the permeability of human temporomandibular joint (TMJ) disc and cartilage to provide basic parameter for oral biomechanics and tissue engineering, and analyze its mechanisms of pathology and load-release.
  
  
  METHODS
  Confined compression method was used to measure the permeability (k value) of four cadavers' TMJs, which were sampled into three parts: disc, condyle and glenoid fossa with different diameters (2 mm, 3 mm and 4 mm). All 128 samples were tested with correspond diameter indenter.
  
  
  RESULTS
  Larger the sample diameter was, higher the k value became. The highest k value appeared in the disc while the lowest appeared in glenoid fossa.
  
  
  CONCLUSIONS
  In normal condition, TMJ can suffer huge load by decreasing its permeability. Disc is weakest for the higher permeability, it's easy-damaged region is an initiated factor of TMJ disease.
authors.affiliation: Beijing Research Institute of Traumatology and Orthopedics, Beijing 100035, China.
authors.forename: Xiao-Chuan
authors.initials: XC
authors.lastname: Xu
authors.forename: Meng-Shi
authors.initials: MS
authors.lastname: Chen
authors.forename: Xin-Zhu
authors.initials: XZ
authors.lastname: Yi
mesh_terms: D002356:Cartilage; D006801:Humans; D010539:Permeability; D019224:Temporomandibular Joint Disc; D023822:Tissue Engineering