title: [Densitometry of the bony structures of the human TMJ].
abstract: Four millimeter sagittal section of 65 formalin-fixed human TMJs were prepared. The X-rays of these specimen were evaluated numerically in a densitometer. The distribution of bone material and densities in condyle and fossa led to a classification of condylar and fossa types. In 48 specimen a combination of increased density of the condyle on the facial aspect with a thin bony lamella in the roof of the fossa, which either shows high density or very little material of low density, a so-called parchment fossa, was observed. The varying degrees of density as a function of mechanical stresses are discussed. The transfer of forces in the human TMJ during mastication exposes the superio-anterior or superio-facial segments of the condyle and the posterior slope of the articular tubercle to loading forces, while at the same time the roof of the fossa remains free of load.
authors.forename: B
authors.initials: B
authors.lastname: Klesper
authors.forename: H D
authors.initials: HD
authors.lastname: Pape
authors.forename: B
authors.initials: B
authors.lastname: Kummer
mesh_terms: D015519:Bone Density; D003720:Densitometry; D003799:Dental Stress Analysis; D006801:Humans; D008335:Mandibular Condyle / Q000033:anatomy & histology; D008409:Mastication; D013704:Temporomandibular Joint / Q000033:anatomy & histology*
vernacular_title: Densitometrische Untersuchungen der knöchernen Strukturen des menschlichen Kiefergelenkes.