In:
European Journal of Dentistry, Georg Thieme Verlag KG, Vol. 03, No. 04 ( 2009-10), p. 280-284
Abstract:
Objectives: To examine histological aspects of the ligaments between the middle ear and temporomandibular joint and suppose a theoretical role of their structural characteristics on mobility of mallear ossicle. Methods: The ligaments were obtained by microdissection of middle cranial fossa on both sites of 15 cadavers fixed in formalin solution and were sectioned longitudinally (7-10 µm thickness). The sections were stained with Verhoff’s Van Gieson’s stain (VVG) for demonstration of elastic fibers and visualized at X2.5 and X10 magnifications under light microscopy. Results: Anterior mallear ligament (AML) and sphenomandibular ligaments (SML) were consisted of collagen fibres in analyzed specimens. The discomallear ligament (DML) was constituted
of rich collagenous fibres. One specimen of DML harvested between petrotympanic fissure and retrodiscal-capsular intersection site contained elastic fibers dispersed in cotton-bowl appearance between collagen fibers. In the light of functional tests performed in previous studies, it could be extrapolated that presence of elastic fibers in the DML may prevent excessive forces conducted to mallear head by elongation of elastic fibers. Conclusions: Collagenous fibres have no ability to stretch along their axis which may lack compensatory mechanism to prevent mallear head mobility. (Eur J Dent 2009;3:280-284)
Type of Medium:
Online Resource
ISSN:
1305-7456
,
1305-7464
DOI:
10.1055/s-0039-1697445
Language:
English
Publisher:
Georg Thieme Verlag KG
Publication Date:
2009
detail.hit.zdb_id:
2491711-4
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