Back to Search
Start Over
The structure of the bilaminar zone in the human temporomandibular joint: a light and scanning electron microscopy study in young and elderly subjects.
- Source :
-
Journal of oral rehabilitation [J Oral Rehabil] 2001 Feb; Vol. 28 (2), pp. 113-9. - Publication Year :
- 2001
-
Abstract
- The bilaminar zone (BZ) in the human temporomandibular joint (TMJ) of toothed adults (GI) and toothless, elderly humans (GII) were analysed using light and scanning electron microscopy (SEM). In both groups the BZ consists of an upper and a lower stratum of connective tissue separated by a vascularized middle region. The superior stratum contains bundles of collagen fibres disposed in different directions. The fibres are fairly thick and transversely oriented immediately posterior to the TMJ disc. The initial part of the inferior stratum contains curved bundles of collagen fibres oriented anterio-posteriorly. From the middle to the posterior part of the inferior stratum, the fibres are right-aligned in GI and clearly sinuous in nature in GII. In both groups, the middle and posterior portions of the middle region are distinguished by the presence of vessels and vascular spaces. Loosely arranged connective and adipose tissues are also evident. The vascular spaces are wider in GII than in GI. The predominance of type I collagen fibres is clear in all regions of the BZ in both groups. The elastic fibres lie parallel to the collagen fibres in both groups and they are thicker and more abundant in GI, apparently decreasing in GII.
- Subjects :
- Adipose Tissue anatomy & histology
Adipose Tissue ultrastructure
Adult
Aged
Aged, 80 and over
Azo Compounds
Collagen classification
Collagen ultrastructure
Coloring Agents
Connective Tissue anatomy & histology
Connective Tissue blood supply
Connective Tissue ultrastructure
Dentition
Elastic Tissue anatomy & histology
Elastic Tissue ultrastructure
Female
Humans
Male
Microscopy, Electron, Scanning
Microscopy, Polarization
Middle Aged
Mouth, Edentulous pathology
Phenazines
Temporomandibular Joint blood supply
Temporomandibular Joint ultrastructure
Temporomandibular Joint Disc anatomy & histology
Temporomandibular Joint Disc ultrastructure
Aging pathology
Temporomandibular Joint anatomy & histology
Subjects
Details
- Language :
- English
- ISSN :
- 0305-182X
- Volume :
- 28
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Journal of oral rehabilitation
- Publication Type :
- Academic Journal
- Accession number :
- 11298258
- Full Text :
- https://doi.org/10.1046/j.1365-2842.2001.00683.x